Product Data
Product
Data
WEATHERMAKER®
48/50A2,A3,A4,A5020-060
Single-Package Gas Heating/Electric Cooling
Rooftop Units and Electric Cooling
Rooftop Units with Optional Electric Heat
with COMFORTLINK™ Controls
and PURON® Refrigerant (R-410A)
20 to 60 Nominal Tons
a48-8349
48/50A020-035
Carrier’s 48/50A Series commercial
packaged rooftops offer:
• Puron (R-410A) environmentally
sound refrigerant
• Novation® heat exchanger
technology with microchannel coil
• An easy-to-use, plain language
display on the ComfortLink controls
• EERs (energy efficiency ratios)
meet ASHRAE (American Society
of Heating, Refrigeration, and Air
Conditioning Engineers) Standard
90.1-2007 (effective 1/1/2010)
• Meets ASHRAE Standard 62
• Constant or variable volume
• Communicating controls
• Accurately match building loads
with up to 5 steps of capacity
• VFD (variable frequency drive) on
all VAV (variable air volume) units
• Mechanical cooling operation at
outdoor ambient temperatures as
low as 32 F (–20 F with optional
Motormaster® V fan speed control)
Features/Benefits
a48-8350
48/50A040,050
Carrier’s 48/50A commercial
packaged unit offers design
flexibility, quality, reliability,
and ComfortLink controls.
Design flexibility
a48-8351
Dedicated vertical supply/return units
(A2,A3) are ideal for new construction
or retrofit to existing installations. The
low unit profile is maintained when the
unit is installed on the accessory roof
curb. The ducts are attached directly to
the roof curb to allow all ductwork to
be completed before the unit is
positioned.
48/50A060
Copyright 2011 Carrier Corporation
Form 48/50A-11PD
Features/Benefits (cont)
Dedicated horizontal units (A4,A5)
are ideal for replacement or applications such as through-the-wall where
sound must be attenuated before the
duct penetrates the roof. Ducts connect directly to the unit. Horizontal
units may be curb or slab mounted.
ComfortLink™ controls
Factory-installed ComfortLink controls provide the capability for free
standing operation or it may be linked
with a more extensive system. Factoryinstalled and programmed BACnet*
communication capability provides
simple integration with the building
HVAC system (e.g. terminal devices),
an i-Vu® Open Control System or a
BACnet building automation system.
The ComfortLink controls also have
the capability to communicate with the
Carrier Comfort Network® (CCN) system. This communication flexibility allows simple system integration as well
as data collection, trending, monitoring
and alarm displays.
The 48/50A Series may also be configured to communicate via MODBUS† or LonWorks** protocols if required by the application.
The ComfortLink controls are your
link to a world of simple and easy to
use rooftop units that offer outstanding
performance and value. When used
with a space temperature sensor, the
ComfortLink controls maintain control
over the economizer and condenser
fans and help optimize the performance of the multiple refrigeration circuits as conditions change, resulting in
the following features:
• higher part load efficiency
• better control of temperature and
humidity
• superior reliability
• redundant refrigeration systems
• high ambient cooling operation at
115 F
• Low ambient cooling operation at
32 F as standard (optional
Motormaster® V inverter fan speed
control for operation down to
–20 F)
*Sponsored by ASHRAE (American Society of
Heating, Refrigerating, and Air Conditioning
Engineers).
†Registered trademark of Schneider Electric.
**Registered trademark of Echelon
corporation.
2
The ComfortLink scrolling marquee
display is very easy to use. Messages
are displayed in easy to understand
English. No decoding is required. A
scrolling readout provides detailed
explanations of control information.
Only four, large, easy-to-use buttons
are required to maneuver through the
entire menu. The readout is designed
to be visible even in the brightest sunlight. A hand-held Navigator™ accessory can be used for added service
flexibility.
The ComfortLink controls provide
unparalleled service diagnostic information. Temperature and pressure can
be read from the display with no need
for separate gages. Other data, such as
compressor cycles, unit run time
hours, current alarms, can also be
accessed. A history of alarms is also
available for viewing.
Service run test can be very helpful
when troubleshooting. The user can
run test major components to help determine the root cause of a problem.
The unit can be run-tested before an
installation is complete to support a
satisfactory start-up.
To further support reliability, the
ComfortLink controls prevent reverse
compressor rotation.
No laptop computers are required
for start-up. Time schedules are built in
and the scrolling marquee display provides easy access to set points.
The ComfortLink controller accepts input from a CO2 sensor and a
smoke detector. Both are available as
factory-installed options or as fieldinstalled accessories.
Table of contents
The unit-mounted terminal strip allows control of the unit with a standard
thermostat. Expensive interface devices are not required.
Environmentally sound
Carrier’s unique Puron® refrigerant
(R-410A) enables you to make an environmentally responsible decision. Puron refrigerant is an HFC refrigerant
that does not contain chlorine that is
damaging to the ozone layer. Puron refrigerant is unaffected by the Montreal
Protocol. Puron refrigerant is a safe,
non-toxic, efficient and environmentally sound refrigerant for the future.
Quality and reliability
Excellent full and part load efficiencies
are achieved by using multiple scroll
compressors and indoor coils with intertwined dual refrigerant circuits. The
compressors are equipped with crankcase heaters and protected by electronic sensors and logic to control minimum on and off times and reverse rotation. The refrigerant circuits are both
electrically and mechanically independent, to provide standby capability
should one circuit require service.
Totally enclosed outdoor-fan motors
are designed for many years of troublefree operation.
Positive-locking bearings for the
indoor fan reduce vibration of the supply fan assembly and remain locked
during the life of the bearing.
Variable frequency drive (VFD)
and unit unloading
Variable air volume (VAV) units utilize
state of the art variable frequency
drive (VFD) to control duct static
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,6
Ratings and Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-17
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-32
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-37
Selection Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39-60
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-85
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85-96
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98-103
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104-113
pressure for optimum supply fan
energy savings.
The VAV units have up to 5 stages
of capacity control to match the load
requirements of the conditioned space.
Other VAV features include:
• control of cooling and heating (if
equipped with heat) in both occupied and unoccupied mode
• support of optional space temperature sensor
• control of modulating economizer to
provide free cooling when outdoor
conditions are suitable
• support of IAQ (indoor air quality)
sensor
• support linkage to ComfortID™
VAV systems
Constant volume units come
equipped with 2 stages of capacity.
Optional configuration is available to
increase this up to 5 stages of operation. Unit operation will closely match
the load and maintain comfort in the
most energy-efficient manner.
Factory-installed economizer
An optional integrated economizer
permits cooling utilizing an outdoor air
sensor. The direct gear driven, low
leakage blades eliminate conventional
inter-blade linkages and the associated
adjustments.
The economizer operates in conjunction with mechanical cooling when
required and is factory-installed for
either vertical or horizontal operation.
The factory-supplied and field-installed
rain hood/filter assembly is designed to
prevent moisture or objects from entering the unit.
Exhaust air relief is available for all
units:
• barometric relief (CV [constant
volume] or VAV)
• power exhaust
• high capacity power exhaust
Field-adjustable set points on modulating power exhaust prevent space
pressurization problems. Factoryinstalled relief options are unit mounted on downflow units. Accessories
must be duct mounted for horizontal
applications.
Novation heat exchanger
technology
The Novation heat exchanger design
with microchannel condenser coil is a
robust, cost effective alternative to
traditional coil design for standard
applications. Microchannel coils are
also sturdier than other coil types,
making them easier to clean without
causing damage to the coil.
Due to the compact all aluminum design, microchannel coils reduce overall
unit operating weight. The streamlined
microchannel coil also reduces refrigerant charge by up to 40%.
Microchannel coils are not recommended by Carrier for marine, coastal,
or industrial environments unless
Carrier-approved coating is applied.
Gas heating units
Integrated gas unit controller
(IGC) (gas heating units only) —
All ignition components are contained
in the compact IGC which is easily
accessible for servicing. The IGC control board, designed and manufactured
exclusively for Carrier rooftop units,
provides built-in diagnostic capability.
An LED (light-emitting diode) simplifies
troubleshooting by providing visual
fault notification and system status
confirmation.
The IGC also contains an anti-cycle
protection for gas heat operation.
After 4 continuous cycles on the unit
high-temperature limit switch, the gas
heat operation is disabled, and an error
code is issued. This feature greatly
improves reliability of the rooftop unit.
The IGC also contains burner
control logic for accurate and dependable gas ignition. This LED faultnotification system reduces service
person troubleshooting time and minimizes service costs. The IGC can also
increase heating efficiency by controlling evaporator fan on and off delays.
Efficient, dependable operation —
Tubular, dimpled gas heat exchangers
optimize heat transfer for improved
efficiency. The tubular design permits
hot gases to make multiple passes
across the path of the supply air. The
dimpled design creates a turbulent gas
flow to increase heating efficiency. The
extra thick Alumagard™ heat
exchanger coating provides corrosion
resistance to lengthen coil life. An
optional stainless steel heat exchanger
is also available.
The unsightly appearance of flue
stacks is eliminated and the effects of
wind on heating operations are diminished by the induced draft combustion
system. The inducer fan draws hot
combustion gas through the heat
exchanger at the optimum rate for the
most effective heat transfer. Induced
draft heating systems are safer than
positive pressure, forced draft heating
systems. With the induced draft
heating system, the heat exchanger
operates under negative pressure,
preventing flue gas leakage into the
indoor supply air.
During the Heating mode, the
evaporator-fan relay automatically
starts the evaporator fan after the heat
exchanger warms up to a suitable
temperature. To increase efficiency
and comfort, the 30-second fan delay
prevents cold air from entering the
supply duct system when the conditioned space is calling for heat.
The direct-spark ignition system
saves operating expense when compared to pilot ignition systems. No
crossover tube is required, therefore no
sooting or pilot fouling problems can
occur.
All 48A standard units are designed
for natural gas. An accessory LP (liquid
propane) conversion kit is available.
Safety is built in — All 48A units
have a flame rectification sensor to
quickly sense the burner flame and
ignite burners almost immediately.
The controls are designed to shut
down the unit during any flame outage
or circuit failure. The flame sensor reacts quickly to these events. In the
event of a shutdown, an error code is
issued at the IGC board.
The heating safety controls will shut
down the unit if they detect a problem.
If excessive temperatures develop, limit
switches shut off the gas valve. After
4 continuous short cycles of the
high-temperature limit switch, the IGC
board locks out the gas heat cycle to
prevent any further short cycles. This
safety feature is provided exclusively on
Carrier rooftop units. The rollout
switch also deenergizes the gas valve in
the event of a flame rollout.
Support of fire and smoke control is
included with an optional
ComfortLink™ controls expansion
module (CEM).
Staged gas unit heating
The staged gas control option adds the
capability to control the rooftop unit’s
gas heating system to a specified
3
Features/Benefits (cont)
supply air temperature set point for
purposes of tempering a cool mixedair condition, or for reheat when the
mechanical cooling is being used for
dehumidification. The gas heating
system employs multiple heating sections. Each section is equipped with a
two-stage gas valve. The gas valves are
sequenced by a factory-installed staged
gas controller (SGC) as required to
maintain the user-specified supply air
set point. Up to eleven stages of
heating control are available, based on
quantity and heating capacity sizes of
the individual heat exchanger sections
provided in the base unit. In addition to
providing system control for tempering
and reheat operation, the SGC also
provides Demand Heating control for
the first stage (W1 or low-heat) heating
mode. The heating capacity will always
go to 100% for second stage (W2 or
high-heat) operation.
Tempering of supply air is desirable
when rooftop units are operating in
ventilation mode (economizer only operation) at low outdoor temperatures.
At low outdoor temperatures, the
mixed-air temperature (combination of
return-from-space temperature and
outdoor/ventilation air temperature)
may become too low for the comfort
of the occupants or for the terminal
reheat systems. The tempering function adds incremental steps of heat
capacity to raise the temperature of
the mixed air up to levels suitable for
direct admission into the occupied
space or to levels consistent with
reheat capabilities of the space
terminals.
Installation/serviceability
Dedicated design (vertical or horizontal) requires no alteration time to
convert in the field. Single point
electrical connections are standard on
all units. Electrical service access can
be made through roof curb or side of
unit.
All units are equipped with the
ComfortLink control system as
standard. The ComfortLink control
system has a fully alpha-numeric
display and keypad. The display has
expandable text messages that
eliminate the need to look up coded
display information. Unit also supports
the use of the enhanced multiple line
display that can be connected through
a phone jack connection at either end
of the unit. The standard microprocessor controls replace the need for
field-installed anti-short cycle timers.
The controls are compatible with
either a room sensor or conventional
thermostat with no need to install an
accessory interface. In addition, no
special tools are required to run the
unit through its operational steps. The
unit can be run-tested before an
installation is complete to ensure
satisfactory start-up.
Hinged access panels are located for
easy access to standard serviceable
components for maintenance. No
fasteners need to be removed, which
reduces servicing time and helps prevent roof leaks caused by discarded
screws. Color coded wiring permits
easy tracing and diagnostics.
MODE
Run Status
Service Test
Temperature
Pressures
Setpoints
Alarm Status
Inputs
Outputs
Configuration
Time Clock
ENTER
ESCAPE
Operating Modes
a30-2187
Alarms
SCROLLING MARQUEE DISPLAY
Com
fortL
in
k
LOW-NOISE AEROACOUSTIC™ FAN (48/50A060 Only)
TUBES
FINS
MOD
E
Run
Alarm
Status
Status
Servic
e Tes
t
Tem
peratu
res
Pressu
res
Setpo
ints
Inputs
Outpu
ts
Config
uration
Time
Clock
Opera
ting
Modes
Alarm
s
ESC
ENTE
R
MANIFOLD
MICROCHANNELS
a30-3926
a30-3924
NAVIGATOR™ DISPLAY
4
NOVATION® HEAT EXCHANGER TECHNOLOGY
WITH MICROCHANNEL COILS
Model number nomenclature
48A2,A3,A4,A5 UNITS
48
A2
D
050
F
E
G
48 – Cooling Unit with Gas Heat
Configuration
A2 – CV Vertical with ComfortLink™ Controls
and Puron® Refrigerant (R-410A)
A3 – VAV Vertical with ComfortLink Controls
and Puron Refrigerant (R-410A)
A4 – CV Horizontal with ComfortLink Controls
and Puron Refrigerant (R-410A)
A5 – VAV Horizontal with ComfortLink Controls
and Puron Refrigerant (R-410A)
Heat Options
D – Low Gas Heat
E – High Gas Heat
M – Low Gas Heat Stainless
N – High Gas Heat Stainless
S – Staged Low Gas Heat Stainless
T – Staged High Gas Heat Stainless
Unit Size - Nominal Tons
020 – 20
025 – 25
027 – 27
030 – 30
035 – 35
040 – 40
050 – 50
060 – 60
Control Options
– – No Options
A – Controls Expansion Module only
B – CO2 Sensor
C – Smoke Detector
D – CO2 Sensor and Smoke Detector (return air section mounted)
E – Plugged Filter Indicator
F – Plugged Filter Indicator and CO 2 Sensor
G – Plugged Filter Indicator and Smoke Detector
H – Plugged Filter Indicator, CO2 and Smoke Detector
J – CO2 Sensor with Controls Expansion Module
K – Smoke Detector with Controls Expansion Module
L – CO2 Sensor & Smoke Detector with Controls Expansion Module
M – Plugged Filter Indicator with Controls Expansion Module
N – Plugged Filter Indicator and CO2 Sensor with Controls
Expansion Module
P – Plugged Filter Indicator and Smoke Detector with Controls
Expansion Module
Q – Plugged Filter Indicator, CO2 and Smoke Detector with
Controls Expansion Module
LEGEND
Al
— Aluminum
Cu
— Copper
CV
— Constant Volume
MCHX— Microchannel Heat Exchanger
VAV — Variable Air Volume
VFDB — Variable Frequency Drive Bypass
NOTES:
1. VAV models (A3,A5) are equipped with a supply fan motor variable
frequency drive (VFD).
2. Premium-efficiency motors are not available in 575-3-60.
3. All indoor-fan motors meet the minimum efficiency requirements as
established by Energy Policy Act (EPACT).
6
1
1
GN
Factory-Installed Options
Refer to price pages for
available option codes.
Packaging/Communication
1 – Domestic
3 – Export
A – Domestic with BACnet Communication Option
C – Export with BACnet Communication Option
Design Series
1 – A Series
Voltage
1 – 575-3-60
5 – 208/230-3-60
6 – 460-3-60
Coil Options
– – Al/Cu Cond, Al/Cu Evap without Hot Gas Bypass
C – Cu/Cu Cond, Al/Cu Evap without Hot Gas Bypass
E – Al/Cu Cond Precoat, Al/Cu Evap without Hot Gas Bypass
F – E-coated Al/Cu, Al/Cu Evap without Hot Gas Bypass
G – MCHX Cond, Al/Cu Evap without Hot Gas Bypass (Standard)
H – E-coated MCHX Cond, Al/Cu Evap
J – MCHX Cond with Security Grille, Al/Cu Evap
K – E-coated MCHX Cond with Security Grille, Al/Cu Evap
Q – Al/Cu Cond, Al/Cu Evap with Hot Gas Bypass
R – Cu/Cu Cond, Al/Cu Evap with Hot Gas Bypass
S – Al/Cu Cond Precoat, Al/Cu Evap with Hot Gas Bypass
T – E-coated Al/Cu, Al/Cu Evap with Hot Gas Bypass
V – MCHX Cond, Al/Cu Evap with Hot Gas Bypass
W – E-coated MCHX Cond, Al/Cu Evap with Hot Gas Bypass
X – MCHX Cond with Security Grille, Al/Cu Evap with Hot Gas Bypass
Y – E-coated MCHX Cond with Security Grille,
Al/Cu Evap with Hot Gas Bypass
Motor Options
High
High Efficiency
Efficiency
with VFDB
A – 5 HP J – 5 HP
C – 10 HP 1 – 10 HP
D – 15 HP 2 – 15 HP
E – 20 HP 3 – 20 HP
F – 25 HP 4 – 25 HP
G – 30 HP 5 – 30 HP
H – 40 HP 6 – 40 HP
Premium
Efficiency
L – 5 HP
N – 10 HP
P – 15 HP
Q – 20 HP
R – 25 HP
S – 30 HP
T – 40 HP
Premium Efficiency
with VFDB
V – 5 HP
X – 10 HP
Y – 15 HP
Z – 20 HP
7 – 25 HP
8 – 30 HP
9 – 40 HP
Quality Assurance
Certified to ISO 9001:2000
a48-8625
5
Model number nomenclature (cont)
50A2,A3,A4,A5 UNITS
50
A2
E
050
F
E
G
6
1
1
GN
50 – Cooling Unit
Factory-Installed Options
Refer to price pages for
available option codes.
Configuration
A2 – CV Vertical with ComfortLink™ Controls
and Puron® Refrigerant (R-410A)
A3 – VAV Vertical with ComfortLink Controls
and Puron Refrigerant (R-410A)
A4 – CV Horizontal with ComfortLink Controls
and Puron Refrigerant (R-410A)
A5 – VAV Horizontal with ComfortLink Controls
and Puron Refrigerant (R-410A)
Packaging/Communication
1 – Domestic
3 – Export
A – Domestic with BACnet Communication Option
C – Export with BACnet Communication Option
Heat Options
- – No heat
B – 36/27 kW
C – 72/54 kW
D – 54/42 kW
E – 108/81 kW
Unit Size - Nominal Tons
020 – 20
025 – 25
027 – 27
030 – 30
035 – 35
040 – 40
050 – 50
060 – 60
Control Options
– – No Options
A – Controls Expansion Module only
B – CO2 Sensor
C – Smoke Detector
D – CO2 Sensor and Smoke Detector (return section mounted)
E – Plugged Filter Indicator
F – Plugged Filter Indicator and CO 2 Sensor
G – Plugged Filter Indicator and Smoke Detector
H – Plugged Filter Indicator, CO2 and Smoke Detector
J – CO2 Sensor with Controls Expansion Module
K – Smoke Detector with Controls Expansion Module
L – CO2 Sensor and Smoke Detector with Controls Expansion Module
M – Plugged Filter Indicator with Controls Expansion Module
N – Plugged Filter Indicator and CO 2 Sensor with Controls
Expansion Module
P – Plugged Filter Indicator and Smoke Detector with Controls
Expansion Module
Q – Plugged Filter Indicator, CO2 and Smoke Detector with
Controls Expansion Module
Al
—
Cu
—
CV
—
MCHX—
VAV —
VFDB —
LEGEND
Aluminum
Copper
Constant Volume
Microchannel Heat Exchanger
Variable Air Volume
Variable Frequency Drive Bypass
Design Series
1 – A Series
Voltage
1 – 575-3-60
2 – 380-3-60
5 – 208/230-3-60
6 – 460-3-60
Coil Options
– – Al/Cu Cond, Al/Cu Evap without Hot Gas Bypass
C – Cu/Cu Cond, Al/Cu Evap without Hot Gas Bypass
E – Al/Cu Cond Precoat, Al/Cu Evap without Hot Gas Bypass
F – E-coated Al/Cu, Al/Cu Evap without Hot Gas Bypass
G – MCHX Cond, Al/Cu Evap without Hot Gas Bypass (Standard)
H – E-coated MCHX Cond, Al/Cu Evap
J – MCHX Cond with Security Grille, Al/Cu Evap
K – E-coated MCHX Cond with Security Grille, Al/Cu Evap
Q – Al/Cu Cond, Al/Cu Evap with Hot Gas Bypass
R – Cu/Cu Cond, Al/Cu Evap with Hot Gas Bypass
S – Al/Cu Cond Precoat, Al/Cu Evap with Hot Gas Bypass
T – E-coated Al/Cu, Al/Cu Evap with Hot Gas Bypass
V – MCHX Cond, Al/Cu Evap with Hot Gas Bypass
W – E-coated MCHX Cond, Al/Cu Evap with Hot Gas Bypass
X – MCHX Cond with Security Grille, Al/Cu Evap with Hot Gas Bypass
Y – E-coated MCHX Cond with Security Grille,
Al/Cu Evap with Hot Gas Bypass
Motor Options
High
High Efficiency
Efficiency
with VFDB
A – 5 HP J – 5 HP
C – 10 HP 1 – 10 HP
D – 15 HP 2 – 15 HP
E – 20 HP 3 – 20 HP
F – 25 HP 4 – 25 HP
G – 30 HP 5 – 30 HP
H – 40 HP 6 – 40 HP
Quality Assurance
6
Premium Efficiency
with VFDB
V – 5 HP
X – 10 HP
Y – 15 HP
Z – 20 HP
7 – 25 HP
8 – 30 HP
9 – 40 HP
NOTES:
1. VAV models (A3,A5) are equipped with a supply fan motor variable frequency drive (VFD).
2. Premium-efficiency motors are not available in 575-3-60.
3. All indoor-fan motors meet the minimum efficiency requirements as
established by EPACT.
a50-8561
Certified to ISO 9001:2000
Premium
Efficiency
L – 5 HP
N – 10 HP
P – 15 HP
Q – 20 HP
R – 25 HP
S – 30 HP
T – 40 HP
Ratings and capacities
ELECTRIC RESISTANCE HEATER DATA
UNIT
50A2,A3,A4,A5
208
27
54
27
54
41
81
020-035 LO HEAT
020-035 HIGH HEAT
040,050 LO HEAT
040,050 HIGH HEAT
060 LO HEAT
060 HIGH HEAT
HEATER kW
Unit Voltages
230
460
36
36
72
72
36
36
72
72
54
54
108
108
575
36
72
36
72
54
108
HEATER
STAGES
% HEAT
PER STAGE
1
2
1
2
1
2
100
50/100
100
50/100
100
50/100
DESIGN RANGE
Min CFM
6,000
6,000
10,500
10,500
15,000
15,000
Max CFM
15,000
15,000
20,000
20,000
27,000
27,000
NOTE: Due to the open design of the electric heaters, the airside pressure drop is negligible.
COOLING CFM OPERATING RANGE
UNIT
48/50A2,A4020
48/50A3,A5020
48/50A2,A4025
48/50A3,A5025
48/50A2,A4027
48/50A3,A5027
48/50A2,A4030
48/50A3,A5030
48/50A2,A4035
48/50A3,A5035
48/50A2,A4040
48/50A3,A5040
48/50A2,A4050
48/50A3,A5050
48/50A2,A4060
48/50A3,A5060
MIN CFM
6,000
4,000†
7,000
5,000†
8,100
5,400†
9,000
6,000†
10,500
7,000†
12,000
8,000†
13,500
10,000†
18,000
12,000†
*Operation at these levels may be limited by entering evaporator air wet bulb temperatures. See Cooling Capacities tables on pages 39-46 for further details.
MAX CFM*
10,000
10,000
12,500
12,500
13,500
13,500
15,000
15,000
17,500
17,500
20,000
20,000
20,000
20,000
27,000
27,000
†Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by edb
and ewb conditions.
GAS HEATING CAPACITIES AND EFFICIENCIES
STANDARD UNITS
UNITS
48A2,A3,A4,A5
020-030 LO HEAT
020-030 HIGH HEAT
035 LO HEAT
035 HIGH HEAT
040,050 LO HEAT
040,050 HIGH HEAT
060 LO HEAT
060 HIGH HEAT
INPUT (Btuh)
Stage 1
Stage 2
262,500
394,000
262,500
600,000
300,000
600,000
582,000
873,000
350,000
525,000
350,000
800,000
400,000
800,000
776,000
1,164,000
MAXIMUM
OUTPUT
(Btuh)
283,500
425,250
283,500
648,500
324,000
648,000
636,320
954,480
DESIGN RANGE
TEMPERATURE
RISE (F)
STEADY-STATE
EFFICIENCY (%)
Min Cfm
Max Cfm*
15 to 45
35 to 65
15 to 45
30 to 60
10 to 40
30 to 60
10 to 40
30 to 60
81
81
81
81
81
81
82
82
5,900
6,100
5,900
10,100
7,600
10,100
11,000
14,700
15,000
11,400
15,000
20,200
22,500
20,200
27,000
27,000
UNITS WITH STAGED GAS OPTION
UNITS
48A2,A3,A4,A5
020-030 LO HEAT
020-030 HIGH HEAT
035 LO HEAT
035 HIGH HEAT
040,050 LO HEAT
040,050 HIGH HEAT
060 LO HEAT
060 HIGH HEAT
STAGES OF GAS CONTROL
(% of Full Heat Output)
38, 50, 75, 88, 100
25, 33, 50, 67, 75, 83, 100
38, 50, 75, 88, 100
38, 50, 75, 88, 100
38, 50, 75, 88, 100
38, 50, 75, 88, 100
19, 25, 38, 44, 50, 56, 63, 75, 88, 94, 100
25, 33, 50, 58, 67, 75, 83, 92, 100
*In some cases, maximum cfm may be limited by maximum cooling airflow value.
NOTES:
1. Ratings are approved for altitudes to 2000 feet. At altitudes over 2000 ft,
ratings are 4% less for each 1000 ft greater than 2000 ft above sea level.
2. At altitudes up to 2000 ft, the following formula may be used to calculate air
temperature rise:
t =
Output capacity
1.10 x air quantity
MIN. OUTPUT
(Btuh)
107,730
106,313
107,730
246,240
123,120
246,240
120,901
238,620
MAX. OUTPUT
(Btuh)
283,500
425,250
283,500
648,000
324,000
648,000
636,320
954,480
DESIGN RANGE
Min Cfm
Max Cfm*
5,900
15,000
6,100
11,400
5,900
15,000
10,100
20,200
7,600
22,500
10,100
20,200
11,000
27,000
14,700
27,000
3. At altitudes above 2000 ft, the following formula may be used:
Output capacity
(.24 x specific weight of air x 60) (air quantity)
4. On standard gas heat with aluminized heat exchangers, the minimum allowable mixed air entering the heat exchanger during half-rate (first stage) operation is 50 F. There is no minimum limitation for full-rate operation.
5. Total unit design is listed by ETL Testing Laboratories Inc.
t =
7
Ratings and capacities (cont)
CAPACITY CONTROL STAGING OPTIONS
APPLICATION
VAV
UNIT
DEMAND
SOURCE
48/50A3,A5
RAT
SPT
CV Sensor
SPT
48/50A2,A4
CV, Mech Thermostat
CV
EDT
RAT
SPT
VAV
—
—
—
—
—
Y1,Y2
COOLING
CONTROL METHOD
Multiple Stage EDT
Multiple Stage EDT
2 Stage Demand
Multiple Adaptive Demand
2 Stage Demand
Multiple Adaptive Demand
COMPRESSOR SEQUENCE
SIZE 020-027 UNITS SIZE 030-060 UNITS
Table C
Table D
Table E
Table F
Table C
Table D
Table E
Table F
Table A
NA
Table B
NA
Table C
Table D
Table E
Table F
Table A
NA
Table B
NA
Table C
Table D
Table E
Table F
LEGEND
Constant Volume
Evaporator Discharge Temperature
Return Air Temperature
Space Temperature
Variable Air Volume
CAPACITY CONTROL STAGING OPTIONS TABLE A
CAPACITY CONTROL STAGING OPTIONS TABLE B
48/50A020-027 UNITS — CV 2-STAGE SEQUENCE
48/50A030-060 UNITS — CV 2-STAGE SEQUENCE
STAGE
Y1
Y2
COMP
A1
A2
B1
UNIT
020
025
027
SEQUENCE 1
SEQUENCE 2
1
2
0
1
2
Thermostat Inputs
Thermostat Inputs
OPEN CLOSED CLOSED OPEN CLOSED CLOSED
OPEN
OPEN
CLOSED OPEN
OPEN
CLOSED
Compressor Status
Compressor Status
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
ON*
OFF
OFF
ON
Capacity 48/50A
Capacity 48/50A
0%
30%
100%
0%
30%
100%
0%
33%
100%
0%
33%
100%
0%
33%
100%
0%
33%
100%
0
STAGE
Y1
Y2
COMP
A1
A2
B1
B2
UNIT
030
035
040
050
060
SEQUENCE 1
SEQUENCE 2
1
2
0
1
2
Thermostat Inputs
Thermostat Inputs
OPEN CLOSED CLOSED OPEN CLOSED CLOSED
OPEN
OPEN
CLOSED OPEN
OPEN
CLOSED
Compressor Status
Compressor Status
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON*
OFF
ON
ON
Capacity 48/50A
Capacity 48/50A
0%
50%
100%
0%
50%
100%
0%
50%
100%
0%
50%
100%
0%
50%
100%
0%
50%
100%
0%
50%
100%
0%
50%
100%
0%
50%
100%
0%
50%
100%
0
CAPACITY CONTROL STAGING OPTIONS TABLE C
48/50A020-027 UNITS VAV AND ADAPTIVE CV STAGING SEQUENCE WITHOUT HOT GAS BYPASS
STAGE
COMP
A1
A2
B1
UNIT
020
025
027
8
0
OFF
OFF
OFF
0%
0%
0%
SEQUENCE 1
1
2
Compressor Status
ON
OFF
OFF
ON
OFF
ON
Capacity 48/50A
30%
70%
33%
67%
33%
67%
3
0
ON
ON
ON
OFF
OFF
OFF
100%
100%
100%
0%
0%
0%
SEQUENCE 2
1
2
Compressor Status
OFF
ON
ON
OFF
OFF
ON
Capacity 48/50A
30%
70%
33%
67%
33%
67%
3
ON
ON
ON
100%
100%
100%
CAPACITY CONTROL STAGING OPTIONS TABLE D
48/50A020-027 UNIT VAV AND ADAPTIVE CV STAGING SEQUENCE WITH HOT GAS BYPASS
STAGE
COMP
A1
A2
B1
UNIT
020
025
027
0
1
OFF
OFF
OFF
ON*
OFF
OFF
0%
0%
0%
10%
17%
17%
SEQUENCE 1
2
3
Compressor Status
ON
OFF
OFF
ON
OFF
ON
Capacity 48/50A
30%
70%
33%
67%
33%
67%
4
0
1
ON
ON
ON
OFF
OFF
OFF
OFF
ON*
OFF
100%
100%
100%
0%
0%
0%
10%
17%
17%
SEQUENCE 2
2
3
Compressor Status
OFF
ON
ON
OFF
OFF
ON
Capacity 48/50A
30%
70%
33%
67%
33%
67%
4
ON
ON
ON
100%
100%
100%
*Hot gas bypass activated.
CAPACITY CONTROL STAGING OPTIONS TABLE E
48/50A030-060 UNITS VAV AND ADAPTIVE CV STAGING SEQUENCE WITHOUT HOT GAS BYPASS
STAGE
COMP
A1
A2
B1
B2
UNIT
030
035
040
050
060
0
1
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
0%
0%
0%
0%
0%
25%
20%
25%
25%
25%
SEQUENCE 1
2
3
Compressor Status
OFF
OFF
ON
ON
ON
ON
OFF
ON
Capacity 48/50A
50%
75%
50%
80%
50%
75%
50%
75%
50%
75%
4
0
1
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
100%
100%
100%
100%
100%
0%
0%
0%
0%
0%
25%
20%
25%
25%
25%
SEQUENCE 2
2
3
Compressor Status
ON
ON
OFF
ON
ON
ON
OFF
OFF
Capacity 48/50A
50%
75%
50%
70%
50%
75%
50%
75%
50%
75%
4
ON
ON
ON
ON
100%
100%
100%
100%
100%
CAPACITY CONTROL STAGING OPTIONS TABLE F
48/50A030-060 UNITS VAV AND ADAPTIVE CV STAGING SEQUENCE WITH HOT GAS BYPASS STAGING SEQUENCE
STAGE
COMP
A1
A2
B1
B2
UNIT
030
035
040
050
060
0
1
OFF
OFF
OFF
OFF
ON*
OFF
OFF
OFF
0%
0%
0%
0%
0%
10%
7%
14%
16%
18%
SEQUENCE 1
2
3
Compressor Status
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
Capacity 48/50A
25%
50%
20%
50%
25%
50%
25%
50%
25%
50%
4
5
0
1
OFF
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON*
OFF
OFF
75%
80%
75%
75%
75%
100%
100%
100%
100%
100%
0%
0%
0%
0%
0%
10%
7%
14%
16%
18%
SEQUENCE 2
2
3
Compressor Status
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
Capacity 48/50A
25%
50%
20%
50%
25%
50%
25%
50%
25%
50%
4
5
ON
ON
ON
OFF
ON
ON
ON
ON
75%
70%
75%
75%
75%
100%
100%
100%
100%
100%
*Hot gas bypass activated.
ALTITUDE COMPENSATION — 48A2,A3,A4,A5 UNITS
ELEVATION
(ft)
0-2,000
2,001- 3,000
3,001- 4,000
4,001- 5,000
5,001- 6,000
6,001- 7,000
7,001- 8,000
8,001- 9,000
9,001-10,000
10,001-11,000
11,001-12,000
12,001-13,000
13,001-14,000
SIZES 020-035
Natural
Liquid
Gas
Propane
Orifice
Orifice
Drill Bit
Drill Bit
Size*
Size*
34
43
7/ 
44
64
36
45
37
45
38
45
39
47
40
47
41
48
3/ 
48
32
42
49
43
49
43
50
44
50
SIZES 040-060
Natural
Liquid
Gas
Propane
Orifice
Orifice
Drill Bit
Drill Bit
Size*
Size*
31
41
3/ 
32
32
33
43
33
43
34
44
36
44
36
45
37
45
38
45
39
47
5/64
40
41
48
3/ 
49
32
*Orifices available through your local Carrier distributor.
9
Physical data — 48A2,A3,A4,A5 units
UNIT 48A2,A3,A4,A5
NOMINAL CAPACITY (tons)
BASE UNIT
OPERATING WEIGHT (lb)
COMPRESSOR
Quantity ... Type (Ckt 1/Ckt 2)
Number of Refrigerant Circuits
Oil
REFRIGERANT TYPE
Operating Charge (lb-oz)
Circuit 1
Circuit 2
MCHX CONDENSER*
Quantity
Total Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Quantity... Diameter (in.)
Motor Hp
EVAPORATOR COIL
Tube Size (in.)
Rows ... Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity ... Size (in.)
Type Drive
Nominal Cfm
Motor Hp
Motor Frame Size
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Nominal Fan Shaft Diameter (in.)
Belt Quantity
Belt Type
Belt Length (in.)
Pulley Center Line Distance (in.)
Factory Speed Setting (rpm)
FURNACE SECTION
Supply Line Pressure Range
Rollout Switch Cutout
Temp (F)†
Burner Orifice Diameter (in. ...drill
size)
Natural Gas
Std
Liquid Propane
Alt
Thermostat Heat Anticipator
Setting
Stage 1 (amps)
Stage 2 (amps)
Gas Input (Btuh) Stage 1
(Low Heat/High Heat)
Stage 2
(Low Heat/High Heat)
Efficiency (Steady State) (%)
Temperature Rise Range
Manifold Pressure (in. wg)
Natural Gas
Std
Liquid Propane
Alt
Gas Valve Quantity
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto.)
MIXED-AIR FILTERS
Quantity ... Size (in.) Standard
Pleated
020D/E
20
025D/E
25
027D/E
27
030D/E
30
2 ... ZP90/1…ZP90
2
Precharged
2…ZP72, 2…ZP72
2
Precharged
See Unit Weights Table
2 ... ZP67/1…ZP90
2
Precharged
2 ... ZP90/1…ZP90
2
Precharged
R-410A
14-14
11-13
20-6
12-13
20-6
12-13
15-2
15-5
1
32.9
1
32.9
1
32.9
1
32.9
Propeller Type
19,500
19,500
19,500
2 ... 30
2 ... 30
2 ... 30
1
1
1
Cross-Hatched Copper Tubes, Aluminum Plate Fins with Intertwined Circuits
3/
3/
3/
3/
8
8
8
8
3 ... 15
4 ... 14
4 ... 15
4 ... 15
31.7
31.7
31.7
31.7
Centrifugal Type
2 ... 20 X 15
2 ... 20 X 15
2 ... 20 X 15
2 ... 20 X 15
Belt
Belt
Belt
Belt
8,000
10,000
11,000
12,000
10
15
5
10
15
10
15
20
10
15
20
215T
254T
184T
215T
254T
215T
254T
256T
215T
254T
256T
Ball
Ball
Ball
Ball
1200
1200
1200
1200
4.4
5.7
5.2
6.1
5.5
4.4
4.9
5.9
4.4
5.7
5.9
13/8
15/8
11/8
13/8
15/8
13/8
15/8
15/8
13/8
15/8
15/8
8.6
9.1
12.4
11.1
8.7
9.4
8.1
8.7
9.0
9.1
8.7
115/16
115/16
115/16
115/16
2
2
1
1
2
2
2
2
2
2
2
BX50
5VX530
BX56
5VX570
5VX530
BX50
5VX500 5VX530
BX50
5VX530 5VX530
63
53
56
57
53
50
50
53
50
53
53
15.615.015.015.615.015.015.6-18.4 15.6-18.4
15.0-17.9 15.6-18.4 15.018.4
17.9
17.9
17.9
18.4
17.9
17.9
924
1096
773
962
1106
848
1059
1187
856
1096
1187
19,500
2 ... 30
1
5
184T
4.8
11/8
12.4
1
BX56
56
16.018.7
717
5.0-in. wg min/13.5-in. wg max.
225
225
225
225
.111 ... 34
.089 ... 43
.111 ... 34
.089 ... 43
.111 ... 34
.089 ... 43
.111 ... 34
.089 ... 43
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
262,500/394,000
262,500/394,000
262,500/394,000
262,500/394,000
350,000/525,000
350,000/525,000
350,000/525,000
350,000/525,000
81
15-45/35-65
81
15-45/35-65
81
15-45/35-65
81
15-45/35-65
3.5
3.5
2
3.5
3.5
2
3.5
3.5
2
3.5
3.5
2
650
500
650
500
650
500
650
500
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
OUTDOOR-AIR FILTERS
Quantity...Size (in.)
POWER EXHAUST
Motor, Quantity...Hp
Fan, Diameter...Width (in.)
8...16 x 25 x 2
4...20 x 25 x 2
Direct Drive, Single-Phase Motors (Factory-Wired for High Speed Operation), Forward-Curved Fan Wheels
with Backdraft Dampers on Each Fan Housing
4...1
11 x 10
LEGEND
Al
— Aluminum
Cu
— Copper
MCHX— Microchannel Heat Exchanger
*Sizes 020 to 027: Circuit 1 uses the lower portion of condenser coil, Circuit 2
uses the upper portion.
Sizes 030 and 035: Circuit 1 uses the upper portion of condenser coil, Circuit 2
uses the lower portion.
Sizes 040 and 050: Circuit 1 uses the left condenser coil, Circuit 2 the right.
10
Size 060: Circuit A uses the two MCHX coils near the bulkhead, Circuit B uses
the two MCHX coils near the control box.
†Rollout switch is manual reset.
UNIT 48A2,A3,A4,A5
NOMINAL CAPACITY (tons)
BASE UNIT
OPERATING WEIGHT (lb)
COMPRESSOR
Quantity ... Type (Ckt 1/Ckt 2)
Number of Refrigerant Circuits
Oil
REFRIGERANT TYPE
Operating Charge (lb-oz)
Circuit 1
Circuit 2
MCHX CONDENSER*
Quantity
Total Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Quantity... Diameter (in.)
Motor Hp
EVAPORATOR COIL
Tube Size (in.)
Rows ... Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity ... Size (in.)
Type Drive
Nominal Cfm
Motor Hp
Motor Frame Size
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Nominal Fan Shaft Diameter (in.)
Belt Quantity
Belt Type
Belt Length (in.)
035D/E
35
2 ... ZP67/2…ZP103
2
Precharged
18-0
26-11
2…ZP120/2…ZP120
2
Precharged
2…ZP154/2…ZP154
2
Precharged
29-11
29-11
30-10
38-5
25-8
26-0
1
32.9
2
2
4
65.8
65.8
105.2
Shrouded Axial Type
Propeller Type
19,500
32,000
35,000
40,000
2 ... 30
4 ... 30
4 ... 30
4...30.5
1
1
1
1
Cross-Hatched Copper Tubes, Aluminum Plate Fins with Intertwined Circuits
1/
1/
1/
1/
2
2
2
2
6 ... 16
4 ... 17
6 ... 16
4...17
31.3
31.3
31.3
48.1
Centrifugal Type
2 ... 20 X 15
2 ... 20 X 15
2 ... 20 X 15
3 ... 20 X 15
Belt
Belt
Belt
Belt
14,000
16,000
18,000
24,000
15
20
25
15
20
25
20
25
30
25
30
40
254T
256T
284T
254T
256T
284T
256T
284T
286T
284T
286T
324T
Ball
Ball
Ball
Ball
1300
1300
1300
1200
5.1
5.7
6.2
5.3
5.7
7.5
5.7
6.2
6.7
5.3
5.9
6.5
15/8
17/8
15/8
15/8
17/8
15/8
17/8
17/8
17/8
17/8
21/8
15/8
8.7
8.7
8.7
9.5
9.5
11.1
9.5
9.5
9.5
9.1
9.5
9.5
115/16
115/16
115/16
115/16
2
2
2
2
2
2
2
2
2
3
3
3
5VX500 5VX530 5VX550 5VX530 5VX550 5VX590 5VX550 5VX570 5VX570 5VX530 5VX550 5VX570
50
53
55
53
55
59
55
57
57
53
55
57
15.015.015.015.015.014.615.014.614.615.214.714.217.9
17.9
17.9
17.9
17.9
17.6
17.9
17.6
17.6
17.5
17.2
17.0
1025
1147
1247
976
1050
1182
1050
1142
1234
1019
1087
1197
Factory Speed Setting (rpm)
FURNACE SECTION
Supply Line Pressure Range
Rollout Switch Cutout
Temp (F)†
Burner Orifice Diameter (in ...drill size)
Liquid Propane
Thermostat Heat Anticipator Setting
Stage 1 (amps)
Stage 2 (amps)
Gas Input (Btuh) Stage 1
(Low Heat/High Heat)
Stage 2
(Low Heat/High Heat)
Efficiency (Steady State) (%)
Temperature Rise Range
Manifold Pressure (in. wg)
Natural Gas
Liquid Propane
Gas Valve Quantity
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto.)
MIXED-AIR FILTERS
Quantity ... Size (in.) Standard
Pleated
2…ZP103/2…ZP103
2
Precharged
060D/E
60
R-410A
Pulley Center Line Distance (in.)
Natural Gas
040D/E
050D/E
40
50
See Unit Weights Table
5.0-in. wg min/13.5-in. wg max.
225
Std
Alt
Std
Alt
.111 ... 34 (low)/.120 ... 31
(high)
.089 ... 43
225
225
225
.120 ... 31
.120 ... 31
.120...31
.096 ... 41
.096 ... 41
.096...41
0.1
0.1
0.24
0.13
0.1
0.1
0.1
0.1
262,500/600,000
300,000/600,000
300,000/600,000
582,000/873,000
350,000/800,000
400,000/800,000
400,000/800,000
776,000/1,164,000
81
15-45/30-60
81
10-40/30-60
81
10-40/30-60
82
10-40/30-60
3.5
3.5
2
3.5
3.5
2
3.5
3.5
2
3.3
3.3
3
650
500
650
500
650
500
650
500
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
16...20 x 24 x 2
8...20 x 20 x 4
8...20 x 24 x 4
OUTDOOR-AIR FILTERS
Quantity...Size (in.)
POWER EXHAUST
Motor, Quantity...Hp
Fan, Diameter...Width (in.)
8...16 x 25 x 2
8...16 x 25 x 2
8...16 x 25 x 2
12...16 x 25 x 2
4...20 x 25 x 2
4...20 x 25 x 2
4...20 x 25 x 2
6...20 x 25 x 2
Direct Drive, Single-Phase Motors (Factory-Wired for High Speed Operation), Forward-Curved Fan Wheels
with Backdraft Dampers on Each Fan Housing
6...1
4...1
4...1
4...1
11 x 10
11 x 10
11 x 10
11 x 10
LEGEND
Al
— Aluminum
Cu
— Copper
MCHX— Microchannel Heat Exchanger
†Rollout switch is manual reset.
*Sizes 020 to 027: Circuit 1 uses the lower portion of condenser coil, Circuit 2
uses the upper portion.
Sizes 030 and 035: Circuit 1 uses the upper portion of condenser coil, Circuit 2
uses the lower portion.
Sizes 040 and 050: Circuit 1 uses the left condenser coil, Circuit 2 the right.
Size 060: Circuit A uses the two MCHX coils near the bulkhead, Circuit B uses
the two MCHX coils near the control box.
11
Physical data — 50A2,A3,A4,A5 units
UNIT 50A2,A3,A4,A5
NOMINAL CAPACITY (tons)
BASE UNIT
OPERATING WEIGHT (lb)
COMPRESSOR
Quantity ... Type (Ckt 1/Ckt 2)
Number of Refrigerant Circuits
Oil
REFRIGERANT TYPE
Operating Charge (lb-oz)
Circuit 1
Circuit 2
MCHX CONDENSER*
Quantity
Total Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Quantity... Diameter (in.)
Motor Hp
EVAPORATOR COIL
Tube Size (in.)
Rows ... Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity ... Size (in.)
Type Drive
Nominal Cfm
Motor Hp
Motor Frame Size
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Nominal Fan Shaft Diameter (in.)
Belt Quantity
Belt Type
Belt Length (in.)
Pulley Center Line Distance (in.)
Factory Speed Setting (rpm)
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto.)
MIXED-AIR FILTERS
Quantity ... Size (in.) Standard
Pleated
020
20
025
25
027
27
030
30
2 ... ZP90/1…ZP90
2
Precharged
2…ZP72, 2…ZP72
2
Precharged
See Unit Weights Table
2 ... ZP67/1…ZP90
2
Precharged
2 ... ZP90/1…ZP90
2
Precharged
R-410A
14-14
11-13
20-6
12-13
20-6
12-13
15-2
15-5
1
32.9
1
32.9
1
32.9
1
32.9
Propeller Type
19,500
19,500
19,500
2 ... 30
2 ... 30
2 ... 30
1
1
1
Cross-Hatched Copper Tubes, Aluminum Plate Fins with Intertwined Circuits
3/
3/
3/
3/
8
8
8
8
3 ... 15
4 ... 14
4 ... 15
4 ... 15
31.7
31.7
31.7
31.7
Centrifugal Type
2 ... 20 X 15
2 ... 20 X 15
2 ... 20 X 15
2 ... 20 X 15
Belt
Belt
Belt
Belt
8,000
10,000
11,000
12,000
10
15
5
10
15
10
15
20
10
15
20
215T
254T
184T
215T
254T
215T
254T
256T
215T
254T
256T
Ball
Ball
Ball
Ball
1200
1200
1200
1200
4.4
5.7
5.2
6.1
5.5
4.4
4.9
5.9
4.4
5.7
5.9
13/8
15/8
11/8
13/8
15/8
13/8
15/8
15/8
13/8
15/8
15/8
8.6
9.1
12.4
11.1
8.7
9.4
8.1
8.7
9.0
9.1
8.7
115/16
115/16
115/16
115/16
2
2
1
1
2
2
2
2
2
2
2
BX50
5VX530
BX56
5VX570
5VX530
BX50
5VX500 5VX530
BX50
5VX530 5VX530
63
53
56
57
53
50
50
53
50
53
53
15.615.015.015.615.015.015.6-18.4 15.6-18.4
15.0-17.9 15.6-18.4 15.018.4
17.9
17.9
17.9
18.4
17.9
17.9
924
1096
773
962
1106
848
1059
1187
856
1096
1187
19,500
2 ... 30
1
5
184T
4.8
11/8
12.4
1
BX56
56
16.018.7
717
650
500
650
500
650
500
650
500
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
OUTDOOR-AIR FILTERS
Quantity...Size (in.)
POWER EXHAUST
Motor, Quantity...Hp
Fan, Diameter...Width (in.)
8...16 x 25 x 2
4...20 x 25 x 2
Direct Drive, Single-Phase Motors (Factory-Wired for High Speed Operation), Forward-Curved Fan Wheels with Backdraft Dampers
on Each Fan Housing
4...1
11 x 10
LEGEND
Al
— Aluminum
Cu
— Copper
MCHX— Microchannel Heat Exchanger
*Sizes 020 to 027: Circuit 1 uses the lower portion of condenser coil, Circuit 2
uses the upper portion.
Sizes 030 and 035: Circuit 1 uses the upper portion of condenser coil, Circuit 2
uses the lower portion.
Sizes 040 and 050: Circuit 1 uses the left condenser coil, Circuit 2 the right.
Size 060: Circuit A uses the two MCHX coils near the bulkhead, Circuit B uses
the two MCHX coils near the control box.
†Rollout switch is manual reset.
12
UNIT 50A2,A3,A4,A5
NOMINAL CAPACITY (tons)
BASE UNIT
OPERATING WEIGHT (lb)
COMPRESSOR
Quantity ... Type (Ckt 1/Ckt 2)
Number of Refrigerant Circuits
Oil
REFRIGERANT TYPE
Operating Charge (lb-oz)
Circuit 1
Circuit 2
MCHX CONDENSER*
Quantity
Total Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Quantity... Diameter (in.)
Motor Hp
EVAPORATOR COIL
Tube Size (in.)
Rows ... Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity ... Size (in.)
Type Drive
Nominal Cfm
Motor Hp
Motor Frame Size
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Nominal Fan Shaft Diameter (in.)
Belt Quantity
Belt Type
Belt Length (in.)
Pulley Center Line Distance (in.)
Factory Speed Setting (rpm)
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto.)
MIXED-AIR FILTERS
Quantity ... Size (in.) Standard
Pleated
035
35
040
40
050
50
060
60
2…ZP120/2…ZP120
2
Precharged
2…ZP154/2…ZP154
2
Precharged
29-11
29-11
30-10
38-5
See Unit Weights Table
2 ... ZP67/2…ZP103
2
Precharged
2…ZP103/2…ZP103
2
Precharged
R-410A
18-0
26-11
25-8
26-0
1
32.9
2
2
4
65.8
65.8
105.2
Shrouded Axial Type
Propeller Type
19,500
32,000
35,000
40,000
2 ... 30
4 ... 30
4 ... 30
4...30.5
1
1
1
1
Cross-Hatched Copper Tubes, Aluminum Plate Fins with Intertwined Circuits
1/
1/
1/
1/
2
2
2
2
6 ... 16
4 ... 17
6 ... 16
4...17
31.3
31.3
31.3
48.1
Centrifugal Type
2 ... 20 X 15
2 ... 20 X 15
2 ... 20 X 15
3 ... 20 X 15
Belt
Belt
Belt
Belt
14,000
16,000
18,000
24,000
15
20
25
15
20
25
20
25
30
25
30
40
254T
256T
284T
254T
256T
284T
256T
284T
286T
284T
286T
324T
Ball
Ball
Ball
Ball
1300
1300
1300
1200
5.1
5.7
6.2
5.3
5.7
7.5
5.7
6.2
6.7
5.3
5.9
6.5
15/8
17/8
15/8
15/8
17/8
15/8
17/8
17/8
17/8
17/8
21/8
15/8
8.7
8.7
8.7
9.5
9.5
11.1
9.5
9.5
9.5
9.1
9.5
9.5
115/16
115/16
115/16
115/16
2
2
2
2
2
2
2
2
2
3
3
3
5VX500 5VX530 5VX550 5VX530 5VX550 5VX590 5VX550 5VX570 5VX570 5VX530 5VX550 5VX570
50
53
55
53
55
59
55
57
57
53
55
57
15.015.015.015.015.014.615.014.614.615.214.714.217.9
17.9
17.9
17.9
17.9
17.6
17.9
17.6
17.6
17.5
17.2
17.0
1025
1147
1247
976
1050
1182
1050
1142
1234
1019
1087
1197
650
500
650
500
650
500
650
500
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
10 ... 20 x 24 x 2
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
16...20 x 24 x 2
8...20 x 20 x 4
8...20 x 24 x 4
OUTDOOR-AIR FILTERS
Quantity...Size (in.)
POWER EXHAUST
Motor, Quantity...Hp
Fan, Diameter...Width (in.)
8...16 x 25 x 2
8...16 x 25 x 2
8...16 x 25 x 2
12...16 x 25 x 2
4...20 x 25 x 2
4...20 x 25 x 2
4...20 x 25 x 2
6...20 x 25 x 2
Direct Drive, Single-Phase Motors (Factory-Wired for High Speed Operation), Forward-Curved Fan Wheels
with Backdraft Dampers on Each Fan Housing
4...1
4...1
4...1
6...1
11 x 10
11 x 10
11 x 10
11 x 10
LEGEND
Al
— Aluminum
Cu
— Copper
MCHX— Microchannel Heat Exchanger
*Sizes 020 to 027: Circuit 1 uses the lower portion of condenser coil, Circuit 2
uses the upper portion.
Sizes 030 and 035: Circuit 1 uses the upper portion of condenser coil, Circuit 2
uses the lower portion.
Sizes 040 and 050: Circuit 1 uses the left condenser coil, Circuit 2 the right.
Size 060: Circuit A uses the two MCHX coils near the bulkhead, Circuit B uses
the two MCHX coils near the control box.
†Rollout switch is manual reset.
13
Physical data (cont)
48/50A020-060 UNIT WEIGHTS
BASE UNIT WEIGHTS* (lb)
UNIT
020
3825
3905
3865
3945
3625
3703
48A2D,A3D
48A2E,A3E
48A4D,A5D
48A4E,A5E
50A2,A3
50A4,A5
Barometric Relief
Non-Modulating Power Exhaust
Modulating Power Exhaust
Electric Heat
Cu Tube/Aluminum Fin Condenser Coil
Cu Tube/Cu Fin Condenser Coil
300
450
500
110
100
263
45
OA Hood Crate/Packaging
(Less Hoods’ Weight)
Outdoor Air Hoods/Filters (included with unit)
Hail Guards
Roof Curb (14-in.)
170
73
365
025
027
030
035
040
050
3961
3961
3992
4340
4770
4914
4041
4041
4072
4500
4930
5074
4001
4001
4032
4380
4810
4954
4081
4081
4112
4540
4970
5114
3761
3761
3792
4025
4455
4599
3839
3839
3870
4218
4648
4792
OPTIONS/ACCESSORIES (WEIGHT ADDERS) (lb)
300
300
300
300
300
300
450
450
450
450
450
450
500
500
500
500
500
500
110
110
110
110
110
110
100
100
150
150
187
317
263
263
370
370
512
751
45
45
45
45
45
45
(Packaging Only)
170
170
170
170
170
170
73
73
73
73
146
146
365
365
365
365
410
410
CV MOTOR WEIGHTS (lb)
MOTOR HP
5 HP
10 HP
15 HP
20 HP
25 HP
30 HP
40 HP
Cu
CV
FIOP
HP
IFM
OA
VAV
VFD
—
—
—
—
—
—
—
—
UNIT VOLTAGE
230/460
575
230/460
575
230/460
575
230/460
575
230/460
575
230/460
575
230/460
575
HIGH
EFFICIENCY
IFM
78
78
118
118
150
150
212
212
240
240
283
283
372
372
450
675
725
165
26
677
45
255
219
540
VAV MOTOR WEIGHTS (lb)
PREMIUM
EFFICIENCY
IFM
94
92
164
156
217
220
250
258
309
319
355
359
415
410
MOTOR HP
UNIT VOLTAGE
5 HP
10 HP
15 HP
20 HP
25 HP
30 HP
40 HP
LEGEND
Copper
Constant Volume
Factory-Installed Option
Horsepower
Indoor-Fan Motor
Outdoor Air
Variable Air Volume
Variable Frequency Drive
*Outdoor-air hoods and filters included in base unit weights; indoor-fan motors are NOT included.
NOTES:
1. Base Unit Weight includes OA hoods (economizer or outdoor air damper); does not include an
indoor-fan motor. ADD indoor motor, FIOPs and Accessories for TOTAL operating weight.
2. VAV Motor Weights include the indoor motor and the VFD, optional VFD bypass, VFD transducer and associated wiring.
14
060
7066
7306
7106
7356
6826
7041
230/460
575
230/460
575
230/460
575
230/460
575
230/460
575
230/460
575
230/460
575
HIGH
EFFICIENCY
IFM
136
147
187
187
249
249
347
311
375
375
418
418
507
507
PREMIUM
EFFICIENCY
IFM
152
161
233
225
316
319
385
357
444
454
490
494
550
545
CENTER OF GRAVITY AND CORNER WEIGHTS
48/50A2,A4 CONSTANT VOLUME UNITS
UNIT
WEIGHT (lb)
50A2020
48A2D020
48A2E020
50A4020
48A4D020
48A4E020
50A2025
48A2D025
48A2E025
50A4025
48A4D025
48A4E025
50A2027
48A2D027
48A2E027
50A4027
48A4D027
48A4E027
50A2030
48A2D030
48A2E030
50A4030
48A4D030
48A4E030
50A2035
48A2D035
48A2E035
50A4035
48A4D035
48A4E035
50A2040
48A2D040
48A2E040
50A4040
48A4D040
48A4E040
50A2050
48A2D050
48A2E050
50A4050
48A4D050
48A4E050
50A2060
48A2D060
48A2E060
50A4060
48A4D060
48A4E060
4500
4590
4670
4078
4130
4210
4636
4726
4806
4214
4266
4346
4674
4764
4844
4252
4304
4384
4705
4795
4875
4283
4335
4415
4999
5204
5364
4692
4744
4904
5429
5634
5794
5122
5174
5334
5613
5818
5978
5306
5358
5518
8176
8251
8491
7666
7566
7816
CENTER OF GRAVITY (in.)
A
B
97.4
44.7
96.3
44.2
95.7
43.9
97.5
44.7
96.3
44.3
95.8
44.0
98.0
44.5
96.9
44.0
96.3
43.7
98.1
44.5
97.0
44.1
96.4
43.8
97.2
44.1
96.1
43.7
95.6
43.4
97.2
44.1
96.1
43.7
95.6
43.4
95.1
44.4
94.0
44.0
93.5
43.7
94.9
44.4
93.8
44.0
93.3
43.7
95.9
41.5
94.8
41.0
94.2
40.7
95.8
41.5
94.7
41.0
94.1
40.7
121.7
41.4
120.3
41.0
118.8
40.7
121.6
41.4
120.0
41.0
118.6
40.7
119.3
41.7
117.9
41.3
116.5
41.0
119.0
41.7
117.4
41.3
115.9
40.9
184.9
43.4
177.5
41.3
170.4
39.2
184.7
43.4
177.3
41.3
170.1
39.2
CORNER WEIGHT (lb)
2
3
937
1348
962
1346
979
1352
850
1223
866
1213
883
1221
963
1379
988
1377
1005
1383
876
1255
892
1244
909
1252
963
1379
988
1377
1005
1383
876
1255
892
1244
909
1252
1006
1369
1032
1366
1049
1372
918
1244
935
1232
952
1239
988
1367
1034
1393
1067
1417
928
1282
944
1269
976
1294
1110
1444
1159
1466
1202
1477
1049
1361
1067
1343
1108
1357
1188
1472
1237
1491
1281
1501
1127
1387
1146
1366
1189
1378
1637
2393
1666
2206
1718
2067
1537
2242
1531
2019
1585
1898
1
906
950
981
820
853
883
920
964
995
834
867
897
958
1002
1033
872
905
935
987
1032
1063
901
935
966
1107
1181
1235
1040
1078
1131
1245
1324
1392
1177
1219
1284
1310
1390
1459
1243
1287
1354
1683
1879
2126
1580
1727
1961
NOTES:
1. Center of gravity
.
2. The weight distribution and center of gravity information are representative of a standard unit and include the impact of factoryinstalled options such as electric heat (50A only), economizer, and
modulating power exhaust.
4
1310
1333
1358
1186
1198
1224
1374
1397
1423
1250
1263
1288
1374
1397
1423
1250
1263
1288
1343
1366
1392
1220
1232
1258
1537
1596
1645
1442
1454
1503
1629
1686
1723
1536
1546
1584
1644
1700
1738
1550
1559
1598
2463
2500
2580
2307
2290
2373
3
2
B
1
A
4
a48-8334
15
Physical data (cont)
CENTER OF GRAVITY AND CORNER WEIGHTS (cont)
48/50A3,A5 VARIABLE AIR VOLUME UNITS
UNIT
WEIGHT (lb)
50A3020
48A3D020
48A3E020
50A5020
48A5D020
48A5E020
50A3025
48A3D025
48A3E025
50A5025
48A5D025
48A5E025
50A3027
48A3D027
48A3E027
50A5027
48A5D027
48A5E027
50A3030
48A3D030
48A3E030
50A5030
48A5D030
48A5E030
50A3035
48A3D035
48A3E035
50A5035
48A5D035
48A5E035
50A3040
48A3D040
48A3E040
50A5040
48A5D040
48A5E040
50A3050
48A3D050
48A3E050
50A5050
48A5D050
48A5E050
50A3060
48A3D060
48A3E060
50A5060
48A5D060
48A5E060
4599
4689
4769
4177
4229
4309
4735
4825
4905
4313
4365
4445
4801
4891
4971
4379
4431
4511
4832
4922
5002
4410
4462
4542
5134
5339
5499
4827
4879
5039
5564
5769
5929
5257
5309
5469
5744
5949
6109
5437
5489
5649
8311
8386
8626
7801
7701
7951
CENTER OF GRAVITY (in.)
A
B
98.0
44.9
96.8
44.5
96.3
44.2
98.1
45.0
96.9
44.6
96.4
44.2
98.5
44.7
97.4
44.3
96.9
44.0
98.7
44.8
97.5
44.3
97.0
44.0
97.2
44.1
96.1
43.7
95.6
43.4
97.2
44.1
96.1
43.7
95.6
43.4
95.2
44.4
94.1
44.0
93.6
43.7
95.0
44.4
93.9
44.0
93.4
43.7
95.9
41.5
94.8
41.0
94.2
40.7
95.8
41.5
94.7
41.0
94.1
40.7
121.8
41.4
120.3
41.0
118.8
40.7
121.6
41.4
120.1
41.0
118.6
40.7
119.5
41.7
118.1
41.3
116.6
41.0
119.1
41.7
117.5
41.3
116.1
40.9
184.9
43.4
177.6
41.3
170.4
39.2
184.8
43.4
177.3
41.3
170.1
39.2
CORNER WEIGHT (lb)
2
3
963
1385
989
1382
1006
1388
876
1261
893
1249
910
1257
989
1416
1015
1414
1032
1419
902
1292
919
1281
936
1288
989
1416
1015
1414
1032
1419
902
1292
919
1281
936
1288
1032
1407
1058
1403
1075
1408
944
1282
962
1269
979
1276
1014
1405
1061
1430
1093
1453
954
1320
970
1305
1003
1330
1137
1481
1186
1502
1229
1513
1076
1398
1094
1379
1136
1393
1214
1509
1264
1527
1308
1536
1153
1423
1172
1402
1215
1413
1663
2433
1693
2243
1745
2100
1564
2282
1558
2056
1611
1932
1
905
949
980
818
852
882
918
963
994
832
866
896
984
1029
1060
898
932
962
1013
1058
1090
927
962
993
1137
1211
1266
1070
1108
1161
1276
1355
1423
1207
1250
1316
1338
1419
1489
1271
1316
1384
1710
1909
2159
1608
1757
1994
NOTES:
1. Center of gravity
.
2. The weight distribution and center of gravity information are representative of a standard unit and include the impact of factoryinstalled options such as electric heat (50A only), economizer, and
modulating power exhaust.
3
2
B
1
a48-8334
16
4
1347
1370
1396
1223
1235
1261
1411
1434
1460
1287
1300
1325
1411
1434
1460
1287
1300
1325
1380
1403
1428
1257
1269
1295
1579
1637
1687
1484
1495
1545
1671
1727
1764
1577
1587
1625
1684
1740
1777
1590
1599
1638
2504
2541
2622
2349
2331
2414
A
4
FIOP AND ACCESSORY CORNER WEIGHT ADJUSTMENTS
UNIT
WEIGHT (lb)
48/50A 020-027
Barometric Relief
Non Mod. Power Exhaust
Mod. Power Exhaust
Electric Heat
Al/Cu Cond coil
Cu/Cu Cond Coil
Hail Guards
48/50A 030,035
Barometric Relief
Non Mod. Power Exhaust
Mod. Power Exhaust
Electric Heat
Al/Cu Cond coil
Cu/Cu Cond Coil
Hail Guards
48/50A 040
Barometric Relief
Non Mod. Power Exhaust
Mod. Power Exhaust
Electric Heat
Al/Cu Cond Coil
Cu/Cu Cond Coil
Hail Guards
48/50A 050
Barometric Relief
Non Mod. Power Exhaust
Mod. Power Exhaust
Electric Heat
Al/Cu Cond Coil
Cu/Cu Cond Coil
Hail Guards
48/50A 060
Barometric Relief
Non Mod. Power Exhaust
Mod. Power Exhaust
Electric Heat
Al/Cu Cond Coil
Cu/Cu Cond Coil
Hail Guards
1
CORNER WEIGHTS (lb)
2
3
4
300
450
500
110
100
263
73
2
3
4
59
1
2
0
185
278
309
10
1
2
0
111
167
186
6
49
129
36
1
2
2
35
49
129
36
300
450
500
110
150
370
73
2
3
4
59
1
3
0
185
278
309
10
1
3
0
111
167
186
6
74
182
36
1
2
2
35
74
182
36
300
450
500
110
187
512
146
2
4
4
67
2
5
0
211
317
352
12
2
5
0
86
128
143
5
92
252
73
1
1
2
27
92
252
73
300
450
500
110
317
751
146
2
4
4
67
34
80
0
211
317
352
12
34
80
0
86
128
143
5
124
295
73
1
1
2
27
124
295
73
450
675
725
165
26
677
219
4
6
6
101
0
72
0
319
479
514
17
0
72
0
126
189
203
7
13
266
109
1
2
2
40
13
266
109
3
2
B
1
a48-8334
A
4
17
Options and accessories
ITEM
GAS HEAT OPTIONS (48A Only)
Low Gas Heat - Aluminized
High Gas Heat - Aluminized
Low Gas Heat - Stainless Steel
High Gas Heat - Stainless Steel
Staged Gas Heat - Low - Stainless Steel
Staged Gas Heat - High - Stainless Steel
LP Conversion Kit
ELECTRIC HEAT (50A Only)
Low Electric Heat
High Electric Heat
INDOOR AIR QUALITY
2-inch Filters
4-inch Filters
Return Air CO2 Sensor
CO2 Space Sensor
CO2 Aspirator Box
ECONOMIZER
Manual Outside Air Self-Closing Damper
Modulating Economizer
Outdoor or Return Humidity Sensor (Enthalpy)
EXHAUST AIR CONTROL
Barometric Relief
Non-Modulating Power Exhaust
Staged Power Exhaust
Building Pressure Control Board (ECB2)
Building Pressure Control Sensor
CONDENSER AND EVAPORATOR COIL OPTIONS
Al/Cu Condenser and Evaporator
Al/Cu Pre-Coat Condenser and Al/Cu Evaporator
Al/Cu E-Coat Condenser and Al/Cu Evaporator
Cu/Cu Condenser and Al/Cu Evaporator
Hot Gas Bypass - Circuit A (includes ECB2)
Condenser Coil Hail Guard Assembly
Galvanized Drain Pan
Stainless Drain Pan
CONTROLS
Controls Expansion Module (CEM)
BACnet Communications
System Pilot™ Interface
Touch Pilot™ Interface
Navigator™ Display
Return Air CO2 Sensor
Return Air Smoke Detector
Filter Switch
Fan Status Switch (requires CEM)
T55 Thermostat
T56 Thermostat
T58 Sensor
Space Temperature Sensor with CO2 Override
Space Temperature Sensor Setpoint and CO2 Override
Thermostats (Temp System)
Thermostats (Debonair®)
Thermostats (Slimline)
Thermostats (Corporate)
MODBUS Carrier Translator
LonWorks Carrier Translator
POWER CIRCUIT
GFI Convenience Outlet (powered)
GFI Convenience Outlet (not powered)
Power Terminal Block
Non-Fused Disconnect
INDOOR MOTOR OPTIONS
Low HP, High Eff
Medium HP, High Eff
High HP, High Eff
Low HP, Premium Eff
Medium HP, Premium Eff
High HP, Premium Eff
Bypass on IFM VFD
PACKAGING
Domestic
Export
MISCELLANEOUS OPTIONS
14-inch Roof Curb
Full-perimeter Roof Curb
Security Grille (60 Ton Unit Only)
Motormaster® V Control
LEGEND
Al — Aluminum
Cu — Copper
GFI — Ground Fault Circuit Interrupter
18
IFM — Indoor Fan Motor
LP — Liquid Propane
VFD — Variable Frequency Drive
FACTORY-INSTALLED OPTIONS
A2
A3
A4
A5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
FIELD-INSTALLED ACCESSORIES
A2
A3
A4
A5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for
removal of evaporator coil)
4. For smaller service and operational clearances, contact Carrier application engineering department.
5. Bottom ducts are designed to be attached to
accessory roof curb. If unit is mounted on
dunnage, it is recommended that the ducts
be supported by cross braces as done on
accessory roof curb.
6. Dimensions in [ ] are in millimeters. All other
dimensions are in inches.
*Operating weight includes largest indoor fan motor, microchannel heat exchanger, modulating power exhaust (variable air volume units), and variable frequency drive (variable
air volume units).
Base unit dimensions — 48A2,A3020-035
a48-8342
19
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for
removal of evaporator coil)
4. For smaller service and operational clearances,
contact Carrier application engineering department.
5. Bottom ducts are designed to be attached to accessory roof curb. If unit is mounted on dunnage,
it is recommended that the ducts be supported
by cross braces as done on accessory roof curb.
6. Dimensions in [ ] are in millimeters. All other dimensions are in inches.
*Operating weight includes largest indoor fan motor, microchannel
heat exchanger, modulating power exhaust (variable air volume
units), and variable frequency drive (variable air volume units).
Base unit dimensions — 48A2,A3040,050
20
a48-8343
FOR CENTERS OF GRAVITY,
OPERATING AND
CORNER
WEIGHTS, SEE PAGE 25
Base unit dimensions — 48A2,A3060
a48-8337
21
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for
removal of evaporator coil)
4. For smaller service and operational clearances,
contact Carrier application engineering department.
5. Dimensions in [ ] are in millimeters. All other
dimensions are in inches.
*Operating weight includes largest indoor fan motor,
microchannel heat exchanger, modulating power exhaust
(variable air volume units), and variable frequency drive
(variable air volume units).
Base unit dimensions — 48A4,A5020-035
22
a48-8345
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for removal of
evaporator coil)
4. For smaller service and operational clearances, contact
Carrier application engineering department.
5. Dimensions in [ ] are in millimeters. All other dimensions
are in inches.
*Operating weight includes largest indoor fan motor, microchannel heat
exchanger, modulating power exhaust (variable air volume units), and
variable frequency drive (variable air volume units).
Base unit dimensions — 48A4,A5040,050
a48-8346
23
FOR CENTERS OF GRAVITY,
OPERATING AND CORNER
WEIGHTS, SEE PAGE 25
Base unit dimensions — 48A4,A5060
24
a48-8340
a48-8348
25
NOTES:
1. Weights include economizer or outdoor air damper.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for removal of evaporator
coil)
4. For smaller service and operational clearances, contact Carrier
application engineering department.
5. Bottom ducts are designed to be attached to accessory roof curb.
If unit is mounted on dunnage, it is recommended that the ducts
be supported by cross braces as done on accessory roof curb.
6. Base unit weights include outdoor air hoods and filters (indoor fan
motor is not included). Add indoor fan motor, FIOPs, and accessories for total operating weight.
7. VAV motor weights include indoor motor, VFD, VFD transducer,
and associated wiring.
8. Dimensions in [ ] are in millimeters. All other dimensions are in
inches.
9. For side-supply/return applications, a single return and supply
ductwork connection is recommended for covering all three return and all three supply openings. The entire area around the
duct openings is available for a 1.5” duct flange attachment.
2159 1745 2100 2622
3936
48A4,A5 (E, N, T) 060
4146
4310
997
1099
1150
979
907
800
792
964
940
953 1189
968 1096
1024 1058
*Operating weight includes largest indoor fan motor, microchannel heat exchanger,
modulating power exhaust (variable air volume units), and variable frequency drive
(variable air volume units).
3913
3822
48A2,A3 (E, N, T) 060
48A4,A5 (D, M, S) 060
4329
CORNER WEIGHTS
(kg)
1
2
3
4
866 768 1017 1153
1763 2072 2259 2333
OPERATING CENTER OF GRAVITY
(mm)
WEIGHT*
(kg)
A
B
48A2,A3 (D, M, S) 060
3804
4514
1048
UNIT SIZE
13 - 7 1/4
3 - 3 1/4
3 - 9 1/4
2000 2126 2134 2417
8676
48A4,A5 (E, N, T) 060
14 - 2 3/8
14 - 1 5/8
3 - 7 1/4
8626
8426
48A2,A3 (E, N, T) 060
48A4,A5 (D, M, S) 060
OPERATING CENTER OF GRAVITY CORNER WEIGHTS (lb)
(ft - in.)
WEIGHT*
(lb)
A
B
1
2
3
4
48A2,A3 (D, M, S) 060
8386
14 - 9 5/8
3 - 5 1/4 1909 1693 2243 2541
UNIT SIZE
CENTER OF GRAVITY AND WEIGHTS — 48A2,A3,A4,A5060
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for removal of
evaporator coil)
4. For smaller service and operational clearances, contact Carrier application engineering department.
5. Bottom ducts are designed to be attached to accessory roof curb. If unit is mounted on dunnage, it is
recommended that the ducts be supported by cross
braces as done on accessory roof curb.
6. Dimensions in [ ] are in millimeters. All other dimensions are in inches.
*Operating weight includes largest indoor fan motor, microchannel heat
exchanger, modulating power exhaust (variable air volume units), and
variable frequency drive (variable air volume units).
Base unit dimensions — 50A2,A3020-035
26
a50-8239
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for removal of
evaporator coil)
4. For smaller service and operational clearances, contact Carrier application engineering department.
5. Bottom ducts are designed to be attached to accessory roof curb. If unit is mounted on dunnage, it is
recommended that the ducts be supported by cross
braces as done on accessory roof curb.
6. Dimensions in [ ] are in millimeters. All other dimensions are in inches.
*Operating weight includes largest indoor fan motor, microchannel
heat exchanger, modulating power exhaust (variable air volume units),
and variable frequency drive (variable air volume units).
Base unit dimensions — 50A2,A3040,050
a50-8240
27
FOR CENTERS OF GRAVITY,
OPERATING AND CORNER
WEIGHTS, SEE PAGE 32
Base unit dimensions — 50A2,A3060
28
a50-8220
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for
removal of evaporator coil)
4. For smaller service and operational clearances, contact Carrier application engineering
department.
5. Dimensions in [ ] are in millimeters. All other
dimensions are in inches.
*Operating weight includes largest indoor fan motor, microchannel heat
exchanger, modulating power exhaust (variable air volume units), and variable frequency drive (variable air volume units).
Base unit dimensions — 50A4,A5020-035
a50-8242
29
NOTES:
1. Weights include economizer.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for removal of
evaporator coil)
4. For smaller service and operational clearances, contact Carrier application engineering department.
5. Dimensions in [ ] are in millimeters. All other dimensions are in
inches.
*Operating weight includes largest indoor fan motor, microchannel heat
exchanger, modulating power exhaust (variable air volume units), and variable
frequency drive (variable air volume units).
Base unit dimensions — 50A4,A5040,050
30
a50-8243
FOR CENTERS OF GRAVITY,
OPERATING AND CORNER
WEIGHTS, SEE PAGE 32
Base unit dimensions — 50A4,A5060
a50-8223
31
32
NOTES:
1. Weights include economizer or outdoor air damper.
2.
center of gravity.
3. Unit clearances:
Top of units: no overhang
Condenser coil: 4’ - 0” [1219]
Economizer side: 6’ - 0” [1829]
Heat side: 4’ - 0” [1219]
Filter access side: 10’ - 0” [3048] (for removal of
evaporator coil)
4. For smaller service and operational clearances, contact Carrier
application engineering department.
5. Bottom ducts are designed to be attached to accessory roof curb. If
unit is mounted on dunnage, it is recommended that the ducts be
supported by cross braces as done on accessory roof curb.
6. Base unit weights include outdoor air hoods and filters (indoor fan
motor is not included). Add indoor fan motor, FIOPs, and accessories for total operating weight.
7. VAV motor weights include indoor motor, VFD, VFD transducer,
and associated wiring.
8. Dimensions in [ ] are in millimeters. All other dimensions are in
inches.
9. For side-supply/return applications, a single return and supply ductwork connection is recommended for covering all three return and
all three supply openings. The entire area around the duct openings is available for a 1.5” duct flange attachment.
4788
1197
732
942
1127 1066
CORNER WEIGHTS
(kg)
1
2
3
4
776 755 1104 1136
OPERATING CENTER OF GRAVITY
(mm)
WEIGHT*
(kg)
A
B
3770
4699
1101
3868
1613 2078 2484 2351
15 - 8 1/2
3 - 11 1/8
8526
OPERATING CENTER OF GRAVITY CORNER WEIGHTS (lb)
(ft - in.)
WEIGHT*
(lb)
A
B
1
2
3
4
8311
15 - 5
3 - 7 3/8 1710 1663 2433 2504
*Operating weight includes largest indoor fan motor, microchannel heat exchanger, modulating power
exhaust (variable air volume units), and variable frequency drive (variable air volume units).
50A4,A5 060
50A2,A3 060
UNIT SIZE
50A4,A5 060
50A2,A3 060
UNIT SIZE
CENTER OF GRAVITY AND WEIGHTS — 50A2,A3,A4,A5060
Base unit dimensions (cont)
a50-8245
NOTES:
1. Unless otherwise specified, all dimensions are to outside of part.
2. Roof curb accessory CRRFCURB005A00 is shipped disassembled.
3. All roof curb parts are to be 14 ga. galvanized steel.
4. Units with electric heat must be installed with a 90° elbow on the supply duct prior to any supply take
offs or branches.
5. Dimensions in [ ] are in millimeters. All other dimensions are in inches.
ROOF CURB SIZES 020-035
Accessory dimensions
a48-8342
33
a48-8305
34
NOTES:
1. Unless otherwise specified, all dimensions are to outside of part.
2. Roof curb accessory CRRFCURB006A00 is shipped disassembled.
3. All roofcurb parts are to be 14 ga. galvanized steel.
4. Units with electric heat must be installed with a 90° elbow on the supply duct prior to any supply take
offs or branches.
5. Dimensions in [ ] are in millimeters. All other dimensions are in inches.
ROOF CURB SIZES 040 AND 050
Accessory dimensions (cont)
a48-6716
ROOF CURB 48A2,A3060/UNIT SUPPORT 48/50A4,A5060
NOTES:
1. Unless otherwise specified, all dimensions are to outside of part.
2. Roof curb accessory CRRFCURB014A00 is shipped disassembled.
3. All roof curb parts are to be 14 ga. galvanized steel.
4. Dimensions in [ ] are in millimeters. All other dimensions are in inches.
a48-8306
a48-6717
35
a50-8195
36
NOTES:
1. Unless otherwise specified, all dimensions are to outside of part.
2. Roof curb accessory CRRFCURB009A00 is shipped disassembled.
3. All roof curb parts are to be 14 ga. galvanized steel.
4. Units with electric heat must be installed with a 90° elbow on the
supply duct prior to any supply take offs or branches.
5. Dimensions in [ ] are in millimeters. All other dimensions are in
inches.
ROOF CURB 50A2,A3060
Accessory dimensions (cont)
a48-6718
POWER EXHAUST AND BAROMETRIC RELIEF
a48-4172
LEGEND
 — Diameter
NOTES:
1. Unless otherwise specified, all dimensions are to outside of part.
2. Dimensions are in inches.
3. Unit sizes 020-050 have 2 fan assemblies. Unit size 060 has 3 fan assemblies.
4. For 48/50A4,A5 units, the accessory power exhaust or barometric relief must be mounted in the field-supplied return ductwork.
MULTIPLE UNIT APPLICATION SPACING
E
A
F
B
C
G
MINIMUM SPACING (FT)
D
UNIT
48A2,A3,A4,A5020
48A2,A3,A4,A5025
48A2,A3,A4,A5027
48A2,A3,A4,A5030
48A2,A3,A4,A5035
48A2,A3,A4,A5040
48A2,A3,A4,A5050
48A2,A3,A4,A5060
A
15
15
15
15
15
15
15
15
B
8
8
8
8
8
8
8
8
C
4
4
4
4
4
4
4
4
D
4
4
4
4
4
8
8
8
E*
10
10
10
10
10
10
10
15
F
8
8
8
8
8
4
4
4
G*
10
10
10
10
10
10
10
15
UNIT
50A2,A3,A4,A5020
50A2,A3,A4,A5025
50A2,A3,A4,A5027
50A2,A3,A4,A5030
50A2,A3,A4,A5035
50A2,A3,A4,A5040
50A2,A3,A4,A5050
50A2,A3,A4,A5060
A
8
8
8
8
8
8
8
8
B
8
8
8
8
8
8
8
8
C
4
4
4
4
4
4
4
4
D
4
4
4
4
4
8
8
8
E*
10
10
10
10
10
10
10
15
F
8
8
8
8
8
4
4
4
G*
10
10
10
10
10
10
10
15
* Required for coil removal. Can reduce to 6 ft if coil removed from top.
a48-8343
37
Selection procedure (with example)
I Determine cooling and heat requirements at
design conditions.
Given:
Type Application . . . . . . . . . . . . . . . . . . . . . VAV
Required Cooling Capacity (TC) . . . .480,000 Btuh
Sensible Heat Capacity (SHC) . . . . .338,000 Btuh
Required Heating Capacity . . . . . . .300,000 Btuh
Design Outdoor Air db Temperature . . . . . . . .95 F
Design Outdoor Air wb Temperature . . . . . . .67 F
Climate Type (as per ASHRAE 90.1 Table D) . . Dry
Indoor-Air Temperature . . . . . . 80 F edb, 67 F ewb
Evaporator Air Quantity. . . . . . . . . . . 16,000 cfm
External Static Pressure . . . . . . . . . . . . .1.4 in. wg
Electrical Characteristics (V-Ph-Hz) . . . . . 460-3-60
Unit Type . . . . . . .Gas Heating Vertical Discharge
II Select the unit based on required cooling
capacity.
Entering Cooling Capacity table at air condenser
entering temperature of 95 F. Unit 48A3D040
at 16,000 cfm and 67 F ewb will provide the
total capacity of 485,000 Btuh and a SHC of
380,000 Btuh. Calculate SHC correction, if
required, using notes under cooling capacity table.
III Select heat capacity of unit to provide design
condition requirements.
In the Gas Heating Capacities and Efficiencies
table note that unit 48A3D040 will provide
324,000 Btuh with an input of 400,000 Btuh.
38
IV Select supply fan to provide design condition
requirements.
Tabulated fan performance includes 2-in. throwaway filters, wet evaporator coil, economizer,
cabinet losses, and roof curb. Find fan rpm and bhp
at 1.4 in. wg and 16,000 cfm on 48A3D040
Fan Performance table for vertical applications.
Find that the fan speed is 1063 rpm and the
power required is 19.06 bhp. Refer to the Motor
Limitations table which shows the 20 hp motor is
required.
V Select unit that corresponds to the power
source available.
The electrical data table shows that a 460-3-60 unit
is available.
VI Select the options and accessories.
As per the ASHRAE 90.1 requirements this unit is
located in a dry climate and therefore is required
to have an economizer. As this is a dry climate
either differential dry bulb changeover, outdoor air
changeover or differential enthalpy should be used.
Outside air enthalpy can not be used.
Select the options and model number using the
options summary and model number charts in the
price pages.
Note as an alternative a computerized selection
program, RTUBuilder, is available for use in selecting and optimizing the unit for your application.
Performance data
COOLING CAPACITIES
48/50A2,A3,A4,A5020 (20 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
4,000
75
268
109
14.1
0.00
261
106
16.0
0.02
253
102
18.2
0.00
244
97
20.7
0.00
234
93
23.4
0.00
228
91
24.9
0.00
72
258
119
14.0
0.00
250
115
16.0
0.00
242
112
18.2
0.00
232
109
20.6
0.00
222
105
23.4
0.00
216
103
25.1
0.12
67
236
141
13.8
0.09
228
138
15.8
0.21
220
134
18.0
0.18
211
130
20.6
0.17
201
126
23.6
0.15
196
124
25.4
0.14
62
214
161
13.7
0.15
207
158
15.7
0.15
200
154
17.9
0.14
191
150
20.7
0.13
182
146
23.9
0.13
178
143
25.7
0.12
57
195
179
13.6
0.14
188
176
15.5
0.13
181
172
17.9
0.13
174
168
20.8
0.13
166
162
24.3
0.15
161
159
26.3
0.15
75
284
113
14.3
0.00
276
110
16.2
0.00
267
106
18.4
0.00
257
101
20.8
0.00
246
97
23.5
0.00
240
95
24.9
0.00
72
272
128
14.2
0.00
264
125
16.1
0.14
254
122
18.3
0.12
244
118
20.8
0.25
233
114
23.4
0.21
227
112
25.0
0.20
Evaporator Air Quantity — Cfm
5,000
6,000
Evaporator Air — Ewb (F)
67
62
57
75
72
67
250 228 208 294 282 260
155 180 201 116 136 168
14.0 13.8 13.7 14.5 14.3 14.1
0.19 0.16 0.17 0.00 0.27 0.18
242 221 200 286 273 252
152 176 194 112 133 164
15.9 15.8 15.6 16.4 16.2 16.0
0.18 0.15 0.17 0.00 0.24 0.18
233 212 198 277 264 242
148 172 198 109 130 161
18.2 18.0 17.9 18.5 18.4 18.2
0.17 0.15 0.20 0.00 0.22 0.17
223 203 187 266 253 232
144 168 187 106 126 156
20.6 20.6 20.8 20.9 20.8 20.7
0.16 0.14 0.19 0.00 0.20 0.16
212 193 180 254 241 220
139 164 180 103 122 152
23.5 23.7 24.0 23.6 23.5 23.5
0.15 0.14 0.22 0.13 0.19 0.16
207 188 175 247 235 215
137 161 175 101 120 150
25.2 25.5 25.8 25.0 25.0 25.1
0.15 0.14 0.24 0.29 0.18 0.16
7,000
62
239
197
13.9
0.17
230
193
15.8
0.16
221
190
18.1
0.16
211
185
20.6
0.15
201
180
23.7
0.15
195
178
25.4
0.15
57
224
224
13.8
0.24
218
218
15.8
0.26
207
207
18.0
0.25
200
200
20.7
0.28
192
192
23.8
0.31
188
188
25.6
0.32
62
262
251
14.1
0.25
253
247
16.1
0.25
245
239
18.2
0.28
235
232
20.7
0.29
225
221
23.5
0.32
219
219
25.1
0.32
57
259
259
14.1
0.44
251
251
16.0
0.46
243
243
18.3
0.47
234
234
20.7
0.49
224
224
23.5
0.52
219
219
25.1
0.53
75
302
121
14.6
0.00
293
118
16.5
0.15
283
115
18.6
0.13
272
112
21.0
0.28
260
108
23.7
0.24
253
106
25.1
0.23
72
289
144
14.4
0.23
280
141
16.3
0.22
271
137
18.5
0.21
260
134
20.9
0.20
247
129
23.6
0.19
241
127
25.0
0.18
67
268
180
14.1
0.19
259
176
16.1
0.18
249
173
18.3
0.18
238
168
20.7
0.17
227
164
23.5
0.17
220
162
25.1
0.17
62
246
213
13.9
0.17
238
210
15.9
0.17
228
206
18.1
0.17
218
201
20.6
0.17
207
195
23.7
0.18
201
192
25.3
0.18
57
232
232
13.8
0.28
226
226
15.8
0.30
218
218
18.0
0.32
211
211
20.6
0.35
202
202
23.7
0.38
198
198
25.4
0.39
48/50A2,A3,A4,A5020 (20 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
8,000
75
308
126
14.7
0.34
298
123
16.6
0.29
288
120
18.7
0.27
277
116
21.1
0.24
264
113
23.7
0.22
257
110
25.1
0.22
72
295
151
14.5
0.22
286
148
16.4
0.21
276
145
18.5
0.21
265
141
20.9
0.20
252
137
23.6
0.19
245
134
25.1
0.19
67
274
191
14.2
0.19
265
188
16.1
0.19
255
184
18.3
0.18
243
180
20.8
0.18
231
175
23.5
0.18
225
173
25.1
0.18
62
252
228
14.0
0.19
243
224
16.0
0.19
234
219
18.2
0.19
223
213
20.6
0.21
213
206
23.6
0.22
207
202
25.2
0.23
57
243
243
13.9
0.34
236
236
15.9
0.36
228
228
18.1
0.38
220
220
20.6
0.41
211
211
23.6
0.43
206
206
25.3
0.44
Evaporator Air Quantity — Cfm
9,000
Evaporator Air — Ewb (F)
75
72
67
62
57
313 299 278 257 251
130 158 202 242 251
14.8 14.5 14.3 14.0 14.0
0.28 0.22 0.20 0.21 0.40
302 290 269 248 244
127 155 199 236 244
16.6 16.4 16.2 16.0 16.0
0.26 0.22 0.20 0.22 0.41
293 280 259 239 236
124 151 195 230 236
18.7 18.6 18.4 18.2 18.2
0.25 0.21 0.19 0.23 0.43
281 269 248 229 227
121 148 191 223 227
21.1 21.0 20.8 20.6 20.6
0.23 0.20 0.19 0.25 0.45
268 256 235 219 218
117 144 186 216 218
23.8 23.7 23.5 23.5 23.6
0.22 0.20 0.19 0.26 0.48
261 248 229 215 213
115 141 184 215 213
25.2 25.1 25.0 25.2 25.2
0.22 0.20 0.19 0.29 0.49
10,000
75
317
135
14.8
0.26
306
131
16.7
0.25
296
129
18.8
0.24
284
125
21.2
0.23
271
121
23.8
0.22
263
119
25.3
0.22
72
303
164
14.6
0.23
294
161
16.5
0.22
284
158
18.6
0.22
272
154
21.0
0.21
258
150
23.7
0.21
251
148
25.1
0.21
67
282
212
14.3
0.21
273
209
16.2
0.21
262
205
18.4
0.20
251
201
20.8
0.20
238
197
23.5
0.20
232
194
25.0
0.20
See legend on page 43.
39
Performance data (cont)
COOLING CAPACITIES (cont)
48/50A2,A3,A4,A5025 (25 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
5,000
75
318
128
18.7
0.00
308
124
20.8
0.00
298
119
23.1
0.00
289
116
25.7
0.00
278
111
28.7
0.00
72
305
142
18.4
0.00
295
139
20.5
0.00
286
136
22.8
0.00
277
133
25.6
0.00
266
128
28.6
0.09
67
281
173
17.9
0.18
274
170
20.1
0.17
265
166
22.5
0.15
256
162
25.3
0.14
245
157
28.5
0.13
62
260
201
17.6
0.13
253
197
19.8
0.12
244
193
22.3
0.12
235
188
25.1
0.11
224
183
28.6
0.11
57
239
226
17.2
0.11
232
222
19.5
0.12
224
217
22.0
0.12
214
208
24.9
0.12
207
203
28.3
0.16
75
335
133
19.0
0.00
324
127
21.1
0.00
312
124
23.4
0.00
302
121
26.0
0.00
289
117
29.0
0.00
72
320
154
18.7
0.11
309
151
20.8
0.10
300
147
23.1
0.24
290
144
25.9
0.21
278
139
28.9
0.19
Evaporator Air Quantity — Cfm
6,250
7,500
Evaporator Air — Ewb (F)
67
62
57
75
72
67
296 274 253 347 331 307
190 224 251 138 165 205
18.2 17.8 17.4 19.3 18.9 18.4
0.16 0.13 0.16 0.00 0.22 0.17
287 266 248 334 319 297
186 220 248 135 161 202
20.3 20.0 19.6 21.3 21.0 20.5
0.16 0.13 0.18 0.00 0.21 0.16
278 257 241 321 309 288
182 216 241 131 157 198
22.8 22.5 22.2 23.6 23.4 23.0
0.15 0.13 0.20 0.13 0.20 0.16
268 247 231 311 298 277
178 211 228 128 153 193
25.6 25.3 25.0 26.2 26.0 25.8
0.15 0.13 0.22 0.11 0.18 0.15
256 236 223 298 285 264
173 205 223 124 149 188
28.7 28.7 28.5 29.2 29.1 28.9
0.14 0.13 0.24 0.26 0.17 0.15
8,750
62
284
242
18.0
0.15
275
242
20.1
0.15
266
236
22.6
0.15
255
231
25.5
0.15
243
225
28.7
0.15
57
268
268
17.7
0.24
261
261
19.9
0.26
254
254
22.4
0.28
245
245
25.3
0.30
236
236
28.5
0.33
62
309
305
18.5
0.26
299
296
20.6
0.26
290
290
23.0
0.29
280
280
25.8
0.31
269
269
28.9
0.34
57
307
307
18.4
0.48
299
299
20.6
0.49
290
290
23.0
0.50
280
280
25.8
0.52
269
269
28.9
0.54
48/50A2,A3,A4,A5025 (25 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
10,000
75
361
152
19.6
0.28
348
148
21.6
0.25
335
144
23.9
0.24
323
140
26.6
0.22
309
136
29.6
0.21
See legend on page 43.
40
72
346
184
19.2
0.20
332
179
21.3
0.20
321
175
23.6
0.19
310
172
26.3
0.18
297
167
29.4
0.19
67
321
234
18.7
0.18
310
230
20.8
0.18
300
226
23.2
0.18
288
222
26.0
0.18
275
217
29.0
0.18
62
297
281
18.2
0.19
288
275
20.4
0.19
278
270
22.8
0.19
268
260
25.5
0.22
256
254
28.7
0.23
57
291
291
18.1
0.38
283
283
20.3
0.40
275
275
22.7
0.41
266
266
25.5
0.43
255
255
28.7
0.46
Evaporator Air Quantity — Cfm
11,250
Evaporator Air — Ewb (F)
75
72
67
62
57
367 351 326 303 300
158 192 248 295 300
19.7 19.3 18.8 18.4 18.3
0.25 0.21 0.19 0.21 0.43
353 337 315 294 291
153 188 244 288 291
21.8 21.4 20.9 20.5 20.4
0.24 0.21 0.19 0.23 0.45
340 325 304 284 283
150 184 240 281 283
24.0 23.7 23.3 22.9 22.9
0.23 0.19 0.19 0.24 0.46
328 314 292 275 274
146 180 235 268 274
26.7 26.4 26.0 25.6 25.7
0.22 0.20 0.19 0.27 0.48
313 300 278 263 263
142 175 230 261 263
29.7 29.4 29.1 28.8 28.8
0.21 0.20 0.19 0.30 0.50
12,500
75
372
163
19.8
0.25
357
159
21.8
0.24
343
155
24.1
0.23
331
151
26.8
0.22
317
147
29.8
0.21
72
355
201
19.4
0.22
341
197
21.5
0.21
330
192
23.8
0.21
318
188
26.5
0.21
303
184
29.5
0.21
67
330
261
18.9
0.20
318
257
21.0
0.20
308
253
23.4
0.20
296
248
26.1
0.20
281
243
29.1
0.20
75
354
145
19.4
0.13
341
141
21.5
0.11
328
137
23.8
0.26
318
134
26.4
0.24
305
130
29.4
0.22
72
339
175
19.1
0.21
327
170
21.2
0.20
316
166
23.5
0.19
304
163
26.2
0.18
290
158
29.1
0.17
67
315
220
18.6
0.17
305
216
20.7
0.17
295
212
23.1
0.17
283
208
25.9
0.17
270
203
28.9
0.16
62
292
264
18.1
0.16
283
260
20.3
0.16
273
255
22.7
0.17
262
249
25.5
0.17
250
242
28.7
0.18
57
280
280
17.9
0.32
273
273
20.1
0.33
265
265
22.6
0.35
257
257
25.4
0.37
247
247
28.6
0.40
COOLING CAPACITIES (cont)
48/50A2,A3,A4,A5027 (27 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
5,500
75
339
138
19.0
0.00
329
134
21.1
0.00
319
130
23.5
0.00
309
125
26.3
0.00
296
120
29.3
0.00
72
324
154
18.7
0.00
313
151
20.8
0.09
305
148
23.3
0.08
294
144
26.1
0.07
281
139
29.3
0.20
67
297
186
18.3
0.15
289
182
20.4
0.13
280
178
23.0
0.13
269
173
25.9
0.12
257
168
29.4
0.12
62
273
215
17.9
0.11
265
211
20.1
0.11
256
207
22.7
0.10
246
202
25.7
0.10
235
196
29.5
0.10
57
251
242
17.6
0.11
243
237
19.8
0.11
235
230
22.4
0.13
228
226
25.4
0.16
220
218
29.3
0.19
75
356
145
19.4
0.00
344
141
21.5
0.00
333
137
23.8
0.13
322
133
26.6
0.10
309
129
29.7
0.08
72
340
168
19.0
0.07
329
164
21.2
0.21
319
160
23.6
0.19
307
156
26.4
0.17
293
151
29.6
0.15
Evaporator Air Quantity — Cfm
6,875
8,250
Evaporator Air — Ewb (F)
67
62
57
75
72
67
312 288 268 368 351 323
204 240 265 153 180 222
18.5 18.1 17.8 19.6 19.3 18.7
0.14 0.12 0.19 0.11 0.19 0.15
303 279 262 355 339 313
201 236 262 149 175 218
20.7 20.4 20.1 21.7 21.4 20.9
0.14 0.12 0.20 0.09 0.18 0.14
293 270 254 344 328 303
196 234 254 145 172 214
23.3 23.0 22.6 24.1 23.8 23.4
0.13 0.12 0.22 0.08 0.17 0.14
282 258 244 332 316 290
192 226 244 142 168 209
26.2 25.9 25.7 26.9 26.7 26.3
0.13 0.12 0.24 0.25 0.16 0.14
269 246 235 317 302 277
186 221 235 137 162 203
29.5 29.5 29.4 30.0 29.8 29.6
0.12 0.12 0.27 0.21 0.15 0.13
9,625
62
298
263
18.3
0.13
289
262
20.5
0.14
278
254
23.1
0.13
266
248
26.0
0.14
254
242
29.5
0.14
57
283
283
18.1
0.26
276
276
20.3
0.28
268
268
22.9
0.30
258
258
25.8
0.33
249
249
29.4
0.35
62
324
324
18.8
0.27
315
315
21.0
0.29
306
306
23.5
0.31
295
295
26.4
0.35
283
283
29.6
0.37
57
324
324
18.8
0.49
315
315
21.0
0.51
305
305
23.5
0.52
295
295
26.4
0.54
282
282
29.6
0.56
75
377
161
19.8
0.27
364
156
21.9
0.24
352
153
24.3
0.23
339
149
27.0
0.20
324
144
30.2
0.19
72
359
190
19.4
0.18
346
186
21.5
0.17
335
182
24.0
0.17
323
178
26.8
0.16
308
172
29.9
0.16
67
331
238
18.9
0.16
321
234
21.1
0.15
309
230
23.6
0.15
297
225
26.4
0.15
282
219
29.7
0.15
62
305
284
18.5
0.15
295
279
20.6
0.16
285
273
23.1
0.16
274
264
26.0
0.18
262
254
29.4
0.20
57
296
296
18.3
0.34
288
288
20.5
0.36
280
280
23.1
0.37
270
270
26.0
0.40
259
259
29.4
0.42
48/50A2,A3,A4,A5027 (27 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
11,000
75
384
168
19.9
0.23
370
163
22.0
0.22
358
160
24.4
0.21
345
155
27.2
0.20
329
151
30.4
0.19
72
365
201
19.6
0.18
353
196
21.7
0.18
342
192
24.1
0.18
328
188
26.9
0.17
312
183
30.0
0.16
67
337
254
19.0
0.17
326
250
21.2
0.17
315
245
23.7
0.16
301
240
26.5
0.16
287
235
29.7
0.16
62
311
301
18.6
0.18
302
294
20.8
0.19
292
284
23.3
0.22
281
275
26.1
0.24
268
268
29.5
0.23
57
307
307
18.5
0.40
299
299
20.7
0.41
290
290
23.2
0.43
280
280
26.1
0.45
268
268
29.5
0.47
Evaporator Air Quantity — Cfm
12,375
Evaporator Air — Ewb (F)
75
72
67
62
57
389 371 342 319 316
174 210 269 309 316
20.0 19.7 19.1 18.7 18.7
0.22 0.19 0.18 0.24 0.45
375 358 331 309 307
170 206 265 301 307
22.1 21.8 21.3 20.9 20.8
0.21 0.19 0.18 0.26 0.46
363 346 319 299 298
166 202 260 295 298
24.5 24.2 23.8 23.4 23.4
0.20 0.19 0.18 0.27 0.48
350 332 305 288 288
162 197 255 285 288
27.4 27.1 26.6 26.2 26.3
0.20 0.18 0.18 0.28 0.50
333 316 290 276 276
157 192 250 276 276
30.6 30.2 29.7 29.5 29.5
0.19 0.18 0.17 0.31 0.52
13,750
75
394
181
20.1
0.22
380
176
22.2
0.21
368
173
24.7
0.21
353
168
27.5
0.20
336
163
30.7
0.19
72
375
219
19.8
0.20
362
215
21.9
0.20
350
211
24.3
0.19
336
206
27.1
0.20
320
201
30.3
0.19
67
346
284
19.2
0.19
334
279
21.3
0.19
322
275
23.8
0.19
308
269
26.6
0.19
293
263
29.8
0.19
See legend on page 43.
41
Performance data (cont)
COOLING CAPACITIES (cont)
48/50A2,A3,A4,A5030 (30 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
6,000
75
370
151
20.2
0.00
362
147
22.8
0.00
351
143
25.7
0.00
339
138
29.0
0.00
326
132
32.8
0.00
72
354
169
19.9
0.00
345
166
22.5
0.00
334
162
25.5
0.10
322
157
28.9
0.20
309
153
33.1
0.16
67
325
203
19.5
0.12
316
199
22.1
0.12
305
194
25.1
0.11
293
189
29.0
0.11
281
184
33.8
0.10
62
298
234
19.2
0.10
288
230
21.8
0.09
278
225
25.1
0.09
267
219
29.3
0.09
256
214
34.3
0.08
57
272
263
18.8
0.10
263
257
21.4
0.10
255
250
24.7
0.12
247
242
28.7
0.15
237
235
34.3
0.16
75
389
157
20.6
0.00
379
154
23.2
0.00
367
151
26.1
0.00
353
147
29.3
0.13
339
142
33.3
0.24
72
371
184
20.3
0.19
361
180
22.9
0.17
349
176
25.9
0.16
336
171
29.3
0.15
322
166
33.4
0.13
Evaporator Air Quantity — Cfm
7,500
9,000
Evaporator Air — Ewb (F)
67
62
57
75
72
67
342 314 293 401 384 354
224 262 287 167 196 243
19.8 19.4 18.9 20.9 20.6 20.1
0.12 0.11 0.20 0.13 0.16 0.13
332 303 276 391 373 343
219 257 276 164 193 238
22.5 22.1 21.6 23.5 23.2 22.7
0.12 0.11 0.13 0.26 0.16 0.13
320 292 274 379 360 330
214 252 274 160 188 233
25.5 25.3 25.0 26.4 26.2 25.8
0.12 0.10 0.21 0.23 0.15 0.13
307 280 265 364 346 317
209 246 265 155 183 228
29.3 29.4 29.1 29.8 29.5 29.4
0.11 0.10 0.24 0.20 0.14 0.12
294 268 256 349 331 303
204 241 256 150 178 222
33.8 34.2 34.0 33.8 33.5 33.8
0.11 0.10 0.26 0.18 0.13 0.12
10,500
62
325
288
19.6
0.12
314
282
22.3
0.12
302
277
25.4
0.12
290
271
29.3
0.12
277
264
34.0
0.13
57
309
309
19.3
0.26
300
300
22.0
0.28
291
291
25.1
0.30
281
281
29.0
0.33
271
271
33.8
0.35
62
356
351
20.1
0.28
344
337
22.7
0.28
334
334
25.8
0.31
322
322
29.4
0.34
310
310
33.7
0.36
57
354
354
20.1
0.49
345
345
22.8
0.50
334
334
25.8
0.52
322
322
29.3
0.54
309
309
33.7
0.56
48/50A2,A3,A4,A5030 (30 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
75
419
183
21.3
0.20
408
180
23.9
0.19
394
175
26.9
0.18
378
170
30.3
0.17
361
165
34.4
0.17
See legend on page 43.
42
Evaporator Air Quantity — Cfm
13,500
Evaporator Air — Ewb (F)
12,000
72
399
219
20.9
0.16
388
215
23.5
0.16
375
211
26.6
0.16
359
205
30.0
0.16
343
200
34.2
0.16
67
369
278
20.4
0.15
357
273
23.0
0.15
344
268
26.0
0.15
329
262
29.6
0.15
314
257
33.9
0.15
62
340
330
19.9
0.17
329
322
22.5
0.19
318
312
25.4
0.21
307
301
29.0
0.24
295
290
33.4
0.26
57
336
336
19.7
0.40
326
326
22.4
0.41
316
316
25.5
0.43
305
305
29.2
0.45
293
293
33.6
0.47
75
426
191
21.4
0.20
414
187
24.0
0.19
399
182
27.0
0.18
383
177
30.5
0.18
366
172
34.7
0.17
72
406
229
21.0
0.18
394
226
23.7
0.17
380
221
26.7
0.17
364
215
30.1
0.17
347
210
34.3
0.17
67
374
294
20.5
0.16
362
290
23.1
0.16
348
284
26.1
0.16
334
278
29.6
0.16
318
272
33.9
0.16
62
347
343
19.9
0.22
338
331
22.6
0.26
328
320
25.6
0.28
314
314
29.3
0.28
302
302
33.6
0.31
57
346
346
19.9
0.45
336
336
22.6
0.46
326
326
25.6
0.48
314
314
29.3
0.50
302
302
33.6
0.52
15,000
75
430
198
21.5
0.20
418
194
24.1
0.19
403
189
27.2
0.19
387
184
30.7
0.18
369
179
34.9
0.18
72
411
240
21.1
0.18
398
236
23.8
0.18
384
231
26.8
0.18
367
225
30.2
0.18
351
220
34.4
0.18
67
379
310
20.6
0.17
366
305
23.2
0.17
352
300
26.2
0.17
337
294
29.7
0.17
321
288
33.9
0.18
75
411
176
21.1
0.22
400
172
23.7
0.21
387
168
26.7
0.19
372
163
30.1
0.18
356
158
34.1
0.17
72
392
208
20.7
0.16
381
204
23.4
0.16
368
200
26.3
0.15
353
195
29.6
0.14
338
190
34.0
0.14
67
362
261
20.2
0.14
351
256
22.9
0.14
338
251
25.9
0.14
324
246
29.5
0.14
309
240
33.8
0.13
62
334
311
19.8
0.14
322
305
22.4
0.14
310
298
25.4
0.15
297
291
29.2
0.16
286
280
33.5
0.19
57
323
323
19.5
0.34
315
315
22.2
0.35
305
305
25.3
0.37
294
294
29.1
0.40
283
283
33.7
0.42
COOLING CAPACITIES (cont)
48/50A2,A3,A4,A5035 (35 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
7,000
75
442
179
24.8
0.00
428
174
27.8
0.00
417
170
31.3
0.00
403
165
35.5
0.00
380
156
39.4
0.00
72
423
206
24.3
0.00
412
201
27.3
0.00
400
197
31.1
0.00
385
191
35.4
0.00
364
182
39.7
0.00
67
394
250
23.6
0.00
384
245
26.9
0.01
371
239
30.8
0.01
356
232
36.0
0.01
337
224
40.9
0.01
62
366
291
23.2
0.01
354
285
26.7
0.01
341
279
31.3
0.01
325
271
37.7
0.01
—
—
—
—
57
338
329
23.1
0.02
326
322
27.0
0.02
312
312
32.9
0.03
308
308
39.3
0.12
—
—
—
—
75
459
189
25.3
0.00
444
184
28.2
0.00
432
179
31.6
0.00
417
174
35.7
0.00
391
165
39.5
0.00
72
440
222
24.7
0.00
426
217
27.7
0.00
415
212
31.2
0.00
400
207
35.5
0.01
376
198
39.5
0.01
Evaporator Air Quantity — Cfm
8,750
10,500
Evaporator Air — Ewb (F)
67
62
57
75
72
67
410 383 363 471 452 421
275 327 363 199 237 299
24.0 23.4 23.2 25.6 25.1 24.3
0.01 0.01 0.10 0.01 0.01 0.01
399 372 352 455 437 410
270 321 352 193 231 294
27.1 26.8 26.7 28.5 28.0 27.3
0.01 0.01 0.13 0.01 0.01 0.01
387 358 341 441 424 397
265 314 341 188 227 289
30.9 30.8 31.2 31.9 31.4 31.0
0.01 0.01 0.16 0.01 0.01 0.02
372 343 328 427 410 381
258 307 328 184 222 283
35.5 36.5 37.4 35.9 35.5 35.3
0.01 0.02 0.19 0.01 0.01 0.02
351
—
—
398 384 360
250
—
—
174 213 274
40.1 —
— 39.5 39.4 39.8
0.01 —
— 0.01 0.01 0.02
12,250
62
395
359
23.6
0.02
384
354
26.9
0.03
370
348
30.8
0.03
355
340
35.8
0.03
335
330
40.9
0.04
57
383
383
23.4
0.21
374
374
26.8
0.23
362
362
30.7
0.25
349
349
36.1
0.28
332
332
41.1
0.31
62
432
432
24.5
0.23
419
419
27.5
0.26
409
409
31.1
0.27
395
395
35.3
0.30
374
374
39.4
0.34
57
432
432
24.5
0.46
419
419
27.5
0.48
408
408
31.1
0.49
395
395
35.3
0.51
374
374
39.4
0.54
75
479
208
25.8
0.01
463
203
28.8
0.02
447
197
32.1
0.02
433
193
36.0
0.02
403
183
39.6
0.01
72
460
252
25.3
0.02
444
246
28.2
0.02
431
241
31.6
0.02
417
236
35.6
0.02
389
227
39.4
0.02
67
430
323
24.5
0.02
417
318
27.5
0.02
405
313
31.0
0.02
389
307
35.3
0.02
366
298
39.6
0.02
62
403
389
23.8
0.04
393
384
27.0
0.05
380
376
30.8
0.05
365
365
35.5
0.07
347
347
40.2
0.12
57
399
399
23.7
0.29
389
389
26.9
0.31
378
378
30.8
0.33
365
365
35.5
0.35
347
347
40.2
0.39
48/50A2,A3,A4,A5035 (35 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
14,000
75
485
217
26.0
0.02
469
212
29.0
0.02
—
—
—
—
—
—
—
—
—
—
—
—
72
466
266
25.5
0.02
451
261
28.4
0.02
436
256
31.7
0.02
421
251
35.7
0.03
393
242
39.4
0.02
67
436
347
24.7
0.03
422
341
27.6
0.03
410
336
31.1
0.03
394
330
35.3
0.03
371
321
39.4
0.03
62
412
411
24.0
0.09
402
402
27.1
0.11
391
391
30.9
0.13
377
377
35.3
0.16
358
358
39.7
0.21
57
411
411
24.0
0.36
401
401
27.1
0.38
390
390
30.9
0.39
377
377
35.3
0.42
358
358
39.7
0.45
Evaporator Air Quantity — Cfm
15,750
Evaporator Air — Ewb (F)
75
72
67
62
57
490 471 442 422 422
226 281 369 422 422
26.1 25.6 24.8 24.3 24.3
0.03 0.03 0.04 0.17 0.42
—
455 426 411 411
—
275 363 411 411
— 28.6 27.7 27.3 27.3
— 0.03 0.04 0.19 0.43
—
439 414 401 400
—
270 358 401 400
— 31.8 31.2 31.0 31.0
— 0.03 0.04 0.21 0.45
—
425 399 387 386
—
265 352 387 386
— 35.7 35.3 35.2 35.2
— 0.03 0.04 0.24 0.47
—
396 375 367 367
—
256 342 367 367
— 39.5 39.4 39.5 39.5
— 0.03 0.05 0.28 0.49
LEGEND
BF
— Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet Bulb
kW — Compressor Motor Power Input
SHC — Sensible Heat Capacity (1000 Btuh)
TC
— Total Capacity (1000 Btuh) Gross
VAV — Variable Air Volume
Boldface — VAV Units Only
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
sensible capacity (Btuh)
tldb = tedb –
1.10 x cfm
tlwb = Wet-bulb temperature corresponding to enthalpy of air
leaving evaporator coil (hlwb)
hlwb = hewb –
total capacity (Btuh)
4.5 x cfm
Where: hewb = Enthalpy of air entering evaporator coil.
17,500
75
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
72
475
295
25.7
0.04
459
290
28.7
0.04
443
284
31.9
0.04
428
279
35.8
0.04
399
270
39.5
0.04
67
446
391
24.9
0.05
431
384
27.8
0.05
418
379
31.3
0.06
403
373
35.3
0.06
378
362
39.3
0.07
3. The SHC is based on 80 F edb temperature of air entering evaporator coil.
Below 80 F edb, subtract (corr factor x cfm) from SHC.
Above 80 F edb, add (corr factor x cfm) to SHC.
BF
79
81
.05
.10
.20
1.04
.98
.87
ENTERING AIR DRY-BULB TEMP (F)
78
77
76
75
under 75
82
83
84
85
over 85
Correction Factor
2.07
3.11
4.14
4.18
Use formula
1.96
2.94
3.92
4.91
shown below.
1.74
2.62
3.49
4.36
Interpolation is permissible.
Correction Factor = 1.10 x (1 – BF) x (edb – 80).
4. Cooling capacities are gross and do not include deduction for indoor
fan motor heat.
5. Variable air volume units will operate down to 70 cfm/ton. Performance at 70 cfm/ton is limited to unloaded operation and may be
additionally limited by edb and ewb conditions.
43
Performance data (cont)
COOLING CAPACITIES (cont)
48/50A2,A3,A4,A5040 (40 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
8,000
75
517
206
25.9
0.00
503
199
29.2
0.00
489
193
33.0
0.00
473
187
37.2
0.00
453
180
42.0
0.00
442
177
44.6
0.00
72
495
235
25.5
0.00
481
230
28.8
0.13
467
224
32.6
0.10
451
218
36.8
0.08
432
211
41.4
0.07
422
207
44.8
0.07
67
459
284
25.0
0.06
446
278
28.5
0.06
431
272
32.3
0.05
414
264
36.8
0.05
397
257
42.2
0.05
389
255
44.1
0.03
62
423
330
24.7
0.04
410
325
28.0
0.03
395
317
32.0
0.04
381
311
36.2
0.03
364
302
42.1
0.03
354
297
45.8
0.04
57
388
371
24.3
0.05
376
364
27.7
0.05
363
356
31.7
0.06
350
346
36.5
0.07
337
332
41.8
0.11
330
327
45.1
0.12
75
542
216
26.3
0.00
525
210
29.6
0.00
510
205
33.4
0.10
492
200
37.6
0.15
471
193
42.5
0.12
460
189
45.2
0.11
72
518
253
25.9
0.10
504
248
29.3
0.09
488
242
33.1
0.08
470
236
37.4
0.08
450
228
42.4
0.07
440
225
45.3
0.07
Evaporator Air Quantity — Cfm
10,000
12,000
Evaporator Air — Ewb (F)
67
62
57
75
72
67
482 445 415 558 533 498
313 370 408 228 270 341
25.4 25.0 24.5 26.6 26.2 25.6
0.06 0.05 0.13 0.15 0.08 0.06
467 431 405 541 519 483
307 363 397 222 265 335
28.8 28.4 27.9 29.9 29.5 29.0
0.06 0.05 0.16 0.13 0.08 0.06
452 416 390 525 503 466
301 356 390 217 260 328
32.6 32.3 31.8 33.7 33.4 32.9
0.05 0.05 0.15 0.11 0.08 0.06
434 399 378 506 484 447
293 348 378 211 253 321
37.0 37.0 36.6 37.9 37.6 37.2
0.05 0.05 0.18 0.10 0.07 0.06
415 381 364 483 462 427
286 340 364 204 245 313
42.4 42.5 42.2 42.6 42.6 42.5
0.05 0.05 0.21 0.09 0.07 0.06
405 372 356 473 451 417
281 336 356 200 241 309
45.3 45.2 45.2 45.5 45.4 45.4
0.05 0.04 0.23 0.09 0.07 0.06
14,000
62
461
408
25.2
0.06
447
400
28.6
0.06
429
392
32.5
0.06
412
384
37.1
0.07
394
375
42.5
0.07
384
369
45.4
0.07
57
439
439
24.8
0.20
427
427
28.3
0.23
414
414
32.1
0.25
401
401
36.7
0.27
386
386
42.2
0.30
378
378
45.2
0.32
62
504
499
25.7
0.23
491
486
29.1
0.25
477
465
32.9
0.29
459
454
37.2
0.30
440
440
42.4
0.32
430
430
45.2
0.33
57
503
503
25.7
0.45
489
489
29.1
0.47
475
475
32.9
0.48
458
458
37.3
0.50
439
439
42.4
0.52
430
430
45.2
0.53
48/50A2,A3,A4,A5040 (40 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
16,000
75
579
249
26.9
0.10
560
243
30.2
0.10
543
238
34.0
0.09
523
232
38.2
0.09
500
224
43.1
0.09
488
220
45.9
0.09
See legend on page 43.
44
72
555
304
26.5
0.09
539
298
29.9
0.09
522
292
33.7
0.08
501
285
38.0
0.08
479
278
42.9
0.08
467
274
45.7
0.08
67
519
394
25.9
0.07
503
388
29.3
0.07
485
380
33.2
0.08
464
373
37.5
0.07
443
365
42.7
0.07
432
361
45.5
0.07
62
483
470
25.4
0.11
468
461
28.8
0.12
451
449
32.6
0.13
435
432
36.9
0.16
420
412
42.0
0.21
412
404
44.4
0.23
57
477
477
25.3
0.35
464
464
28.7
0.37
450
450
32.6
0.39
434
434
37.0
0.41
417
417
42.2
0.43
408
408
45.2
0.45
Evaporator Air Quantity — Cfm
18,000
Evaporator Air — Ewb (F)
75
72
67
62
57
587 563 526 491 491
259 320 419 491 491
27.1 26.6 26.1 25.5 25.5
0.11 0.09 0.08 0.15 0.41
568 546 510 479 478
253 314 412 476 478
30.4 30.0 29.4 28.9 28.9
0.11 0.09 0.09 0.18 0.42
551 528 492 465 463
248 308 405 458 463
34.1 33.8 33.3 32.8 32.8
0.10 0.09 0.08 0.22 0.44
529 507 471 450 447
241 301 397 440 447
38.4 38.1 37.6 37.0 37.1
0.10 0.09 0.08 0.25 0.46
505 484 449 434 429
234 294 389 434 429
43.2 43.0 42.8 42.3 42.3
0.10 0.09 0.09 0.31 0.48
493 473 437 425 420
230 290 384 425 420
46.0 45.8 45.7 45.2 45.2
0.10 0.09 0.09 0.33 0.49
20,000
75
593
269
27.2
0.11
574
263
30.5
0.11
556
258
34.2
0.11
534
251
38.5
0.10
510
244
43.3
0.10
497
240
46.1
0.10
72
569
335
26.7
0.10
552
330
30.1
0.09
534
324
33.9
0.09
512
317
38.2
0.09
489
309
43.1
0.09
477
306
45.9
0.09
67
532
443
26.1
0.09
515
437
29.5
0.09
497
427
33.4
0.09
475
420
37.7
0.10
453
411
42.8
0.10
442
406
45.6
0.10
75
570
239
26.8
0.11
552
233
30.1
0.10
536
228
33.9
0.10
516
221
38.1
0.09
492
214
42.8
0.08
481
211
45.6
0.08
72
546
287
26.4
0.08
531
282
29.7
0.08
514
276
33.5
0.08
493
269
37.8
0.08
472
262
42.8
0.07
460
258
45.6
0.07
67
509
368
25.8
0.07
494
362
29.2
0.07
477
355
33.0
0.07
457
347
37.4
0.07
436
339
42.7
0.06
425
335
45.6
0.06
62
473
441
25.3
0.08
458
434
28.7
0.08
442
425
32.6
0.09
423
414
37.0
0.10
405
402
42.3
0.11
395
395
45.2
0.12
57
460
460
25.1
0.29
448
448
28.5
0.31
434
434
32.4
0.33
419
419
36.8
0.35
403
403
42.2
0.37
395
395
45.2
0.39
COOLING CAPACITIES (cont)
48/50A2,A3,A4,A5050 (50 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
10,000
75
632
254
30.8
0.00
612
246
34.8
0.00
597
239
39.5
0.00
576
233
44.9
0.00
553
226
51.9
0.00
541
221
56.0
0.13
72
601
292
30.4
0.07
586
286
34.4
0.07
566
279
38.9
0.05
549
271
44.9
0.05
526
262
52.2
0.04
513
257
56.9
0.04
67
556
353
29.8
0.03
540
347
33.8
0.02
523
338
38.9
0.03
503
329
45.4
0.03
480
319
53.4
0.02
467
314
58.0
0.02
62
512
411
29.2
0.01
497
403
33.8
0.02
480
396
38.4
0.01
461
387
45.0
0.01
436
374
55.1
0.01
—
—
—
—
57
471
463
29.0
0.03
457
453
33.2
0.04
441
441
38.7
0.05
426
426
45.7
0.09
408
408
54.4
0.12
—
—
—
—
Evaporator Air Quantity — Cfm
12,500
Evaporator Air — Ewb (F)
75
72
67
62
57
663
630
584
541
508
271
316
391
463
508
31.3
30.8
30.1
29.7
29.2
0.10
0.05
0.03
0.02
0.13
640
614
568
523
495
263
310
384
454
495
35.3
34.9
34.4
34.1
33.6
0.13
0.05
0.03
0.03
0.15
623
595
549
504
480
257
303
376
445
480
39.9
39.7
39.3
39.5
38.6
0.10
0.04
0.03
0.02
0.18
600
573
527
483
463
249
295
367
435
463
45.4
45.5
45.7
46.5
45.5
0.08
0.04
0.03
0.03
0.20
576
549
503
458
444
241
286
357
423
444
52.5
53.0
53.8
55.1
53.9
0.07
0.04
0.03
0.03
0.24
563
535
489
—
—
237
281
351
—
—
57.0
57.3
58.9
—
—
0.06
0.04
0.03
—
—
15,000
75
682
286
31.5
0.08
659
278
35.5
0.07
641
272
40.3
0.07
617
264
45.9
0.06
592
256
53.1
0.05
577
251
57.2
0.05
72
651
339
31.1
0.05
633
333
35.2
0.04
613
326
40.0
0.04
590
317
45.9
0.04
564
308
53.4
0.04
550
303
57.7
0.04
67
604
428
30.4
0.03
587
421
34.7
0.03
567
412
39.6
0.03
544
403
46.2
0.03
518
393
54.5
0.03
504
387
59.2
0.03
62
560
511
30.0
0.04
542
502
34.3
0.04
522
493
39.5
0.04
500
482
46.1
0.04
476
469
54.0
0.05
463
461
58.5
0.06
57
539
539
29.6
0.23
526
526
33.9
0.25
510
510
38.8
0.27
492
492
45.4
0.30
472
472
53.6
0.32
462
462
58.3
0.34
48/50A2,A3,A4,A5050 (50 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
Evaporator Air Quantity — Cfm
17,500
75
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
72
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
67
619
463
30.6
0.04
602
456
35.0
0.04
580
447
39.9
0.04
557
439
46.4
0.03
530
428
54.5
0.03
514
422
60.0
0.04
20,000
Evaporator Air — Ewb (F)
62
57
75
72
575
565
—
—
555
565
—
—
30.1
29.9
—
—
0.05
0.31
—
—
557
551
—
—
546
551
—
—
34.4
34.2
—
—
0.06
0.32
—
—
537
534
—
—
533
534
—
—
39.2
39.1
—
—
0.07
0.35
—
—
517
516
—
—
514
516
—
—
45.4
45.5
—
—
0.10
0.37
—
—
497
495
—
—
492
495
—
—
53.0
53.3
—
—
0.14
0.39
—
—
485
484
—
—
482
484
—
—
57.6
57.9
—
—
0.16
0.41
—
—
67
631
498
30.8
0.04
613
491
35.1
0.04
590
482
40.1
0.04
566
472
46.9
0.04
538
462
55.0
0.04
523
456
59.7
0.04
62
587
583
30.2
0.11
573
568
34.4
0.13
557
550
39.3
0.16
538
530
45.3
0.20
514
514
53.2
0.21
502
502
57.8
0.23
57
585
585
30.2
0.37
571
571
34.4
0.39
554
554
39.3
0.41
535
535
45.5
0.43
513
513
53.2
0.45
501
501
57.8
0.46
See legend on page 43.
45
Performance data (cont)
COOLING CAPACITIES (cont)
48/50A2,A3,A4,A5060 (60 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
57
554
533
36.3
0.08
537
522
40.9
0.09
519
510
46.1
0.10
502
493
51.8
0.13
484
474
59.2
0.17
471
461
63.3
0.17
Evaporator Air Quantity — Cfm
15,000
Evaporator Air — Ewb (F)
75
72
67
62
57
773
736
684
633
592
305
361
447
530
578
40.7
39.9
38.7
37.7
36.9
0.00
0.15
0.10
0.09
0.19
748
715
664
615
579
298
353
439
521
562
45.1
44.4
43.3
42.3
41.5
0.00
0.14
0.10
0.09
0.22
725
694
643
593
557
292
346
430
511
557
50.2
49.5
48.4
47.5
46.8
0.00
0.13
0.09
0.09
0.20
699
669
619
570
539
283
337
420
500
539
55.9
55.3
54.2
53.3
52.6
0.24
0.12
0.09
0.08
0.22
670
641
592
544
519
274
327
410
488
519
62.3
61.7
60.9
60.4
59.9
0.18
0.11
0.09
0.08
0.25
654
626
578
531
509
269
322
404
482
509
65.8
65.5
64.9
64.5
64.0
0.17
0.10
0.09
0.09
0.27
57
651
651
38.1
0.33
634
634
42.7
0.35
616
616
47.9
0.36
596
596
53.8
0.39
573
573
60.6
0.41
561
561
64.6
0.42
Evaporator Air Quantity — Cfm
24,000
Evaporator Air — Ewb (F)
75
72
67
62
57
826
789
735
683
674
355
432
560
665
674
41.9
41.0
39.8
38.7
38.5
0.16
0.14
0.12
0.16
0.39
796
764
713
662
656
346
423
552
648
656
46.3
45.5
44.3
43.2
43.1
0.15
0.14
0.12
0.18
0.41
770
739
689
640
638
338
415
543
630
638
51.4
50.6
49.5
48.4
48.3
0.15
0.13
0.12
0.20
0.42
742
711
662
620
616
330
406
533
608
616
57.1
56.4
55.3
54.2
54.2
0.14
0.13
0.12
0.23
0.44
709
679
631
596
592
320
396
521
583
592
63.5
62.7
61.8
60.8
60.8
0.13
0.13
0.12
0.26
0.47
691
662
616
584
580
315
390
515
570
580
67.0
66.3
65.7
64.7
64.8
0.13
0.13
0.12
0.28
0.48
12,000
75
738
293
40.0
0.00
716
284
44.4
0.00
695
276
49.5
0.00
673
264
55.3
0.00
647
255
61.7
0.00
632
251
65.2
0.00
72
705
334
39.2
0.00
686
327
43.7
0.12
666
320
48.8
0.19
643
311
54.6
0.15
617
301
61.1
0.13
603
296
64.8
0.12
67
653
406
38.1
0.10
635
398
42.7
0.10
615
389
47.8
0.09
593
380
53.7
0.09
567
369
60.3
0.08
554
364
64.3
0.08
62
603
474
37.1
0.08
585
465
41.7
0.07
566
456
46.9
0.07
545
446
52.8
0.07
521
434
60.0
0.07
508
428
64.1
0.07
18,000
75
796
324
41.2
0.23
768
315
45.6
0.20
745
308
50.7
0.18
718
300
56.4
0.16
687
290
62.8
0.14
670
285
66.4
0.13
72
759
386
40.4
0.13
737
378
44.9
0.12
713
370
50.0
0.12
687
361
55.7
0.12
657
350
62.2
0.11
641
345
65.8
0.11
67
706
486
39.2
0.11
685
478
43.7
0.11
662
469
48.8
0.10
638
460
54.7
0.10
609
448
61.3
0.10
594
443
65.2
0.10
62
655
582
38.2
0.10
635
572
42.7
0.10
613
561
47.9
0.10
587
549
53.7
0.11
561
536
60.6
0.11
547
528
64.7
0.12
57
622
622
37.5
0.25
607
607
42.1
0.27
590
590
47.4
0.29
570
570
53.3
0.31
549
549
60.2
0.34
538
538
64.4
0.35
62
695
689
39.0
0.21
678
665
43.6
0.25
659
644
48.8
0.27
637
622
54.6
0.30
612
596
61.1
0.33
600
584
65.0
0.35
57
693
693
38.9
0.44
675
675
43.5
0.46
656
656
48.7
0.47
634
634
54.6
0.49
609
609
61.1
0.51
595
595
65.4
0.52
48/50A2,A3,A4,A5060 (60 TONS) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
75
85
95
105
115
120
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
TC
SHC
kW
BF
21,000
75
813
340
41.6
0.18
784
331
46.0
0.16
759
323
51.1
0.15
731
315
56.8
0.14
699
305
63.2
0.13
682
300
66.7
0.13
See legend on page 43.
46
72
776
409
40.7
0.13
752
401
45.2
0.13
728
393
50.4
0.13
701
384
56.1
0.12
670
373
62.5
0.12
653
368
66.1
0.12
67
722
523
39.5
0.11
700
515
44.1
0.11
678
507
49.2
0.11
651
497
55.0
0.11
622
485
61.5
0.11
607
480
65.4
0.11
62
671
627
38.5
0.12
650
617
43.0
0.13
627
604
48.2
0.14
602
589
54.0
0.15
576
568
60.6
0.17
564
555
64.4
0.19
27,000
75
837
369
42.2
0.16
806
361
46.5
0.15
780
353
51.6
0.15
750
344
57.3
0.14
716
334
63.6
0.14
698
329
67.1
0.13
72
800
454
41.3
0.14
774
446
45.8
0.14
748
437
50.9
0.14
720
428
56.6
0.14
687
418
62.9
0.14
670
412
66.5
0.13
67
745
594
40.1
0.13
723
587
44.6
0.13
698
577
49.7
0.13
670
566
55.5
0.13
639
555
62.0
0.13
623
549
65.8
0.13
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS
48A2,A3 020 (20 TONS)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
0.2
Rpm Bhp
328
0.62
369
0.97
415
1.43
463
2.01
488
2.36
513
2.74
564
3.61
616
4.64
0.6
Rpm Bhp
472
1.07
500
1.43
533
1.90
570
2.50
590
2.86
611
3.24
655
4.13
701
5.18
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
529
1.30
580
1.54
626
1.78 668
2.02
554
1.69
604
1.95
650
2.21 692
2.48
584
2.17
631
2.45
676
2.73 717
3.01
618
2.78
662
3.06
704
3.36 744
3.65
636
3.13
679
3.42
720
3.72 759
4.02
655
3.52
697
3.81
737
4.11 775
4.42
696
4.42
735
4.71
772
5.02 808
5.33
739
5.47
776
5.77
811
6.08 845
6.40
1.6
Rpm Bhp
708
2.27
731
2.74
756
3.30
782
3.96
796
4.33
811
4.74
843
5.65
878
6.72
1.8
Rpm Bhp
745
2.51
769
3.01
793
3.59
818
4.27
832
4.65
846
5.06
876
5.98
909
7.06
2.0
Rpm Bhp
780
2.76
804
3.28
828
3.88
852
4.58
866
4.96
879
5.38
909
6.32
940
7.40
2.6
Rpm Bhp
876 3.51
900 4.10
923 4.76
947 5.51
960 5.93
973 6.37
999 7.35
1028 8.46
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
905
3.76
934
4.02
961
4.28
987
4.54
929
4.37
958
4.64
985
4.92 1012
5.20
953
5.05
981
5.35 1009
5.65 1036
5.94
977
5.83 1005
6.14 1033
6.46 1059
6.78
989
6.25 1017
6.58 1045
6.90 1071
7.23
1002
6.70 1030
7.04 1057
7.37 1083
7.71
1028
7.69 1055
8.04 1082
8.39 1109
8.75
1056
8.82 1083
9.18 1109
9.54 1135
9.91
3.6
Rpm Bhp
1013
4.80
1038
5.48
1062
6.24
1085
7.09
1097
7.56
1109
8.04
1134
9.10
1160 10.28
3.8
Rpm Bhp
1038
5.06
1063
5.76
1087
6.54
1110
7.41
1122
7.88
1134
8.38
1159
9.45
1185 10.65
4.0
Rpm Bhp
1062 5.32
1087 6.04
1111 6.84
1135 7.73
1147 8.21
1159 8.72
1183 9.81
—
—
0.4
0.6
Rpm Bhp Rpm Bhp
443
1.20 503
1.45
482
1.68 538
1.93
526
2.28 576
2.54
572
3.03 619
3.29
621
3.92 664
4.19
671
4.97 711
5.25
722
6.19 759
6.48
774
7.59 809
7.88
827
9.16 860
9.46
880 10.93 912 11.24
934 12.89 964 13.21
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
558
1.70
607
1.96
653
2.23
695
2.49
589
2.20
636
2.47
680
2.75
721
3.04
623
2.81
668
3.10
710
3.39
749
3.69
662
3.57
704
3.86
743
4.16
781
4.47
704
4.47
743
4.77
780
5.08
815
5.40
748
5.54
784
5.84
819
6.15
853
6.47
795
6.77
828
7.08
861
7.40
893
7.72
842
8.18
874
8.49
905
8.82
935
9.15
891
9.78
922 10.09
951 10.42
979 10.75
941 11.56
970 11.88
998 12.21 1025 12.56
992 13.54 1020 13.87 1046 14.21 1072 14.55
1.6
Rpm Bhp
734
2.76
759
3.33
787
4.00
817
4.79
850
5.72
885
6.81
924
8.06
965
9.48
1007 11.10
1052 12.90
1098 14.91
1.8
Rpm Bhp
771
3.03
796
3.62
823
4.31
851
5.11
883
6.05
917
7.14
954
8.40
993
9.83
1034 11.45
1078 13.26
1122 15.26
2.0
Rpm Bhp
806
3.30
831
3.91
857
4.62
885
5.44
915
6.39
948
7.49
983
8.75
1021 10.19
1061 11.80
1103 13.62
1147 15.63
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
931
4.39
960
4.66
987
4.94 1014
5.22
956
5.08
984
5.38 1012
5.68 1038
5.97
980
5.87 1009
6.18 1036
6.50 1063
6.82
1006
6.76 1034
7.09 1061
7.43 1088
7.76
1033
7.76 1061
8.11 1088
8.46 1114
8.82
1063
8.91 1089
9.27 1116
9.63 1141 10.00
1094 10.20 1120 10.57 1145 10.95 1170 11.33
1127 11.66 1152 12.04 1177 12.42
—
—
1163 13.30 1187 13.68
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1039
5.50
1064
6.27
1088
7.14
1113
8.10
1139
9.17
1166 10.37
1195 11.71
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1064
5.78
1089
6.57
1114
7.45
1138
8.43
1164
9.52
1191 10.74
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1089 6.06
1114 6.87
1138 7.77
1163 8.77
1188 9.88
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
406
0.84
439
1.19
477
1.65
519
2.25
541
2.60
564
2.98
612
3.87
661
4.91
48A2,A3 020 (20 TONS) (cont)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
2.2
Rpm Bhp
814
3.01
837
3.55
861
4.17
885
4.89
898
5.28
912
5.71
940
6.66
971
7.75
2.4
Rpm Bhp
845
3.26
869
3.82
893
4.46
917
5.20
930
5.61
943
6.04
970
7.00
1000
8.10
48A2,A3 025-030 (25 THRU 30 TONS)
Airflow
(Cfm)
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
0.2
Rpm Bhp
374
0.98
421
1.45
471
2.04
522
2.78
574
3.66
628
4.71
682
5.91
736
7.30
791
8.86
846 10.61
902 12.56
48A2,A3 025-030 (25 THRU 30 TONS) (cont)
Airflow
(Cfm)
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
2.2
Rpm Bhp
839
3.57
864
4.20
890
4.93
917
5.76
946
6.73
978
7.84
1012
9.10
1048 10.54
1087 12.17
1128 13.98
1171 16.00
2.4
Rpm Bhp
871
3.84
896
4.49
921
5.24
948
6.09
976
7.07
1007
8.19
1040
9.47
1075 10.91
1113 12.54
1153 14.36
1194 16.38
2.6
Rpm Bhp
902
4.11
926
4.79
951
5.55
977
6.42
1005
7.42
1035
8.55
1067
9.83
1102 11.28
1138 12.91
1177 14.74
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
47
Performance data (cont)
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
48A2,A3 035 (35 TONS)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
0.2
Rpm Bhp
534
2.46
590
3.27
646
4.23
704
5.35
733
5.97
762
6.63
820
8.09
879
9.72
938 11.54
997 13.56
1056 15.78
1116 18.20
1145 19.49
0.6
Rpm Bhp
630
3.13
677
3.99
726
5.00
778
6.17
804
6.82
830
7.51
884
9.01
939 10.70
995 12.58
1051 14.64
1107 16.91
1164 19.38
1193 20.70
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
674
3.48
716
3.82
756
4.16
793
4.50
718
4.35
757
4.72
794
5.08
830
5.45
764
5.38
800
5.76
835
6.15
869
6.54
812
6.57
846
6.97
879
7.38
911
7.78
837
7.23
870
7.64
902
8.05
933
8.46
863
7.93
894
8.35
925
8.77
955
9.19
915
9.46
944
9.90
973 10.34 1001 10.78
968 11.17
996 11.63 1023 12.09 1050 12.55
1022 13.07 1048 13.55 1074 14.03 1099 14.51
1076 15.16 1102 15.67 1126 16.17 1150 16.66
1132 17.45 1156 17.98 1179 18.50 1202 19.02
1188 19.95 1210 20.50 1233 21.05 1255 21.58
1216 21.28 1238 21.84 1260 22.40 1282 22.94
1.6
Rpm Bhp
829
4.83
864
5.81
902
6.93
942
8.19
963
8.88
984
9.62
1029 11.22
1076 13.01
1124 14.98
1174 17.16
1225 19.53
1276 22.11
—
—
2.4
Rpm Bhp
956
6.13
989
7.25
1023
8.47
1058
9.82
1077 10.56
1095 11.33
1135 13.00
1176 14.84
1220 16.88
1265 19.12
—
—
—
—
—
—
2.6
Rpm Bhp
985
6.45
1018
7.60
1051
8.85
1085 10.23
1103 10.97
1122 11.76
1160 13.44
1200 15.31
1243 17.36
1287 19.61
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1012
6.76 1039
7.06 1065
7.37 1090
7.67
1045
7.94 1072
8.29 1098
8.63 1122
8.96
1078
9.23 1104
9.61 1130
9.98 1155 10.35
1112 10.64 1138 11.04 1163 11.44 1188 11.84
1129 11.39 1155 11.81 1180 12.23 1204 12.64
1147 12.18 1173 12.61 1197 13.04 1221 13.47
1185 13.89 1209 14.34 1233 14.79 1256 15.24
1224 15.77 1248 16.24 1271 16.70 1293 17.17
1266 17.84 1288 18.32
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Rpm
1114
1147
1179
1212
1228
1245
1279
—
—
—
—
—
—
0.4
Rpm Bhp
550
3.30
595
4.24
642
5.34
689
6.62
738
8.09
788
9.76
838 11.64
888 13.74
940 16.06
991 18.62
1043 21.43
1095 24.50
1147 27.82
0.6
Rpm Bhp
596
3.71
637
4.67
680
5.80
725
7.11
771
8.60
818 10.29
867 12.19
915 14.31
965 16.65
1015 19.23
1066 22.06
1117 25.14
1168 28.48
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
639
4.12
680
4.54
720
4.97
759
5.40
677
5.11
715
5.55
752
6.00
788
6.45
717
6.26
752
6.73
787
7.20
821
7.67
759
7.59
792
8.08
825
8.58
856
9.07
803
9.11
834
9.63
865 10.14
895 10.66
848 10.83
878 11.36
906 11.90
935 12.44
895 12.74
922 13.30
950 13.87
976 14.43
942 14.88
968 15.46
994 16.05 1019 16.63
990 17.24 1015 17.85 1039 18.45 1063 19.06
1039 19.85 1062 20.47 1086 21.09 1109 21.72
1088 22.69 1111 23.33 1133 23.97 1155 24.62
1138 25.79 1159 26.44 1180 27.11 1201 27.77
1188 29.15
—
—
—
—
—
—
1.6
Rpm Bhp
796
5.85
823
6.92
854
8.16
887
9.57
924 11.18
962 12.99
1002 15.00
1044 17.22
1087 19.67
1131 22.35
1176 25.27
1222 28.45
—
—
1.8
Rpm Bhp
832
6.31
857
7.39
886
8.64
918 10.08
952 11.71
989 13.53
1028 15.57
1068 17.81
1110 20.28
1153 22.98
1197 25.92
1242 29.12
—
—
2.0
Rpm Bhp
867
6.77
890
7.87
917
9.14
947 10.59
980 12.24
1016 14.08
1053 16.14
1093 18.40
1133 20.89
1175 23.61
1219 26.58
—
—
—
—
2.6
Rpm Bhp
965
8.20
985
9.35
1007 10.66
1033 12.16
1062 13.86
1093 15.76
1127 17.86
1163 20.19
1200 22.74
1240 25.52
1280 28.55
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
995
8.69 1024
9.19 1053
9.69 1081 10.19
1014
9.86 1043 10.37 1072 10.89 1099 11.41
1036 11.19 1064 11.71 1092 12.25 1119 12.78
1061 12.70 1088 13.24 1114 13.79 1140 14.34
1088 14.41 1114 14.97 1139 15.53 1164 16.09
1118 16.32 1143 16.89 1167 17.47 1191 18.05
1151 18.45 1174 19.03 1198 19.63 1221 20.22
1186 20.79 1208 21.40 1230 22.00 1253 22.62
1222 23.36 1244 23.98 1265 24.61 1286 25.24
1261 26.17 1281 26.81
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1108 10.70
1126 11.94
1145 13.33
1166 14.90
1189 16.67
1215 18.64
1244 20.82
1274 23.23
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1134 11.21
1152 12.47
1171 13.88
1191 15.46
1213 17.24
1238 19.23
1266 21.43
1296 23.85
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1159 11.73
1177 13.00
1196 14.43
1216 16.03
1237 17.83
1262 19.82
1288 22.04
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
584
2.80
635
3.63
687
4.62
742
5.77
769
6.40
797
7.08
853
8.56
909 10.22
967 12.07
1024 14.11
1082 16.35
1140 18.80
1170 20.10
1.8
Rpm Bhp
863
5.17
897
6.18
934
7.31
972
8.60
992
9.30
1013 10.04
1056 11.66
1102 13.46
1149 15.46
1197 17.65
1247 20.04
1298 22.64
—
—
2.0
Rpm Bhp
896
5.49
929
6.54
964
7.70
1002
9.01
1021
9.72
1041 10.47
1083 12.10
1127 13.92
1173 15.93
1220 18.14
1269 20.55
—
—
—
—
48A2,A3 035 (35 TONS) (cont)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
2.2
Rpm Bhp
927
5.81
960
6.89
994
8.09
1030
9.42
1049 10.14
1069 10.90
1109 12.55
1152 14.38
1196 16.41
1243 18.63
1290 21.06
—
—
—
—
3.6
Bhp
7.97
9.29
10.71
12.24
13.05
13.89
15.69
—
—
—
—
—
—
Rpm
1138
1170
1203
1235
1251
1268
—
—
—
—
—
—
—
3.8
Bhp
8.26
9.62
11.08
12.64
13.46
14.31
—
—
—
—
—
—
—
Rpm
1161
1193
1226
1258
1274
1291
—
—
—
—
—
—
—
4.0
Bhp
8.56
9.95
11.44
13.03
13.87
14.73
—
—
—
—
—
—
—
48A2,A3040 (40 TONS)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
502
2.90
552
3.81
602
4.89
653
6.15
704
7.60
756
9.24
808 11.10
861 13.18
914 15.49
967 18.03
1020 20.82
1073 23.87
1127 27.18
48A2,A3040 (40 TONS) (cont)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
901
7.24
923
8.35
948
9.64
976 11.11
1008 12.77
1042 14.64
1078 16.71
1116 19.00
1156 21.51
1197 24.25
1239 27.24
—
—
—
—
2.4
Rpm Bhp
933
7.72
954
8.85
978 10.15
1005 11.63
1035 13.31
1068 15.19
1103 17.28
1140 19.59
1178 22.12
1218 24.89
1260 27.89
—
—
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
48
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
48A2,A3050 (50 TONS)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
611
5.00
662
6.27
714
7.74
766
9.41
819 11.29
872 13.40
925 15.74
979 18.32
1032 21.15
1086 24.24
1140 27.60
0.6
Rpm Bhp
689
5.91
734
7.23
780
8.75
828 10.46
877 12.39
926 14.54
976 16.91
1027 19.53
1078 22.40
1129 25.52
1181 28.92
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
725
6.37
761
6.84
795
7.31
829
7.79
768
7.72
801
8.21
833
8.71
865
9.20
812
9.26
843
9.77
873 10.29
903 10.81
858 11.00
887 11.54
916 12.08
944 12.62
905 12.95
932 13.51
959 14.07
986 14.63
953 15.11
979 15.70 1004 16.28 1029 16.87
1001 17.51 1026 18.12 1050 18.72 1074 19.33
1051 20.15 1074 20.77 1097 21.40 1120 22.03
1100 23.04 1123 23.68 1145 24.33 1166 24.98
1151 26.18 1172 26.84 1193 27.51 1214 28.18
1202 29.59 1222 30.27 1242 30.95 1262 31.64
1.6
Rpm Bhp
861
8.27
895
9.71
932 11.33
971 13.16
1012 15.20
1054 17.46
1097 19.94
1142 22.66
1188 25.63
1234 28.85
1281 32.33
1.8
Rpm Bhp
893
8.76
925 10.21
960 11.86
998 13.71
1037 15.77
1078 18.05
1121 20.55
1164 23.29
1209 26.28
1255 29.52
—
—
2.0
Rpm Bhp
925
9.26
955 10.73
988 12.39
1024 14.26
1062 16.34
1102 18.64
1143 21.17
1186 23.93
1230 26.93
1275 30.19
—
—
2.4
Rpm Bhp
985 10.27
1012 11.77
1043 13.47
1076 15.38
1111 17.49
1149 19.83
1188 22.40
1229 25.20
1271 28.25
—
—
—
—
2.6
Rpm Bhp
1014 10.79
1040 12.30
1069 14.02
1101 15.94
1136 18.07
1172 20.43
1210 23.01
1250 25.84
1291 28.91
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1043 11.31 1071 11.84 1098 12.37 1125 12.91
1068 12.84 1095 13.38 1121 13.93 1147 14.49
1095 14.57 1121 15.13 1147 15.69 1172 16.26
1126 16.51 1151 17.08 1175 17.66 1199 18.24
1159 18.66 1183 19.25 1206 19.84 1229 20.44
1195 21.03 1217 21.64 1239 22.25 1261 22.86
1232 23.64 1253 24.26 1275 24.89 1296 25.52
1271 26.48 1291 27.12
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1151 13.46
1172 15.05
1196 16.83
1223 18.83
1252 21.04
1283 23.48
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1177 14.01
1197 15.61
1220 17.41
1246 19.42
1274 21.64
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1202 14.56
1222 16.18
1244 18.00
1269 20.02
1296 22.25
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
534
5.04
588
6.96
617
8.09
645
9.34
674 10.71
704 12.21
734 13.84
764 15.60
794 17.49
825 19.53
856 21.71
887 24.04
918 26.52
950 29.15
981 31.95
0.6
Rpm Bhp
585
5.78
636
7.74
662
8.90
689 10.17
717 11.58
745 13.11
773 14.77
802 16.57
831 18.51
861 20.59
890 22.81
920 25.19
951 27.72
981 30.40
1012 33.24
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
632
6.56
674
7.39
714
8.24
751
9.12
680
8.56
720
9.41
758 10.30
793 11.21
704
9.73
744 10.59
781 11.50
816 12.42
730 11.02
768 11.90
804 12.82
839 13.76
756 12.45
793 13.34
829 14.27
862 15.23
783 14.00
819 14.91
853 15.85
886 16.82
810 15.69
845 16.62
879 17.58
911 18.56
838 17.52
872 18.47
905 19.44
936 20.44
866 19.49
899 20.47
931 21.46
961 22.47
894 21.60
927 22.61
958 23.62
987 24.64
923 23.87
954 24.90
985 25.93 1014 26.97
952 26.28
983 27.34 1012 28.40 1041 29.46
982 28.84 1011 29.94 1040 31.02 1068 32.11
1011 31.57 1040 32.70 1068 33.81 1095 34.92
1041 34.46 1070 35.62 1097 36.76 1123 37.90
1.6
Rpm Bhp
786 10.02
827 12.15
849 13.38
871 14.73
894 16.21
918 17.82
942 19.57
966 21.45
991 23.50
1016 25.69
1042 28.03
1068 30.54
1095 33.21
1122 36.04
1149 39.04
1.8
Rpm Bhp
819 10.93
859 13.11
881 14.36
902 15.72
925 17.21
948 18.84
971 20.60
995 22.50
1019 24.55
1044 26.76
1069 29.11
1095 31.63
1121 34.31
1147 37.16
1174 40.18
2.0
Rpm Bhp
851 11.85
890 14.08
911 15.35
932 16.73
954 18.24
977 19.88
1000 21.65
1023 23.57
1047 25.63
1071 27.84
1096 30.21
1121 32.74
1147 35.44
1172 38.30
1199 41.34
2.6
Rpm Bhp
939 14.67
976 17.07
996 18.41
1016 19.86
1036 21.42
1058 23.11
1080 24.92
1102 26.88
1124 28.97
1147 31.22
1171 33.63
1195 36.19
—
—
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
967 15.62
993 16.58 1019 17.54 1045 18.51
1003 18.08 1029 19.11 1054 20.13 1079 21.17
1022 19.45 1048 20.50 1073 21.56 1097 22.63
1042 20.92 1067 22.00 1092 23.08 1116 24.17
1062 22.51 1087 23.60 1112 24.71 1135 25.83
1083 24.21 1108 25.33 1132 26.46 1156 27.60
1105 26.04 1129 27.18 1153 28.33 1176 29.48
1126 28.01 1151 29.17 1174 30.33 1197 31.50
1149 30.13 1173 31.29 1196 32.47
—
—
1172 32.39 1195 33.56
—
—
—
—
1195 34.80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1069 19.48
1103 22.21
1121 23.70
1140 25.28
1159 26.95
1178 28.74
1199 30.65
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1093 20.45
1126 23.26
1144 24.78
1162 26.38
1181 28.09
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1117 21.43
1149 24.31
1167 25.86
1185 27.49
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
651
5.45
699
6.75
748
8.24
798
9.93
848 11.84
899 13.96
951 16.32
1003 18.92
1055 21.77
1108 24.88
1161 28.25
48A2,A3050 (50 TONS) (cont)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
955
9.76
984 11.25
1016 12.93
1050 14.82
1087 16.92
1126 19.23
1166 21.78
1208 24.56
1250 27.59
1294 30.87
—
—
48A2,A3060 (60 TONS)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
0.2
Rpm Bhp
476
4.33
536
6.19
566
7.28
597
8.48
628
9.80
659 11.25
691 12.82
723 14.53
755 16.37
787 18.35
819 20.48
851 22.75
883 25.17
916 27.76
948 30.49
48A2,A3060 (60 TONS) (cont)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
2.2
Rpm Bhp
881 12.78
920 15.06
940 16.36
961 17.76
983 19.28
1005 20.94
1027 22.72
1050 24.65
1073 26.73
1097 28.95
1122 31.33
1146 33.87
1171 36.58
1197 39.46
—
—
2.4
Rpm Bhp
911 13.72
948 16.06
968 17.38
989 18.80
1010 20.34
1032 22.01
1054 23.81
1076 25.76
1099 27.84
1123 30.08
1147 32.47
1171 35.02
1196 37.74
—
—
—
—
LEGEND
Bhp — Brake Horsepower
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
49
Performance data (cont)
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
50A2,A3 020 (20 TONS)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
0.2
Rpm Bhp
311
0.54
347
0.84
387
1.25
430
1.77
452
2.07
474
2.41
519
3.19
565
4.10
0.4
Rpm Bhp
390
0.71
417
1.02
450
1.43
488
1.96
507
2.27
528
2.61
570
3.39
613
4.31
0.6
Rpm Bhp
457
0.88
480
1.21
507
1.63
540
2.17
557
2.48
576
2.82
614
3.60
655
4.53
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
515
1.05
567
1.21
613
1.38
656
1.55
536
1.40
587
1.59
633
1.78
676
1.97
560
1.84
609
2.05
654
2.26
696
2.47
588
2.38
634
2.61
677
2.83
718
3.06
604
2.70
648
2.93
690
3.16
730
3.40
620
3.04
663
3.28
704
3.52
743
3.76
656
3.83
696
4.07
734
4.32
771
4.57
694
4.76
731
5.00
767
5.26
802
5.51
1.6
Rpm Bhp
696
1.71
716
2.16
735
2.68
756
3.29
768
3.63
780
4.00
806
4.82
835
5.78
1.8
Rpm Bhp
733
1.88
753
2.34
773
2.88
793
3.51
804
3.87
816
4.24
840
5.08
868
6.04
2.0
Rpm Bhp
768
2.04
788
2.52
808
3.09
828
3.74
839
4.10
850
4.48
873
5.34
900
6.31
2.6
Rpm Bhp
864 2.55
885 3.08
905 3.70
924 4.41
934 4.79
945 5.21
966 6.11
990 7.13
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
893
2.71
921
2.88
949
3.06
975
3.23
914
3.26
943
3.45
970
3.64
997
3.82
934
3.90
963
4.10
991
4.31 1017
4.51
954
4.63
983
4.85 1010
5.07 1037
5.29
964
5.02
993
5.25 1020
5.48 1047
5.71
974
5.45 1003
5.68 1030
5.92 1057
6.16
995
6.37 1023
6.62 1051
6.88 1077
7.13
1018
7.40 1046
7.67 1073
7.94 1099
8.21
3.6
Rpm Bhp
1001
3.40
1023
4.01
1043
4.71
1063
5.51
1073
5.94
1083
6.39
1103
7.38
1124
8.48
3.8
Rpm Bhp
1026
3.58
1048
4.20
1069
4.91
1089
5.72
1099
6.16
1108
6.63
1129
7.64
1149
8.75
4.0
Rpm Bhp
1050
3.75
1072
4.39
1093
5.12
1113
5.94
1123
6.39
1133
6.87
1153
7.89
1174
9.02
0.6
Rpm Bhp
484
1.22
513
1.65
546
2.19
583
2.85
623
3.65
665
4.58
708
5.67
753
6.90
798
8.30
844
9.88
890 11.62
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
540
1.42
590
1.61
636
1.79
678
1.98
565
1.86
613
2.07
658
2.28
700
2.49
594
2.41
640
2.64
682
2.86
723
3.09
628
3.08
670
3.32
710
3.55
749
3.80
664
3.88
704
4.12
741
4.37
778
4.62
703
4.82
740
5.06
776
5.32
810
5.58
744
5.91
779
6.16
813
6.41
845
6.68
787
7.15
820
7.40
851
7.67
882
7.93
831
8.55
862
8.81
892
9.08
921
9.35
875 10.13 905 10.39 934 10.66
962 10.94
921 11.88 949 12.14 977 12.42 1004 12.70
1.6
Rpm Bhp
718
2.17
739
2.70
761
3.32
786
4.04
813
4.88
843
5.84
877
6.95
912
8.21
950
9.63
989 11.22
1030 12.99
1.8
Rpm Bhp
755
2.35
776
2.90
798
3.54
821
4.28
847
5.13
876
6.11
907
7.22
941
8.49
977
9.92
1015 11.51
1055 13.28
2.0
Rpm Bhp
791
2.54
811
3.11
833
3.77
855
4.52
880
5.39
907
6.38
937
7.50
970
8.78
1005 10.21
1041 11.81
1080 13.58
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
916
3.28
945
3.46
972
3.65
999
3.83
937
3.92
966
4.12
993
4.32 1020
4.53
958
4.66
986
4.88 1014
5.10 1041
5.31
979
5.49 1007
5.72 1035
5.96 1061
6.20
1001
6.42 1029
6.67 1056
6.93 1083
7.18
1025
7.46 1052
7.73 1079
8.00 1105
8.27
1051
8.63 1077
8.92 1103
9.20 1129
9.49
1078
9.94 1104 10.24 1130 10.54 1154 10.83
1109 11.40 1133 11.71 1158 12.01 1182 12.32
1141 13.02 1165 13.33 1188 13.65
—
—
1175 14.81 1198 15.13
—
—
—
—
3.6
Rpm Bhp
1024
4.02
1046
4.73
1067
5.53
1087
6.43
1108
7.43
1130
8.54
1154
9.77
1179 11.13
—
—
—
—
—
—
3.8
Rpm Bhp
1049
4.21
1071
4.93
1092
5.75
1113
6.67
1134
7.69
1155
8.81
1178 10.06
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1074 4.40
1096 5.14
1116 5.97
1137 6.90
1158 7.94
1180 9.08
—
—
—
—
—
—
—
—
—
—
50A2,A3 020 (20 TONS) (cont)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
2.2
Rpm Bhp
802
2.21
822
2.71
842
3.29
862
3.96
872
4.33
883
4.73
905
5.60
931
6.58
2.4
Rpm Bhp
833
2.38
854
2.89
874
3.50
894
4.19
904
4.56
914
4.97
936
5.85
961
6.85
50A2,A3 025-030 (25 THRU 30 TONS)
Airflow
(Cfm)
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
0.2
Rpm Bhp
352
0.85
394
1.26
438
1.79
483
2.44
530
3.23
577
4.15
625
5.22
674
6.45
722
7.85
771
9.41
821 11.15
0.4
Rpm Bhp
422
1.03
456
1.45
495
1.98
536
2.64
579
3.43
624
4.36
669
5.44
715
6.67
762
8.07
810
9.64
857 11.38
50A2,A3 025-030 (25 THRU 30 TONS) (cont)
Airflow
(Cfm)
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
2.2
Rpm Bhp
824
2.72
845
3.31
866
3.99
888
4.77
912
5.65
938
6.65
967
7.78
998
9.07
1031 10.50
1067 12.10
1104 13.88
2.4
Rpm Bhp
856
2.91
877
3.52
898
4.21
919
5.01
942
5.90
968
6.92
995
8.07
1025
9.35
1058 10.80
1092 12.41
1128 14.19
2.6
Rpm Bhp
887
3.09
908
3.72
928
4.43
950
5.25
972
6.16
997
7.19
1023
8.35
1052
9.65
1083 11.10
1117 12.71
1152 14.50
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
50
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
50A2,A3035 (35 TONS)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
0.2
Rpm Bhp
503
1.96
553
2.62
605
3.39
657
4.29
684
4.80
710
5.33
764
6.52
818
7.85
872
9.33
926 10.98
980 12.79
1035 14.77
1062 15.83
0.6
Rpm Bhp
601
2.47
643
3.16
687
3.97
733
4.91
757
5.43
781
5.99
830
7.21
880
8.57
930 10.09
981 11.76
1033 13.60
1085 15.61
1111 16.68
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
646
2.72
689
2.97
730
3.22
768
3.46
684
3.43
724
3.70
763
3.97
799
4.23
726
4.26
763
4.55
798
4.83
833
5.12
769
5.22
803
5.52
837
5.82
870
6.12
791
5.75
825
6.06
857
6.37
889
6.68
814
6.31
847
6.63
878
6.95
909
7.26
861
7.54
891
7.88
921
8.21
950
8.54
909
8.92
938
9.27
966
9.62
993
9.97
958 10.45
985 10.82 1012 11.19 1037 11.55
1008 12.15 1033 12.53 1059 12.91 1083 13.28
1058 14.00 1082 14.40 1106 14.79 1130 15.18
1109 16.03 1132 16.44 1155 16.84 1178 17.25
1134 17.10 1157 17.52 1180 17.94 1202 18.35
1.6
Rpm Bhp
804
3.70
834
4.50
867
5.40
901
6.42
920
6.98
939
7.58
978
8.87
1020 10.31
1063 11.91
1108 13.66
1153 15.57
1200 17.65
1224 18.76
2.4
Rpm Bhp
933
4.62
962
5.52
990
6.52
1020
7.62
1036
8.21
1052
8.84
1086 10.19
1122 11.69
1161 13.34
1201 15.15
1243 17.11
1286 19.25
—
—
2.6
Rpm Bhp
962
4.84
991
5.77
1019
6.79
1048
7.91
1063
8.51
1079
9.15
1112 10.52
1147 12.03
1184 13.69
1223 15.51
1264 17.50
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
990
5.06 1017
5.27 1043
5.48 1068
5.69
1019
6.02 1045
6.26 1071
6.50 1097
6.73
1047
7.06 1073
7.33 1099
7.59 1125
7.85
1075
8.20 1102
8.49 1127
8.78 1152
9.07
1090
8.82 1116
9.12 1142
9.41 1166
9.71
1105
9.46 1131
9.77 1156 10.08 1181 10.39
1137 10.85 1162 11.17 1187 11.50 1211 11.82
1171 12.37 1195 12.72 1219 13.06 1242 13.40
1208 14.05 1231 14.41 1253 14.76 1276 15.12
1246 15.88 1268 16.25 1289 16.62
—
—
1286 17.88
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Rpm
1092
1121
1149
1177
1191
1205
1234
1265
1298
—
—
—
—
0.4
Rpm Bhp
523
3.08
565
3.94
608
4.96
652
6.14
697
7.49
743
9.03
790 10.76
837 12.69
885 14.83
933 17.19
981 19.77
1030 22.59
1079 25.65
0.6
Rpm Bhp
569
3.47
606
4.36
646
5.40
687
6.60
730
7.98
774
9.54
819 11.29
864 13.24
910 15.40
957 17.77
1004 20.37
1052 23.21
1099 26.29
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
612
3.86
653
4.26
692
4.66
730
5.07
646
4.78
684
5.20
721
5.63
757
6.06
683
5.84
719
6.29
753
6.74
787
7.20
722
7.07
755
7.55
788
8.02
819
8.50
762
8.47
794
8.97
824
9.47
854
9.96
804 10.05
834 10.57
862 11.09
891 11.61
847 11.82
875 12.36
902 12.90
929 13.45
891 13.79
917 14.35
943 14.91
968 15.48
936 15.97
960 16.55
985 17.13 1009 17.71
981 18.36 1004 18.96 1028 19.56 1051 20.16
1027 20.98 1049 21.60 1071 22.22 1093 22.84
1073 23.84 1095 24.47 1116 25.10 1137 25.74
1120 26.93 1140 27.58 1161 28.23 1181 28.89
1.6
Rpm Bhp
767
5.49
791
6.49
819
7.65
850
8.97
883 10.47
918 12.13
955 13.99
993 16.04
1033 18.30
1073 20.77
1115 23.46
1157 26.39
—
—
1.8
Rpm Bhp
802
5.92
825
6.94
851
8.11
880
9.46
912 10.97
945 12.66
981 14.54
1018 16.62
1056 18.89
1096 21.38
1136 24.09
1178 27.04
—
—
2.0
Rpm Bhp
836
6.36
857
7.39
882
8.58
909
9.94
939 11.48
972 13.19
1006 15.09
1042 17.18
1079 19.48
1118 21.99
1157 24.72
1198 27.68
—
—
2.6
Rpm Bhp
933
7.73
950
8.79
970 10.02
993 11.42
1020 13.01
1049 14.78
1079 16.75
1112 18.90
1147 21.26
1182 23.84
1219 26.63
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
964
8.20
993
8.67 1022
9.16 1050
9.65
979
9.27 1008
9.75 1036 10.25 1064 10.75
998 10.51 1026 11.00 1053 11.51 1080 12.02
1020 11.93 1047 12.44 1073 12.95 1099 13.47
1046 13.53 1071 14.05 1096 14.58 1121 15.11
1073 15.32 1098 15.86 1121 16.40 1145 16.95
1103 17.30 1126 17.86 1149 18.42 1172 18.98
1135 19.48 1157 20.06 1179 20.63 1201 21.21
1168 21.86 1190 22.46 1211 23.06 1232 23.66
1203 24.45 1224 25.07 1245 25.69 1265 26.31
1240 27.26 1260 27.90 1279 28.54 1299 29.18
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1077 10.14
1090 11.26
1106 12.54
1124 14.00
1145 15.65
1168 17.50
1195 19.55
1223 21.80
1253 24.26
1285 26.93
—
—
—
—
—
—
3.8
Rpm Bhp
1104 10.64
1117 11.77
1131 13.06
1149 14.53
1169 16.19
1191 18.06
1217 20.12
1244 22.38
1274 24.86
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1129 11.15
1142 12.29
1157 13.59
1173 15.07
1192 16.74
1214 18.62
1239 20.69
1265 22.97
1294 25.46
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
553
2.22
599
2.89
647
3.68
696
4.61
721
5.12
747
5.66
798
6.86
849
8.21
901
9.71
954 11.37
1007 13.20
1060 15.19
1087 16.25
1.8
Rpm Bhp
839
3.94
868
4.76
899
5.68
932
6.72
950
7.29
968
7.89
1006
9.20
1046 10.66
1088 12.27
1131 14.03
1176 15.96
1222 18.05
1245 19.17
2.0
Rpm Bhp
872
4.17
901
5.02
930
5.96
962
7.02
979
7.60
997
8.21
1033
9.53
1072 11.00
1113 12.63
1155 14.40
1199 16.35
1243 18.46
1266 19.58
50A2,A3035 (35 TONS) (cont)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
2.2
Rpm Bhp
903
4.40
932
5.27
961
6.24
992
7.32
1008
7.90
1025
8.52
1060
9.86
1097 11.35
1137 12.98
1178 14.77
1221 16.73
1265 18.85
1287 19.98
3.6
Bhp
5.89
6.96
8.11
9.35
10.01
10.69
12.15
13.74
15.47
—
—
—
—
Rpm
1116
1145
1173
1201
1214
1228
1257
1287
—
—
—
—
—
3.8
Bhp
6.09
7.19
8.37
9.63
10.30
10.99
12.47
14.08
—
—
—
—
—
Rpm
1139
1168
1196
1224
1238
1252
1280
—
—
—
—
—
—
4.0
Bhp
6.28
7.42
8.62
9.91
10.59
11.29
12.79
—
—
—
—
—
—
50A2,A3040 (40 TONS)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
475
2.69
521
3.53
568
4.52
615
5.68
663
7.01
712
8.53
760 10.24
809 12.15
859 14.27
908 16.61
958 19.18
1007 21.98
1057 25.02
50A2,A3040 (40 TONS) (cont)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
870
6.81
889
7.85
912
9.05
938 10.43
967 11.98
998 13.72
1031 15.64
1066 17.76
1102 20.08
1140 22.61
1178 25.36
1218 28.34
—
—
2.4
Rpm Bhp
902
7.26
920
8.31
941
9.53
966 10.92
993 12.49
1023 14.25
1055 16.19
1089 18.33
1124 20.67
1161 23.22
1199 25.99
1238 28.99
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
51
Performance data (cont)
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)
50A2,A3050 (50 TONS)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
577
4.62
625
5.80
673
7.15
722
8.69
771 10.43
821 12.37
870 14.52
920 16.89
971 19.50
1021 22.35
1071 25.43
0.6
Rpm Bhp
655
5.50
697
6.73
740
8.12
784
9.70
829 11.48
875 13.46
922 15.65
969 18.06
1017 20.71
1065 23.59
1113 26.71
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
692
5.95
727
6.40
761
6.85
794
7.30
731
7.20
764
7.67
796
8.14
827
8.62
772
8.62
803
9.11
833
9.61
863 10.11
814 10.22
843 10.74
872 11.26
900 11.78
857 12.01
885 12.55
912 13.10
938 13.64
901 14.01
928 14.57
953 15.14
978 15.70
947 16.22
971 16.80
996 17.39 1020 17.97
993 18.65 1016 19.25 1039 19.86 1062 20.46
1039 21.32 1061 21.93 1083 22.55 1105 23.18
1086 24.21 1107 24.85 1128 25.49 1149 26.13
1133 27.36 1154 28.01 1174 28.66 1194 29.33
1.6
Rpm Bhp
827
7.76
858
9.10
891 10.61
927 12.31
964 14.19
1003 16.27
1043 18.56
1084 21.07
1126 23.80
1170 26.78
1213 29.99
1.8
Rpm Bhp
858
8.22
888
9.58
920 11.12
954 12.83
990 14.74
1028 16.84
1066 19.15
1107 21.68
1148 24.44
1190 27.42
1233 30.65
2.0
Rpm Bhp
889
8.69
917 10.07
947 11.62
980 13.36
1015 15.29
1052 17.41
1089 19.75
1129 22.30
1169 25.07
1210 28.08
1252 31.33
2.4
Rpm Bhp
948
9.64
973 11.05
1001 12.64
1032 14.42
1064 16.39
1098 18.56
1134 20.93
1172 23.52
1210 26.34
1250 29.38
1290 32.67
2.6
Rpm Bhp
977 10.13
1001 11.55
1027 13.16
1057 14.96
1088 16.94
1121 19.13
1156 21.53
1193 24.14
1230 26.97
1269 30.04
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1005 10.62 1032 11.12 1059 11.63 1086 12.14
1027 12.06 1054 12.57 1080 13.09 1105 13.61
1053 13.68 1078 14.21 1103 14.74 1128 15.27
1081 15.49 1105 16.03 1129 16.58 1153 17.12
1112 17.50 1135 18.06 1158 18.62 1180 19.18
1144 19.71 1166 20.29 1188 20.86 1210 21.45
1178 22.12 1199 22.72 1221 23.32 1241 23.92
1214 24.76 1234 25.37 1255 25.99 1275 26.61
1250 27.61 1270 28.25 1290 28.89
—
—
1289 30.70
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1112 12.66
1130 14.14
1152 15.81
1176 17.68
1203 19.75
1231 22.03
1262 24.52
1295 27.23
—
—
—
—
—
—
3.8
Rpm Bhp
1137 13.18
1155 14.67
1176 16.35
1199 18.23
1225 20.32
1253 22.62
1283 25.13
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1162 13.71
1179 15.21
1199 16.90
1221 18.80
1246 20.90
1274 23.21
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
509
4.71
558
6.49
584
7.53
610
8.68
637
9.95
664 11.33
692 12.84
719 14.47
748 16.24
776 18.14
804 20.18
833 22.36
862 24.68
891 27.16
920 29.79
0.6
Rpm Bhp
560
5.41
606
7.24
630
8.32
655
9.50
680 10.79
706 12.20
732 13.74
758 15.40
785 17.19
812 19.11
840 21.17
867 23.38
895 25.72
923 28.23
952 30.88
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
605
6.12
647
6.86
686
7.62
723
8.40
649
8.01
689
8.79
727
9.59
762 10.40
672
9.11
711
9.91
748 10.73
782 11.56
696 10.32
734 11.14
770 11.98
803 12.84
720 11.64
757 12.49
792 13.35
825 14.23
744 13.07
781 13.96
815 14.84
847 15.74
769 14.64
805 15.54
838 16.45
870 17.37
795 16.32
829 17.25
862 18.19
893 19.13
821 18.14
854 19.09
886 20.05
917 21.02
847 20.09
879 21.07
911 22.06
940 23.05
873 22.17
905 23.18
935 24.19
965 25.21
900 24.40
931 25.43
961 26.47
989 27.51
927 26.78
957 27.83
986 28.89 1014 29.95
954 29.30
984 30.38 1012 31.46 1040 32.55
982 31.97 1011 33.08 1038 34.19 1065 35.29
1.6
Rpm Bhp
757
9.21
795 11.24
815 12.41
836 13.71
857 15.12
878 16.65
900 18.30
923 20.08
946 22.00
969 24.04
993 26.23
1017 28.55
1041 31.02
1066 33.64
1091 36.40
1.8
Rpm Bhp
790 10.04
827 12.09
846 13.28
866 14.59
887 16.02
908 17.57
930 19.24
952 21.04
974 22.98
997 25.05
1020 27.25
1044 29.60
1068 32.09
1092 34.73
1117 37.52
2.0
Rpm Bhp
821 10.89
857 12.96
876 14.17
896 15.49
916 16.94
937 18.50
958 20.19
979 22.01
1001 23.97
1024 26.06
1046 28.28
1070 30.65
1093 33.17
1117 35.83
1141 38.64
2.6
Rpm Bhp
907 13.53
942 15.68
960 16.92
978 18.28
997 19.77
1017 21.38
1037 23.12
1057 24.99
1078 26.99
1099 29.14
1121 31.42
1143 33.85
1165 36.42
1188 39.15
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
934 14.45
960 15.38
985 16.32 1010 17.28
968 16.62
993 17.57 1018 18.54 1042 19.52
986 17.87 1011 18.83 1035 19.81 1059 20.81
1004 19.25 1029 20.22 1053 21.21 1077 22.21
1023 20.74 1047 21.73 1071 22.73 1095 23.74
1042 22.36 1066 23.36 1090 24.37 1113 25.40
1061 24.11 1085 25.13 1109 26.15 1132 27.19
1081 26.00 1105 27.03 1128 28.06 1151 29.11
1102 28.02 1126 29.06 1148 30.11 1171 31.17
1123 30.18 1146 31.24 1169 32.30 1191 33.38
1144 32.48 1167 33.55 1190 34.64
—
—
1166 34.93 1189 36.02
—
—
—
—
1188 37.52
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1033 18.24
1066 20.51
1082 21.81
1100 23.22
1117 24.76
1136 26.43
1154 28.24
1173 30.17
1193 32.25
—
—
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1057 19.22
1088 21.52
1105 22.82
1122 24.25
1140 25.80
1158 27.48
1176 29.29
1195 31.24
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1079 20.22
1111 22.53
1127 23.85
1144 25.29
1161 26.85
1179 28.54
1197 30.36
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
617
5.06
661
6.26
707
7.63
753
9.19
800 10.95
848 12.91
896 15.08
945 17.48
994 20.10
1043 22.96
1092 26.07
50A2,A3050 (50 TONS) (cont)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
919
9.17
945 10.56
975 12.13
1006 13.89
1040 15.84
1075 17.99
1112 20.34
1150 22.91
1190 25.70
1230 28.73
1271 31.99
50A2,A3060 (60 TONS)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
0.2
Rpm Bhp
450
4.02
505
5.74
533
6.75
561
7.88
590
9.12
619 10.48
648 11.96
678 13.57
707 15.30
737 17.18
767 19.20
797 21.35
827 23.66
857 26.11
888 28.72
50A2,A3060 (60 TONS) (cont)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
2.2
Rpm Bhp
851 11.75
886 13.85
905 15.07
924 16.41
944 17.86
964 19.45
985 21.15
1006 22.99
1028 24.97
1050 27.08
1072 29.32
1095 31.71
1118 34.25
1141 36.93
1165 39.76
2.4
Rpm Bhp
880 12.63
915 14.76
933 15.99
952 17.34
971 18.81
991 20.41
1011 22.13
1032 23.98
1053 25.97
1075 28.10
1097 30.37
1119 32.78
1142 35.33
1165 38.04
1188 40.89
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
52
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS
48A4,A5 020 (20 TONS)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
0.2
Rpm Bhp
339
0.71
384
1.10
433
1.61
484
2.27
511
2.66
538
3.09
593
4.07
649
5.23
0.4
Rpm Bhp
414
0.97
452
1.37
494
1.89
540
2.56
563
2.95
588
3.38
639
4.37
691
5.54
0.6
Rpm Bhp
478
1.25
510
1.66
548
2.19
590
2.87
612
3.26
634
3.70
682
4.69
731
5.87
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
534
1.54 585
1.84 631
2.14
674
2.44
563
1.96 611
2.28 656
2.60
698
2.93
597
2.51 643
2.84 686
3.18
726
3.52
636
3.19 679
3.53 719
3.88
757
4.24
656
3.59 698
3.94 737
4.29
775
4.66
678
4.03 718
4.38 756
4.74
793
5.11
722
5.03 760
5.39 796
5.76
831
6.13
769
6.21 805
6.58 839
6.95
872
7.34
1.6
Rpm Bhp
714
2.75
738
3.27
764
3.88
794
4.61
810
5.03
827
5.49
864
6.52
904
7.73
1.8
Rpm Bhp
751
3.06
775
3.60
800
4.23
829
4.98
845
5.41
861
5.87
896
6.91
934
8.13
2.0
Rpm Bhp
787
3.37
811
3.94
835
4.60
863
5.36
877
5.79
893
6.26
927
7.32
964
8.54
2.6
Rpm Bhp
883 4.30
907 4.97
931 5.70
956 6.52
970 6.97
984 7.46
1015 8.55
1048 9.80
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
912
4.62
940
4.93
967
5.25
993
5.57
937
5.31
966
5.66
993
6.01 1020
6.35
961
6.07
990
6.44 1017
6.81 1044
7.19
986
6.91 1014
7.30 1042
7.70 1068
8.10
999
7.37 1027
7.78 1054
8.18 1081
8.59
1013
7.87 1040
8.28 1067
8.69 1094
9.11
1042
8.97 1069
9.39 1096
9.82 1121 10.25
1075 10.23 1101 10.67 1126 11.11 1151 11.55
3.6
Rpm Bhp
1019 5.89
1046 6.70
1070 7.57
1094 8.50
1107 9.00
1119 9.53
1146 10.69
1176 12.00
3.8
Rpm Bhp
1043
6.21
1071
7.05
1096
7.94
1120
8.90
1132
9.41
1144
9.95
1171 11.12
1200 12.45
4.0
Rpm Bhp
1067
6.53
1095
7.40
1121
8.32
1145
9.30
1157
9.82
1169 10.37
1195 11.56
—
—
0.6
Rpm Bhp
514
1.68
553
2.22
596
2.91
642
3.75
690
4.76
740
5.95
792
7.33
845
8.90
899 10.68
954 12.68
1010 14.90
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
566
1.98
614
2.30
659
2.62
701
2.95
602
2.54
647
2.87
689
3.21
730
3.56
641
3.24
684
3.58
724
3.93
762
4.29
684
4.09
724
4.44
762
4.80
798
5.17
730
5.10
768
5.46
803
5.83
838
6.21
777
6.30
813
6.67
847
7.04
880
7.43
827
7.68
860
8.06
893
8.44
924
8.83
878
9.27
909
9.64
940 10.03
970 10.43
930 11.05
960 11.44
989 11.83 1017 12.24
983 13.06 1012 13.44 1039 13.85 1066 14.26
1037 15.28 1064 15.68 1091 16.08 1116 16.50
1.6
Rpm Bhp
740
3.29
768
3.91
798
4.66
833
5.55
871
6.60
911
7.83
954
9.24
999 10.84
1045 12.65
1093 14.68
1142 16.93
1.8
Rpm Bhp
777
3.62
804
4.27
833
5.03
866
5.93
903
7.00
942
8.23
983
9.65
1026 11.26
1072 13.08
1118 15.11
1166 17.36
2.0
Rpm Bhp
813
3.96
838
4.63
867
5.41
898
6.32
933
7.40
971
8.64
1011 10.07
1054 11.69
1098 13.51
1143 15.54
1190 17.80
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
939
5.34
968
5.68
995
6.03 1022
6.38
964
6.10
992
6.48 1020
6.85 1047
7.22
989
6.96 1018
7.36 1045
7.75 1072
8.15
1017
7.94 1045
8.35 1072
8.76 1098
9.18
1048
9.06 1075
9.48 1101
9.91 1126 10.34
1081 10.34 1107 10.77 1133 11.22 1157 11.66
1117 11.80 1142 12.24 1167 12.69 1191 13.15
1156 13.45 1180 13.90
—
—
—
—
1196 15.30
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1048
6.73
1073
7.60
1098
8.55
1124
9.60
1151 10.78
1182 12.11
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1073
7.08
1098
7.98
1123
8.95
1148 10.02
1176 11.21
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1097
7.43
1123
8.36
1148
9.35
1173 10.44
1200 11.65
—
—
—
—
—
—
—
—
—
—
—
—
48A4,A5 020 (20 TONS) (cont)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
2.2
Rpm Bhp
820
3.68
844
4.28
869
4.96
895
5.74
909
6.18
925
6.66
957
7.72
993
8.96
2.4
Rpm Bhp
852
3.99
877
4.63
901
5.33
926
6.13
940
6.57
955
7.06
986
8.13
1021
9.38
48A4,A5 025-030 (25 THRU 30 TONS)
Airflow
(Cfm)
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
0.2
Rpm Bhp
389
1.11
439
1.64
492
2.31
546
3.14
602
4.13
659
5.31
717
6.67
775
8.23
834
9.99
893 11.97
953 14.17
0.4
Rpm Bhp
456
1.38
499
1.92
546
2.60
596
3.43
647
4.43
701
5.62
755
6.99
811
8.56
867 10.33
924 12.32
982 14.53
48A4,A5 025-030 (25 THRU 30 TONS) (cont)
Airflow
(Cfm)
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
2.2
Rpm Bhp
846
4.31
872
5.00
899
5.79
930
6.72
963
7.80
1000
9.06
1039 10.49
1080 12.12
1123 13.95
1168 15.99
—
—
2.4
Rpm Bhp
879
4.65
903
5.36
930
6.18
960
7.12
992
8.22
1028
9.48
1066 10.92
1106 12.56
1148 14.39
1192 16.44
—
—
2.6
Rpm Bhp
909
4.99
934
5.73
960
6.57
989
7.53
1020
8.63
1055
9.91
1092 11.36
1131 13.00
1172 14.84
—
—
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
53
Performance data (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
48A4,A5 035 (35 TONS)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
0.2
Rpm Bhp
553
2.59
612
3.45
672
4.47
733
5.67
763
6.33
794
7.04
855
8.60
917 10.36
980 12.32
1042 14.49
1105 16.88
1168 19.49
1200 20.88
0.6
Rpm Bhp
648
3.26
698
4.17
750
5.24
805
6.48
832
7.17
861
7.90
918
9.51
976 11.31
1035 13.31
1094 15.52
1154 17.96
1214 20.61
1245 22.03
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
691
3.61
732
3.95
770
4.29
807
4.63
738
4.53
776
4.90
812
5.27
847
5.63
787
5.62
823
6.01
857
6.39
890
6.78
839
6.88
872
7.28
904
7.69
935
8.10
865
7.58
897
7.99
929
8.40
959
8.82
892
8.32
923
8.74
954
9.16
983
9.59
948
9.95
977 10.39 1005 10.83 1033 11.27
1004 11.77 1031 12.23 1058 12.69 1084 13.14
1061 13.79 1087 14.27 1112 14.75 1137 15.22
1119 16.03 1143 16.53 1167 17.02 1191 17.51
1178 18.48 1201 19.00 1224 19.51 1246 20.02
1237 21.16 1259 21.69 1281 22.23
—
—
1267 22.58 1288 23.13
—
—
—
—
1.6
Rpm Bhp
842
4.96
881
6.00
922
7.17
966
8.51
989
9.24
1012 10.01
1060 11.71
1110 13.60
1161 15.70
1214 18.01
1268 20.53
—
—
—
—
2.4
Rpm Bhp
967
6.26
1003
7.43
1041
8.72
1080 10.15
1100 10.92
1120 11.73
1163 13.50
1208 15.45
1255 17.61
—
—
—
—
—
—
—
—
2.6
Rpm Bhp
995
6.57
1031
7.77
1068
9.10
1106 10.55
1126 11.34
1146 12.16
1188 13.95
1232 15.92
1278 18.09
—
—
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1022
6.87 1048
7.18 1073
7.48 1098
7.78
1058
8.12 1084
8.46 1109
8.79 1134
9.13
1094
9.47 1120
9.85 1145 10.22 1169 10.58
1132 10.96 1157 11.36 1182 11.76 1206 12.16
1151 11.75 1176 12.17 1201 12.59 1224 13.00
1171 12.59 1196 13.02 1220 13.45 1243 13.87
1212 14.40 1236 14.84 1259 15.30 1282 15.74
1255 16.39 1278 16.85
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Rpm
1122
1158
1193
1229
1248
1266
—
—
—
—
—
—
—
0.4
Rpm Bhp
573
3.50
621
4.51
671
5.70
723
7.07
775
8.65
827 10.45
881 12.47
935 14.72
989 17.23
1044 19.98
1099 23.01
1155 26.30
—
—
0.6
Rpm Bhp
617
3.91
662
4.95
709
6.16
757
7.56
807
9.17
857 10.98
909 13.03
961 15.31
1014 17.83
1068 20.60
1122 23.64
1176 26.96
—
—
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
660
4.33
700
4.75
740
5.18
778
5.62
701
5.39
738
5.83
775
6.28
810
6.74
744
6.62
779
7.09
813
7.57
846
8.05
790
8.05
823
8.54
854
9.04
885
9.54
838
9.68
868 10.20
898 10.72
927 11.24
887 11.52
915 12.07
943 12.61
970 13.15
936 13.59
963 14.15
990 14.72 1016 15.29
987 15.89 1013 16.48 1038 17.06 1062 17.65
1039 18.43 1063 19.04 1086 19.65 1110 20.26
1091 21.23 1114 21.86 1136 22.49 1158 23.12
1144 24.29 1165 24.94 1187 25.59 1208 26.25
1197 27.62 1217 28.29 1238 28.96
—
—
—
—
—
—
—
—
—
—
1.6
Rpm Bhp
814
6.07
845
7.21
879
8.53
916 10.05
955 11.77
997 13.70
1041 15.86
1086 18.25
1133 20.88
1180 23.76
1229 26.90
—
—
—
—
1.8
Rpm Bhp
850
6.53
878
7.69
910
9.03
945 10.56
983 12.30
1024 14.25
1066 16.43
1110 18.84
1156 21.49
1202 24.39
1250 27.56
—
—
—
—
2.0
Rpm Bhp
884
7.00
911
8.17
941
9.53
974 11.08
1011 12.84
1050 14.81
1091 17.01
1134 19.44
1178 22.11
1223 25.03
1270 28.22
—
—
—
—
2.6
Rpm Bhp
980
8.44
1003
9.66
1030 11.06
1059 12.67
1091 14.47
1126 16.50
1163 18.75
1202 21.24
1243 23.97
1286 26.96
—
—
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1010
8.94 1039
9.43 1067
9.93 1094 10.44
1033 10.17 1061 10.69 1089 11.21 1116 11.73
1058 11.59 1086 12.12 1113 12.66 1139 13.20
1086 13.21 1112 13.75 1139 14.31 1164 14.86
1117 15.03 1142 15.59 1167 16.16 1192 16.73
1150 17.07 1175 17.65 1199 18.23 1222 18.82
1186 19.34 1210 19.94 1232 20.53 1255 21.14
1225 21.85 1247 22.46 1269 23.07 1290 23.69
1265 24.60 1286 25.23
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1121 10.95
1142 12.26
1165 13.75
1189 15.43
1216 17.31
1246 19.41
1277 21.74
—
—
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1147 11.46
1168 12.80
1190 14.30
1214 15.99
1240 17.89
1269 20.00
1300 22.35
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1172 11.98
1193 13.33
1215 14.86
1238 16.56
1264 18.48
1291 20.61
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
602
2.92
656
3.81
712
4.86
769
6.08
798
6.75
828
7.47
887
9.06
947 10.84
1008 12.82
1069 15.01
1130 17.42
1191 20.06
1222 21.46
1.8
Rpm Bhp
875
5.29
913
6.36
953
7.56
995
8.92
1017
9.66
1040 10.44
1087 12.16
1135 14.06
1185 16.17
1237 18.50
1290 21.04
—
—
—
—
2.0
Rpm Bhp
907
5.62
944
6.72
983
7.95
1024
9.33
1046 10.08
1067 10.87
1113 12.60
1160 14.52
1209 16.65
1260 18.99
—
—
—
—
—
—
48A4,A5 035 (35 TONS) (cont)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
2.2
Rpm Bhp
937
5.94
974
7.08
1012
8.33
1052
9.74
1073 10.50
1094 11.30
1138 13.05
1184 14.99
1232 17.13
1282 19.48
—
—
—
—
—
—
3.6
Bhp
8.07
9.46
10.95
12.55
13.41
14.30
—
—
—
—
—
—
—
Rpm
1145
1181
1216
1252
1271
1289
—
—
—
—
—
—
—
3.8
Bhp
8.36
9.78
11.31
12.95
13.82
14.72
—
—
—
—
—
—
—
Rpm
1168
1204
1239
1275
1293
—
—
—
—
—
—
—
—
4.0
Bhp
8.66
10.11
11.66
13.34
14.22
—
—
—
—
—
—
—
—
48A4,A5040 (40 TONS)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
526
3.10
579
4.08
633
5.24
687
6.59
742
8.15
797
9.92
852 11.92
908 14.15
964 16.63
1021 19.37
1077 22.37
1133 25.65
1190 29.21
48A4,A5040 (40 TONS) (cont)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
917
7.48
942
8.66
971 10.03
1003 11.60
1038 13.38
1075 15.37
1115 17.59
1157 20.04
1200 22.73
1245 25.67
1290 28.88
—
—
—
—
2.4
Rpm Bhp
949
7.96
973
9.16
1001 10.55
1031 12.13
1065 13.92
1101 15.93
1139 18.17
1180 20.64
1222 23.35
1266 26.32
—
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
54
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
48A4,A5050 (50 TONS)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
642
5.35
696
6.72
751
8.29
807 10.09
863 12.12
919 14.38
975 16.90
1032 19.67
1089 22.71
1146 26.04
1203 29.65
0.6
Rpm Bhp
717
6.27
766
7.69
816
9.32
867 11.16
919 13.23
972 15.54
1025 18.09
1079 20.91
1134 23.99
1188 27.35
1244 31.00
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
753
6.73
787
7.20
821
7.68
854
8.16
799
8.18
831
8.67
863
9.17
893
9.68
847
9.83
877 10.35
906 10.87
935 11.40
896 11.70
924 12.24
952 12.78
979 13.33
946 13.79
973 14.36
999 14.92 1025 15.49
997 16.12 1023 16.71 1047 17.30 1072 17.89
1049 18.70 1073 19.31 1097 19.92 1120 20.53
1102 21.54 1125 22.17 1147 22.80 1169 23.44
1155 24.64 1177 25.29 1198 25.95 1219 26.60
1209 28.02 1230 28.69 1250 29.37 1270 30.04
1263 31.69 1283 32.38
—
—
—
—
1.6
Rpm Bhp
886
8.65
923 10.18
964 11.92
1006 13.88
1050 16.06
1096 18.48
1143 21.15
1191 24.07
1240 27.26
1290 30.72
—
—
1.8
Rpm Bhp
917
9.14
953 10.70
991 12.46
1032 14.43
1075 16.64
1120 19.08
1165 21.76
1213 24.71
1261 27.92
—
—
—
—
2.0
Rpm Bhp
948
9.65
982 11.21
1019 12.99
1058 14.99
1100 17.21
1143 19.68
1188 22.38
1234 25.35
1281 28.58
—
—
—
—
2.4
Rpm Bhp
1008 10.67
1038 12.27
1072 14.08
1109 16.11
1148 18.38
1189 20.88
1231 23.62
1276 26.63
—
—
—
—
—
—
2.6
Rpm Bhp
1036 11.19
1066 12.81
1098 14.63
1134 16.68
1171 18.97
1211 21.49
1253 24.25
1296 27.27
—
—
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1064 11.72 1092 12.25 1119 12.79 1145 13.33
1093 13.35 1119 13.90 1145 14.45 1171 15.01
1124 15.19 1149 15.76 1174 16.32 1199 16.90
1158 17.26 1182 17.84 1206 18.42 1230 19.01
1195 19.55 1218 20.15 1241 20.75 1263 21.35
1234 22.09 1256 22.71 1277 23.32 1299 23.94
1274 24.88 1295 25.51
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1171 13.88
1196 15.57
1223 17.48
1253 19.60
1285 21.96
—
—
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1196 14.43
1220 16.14
1247 18.06
1276 20.20
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1221 14.99
1245 16.72
1270 18.65
1299 20.80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
569
5.54
632
7.69
664
8.96
697 10.36
730 11.90
764 13.58
798 15.41
833 17.39
867 19.54
902 21.84
937 24.31
973 26.95
1008 29.77
1044 32.76
1080 35.94
0.6
Rpm Bhp
617
6.30
676
8.50
706
9.79
737 11.22
769 12.79
801 14.51
834 16.37
867 18.39
901 20.56
934 22.90
968 25.40
1003 28.08
1037 30.93
1072 33.96
1107 37.18
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
660
7.10
701
7.93
739
8.79
774
9.68
716
9.33
754 10.20
790 11.10
824 12.02
745 10.65
782 11.53
817 12.44
850 13.38
775 12.10
811 13.00
845 13.93
877 14.88
806 13.69
840 14.61
873 15.56
904 16.53
837 15.43
870 16.38
902 17.34
933 18.32
868 17.32
900 18.29
932 19.27
961 20.27
900 19.37
931 20.36
962 21.36
991 22.38
932 21.57
963 22.59
992 23.61 1020 24.65
965 23.94
995 24.98 1023 26.03 1051 27.09
998 26.48 1027 27.55 1055 28.62 1081 29.70
1032 29.18 1059 30.28 1086 31.38 1113 32.48
1065 32.07 1092 33.20 1119 34.32 1144 35.44
1099 35.13 1125 36.29 1151 37.44 1176 38.59
1133 38.38 1159 39.57 1184 40.75
—
—
1.6
Rpm Bhp
808 10.59
857 12.97
882 14.35
908 15.86
935 17.52
962 19.33
990 21.29
1019 23.42
1048 25.71
1077 28.17
1107 30.79
1138 33.59
1169 36.58
—
—
—
—
1.8
Rpm Bhp
841 11.52
888 13.94
912 15.33
938 16.86
964 18.54
990 20.36
1018 22.34
1046 24.48
1074 26.78
1103 29.26
1133 31.90
1163 34.72
1193 37.72
—
—
—
—
2.0
Rpm Bhp
872 12.46
917 14.92
941 16.34
966 17.88
992 19.58
1018 21.41
1045 23.40
1072 25.56
1100 27.87
1129 30.36
1157 33.02
1187 35.86
—
—
—
—
—
—
2.6
Rpm Bhp
958 15.36
1001 17.97
1024 19.45
1047 21.05
1071 22.79
1096 24.67
1121 26.71
1147 28.90
1173 31.26
—
—
—
—
—
—
—
—
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
985 16.34 1011 17.33 1036 18.33 1061 19.33
1027 19.01 1052 20.06 1077 21.12 1101 22.18
1049 20.51 1074 21.58 1099 22.67 1122 23.76
1072 22.14 1097 23.23 1121 24.34 1144 25.45
1096 23.89 1120 25.01 1144 26.13 1167 27.27
1120 25.79 1144 26.93 1167 28.07 1190 29.23
1145 27.84 1169 28.99 1192 30.16
—
—
1171 30.05 1194 31.21
—
—
—
—
1197 32.42
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1085 20.34
1125 23.25
1146 24.86
1167 26.58
1190 28.42
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1108 21.35
1148 24.33
1168 25.97
1190 27.71
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1131 22.36
1170 25.42
1191 27.08
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
680
5.80
732
7.20
784
8.80
837 10.62
891 12.67
946 14.96
1000 17.49
1056 20.29
1111 23.35
1167 26.69
1224 30.32
48A4,A5050 (50 TONS) (cont)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
978 10.15
1010 11.74
1046 13.53
1084 15.55
1124 17.79
1166 20.27
1210 23.00
1255 25.99
—
—
—
—
—
—
48A4,A5060 (60 TONS)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
0.2
Rpm Bhp
516
4.81
584
6.90
619
8.13
654
9.49
689 10.99
725 12.64
760 14.43
796 16.37
832 18.47
869 20.74
905 23.17
942 25.78
978 28.56
1015 31.52
1052 34.66
48A4,A5060 (60 TONS) (cont)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
2.2
Rpm Bhp
901 13.42
946 15.92
970 17.36
994 18.93
1019 20.63
1045 22.48
1071 24.49
1098 26.66
1125 28.99
1153 31.49
1181 34.16
—
—
—
—
—
—
—
—
2.4
Rpm Bhp
930 14.38
974 16.94
997 18.40
1021 19.98
1045 21.70
1070 23.57
1096 25.59
1123 27.77
1150 30.12
1177 32.63
—
—
—
—
—
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
55
Performance data (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
50A4,A5 020 (20 TONS)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
0.2
Rpm Bhp
322
0.62
361
0.95
405
1.41
451
2.00
475
2.34
500
2.72
550
3.60
601
4.63
0.4
Rpm Bhp
399
0.82
431
1.17
467
1.64
508
2.22
529
2.57
551
2.95
596
3.83
644
4.86
0.6
Rpm Bhp
464
1.04
491
1.41
524
1.88
559
2.48
579
2.82
598
3.21
640
4.09
684
5.12
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
521
1.26
572
1.48
619
1.71 662
1.93
545
1.65
594
1.89
640
2.14 682
2.39
574
2.14
621
2.40
664
2.67 705
2.93
607
2.75
651
3.02
693
3.30 732
3.58
625
3.10
668
3.38
708
3.66 746
3.96
643
3.48
685
3.77
724
4.06 762
4.36
682
4.36
721
4.66
759
4.96 795
5.27
723
5.40
760
5.70
796
6.01 830
6.33
1.6
Rpm Bhp
702
2.16
722
2.64
744
3.20
769
3.87
783
4.25
797
4.66
829
5.58
863
6.65
1.8
Rpm Bhp
739
2.38
759
2.89
780
3.47
804
4.16
818
4.55
832
4.96
862
5.90
894
6.98
2.0
Rpm Bhp
774
2.61
795
3.14
816
3.75
839
4.45
851
4.84
864
5.27
893
6.22
925
7.31
2.6
Rpm Bhp
870
3.29
892
3.89
912
4.57
933
5.33
945
5.75
957
6.20
983
7.19
1011
8.31
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
900
3.52
928
3.75
955
3.98
981
4.21
922
4.14
950
4.40
978
4.65 1005
4.90
942
4.84
971
5.12
999
5.39 1026
5.67
963
5.62
991
5.92 1019
6.21 1046
6.51
974
6.05 1002
6.35 1030
6.66 1057
6.96
985
6.51 1014
6.82 1041
7.13 1067
7.45
1011
7.51 1038
7.84 1064
8.17 1090
8.50
1038
8.65 1065
8.99 1091
9.34 1116
9.68
3.6
Rpm Bhp
1007
4.44
1031
5.16
1052
5.94
1072
6.80
1083
7.27
1093
7.76
1116
8.83
1141 10.02
3.8
Rpm Bhp
1031
4.67
1056
5.41
1077
6.22
1098
7.10
1108
7.58
1118
8.08
1141
9.16
1165 10.37
4.0
Rpm Bhp
1055
4.91
1080
5.67
1102
6.49
1123
7.40
1133
7.88
1143
8.39
1165
9.49
1189 10.72
0.6
Rpm Bhp
495
1.42
529
1.91
566
2.51
606
3.25
649
4.14
694
5.19
740
6.41
788
7.80
838
9.38
888 11.15
939 13.12
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
548
1.67
597
1.91
642
2.16
685
2.41
579
2.16
625
2.43
668
2.69
709
2.96
613
2.78
657
3.06
698
3.34
737
3.62
650
3.53
691
3.82
731
4.11
768
4.41
690
4.42
729
4.72
766
5.02
802
5.33
732
5.47
769
5.77
804
6.09
838
6.40
776
6.69
811
7.00
844
7.31
876
7.64
822
8.09
854
8.39
886
8.71
916
9.04
869
9.67
899
9.98
929 10.30
958 10.63
917 11.44 946 11.75
974 12.07 1002 12.41
967 13.41 994 13.72 1021 14.05 1047 14.38
1.6
Rpm Bhp
724
2.65
747
3.23
774
3.91
803
4.71
835
5.64
870
6.73
907
7.97
946
9.38
987 10.97
1029 12.75
1073 14.73
1.8
Rpm Bhp
762
2.90
784
3.50
809
4.20
837
5.01
868
5.96
902
7.06
937
8.31
975
9.72
1014 11.32
1055 13.10
1098 15.08
2.0
Rpm Bhp
797
3.16
819
3.77
843
4.49
870
5.32
900
6.28
932
7.39
967
8.65
1003 10.07
1041 11.68
1081 13.46
1123 15.45
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
924
4.16
952
4.41
980
4.67 1007
4.92
945
4.87
974
5.14 1001
5.42 1028
5.69
967
5.66
995
5.95 1023
6.25 1049
6.55
990
6.56 1018
6.87 1045
7.18 1072
7.50
1016
7.58 1043
7.91 1070
8.23 1096
8.57
1045
8.74 1071
9.08 1097
9.42 1122
9.76
1075 10.04 1101 10.39 1126 10.75 1151 11.11
1108 11.51 1133 11.87 1157 12.24 1181 12.61
1143 13.14 1167 13.52 1191 13.89
—
—
1179 14.96
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1032
5.17
1054
5.97
1076
6.84
1097
7.81
1121
8.90
1147 10.11
1175 11.47
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1057
5.43
1080
6.24
1101
7.14
1123
8.13
1146
9.23
1171 10.46
1198 11.82
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1082
5.68
1105
6.52
1126
7.44
1147
8.44
1170
9.56
1194 10.80
—
—
—
—
—
—
—
—
—
—
50A4,A5 020 (20 TONS) (cont)
Airflow
(Cfm)
4,000
5,000
6,000
7,000
7,500
8,000
9,000
10,000
2.2
Rpm Bhp
808
2.84
829
3.39
849
4.02
871
4.74
883
5.14
896
5.58
924
6.54
954
7.64
2.4
Rpm Bhp
840
3.06
861
3.64
881
4.29
903
5.03
915
5.44
927
5.89
954
6.86
983
7.98
50A4,A5 025-030 (25 THRU 30 TONS)
Airflow
(Cfm)
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
0.2
Rpm Bhp
366
0.97
411
1.43
459
2.02
508
2.76
560
3.64
612
4.68
665
5.89
718
7.28
772
8.85
826 10.61
881 12.57
0.4
Rpm Bhp
435
1.19
473
1.66
515
2.25
559
2.99
605
3.88
654
4.92
703
6.14
754
7.53
806
9.11
858 10.87
910 12.84
50A4,A5 025-030 (25 THRU 30 TONS) (cont)
Airflow
(Cfm)
2.2
Rpm Bhp
831
3.41
852
4.05
875
4.78
901
5.63
930
6.60
961
7.72
995
8.99
1030 10.43
1068 12.04
1107 13.83
1147 15.82
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
LEGEND
Bhp — Brake Horsepower
2.4
Rpm Bhp
863
3.66
884
4.32
907
5.07
932
5.94
960
6.93
990
8.06
1022
9.34
1057 10.78
1093 12.40
1131 14.20
1171 16.19
2.6
Rpm Bhp
894
3.91
915
4.59
937
5.37
961
6.25
988
7.25
1018
8.40
1049
9.69
1083 11.14
1119 12.77
1156 14.58
1194 16.58
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
56
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
50A4,A5035 (35 TONS)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
0.2
Rpm Bhp
522
2.06
576
2.75
630
3.57
686
4.52
714
5.05
742
5.62
799
6.88
856
8.29
914
9.87
971 11.62
1029 13.55
1088 15.66
1117 16.79
0.6
Rpm Bhp
620
2.57
665
3.30
712
4.16
761
5.15
786
5.70
811
6.28
863
7.57
916
9.01
969 10.61
1024 12.39
1079 14.34
1134 16.47
1162 17.61
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
664
2.82
705
3.06
744
3.30
780
3.54
706
3.57
745
3.84
782
4.10
817
4.36
750
4.45
787
4.74
822
5.02
855
5.30
797
5.46
831
5.77
864
6.07
896
6.37
821
6.02
854
6.34
886
6.65
917
6.96
845
6.61
877
6.94
909
7.26
939
7.58
894
7.91
925
8.25
954
8.60
983
8.93
945
9.37
974
9.72 1002 10.08 1029 10.44
997 10.98 1024 11.36 1050 11.73 1076 12.10
1050 12.77 1075 13.16 1100 13.54 1125 13.93
1103 14.74 1127 15.13 1151 15.53 1174 15.93
1157 16.88 1180 17.29 1203 17.70 1225 18.11
1184 18.02 1207 18.44 1229 18.86 1250 19.27
1.6
Rpm Bhp
815
3.78
850
4.62
888
5.58
927
6.67
947
7.27
968
7.90
1011
9.27
1056 10.79
1102 12.47
1149 14.31
1198 16.33
1247 18.53
1272 19.69
2.4
Rpm Bhp
942
4.68
973
5.62
1006
6.67
1041
7.84
1059
8.47
1078
9.14
1117 10.58
1157 12.17
1199 13.92
1243 15.83
1287 17.91
—
—
—
—
2.6
Rpm Bhp
970
4.90
1001
5.86
1034
6.93
1068
8.12
1086
8.77
1104
9.44
1142 10.90
1181 12.51
1222 14.28
1265 16.20
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
998
5.12 1025
5.33 1051
5.54 1076
5.75
1029
6.11 1055
6.35 1081
6.58 1106
6.82
1060
7.20 1086
7.46 1112
7.72 1136
7.98
1094
8.41 1119
8.69 1144
8.97 1168
9.25
1111
9.06 1136
9.35 1161
9.64 1184
9.93
1129
9.75 1154 10.05 1178 10.35 1201 10.64
1166 11.23 1190 11.54 1213 11.86 1236 12.18
1205 12.85 1228 13.19 1251 13.52 1273 13.86
1245 14.63 1268 14.99 1290 15.34
—
—
1287 16.58
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Rpm
1101
1130
1160
1192
1208
1224
1259
1295
—
—
—
—
—
0.4
Rpm Bhp
546
3.27
591
4.20
637
5.30
685
6.57
734
8.03
783
9.69
833 11.56
884 13.64
935 15.95
986 18.50
1038 21.29
1090 24.33
1142 27.64
0.6
Rpm Bhp
590
3.66
631
4.62
675
5.74
720
7.04
766
8.52
813 10.21
861 12.09
910 14.20
960 16.53
1010 19.09
1060 21.90
1111 24.96
1162 28.29
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
632
4.06
672
4.46
711
4.87
748
5.28
670
5.04
708
5.47
744
5.90
778
6.33
711
6.19
746
6.64
779
7.09
812
7.55
753
7.51
786
7.99
817
8.47
848
8.94
797
9.02
828
9.52
857 10.02
886 10.52
842 10.72
871 11.25
899 11.77
927 12.30
889 12.63
916 13.18
942 13.73
968 14.27
936 14.76
962 15.32
987 15.89 1011 16.46
984 17.11 1008 17.69 1032 18.28 1056 18.87
1033 19.69 1056 20.30 1078 20.91 1101 21.52
1082 22.52 1104 23.15 1126 23.77 1147 24.41
1132 25.60 1153 26.25 1173 26.89 1194 27.54
1182 28.95
—
—
—
—
—
—
1.6
Rpm Bhp
784
5.70
812
6.77
844
8.01
878
9.43
915 11.03
953 12.82
994 14.82
1036 17.03
1079 19.47
1123 22.13
1168 25.04
1214 28.19
—
—
1.8
Rpm Bhp
819
6.14
845
7.22
875
8.47
907
9.91
943 11.53
980 13.35
1019 15.37
1060 17.61
1101 20.06
1145 22.75
1189 25.67
1234 28.85
—
—
2.0
Rpm Bhp
853
6.58
877
7.67
905
8.94
936 10.40
970 12.04
1006 13.88
1044 15.92
1083 18.18
1124 20.66
1166 23.36
1209 26.31
—
—
—
—
2.6
Rpm Bhp
948
7.95
968
9.08
992 10.39
1019 11.89
1048 13.59
1081 15.48
1115 17.59
1151 19.91
1189 22.45
1229 25.21
1269 28.22
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
978
8.42 1007
8.90 1036
9.39 1063
9.88
997
9.56 1026 10.05 1053 10.55 1080 11.05
1020 10.89 1047 11.39 1073 11.89 1100 12.41
1045 12.40 1071 12.91 1097 13.43 1122 13.96
1074 14.11 1099 14.64 1123 15.17 1147 15.71
1105 16.03 1129 16.57 1152 17.12 1175 17.67
1138 18.15 1161 18.71 1184 19.27 1206 19.84
1174 20.48 1196 21.07 1217 21.65 1239 22.23
1211 23.04 1232 23.64 1253 24.25 1273 24.85
1249 25.83 1270 26.46 1289 27.07
—
—
1289 28.86
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1090 10.38
1107 11.56
1125 12.93
1147 14.49
1171 16.25
1198 18.22
1228 20.41
1260 22.82
1293 25.45
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1116 10.88
1133 12.08
1151 13.45
1171 15.02
1195 16.80
1221 18.78
1250 20.99
1280 23.41
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1142 11.39
1158 12.60
1175 13.99
1195 15.56
1218 17.35
1243 19.35
1271 21.56
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
573
2.32
622
3.03
672
3.86
724
4.84
750
5.38
777
5.95
831
7.22
886
8.65
942 10.24
998 12.00
1054 13.94
1111 16.07
1140 17.20
1.8
Rpm Bhp
849
4.01
883
4.87
919
5.86
957
6.97
977
7.57
997
8.21
1039
9.60
1082 11.14
1127 12.84
1173 14.70
1220 16.73
1269 18.93
1293 20.11
2.0
Rpm Bhp
881
4.24
914
5.12
949
6.13
986
7.26
1005
7.87
1025
8.52
1065
9.93
1108 11.49
1152 13.20
1197 15.08
1243 17.12
1290 19.34
—
—
50A4,A5035 (35 TONS) (cont)
AIRFLOW
(Cfm)
7,000
8,000
9,000
10,000
10,500
11,000
12,000
13,000
14,000
15,000
16,000
17,000
17,500
2.2
Rpm Bhp
912
4.46
944
5.37
978
6.40
1014
7.55
1033
8.17
1052
8.83
1091 10.26
1133 11.83
1176 13.56
1220 15.45
1265 17.52
—
—
—
—
3.6
Bhp
5.96
7.05
8.23
9.52
10.22
10.94
12.49
14.19
—
—
—
—
—
Rpm
1124
1154
1184
1215
1231
1247
1281
—
—
—
—
—
—
3.8
Bhp
6.16
7.28
8.49
9.80
10.50
11.23
12.80
—
—
—
—
—
—
Rpm
1148
1177
1207
1238
1253
1269
—
—
—
—
—
—
—
4.0
Bhp
6.36
7.51
8.74
10.07
10.79
11.53
—
—
—
—
—
—
—
50A4,A5040 (40 TONS)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
499
2.88
548
3.78
599
4.86
649
6.11
701
7.54
753
9.18
805 11.03
857 13.09
910 15.38
963 17.91
1016 20.68
1069 23.71
1122 26.99
50A4,A5040 (40 TONS) (cont)
Airflow
(Cfm)
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
885
7.03
908
8.13
934
9.42
964 10.89
996 12.55
1031 14.41
1068 16.48
1106 18.75
1146 21.25
1187 23.98
1230 26.95
—
—
—
—
2.4
Rpm Bhp
917
7.48
939
8.60
963
9.90
992 11.39
1023 13.07
1056 14.95
1092 17.03
1129 19.33
1168 21.85
1208 24.60
1250 27.58
—
—
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
57
Performance data (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
50A4,A5050 (50 TONS)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
0.2
Rpm Bhp
608
4.96
659
6.23
710
7.68
763
9.35
815 11.22
868 13.31
921 15.64
974 18.20
1028 21.01
1081 24.08
1135 27.42
0.6
Rpm Bhp
683
5.85
728
7.16
775
8.67
823 10.37
871 12.29
921 14.42
971 16.78
1021 19.39
1072 22.24
1124 25.35
1175 28.72
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
719
6.30
754
6.75
787
7.20
819
7.66
762
7.64
794
8.11
825
8.59
856
9.07
806
9.17
836
9.67
866 10.17
895 10.67
852 10.89
880 11.42
908 11.94
935 12.47
899 12.83
925 13.38
952 13.92
978 14.47
946 14.98
972 15.55
997 16.12 1021 16.69
995 17.37 1019 17.96 1043 18.54 1066 19.14
1044 19.99 1067 20.60 1089 21.21 1112 21.82
1094 22.86 1116 23.49 1137 24.12 1158 24.75
1145 25.99 1165 26.63 1185 27.28 1206 27.93
1195 29.38 1215 30.04 1234 30.71 1254 31.38
1.6
Rpm Bhp
851
8.12
886
9.55
923 11.17
962 12.99
1003 15.02
1045 17.26
1089 19.73
1134 22.43
1179 25.38
1226 28.58
1273 32.05
1.8
Rpm Bhp
882
8.58
915 10.04
950 11.68
988 13.52
1028 15.57
1069 17.83
1111 20.32
1155 23.05
1200 26.02
1245 29.24
1292 32.72
2.0
Rpm Bhp
912
9.06
943 10.53
978 12.19
1014 14.05
1052 16.12
1092 18.41
1134 20.92
1176 23.66
1220 26.65
1265 29.90
—
—
2.4
Rpm Bhp
970 10.02
999 11.52
1030 13.22
1064 15.12
1100 17.23
1138 19.56
1178 22.11
1218 24.90
1260 27.93
—
—
—
—
2.6
Rpm Bhp
998 10.51
1026 12.02
1056 13.74
1088 15.66
1123 17.79
1160 20.14
1199 22.71
1239 25.52
1280 28.57
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
1026 11.00 1053 11.51 1080 12.01 1106 12.53
1052 12.53 1078 13.05 1103 13.57 1128 14.09
1081 14.26 1106 14.79 1130 15.33 1154 15.86
1113 16.20 1136 16.74 1160 17.29 1183 17.85
1147 18.35 1169 18.91 1192 19.48 1214 20.04
1182 20.72 1204 21.30 1226 21.88 1247 22.47
1220 23.31 1241 23.91 1262 24.51 1282 25.12
1259 26.14 1279 26.76 1299 27.38
—
—
1300 29.21
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1131 13.05
1153 14.63
1178 16.41
1206 18.40
1236 20.62
1268 23.05
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1156 13.58
1177 15.16
1201 16.96
1228 18.96
1257 21.19
1289 23.65
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1181 14.11
1201 15.71
1224 17.51
1250 19.53
1279 21.77
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
543
5.17
602
7.17
632
8.34
663
9.64
694 11.07
725 12.63
757 14.33
789 16.18
822 18.17
855 20.32
888 22.62
921 25.08
954 27.71
987 30.51
1021 33.49
0.6
Rpm Bhp
591
5.88
645
7.94
674
9.14
703 10.46
733 11.92
763 13.51
793 15.23
824 17.10
855 19.12
887 21.29
919 23.62
951 26.11
983 28.76
1016 31.59
1048 34.58
Available External Static Pressure (in. wg)
0.8
1.0
1.2
1.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
634
6.61
674
7.37
711
8.14
746
8.94
686
8.72
723
9.51
759 10.33
792 11.16
713
9.94
749 10.77
784 11.60
816 12.45
741 11.30
776 12.14
810 13.00
841 13.87
769 12.78
803 13.65
836 14.53
867 15.42
798 14.39
831 15.29
863 16.20
893 17.11
827 16.14
860 17.07
890 18.00
920 18.94
857 18.04
888 18.99
918 19.94
947 20.90
887 20.08
918 21.05
947 22.03
975 23.02
918 22.28
947 23.28
976 24.28 1003 25.28
949 24.63
977 25.65 1005 26.68 1032 27.71
980 27.14 1008 28.19 1035 29.24 1061 30.29
1011 29.82 1038 30.89 1065 31.96 1090 33.04
1043 32.67 1069 33.76 1095 34.85 1120 35.95
1075 35.69 1101 36.80 1126 37.92 1150 39.04
1.6
Rpm Bhp
779
9.76
824 12.01
848 13.32
872 14.76
897 16.33
922 18.04
949 19.88
975 21.87
1002 24.01
1030 26.30
1058 28.75
1086 31.35
1115 34.12
1144 37.06
1174 40.17
1.8
Rpm Bhp
811 10.60
855 12.88
878 14.21
901 15.66
926 17.25
950 18.98
976 20.84
1002 22.85
1029 25.01
1056 27.32
1083 29.79
1111 32.42
1139 35.21
1168 38.17
1197 41.30
2.0
Rpm Bhp
841 11.45
884 13.76
906 15.11
929 16.58
953 18.19
978 19.93
1003 21.81
1028 23.84
1054 26.02
1081 28.35
1108 30.85
1135 33.49
1163 36.31
1191 39.29
—
—
2.6
Rpm Bhp
925 14.13
965 16.52
987 17.90
1008 19.42
1031 21.07
1054 22.86
1078 24.80
1102 26.88
1126 29.11
1152 31.50
1177 34.05
—
—
—
—
—
—
—
—
Available External Static Pressure (in. wg)
2.8
3.0
3.2
3.4
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
951 15.06
977 16.00 1002 16.96 1026 17.92
991 17.47 1016 18.44 1040 19.42 1063 20.41
1012 18.87 1036 19.84 1060 20.83 1083 21.84
1033 20.39 1057 21.38 1081 22.39 1104 23.40
1055 22.06 1079 23.06 1102 24.07 1125 25.10
1078 23.86 1101 24.88 1124 25.91 1147 26.94
1101 25.81 1124 26.84 1147 27.89 1169 28.94
1125 27.91 1148 28.96 1170 30.01 1192 31.08
1149 30.16 1172 31.22 1194 32.30
—
—
1174 32.57 1196 33.65
—
—
—
—
1199 35.13
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.6
Rpm Bhp
1049 18.90
1086 21.41
1106 22.85
1126 24.43
1147 26.14
1169 28.00
1190 30.00
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.8
Rpm Bhp
1072 19.89
1109 22.43
1128 23.88
1148 25.47
1169 27.19
1190 29.06
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.0
Rpm Bhp
1094 20.89
1131 23.46
1150 24.92
1170 26.52
1190 28.26
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.4
Rpm Bhp
646
5.40
694
6.69
743
8.17
793
9.86
843 11.75
895 13.86
946 16.21
998 18.79
1050 21.62
1103 24.71
1155 28.06
50A4,A5050 (50 TONS) (cont)
Airflow
(Cfm)
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
2.2
Rpm Bhp
941
9.53
971 11.02
1004 12.70
1039 14.59
1076 16.68
1115 18.98
1156 21.52
1198 24.28
1240 27.29
1284 30.55
—
—
50A4,A5060 (60 TONS)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
0.2
Rpm Bhp
490
4.48
554
6.41
586
7.56
619
8.83
652 10.23
685 11.76
719 13.44
753 15.26
787 17.23
821 19.35
855 21.63
889 24.07
924 26.67
958 29.45
993 32.40
50A4,A5060 (60 TONS) (cont)
Airflow
(Cfm)
12,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
26,000
27,000
2.2
Rpm Bhp
870 12.33
912 14.67
934 16.02
957 17.51
980 19.13
1004 20.89
1028 22.80
1053 24.85
1079 27.04
1105 29.39
1131 31.90
1158 34.57
1186 37.41
—
—
—
—
2.4
Rpm Bhp
898 13.22
939 15.59
961 16.96
983 18.46
1006 20.10
1029 21.87
1053 23.79
1078 25.86
1103 28.07
1129 30.44
1155 32.97
1181 35.66
—
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses,
and clean 2-in. filters.
2. Conversion — Bhp to watts:
Watts =
Bhp x 746
Motor efficiency
3. Variable air volume units will operate down to 70 cfm/ton. Performance at
70 cfm/ton is limited to unloaded operation and may be additionally limited by
edb and ewb conditions.
58
FAN PERFORMANCE — POWER EXHAUST
48/50A2,A3,A4,A5020-050 (20 to 50 Tons)
208 V
Airflow
(Cfm)
ESP
Bhp
Watts
7,700
0.60
3.69
4140
7,900
0.56
3.74
4190
8,100
0.51
3.78
4240
8,500
0.41
3.83
4290
8,900
0.31
3.93
4410
9,300
0.20
4.07
4560
9,700
0.11
4.17
4670
10,100
0.04
4.25
4770
10,500
—
—
—
10,900
—
—
—
11,300
—
—
—
11,700
—
—
—
230, 460, 575 V
ESP
Bhp
Watts
0.73
3.98
4460
0.69
4.02
4510
0.65
4.07
4560
0.56
4.12
4620
0.47
4.23
4740
0.37
4.37
4900
0.30
4.47
5010
0.23
4.56
5110
0.17
4.66
5220
0.12
4.75
5330
0.07
4.80
5380
0.04
4.83
5420
LEGEND
Bhp
— Brake Horsepower
ESP — External Static Pressure (in. wg)
Watts — Input Watts to Motor
48/50A2,A3,A4,A5060 (60 Tons)
208 V
Airflow
(Cfm)
ESP
Bhp
11,550
0.60
5.54
11,850
0.56
5.61
12,150
0.51
5.67
12,750
0.41
5.74
13,350
0.31
5.90
13,950
0.20
6.10
14,550
0.11
6.25
15,150
0.04
6.38
15,750
—
—
16,350
—
—
16,950
—
—
17,550
—
—
Watts
6210
6285
6360
6435
6615
6840
7005
7155
—
—
—
—
230, 460, 575 V
ESP
Bhp
Watts
0.73
5.97
6690
0.69
6.03
6765
0.65
6.10
6840
0.56
6.18
6930
0.47
6.34
7110
0.37
6.56
7350
0.30
6.70
7515
0.23
6.84
7665
0.17
6.98
7830
0.12
7.13
7995
0.07
7.20
8070
0.04
7.25
8130
LEGEND
Bhp
— Brake Horsepower
ESP — External Static Pressure (in. wg)
Watts — Input Watts to Motor
MOTOR LIMITATIONS
Nominal
Bhp
5
BkW
3.73
10
7.46
15
11.19
20
14.92
25
18.65
30
22.38
40
29.84
Bhp
5.9
10.2
11.8
15.3
18.0
22.4
23.4
28.9
29.4
35.6
34.7
42.0
HIGH-EFFICIENCY MOTORS
Maximum
BkW
230 v
4.40
15.0
7.61
31.0
8.80
—
11.41
46.0
13.43
—
16.71
60.0
17.46
—
21.56
73.0
21.93
—
26.56
91.0
25.89
—
31.33
110.0
Nominal
Bhp
BkW
Bhp
5
BkW
3.73
10
7.46
15
11.19
20
14.92
25
18.65
30
22.38
40
29.84
Bhp
5.9
10.2
11.8
15.3
18.0
22.4
23.4
28.9
29.4
35.6
34.7
42.0
Maximum Amps
460 v
7.9
—
15.0
—
22.0
—
28.7
—
37.4
—
43.8
55.0
575 v
6.0
—
12.0
—
19.0
—
23.0
—
28.4
—
36.3
43.8
PREMIUM-EFFICIENCY MOTORS
Maximum
Maximum Amps
BkW
230 v
460 v
4.40
15.8
7.9
7.61
30.0
—
8.80
—
15.0
11.41
46.0
—
13.43
22.0
16.71
59.0
—
17.46
—
28.7
21.56
73.0
—
21.93
—
36.3
26.56
82.6
—
25.89
—
41.7
31.33
110.0
55.0
LEGEND
— Brake Horsepower
— Brake Kilowatts
Maximum
Efficiency
87.5
89.5
89.5
91.0
91.0
91.0
91.0
91.7
91.7
92.4
92.4
93.0
Maximum
Efficiency
89.5
91.7
91.7
93.0
93.0
93.6
93.6
93.6
93.6
93.6
93.6
94.5
2. All motors comply with Energy Policy Act (EPACT) Standards effective October 24, 1997.
NOTES:
1. Extensive motor and electrical testing on the Carrier units has
ensured that the full horsepower range of the motor can be utilized
with confidence. Using the fan motors up to the horsepower ratings
shown in the Motor Limitations table will not result in nuisance tripping or premature motor failures. Unit warranty will not be affected.
59
Performance data (cont)
AIR QUANTITY LIMITS (48A2,A3,A4,A5)
UNIT
48A2,A3,A4,A5
020
025
027
030
035
040
050
060
CV
VAV
MINIMUM HEATING
AIRFLOW CFM
(Low Heat)
5,900
5,900
5,900
5,900
5,900
7,600
7,600
11,000
MINIMUM HEATING
AIRFLOW CFM
(High Heat)
6,100
6,100
6,100
6,100
10,100
10,100
10,100
14,700
LEGEND
— Constant Volume
— Variable Air Volume
MINIMUM COOLING
AIRFLOW (VAV) CFM
AT FULL LOAD
4,000
5,000
5,400
6,000
7,000
8,000
10,000
12,000
MINIMUM COOLING
AIRFLOW CFM
(CV)
6,000
7,500
8,100
9,000
10,500
12,000
13,500
18,000
MAXIMUM AIRFLOW
CFM
10,000
12,500
13,500
15,000
17,500
20,000
20,000
27,000
NOTE: Variable air volume units will operate down to 70 cfm/ton in
Cooling mode. Performance at 70 cfm/ton is limited to unloaded operation and may be also limited by edb (entering dry bulb) and ewb (entering wet bulb) conditions.
AIR QUANTITY LIMITS (50A2,A3,A4,A5)
UNIT
50A2,A4020
50A3,A5020
50A2,A4025
50A3,A5025
50A2,A4027
50A3,A5027
50A2,A4030
50A3,A5030
50A2,A4035
50A3,A5035
50A2,A4040
50A3,A5040
50A2,A4050
50A3,A5050
50A2,A4060
50A3,A5060
COOLING
Min CFM
6,000
4,000
7,500
5,000
8,100
5,400
9,000
6,000
10,500
7,000
12,000
8,000
13,500
10,000
18,000
12,000
ELECTRIC HEAT
Max CFM*
10,000
10,000
12,500
12,500
13,500
13,500
15,000
15,000
17,500
17,500
20,000
20,000
20,000
20,000
27,000
27,000
*Operation at these levels may be limited by entering evaporator air wet
bulb temperatures.
60
Min CFM
Max CFM
6,000
15,000
10,500
20,000
15,000
27,000
NOTES:
1. Extensive motor and electrical testing on the Carrier units has
ensured that the full horsepower range of the motor can be utilized
with confidence. Using the fan motors up to the horsepower ratings
shown in the Motor Limitations table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
2. All motors comply with Energy Policy Act (EPACT) Standards effective October 24, 1997.
Electrical data
48A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET
UNIT
SIZE
48A
VOLTAGE
3 PH, 60 Hz
208
230
VOLTAGE
RANGE
Min
187
207
Max
Cir A, No. 1
RLA
LRA
229
253
22.4
22.4
149
149
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
22.4
22.4
149
149
29.5
29.5
195
195
Cir B, No. 2
RLA
LRA
—
—
—
—
CONDENSER
FAN MOTOR
Qty
2
2
FLA
6.5
(ea)
6.6
(ea)
EVAPORATOR
FAN MOTOR
Hp
FLA
5
16.7
10
30.8
15
46.2
5
15.2
10
28.0
15
42.0
020
460
575
208
230
414
518
187
207
508
632
229
253
10.6
7.7
29.5
29.5
75
54
195
195
10.6
7.7
29.5
29.5
75
54
195
195
14.7
12.2
29.5
29.5
95
80
195
195
—
—
—
—
—
—
—
—
2
2
2
2
3.3
(ea)
2.6
(ea)
6.5
(ea)
6.6
(ea)
5
7.6
10
14.0
15
21.0
5
6.1
10
11.0
15
17.0
5
16.7
10
30.8
15
46.2
5
15.2
10
28.0
15
42.0
025
460
575
208
230
414
518
187
207
508
632
229
253
14.7
12.2
29.5
29.5
95
80
195
195
14.7
12.2
29.5
29.5
95
80
195
195
14.7
12.2
29.5
29.5
95
80
195
195
—
—
—
—
—
—
—
—
2
2
2
2
3.3
(ea)
2.6
(ea)
6.5
(ea)
6.6
(ea)
5
7.6
10
14.0
15
21.0
5
6.1
10
11.0
15
17.0
10
30.8
15
46.2
20
59.4
10
28.0
15
42.0
20
54.0
027
460
575
414
518
508
632
14.7
12.2
95
80
14.7
12.2
95
80
14.7
12.2
95
80
—
—
—
—
2
2
3.3
(ea)
2.6
(ea)
10
14.0
15
21.0
20
27.0
10
11.0
15
17.0
20
22.0
POWER
EXHAUST
FLA (total)
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
12.6
—
12.6
—
12.6
—
9.6
—
9.6
—
9.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
12.6
—
12.6
—
12.6
—
9.6
—
9.6
—
9.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
12.6
—
12.6
—
12.6
—
9.6
—
9.6
—
9.6
POWER SUPPLY
MCA
111.4
135.0
125.8
149.4
145.1
168.7
110.1
133.7
122.9
146.5
140.0
163.6
53.8
66.4
60.2
72.8
68.8
81.4
42.0
51.6
46.9
56.5
54.1
63.7
125.6
149.2
140.0
163.6
159.3
182.9
124.3
147.9
137.1
160.7
154.2
177.8
62.0
74.6
68.4
81.0
77.0
89.6
51.0
60.6
55.9
65.5
63.1
72.7
140.0
163.6
159.3
182.9
175.8
199.4
137.1
160.7
154.2
177.8
169.2
192.8
68.4
81.0
77.0
89.6
84.5
97.1
55.9
65.5
63.1
72.7
69.3
78.9
MOCP*
125
150
150
175
175
200
125
150
150
175
175
200
60
80
70
80
80
100
50
60
50
60
70
80
150
175
150
175
200
225
150
175
150
175
175
200
70
80
80
90
90
110
60
70
60
70
80
80
150
175
200
225
225
250
150
175
175
200
200
225
80
90
90
110
110
110
60
70
80
80
90
110
See Legend and Notes on page 85.
61
Electrical data (cont)
48A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
48A
VOLTAGE
3 PH, 60 Hz
VOLTAGE
RANGE
Min
208
230
187
207
Max
Cir A, No. 1
RLA
LRA
229
253
23.2
23.2
184
164
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
23.2
23.2
164
164
23.2
23.2
164
164
Cir B, No. 2
RLA
LRA
23.2
23.2
164
164
CONDENSER
FAN MOTOR
Qty
2
2
FLA
6.5
(ea)
6.6
(ea)
EVAPORATOR
FAN MOTOR
Hp
FLA
10
30.8
15
46.2
20
59.4
10
28.0
15
42.0
20
54.0
10
14.0
15
21.0
20
27.0
10
11.0
15
17.0
030
460
575
208
230
414
518
187
207
508
632
229
253
11.2
7.9
22.4
22.4
75
54
149
149
11.2
7.9
22.4
22.4
75
54
149
149
11.2
7.9
30.1
30.1
75
54
225
225
11.2
7.9
30.1
30.1
75
54
225
225
2
2
2
2
3.3
(ea)
2.6
(ea)
6.5
(ea)
6.6
(ea)
20
22.0
15
46.2
20
59.4
25
74.8
15
42.0
20
54.0
25
68.0
15
21.0
20
27.0
035
460
575
208
230
414
518
187
207
508
632
229
253
10.6
7.7
30.1
30.1
75
54
225
225
10.6
7.7
30.1
30.1
75
54
225
225
16.7
12.2
30.1
30.1
114
80
225
225
16.7
12.2
30.1
30.1
114
80
225
225
2
2
4
4
3.3
(ea)
2.6
(ea)
6.5
(ea)
6.6
(ea)
25
34.0
15
17.0
20
22.0
25
27.0
15
46.2
20
59.4
25
74.8
15
42.0
20
54.0
25
68.0
15
21.0
20
27.0
25
34.0
15
17.0
20
22.0
25
27.0
040
460
575
414
518
508
632
See Legend and Notes on page 85.
62
16.7
12.2
114
80
16.7
12.2
114
80
16.7
12.2
114
80
16.7
12.2
114
80
4
4
3.3
(ea)
2.6
(ea)
POWER
EXHAUST
FLA (total)
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
12.6
—
12.6
—
12.6
—
9.6
—
9.6
—
9.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
12.6
—
12.6
—
12.6
—
9.6
—
9.6
—
9.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
12.6
—
12.6
—
12.6
—
9.6
—
9.6
—
9.6
POWER SUPPLY
MCA
144.3
167.9
163.6
187.2
180.1
203.7
141.0
164.6
158.5
182.1
173.5
197.1
68.9
81.5
77.7
90.3
85.2
97.8
50.6
60.2
58.1
67.7
64.3
73.9
175.8
199.4
192.3
215.9
211.5
235.1
170.7
194.3
185.7
209.3
203.2
226.8
87.5
100.1
95.0
107.6
103.7
116.3
66.3
75.9
72.5
82.1
78.8
88.4
204.2
227.8
220.7
244.3
239.9
263.5
199.3
222.9
214.3
237.9
231.8
255.4
106.3
118.9
113.8
126.4
122.5
135.1
80.5
90.1
86.7
96.3
93.0
102.6
MOCP*
175
175
200
225
225
250
150
175
200
200
225
250
80
90
90
110
110
110
60
70
70
80
80
90
200
225
250
250
250
300
200
225
225
250
250
250
100
110
110
125
125
150
80
90
90
100
100
110
250
250
250
300
300
300
225
250
250
250
250
300
125
125
125
150
150
150
90
100
100
110
110
125
48A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
48A
VOLTAGE
3 PH, 60 Hz
VOLTAGE
RANGE
Min
208
230
187
207
Max
229
253
Cir A, No. 1
RLA
LRA
33.3
33.3
239
239
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
33.3
33.3
239
239
33.3
33.3
239
239
Cir B, No. 2
RLA
LRA
33.3
33.3
239
239
CONDENSER
FAN MOTOR
Qty
4
4
FLA
6.5
(ea)
6.6
(ea)
EVAPORATOR
FAN MOTOR
Hp
FLA
20
59.4
25
74.8
30
88.0
20
54.0
25
68.0
30
80.0
050
460
575
208
230
414
518
187
207
508
632
229
253
17.9
12.8
51.3
51.3
125
80
300
300
17.9
12.8
51.3
51.3
125
80
300
300
17.9
12.8
51.3
51.3
125
80
300
300
17.9
12.8
51.3
51.3
125
80
300
300
4
4
4
4
3.3
(ea)
2.6
(ea)
5.5
(ea)
5.8
(ea)
060
(MCHX)
460
575
208
230
414
518
187
207
508
632
229
253
22.4
19.9
51.3
51.3
150
109
300
300
22.4
19.9
51.3
51.3
150
109
300
300
22.4
19.9
51.3
51.3
150
109
300
300
22.4
19.9
51.3
51.3
150
109
300
300
4
4
6
6
2.9
(ea)
2.3
(ea)
6.5
(ea)
6.6
(ea)
060
(RTPF)
460
575
414
518
508
632
22.4
19.9
150
109
22.4
19.9
150
109
22.4
19.9
150
109
22.4
19.9
150
109
6
6
3.3
(ea)
2.6
(ea)
20
27.0
25
34.0
30
40.0
20
22.0
25
27.0
30
32.0
25
74.8
30
88.0
40
114.0
25
68.0
30
80.0
40
104.0
25
34.0
30
40.0
40
52.0
25
27.0
30
32.0
40
41.0
25
74.8
30
88.0
40
114.0
25
68.0
30
80.0
40
104.0
25
34.0
30
40.0
40
52.0
25
27.0
30
32.0
40
41.0
POWER
EXHAUST
FLA (total)
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
23.6
—
12.6
—
12.6
—
12.6
—
9.6
—
9.6
—
9.6
—
35.4
—
35.4
—
35.4
—
35.4
—
35.4
—
35.4
—
18.9
—
18.9
—
18.9
—
14.4
—
14.4
—
14.4
—
35.4
—
35.4
—
35.4
—
35.4
—
35.4
—
35.4
—
18.9
—
18.9
—
18.9
—
14.4
—
14.4
—
14.4
POWER SUPPLY
MCA
233.5
257.1
252.7
276.3
269.2
292.8
227.1
250.7
244.6
268.2
259.6
283.2
118.6
131.2
127.3
139.9
134.8
147.4
89.1
98.7
95.4
105.0
101.6
111.2
320.7
356.1
337.2
372.6
369.7
405.1
313.4
348.8
328.4
363.8
358.4
393.8
143.7
162.6
151.2
170.1
166.2
185.1
122.6
137.0
128.8
143.2
140.1
154.5
337.7
373.1
354.2
389.6
386.7
422.1
329.8
365.2
344.8
380.2
374.8
410.2
151.9
170.8
159.4
178.3
174.4
193.3
129.0
143.4
135.2
149.6
146.5
160.9
MOCP*
250
300
300
350
350
350
250
300
300
300
300
350
125
150
150
150
150
175
110
110
110
125
125
125
350
400
400
450
450
500
350
400
400
400
450
450
175
175
175
200
200
225
125
150
150
175
175
175
400
400
400
450
500
500
350
400
400
450
450
500
175
200
175
200
225
225
150
150
150
175
175
200
See Legend and Notes on page 85.
63
Electrical data (cont)
48A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
UNIT
POWER SUPPLY
VOLTAGE
RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
OUTLET
SIZE
3
PH,
60
Hz
48A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA FLA (total)
FLA
MCA
MOCP*
—
7.0
118.4
125
5
16.7
7.0
142.0
150
23.6
6.5
—
7.0
132.8
150
208
187 229 22.4 149 22.4 149 29.5 195 —
—
2
10
30.8
7.0
156.4
175
(ea)
23.6
7.0
152.1
175
—
15
46.2
7.0
175.7
200
23.6
—
7.0
117.1
125
5
15.2
7.0
140.7
150
23.6
6.6
—
7.0
129.9
150
230
207 253 22.4 149 22.4 149 29.5 195 —
—
2
10
28.0
7.0
153.5
175
(ea)
23.6
7.0
147.0
175
—
15
42.0
7.0
170.6
200
23.6
020
—
3.5
57.3
70
5
7.6
3.5
69.9
80
12.6
3.3
—
3.5
63.7
70
460
414 508 10.6
75 10.6
75 14.7
95 —
—
2
10
14.0
3.5
76.3
90
(ea)
12.6
—
3.5
72.3
90
15
21.0
3.5
84.9
100
12.6
—
2.5
44.5
50
5
6.1
2.5
54.1
60
9.6
2.6
—
2.5
49.4
60
575
518 632 7.7
54
7.7
54 12.2
80 —
—
2
10
11.0
2.5
59.0
70
(ea)
9.6
—
2.5
56.6
70
15
17.0
2.5
66.2
80
9.6
—
7.0
132.6
150
5
16.7
23.6
7.0
156.2
175
6.5
—
7.0
147.0
175
—
—
10
30.8
2
208
187 229 29.5 195 29.5 195 29.5 195
(ea)
23.6
7.0
170.6
200
—
7.0
166.3
200
15
46.2
23.6
7.0
189.9
225
—
7.0
131.3
150
5
15.2
23.6
7.0
154.9
175
6.6
—
7.0
144.1
150
—
—
10
28.0
230
207 253 29.5 195 29.5 195 29.5 195
2
(ea)
23.6
7.0
167.7
175
—
7.0
161.2
200
15
42.0
23.6
7.0
184.8
225
025
—
3.5
65.5
80
5
7.6
12.6
3.5
78.1
90
3.3
—
3.5
71.9
80
460
414 508 14.7
95 14.7
95 14.7
95 —
—
2
10
14.0
(ea)
12.6
3.5
84.5
90
—
3.5
80.5
100
15
21.0
12.6
3.5
93.1
110
—
2.5
53.5
60
5
6.1
9.6
2.5
63.1
70
2.6
—
2.5
58.4
70
575
518 632 12.2
80 12.2
80 12.2
80 —
—
2
10
11.0
(ea)
9.6
2.5
68.0
80
—
2.5
65.6
80
15
17.0
9.6
2.5
75.2
90
—
7.0
147.0
175
10
30.8
23.6
7.0
170.6
200
6.5
—
7.0
166.3
200
208
187 229 29.5 195 29.5 195 29.5 195
—
—
2
15
46.2
(ea)
23.6
7.0
189.9
225
—
7.0
182.8
225
20
59.4
23.6
7.0
206.4
250
—
7.0
144.1
150
10
28.0
23.6
7.0
167.7
175
6.6
—
7.0
161.2
200
230
207 253 29.5 195 29.5 195 29.5 195
—
—
2
15
42.0
(ea)
23.6
7.0
184.8
225
—
7.0
176.2
225
20
54.0
23.6
7.0
199.8
250
027
—
3.5
71.9
80
10
14.0
12.6
3.5
84.5
90
3.3
—
3.5
80.5
100
460
414 508 14.7
95 14.7
95 14.7
95 —
—
2
15
21.0
(ea)
12.6
3.5
93.1
110
—
3.5
88.0
110
20
27.0
12.6
3.5
100.6
125
—
2.5
58.4
70
10
11.0
9.6
2.5
68.0
80
2.6
—
2.5
65.6
80
575
518 632 12.2
80 12.2
80 12.2
80 —
—
2
15
17.0
(ea)
9.6
2.5
75.2
90
—
2.5
71.8
90
20
22.0
9.6
2.5
81.4
100
See Legend and Notes on page 85.
64
48A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
UNIT
POWER SUPPLY
VOLTAGE
RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
OUTLET
SIZE
3
PH,
60
Hz
48A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA (total)
FLA
MCA
MOCP*
—
7.0
151.3
175
10
30.8
23.6
7.0
174.9
200
6.5
—
7.0
170.6
200
2
15
46.2
208
187 229 23.2 184 23.2 164 23.2 164 23.2 164
(ea)
23.6
7.0
194.2
225
—
7.0
187.1
225
20
59.4
23.6
7.0
210.7
250
—
7.0
148.0
175
10
28.0
23.6
7.0
171.6
175
6.6
—
7.0
165.5
200
230
207 253 23.2 164 23.2 164 23.2 164 23.2 164
2
15
42.0
(ea)
23.6
7.0
189.1
225
—
7.0
180.5
225
20
54.0
23.6
7.0
204.1
250
030
—
3.5
72.4
80
10
14.0
12.6
3.5
85.0
90
3.3
—
3.5
81.2
100
75 11.2
75 11.2
75 11.2
75
460
414 508 11.2
2
15
21.0
(ea)
12.6
3.5
93.8
110
—
3.5
88.7
110
20
27.0
12.6
3.5
101.3
125
—
2.5
53.1
60
10
11.0
9.6
2.5
62.7
70
2.6
—
2.5
60.6
70
575
518 632
7.9
54
7.9
54
7.9
54
7.9
54
2
15
17.0
(ea)
9.6
2.5
70.2
80
—
2.5
66.8
80
20
22.0
9.6
2.5
76.4
90
—
7.0
182.8
225
15
46.2
23.6
7.0
206.4
250
6.5
—
7.0
199.3
250
208
187 229 22.4 149 22.4 149 30.1 225 30.1 225
2
20
59.4
(ea)
23.6
7.0
222.9
250
—
7.0
218.5
250
25
74.8
23.6
7.0
242.1
300
—
7.0
177.7
200
15
42.0
23.6
7.0
201.3
225
6.6
—
7.0
192.7
225
230
207 253 22.4 149 22.4 149 30.1 225 30.1 225
2
20
54.0
(ea)
23.6
7.0
216.3
250
—
7.0
210.2
250
25
68.0
23.6
7.0
233.8
300
035
—
3.5
91.0
110
15
21.0
12.6
3.5
103.6
110
3.3
—
3.5
98.5
125
460
414 508 10.6
75 10.6
75 16.7 114 16.7 114
2
20
27.0
(ea)
12.6
3.5
111.1
125
—
3.5
107.2
125
25
34.0
12.6
3.5
119.8
150
—
2.5
68.8
80
15
17.0
9.6
2.5
78.4
90
2.6
—
2.5
75.0
90
575
518 632
7.7
54 7.7
54 12.2
80 12.2
80
2
20
22.0
(ea)
9.6
2.5
84.6
100
—
2.5
81.3
100
25
27.0
9.6
2.5
90.9
110
—
7.0
211.2
250
15
46.2
23.6
7.0
234.8
250
6.5
—
7.0
227.7
250
208
187 229 30.1 225 30.1 225 30.1 225 30.1 225
2
20
59.4
(ea)
23.6
7.0
251.3
300
—
7.0
246.9
300
25
74.8
23.6
7.0
270.5
300
—
7.0
206.3
225
15
42.0
23.6
7.0
229.9
250
6.6
—
7.0
221.3
250
230
207 253 30.1 225 30.1 225 30.1 225 30.1 225
2
20
54.0
(ea)
23.6
7.0
244.9
250
—
7.0
238.8
300
25
68.0
23.6
7.0
262.4
300
040
—
3.5
109.8
125
15
21.0
12.6
3.5
122.4
125
3.3
—
3.5
117.3
125
460
414 508 16.7 114 16.7 114 16.7 114 16.7 114
2
20
27.0
(ea)
12.6
3.5
129.9
150
—
3.5
126.0
150
25
34.0
12.6
3.5
138.6
150
—
2.5
83.0
90
15
17.0
9.6
2.5
92.6
100
2.6
—
2.5
89.2
110
575
518 632 12.2
80 12.2
80 12.2
80 12.2
80
2
20
22.0
(ea)
9.6
2.5
98.8
110
—
2.5
95.5
110
25
27.0
9.6
2.5
105.1
125
See Legend and Notes on page 85.
65
Electrical data (cont)
48A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
POWER SUPPLY
VOLTAGE RANGE
OUTLET
Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
3 PH, 60 Hz
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA (total)
FLA
MCA MOCP*
—
7.0
240.5
250
20
59.0
23.6
7.0
264.1
300
6.5
—
7.0
259.7
300
4
25
75.0
208
187 229 33.3 239 33.3 239 33.3 239 33.3 239
(ea)
23.6
7.0
283.3
350
—
7.0
276.2
350
30
88.0
23.6
7.0
299.8
350
—
7.0
234.1
250
20
54.0
23.6
7.0
257.7
300
6.6
—
7.0
251.6
300
230
207 253 33.3 239 33.3 239 33.3 239 33.3 239
4
25
68.0
(ea)
23.6
7.0
275.2
300
—
7.0
266.6
300
30
80.0
23.6
7.0
290.2
350
050
—
3.5
122.1
125
20
27.0
12.6
3.5
134.7
150
3.3
—
3.5
130.8
150
460
414 508 17.9 125 17.9 125 17.9 125 17.9 125
4
25
34.0
(ea)
12.6
3.5
143.4
175
—
3.5
138.3
175
30
40.0
12.6
3.5
150.9
175
—
2.5
91.6
110
20
22.0
9.6
2.5
101.2
110
2.6
—
2.5
97.9
110
575
518 632 12.8
4
25
27.0
80 12.8
80 12.8
80 12.8 80
(ea)
9.6
2.5
107.5
125
—
2.5
104.1
125
30
32.0
9.6
2.5
113.7
125
—
7.0
327.7
400
25
75.0
35.4
7.0
363.1
400
5.5
—
7.0
344.2
400
4
30
88.0
208
187 229 51.3 300 51.3 300 51.3 300 51.3 300
(ea)
35.4
7.0
379.6
450
—
7.0
376.7
450
40
114.0
35.4
7.0
412.1
500
—
7.0
320.4
350
25
68.0
35.4
7.0
355.8
400
5.8
—
7.0
335.4
400
230
207 253 51.3 300 51.3 300 51.3 300 51.3 300
4
30
80.0
(ea)
35.4
7.0
370.8
450
—
7.0
365.4
450
40
104.0
35.4
7.0
400.8
500
060
(MCHX)
—
3.5
147.2
175
25
34.0
18.9
3.5
166.1
200
2.9
—
3.5
154.7
175
460
414 508 22.4 150 22.4 150 22.4 150 22.4 150
4
30
40.0
(ea)
18.9
3.5
173.6
200
—
3.5
169.7
200
40
52.0
18.9
3.5
188.6
225
—
2.5
125.1
150
25
27.0
14.4
2.5
139.5
150
2.3
—
2.5
131.3
150
575
518 632 19.9 109 19.9 109 19.9 109 19.9 109
4
30
32.0
(ea)
14.4
2.5
145.7
175
—
2.5
142.6
175
40
41.0
14.4
2.5
157.0
175
—
7.0
344.7
400
25
74.8
35.4
7.0
380.1
450
6.5
—
7.0
361.2
400
208
187 229 51.3 300 51.3 300 51.3 300 51.3 300
6
30
88.0
(ea)
35.4
7.0
396.6
450
—
7.0
393.7
500
40
114.0
35.4
7.0
429.1
500
—
7.0
336.8
400
25
68.0
35.4
7.0
372.2
400
6.6
—
7.0
351.8
400
230
207 253 51.3 300 51.3 300 51.3 300 51.3 300
6
30
80.0
(ea)
35.4
7.0
387.2
450
—
7.0
381.8
450
40
104.0
35.4
7.0
417.2
500
060
(RTPF)
—
3.5
155.4
175
25
34.0
18.9
3.5
174.3
200
3.3
—
3.5
162.9
200
460
414 508 22.4 150 22.4 150 22.4 150 22.4 150
6
30
40.0
(ea)
18.9
3.5
181.8
200
—
3.5
177.9
225
40
52.0
18.9
3.5
196.8
225
—
2.5
131.5
150
25
27.0
14.4
2.5
145.9
150
2.6
—
2.5
137.7
150
575
518 632 19.9 109 19.9 109 19.9 109 19.9 109
6
30
32.0
(ea)
14.4
2.5
152.1
175
—
2.5
149.0
175
40
41.0
14.4
2.5
163.4
200
UNIT
SIZE
48A
See Legend and Notes on page 85.
66
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
5
208
187
229
22.4
149
22.4
149
29.5
195
—
—
2
6.5
(ea)
10
FLA
POWER
EXHAUST
FLA
kW
MCA
MOCP*
—
—
75.1
150.1
—
27
54
23.6
—
75.1
150.1
—
27
54
—
—
75.1
150.1
—
27
54
—
75.1
150.1
—
75.1
150.1
—
75.1
150.1
—
86.6
173.2
—
86.6
173.2
—
86.6
173.2
—
27
54
—
27
54
—
27
54
—
36
72
—
36
72
—
36
72
111.4
114.8
171.0
135.0
144.3
200.5
125.8
132.4
188.6
149.4
161.9
218.1
145.1
151.6
207.9
168.7
181.1
237.4
110.1
127.3
192.2
133.7
156.8
221.7
122.9
143.3
208.2
125
125
200
150
150
225
150
150
200
175
175
225
175
175
250
200
200
250
125
150
225
150
175
225
150
150
225
23.6
—
86.6
173.2
—
36
72
146.5
172.8
237.7
175
175
250
—
—
86.6
173.2
—
36
72
140.0
160.8
225.7
175
175
250
23.6
—
86.6
173.2
—
36
72
163.6
190.3
255.2
200
200
300
—
—
43.3
86.6
—
36
72
53.8
63.6
96.1
60
70
110
12.6
—
43.3
86.6
—
36
72
66.4
79.4
111.9
80
80
125
—
—
43.3
86.6
—
36
72
60.2
71.6
104.1
70
80
110
12.6
—
43.3
86.6
—
36
72
72.8
87.4
119.9
80
90
125
—
—
43.3
86.6
—
36
72
68.8
80.4
112.9
80
90
125
12.6
—
43.3
86.6
—
36
72
81.4
96.1
128.6
100
100
150
—
—
34.6
69.3
—
36
72
42.0
50.9
76.9
50
60
90
9.6
—
34.6
69.3
—
36
72
51.6
62.9
88.9
60
70
100
—
—
34.6
69.3
—
36
72
46.9
57.0
83.1
50
60
90
9.6
—
34.6
69.3
—
36
72
56.5
69.0
95.1
60
70
100
—
—
34.6
69.3
—
36
72
54.1
64.5
90.6
70
70
100
9.6
—
34.6
69.3
—
36
72
63.7
76.5
102.6
80
80
110
—
—
34.2
68.4
—
23
45
59.2
59.2
96.9
70
70
100
14.8
—
34.2
68.4
—
23
45
74.0
74.0
115.4
90
90
125
—
—
34.2
68.4
—
23
45
66.8
66.8
106.4
80
80
110
14.8
—
34.2
68.4
—
23
45
81.6
82.1
124.9
90
90
125
—
—
34.2
68.4
—
23
45
76.5
76.5
116.1
100
100
125
14.8
—
34.2
68.4
—
23
45
91.3
91.9
134.6
110
110
150
16.7
30.8
—
46.2
23.6
—
5
15.2
23.6
—
230
207
253
22.4
149
22.4
149
29.5
195
—
—
2
6.6
(ea)
10
15
5
020
460
414
508
10.6
75
10.6
75
14.7
95
—
—
2
3.3
(ea)
10
15
5
575
518
632
7.7
54
7.7
54
12.2
80
—
—
2
2.6
(ea)
10
15
5
380
342
418
11
75.3
11
75.3
16.7
123
—
—
2
3.6
(ea)
10
15
POWER SUPPLY
FLA
(total)
23.6
15
OPTIONAL
ELECTRIC HEAT
28.0
42.0
7.6
14.0
21.0
6.1
11.0
17.0
9.1
16.7
24.5
See Legend and Notes on page 85.
67
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
5
208
187
229
29.5
195
29.5
195
29.5
195
—
—
2
6.5
(ea)
10
FLA
POWER
EXHAUST
FLA
kW
MCA
MOCP*
—
—
75.1
150.1
—
27
54
23.6
—
75.1
150.1
—
27
54
—
—
75.1
150.1
—
27
54
—
75.1
150.1
—
75.1
150.1
—
75.1
150.1
—
86.6
173.2
—
86.6
173.2
—
86.6
173.2
—
27
54
—
27
54
—
27
54
—
36
72
—
36
72
—
36
72
125.6
125.6
171.0
149.2
149.2
200.5
140.0
140.0
188.6
163.6
163.6
218.1
159.3
159.3
207.9
182.9
182.9
237.4
124.3
127.3
192.2
147.9
156.8
221.7
137.1
143.3
208.2
150
150
200
175
175
225
150
150
200
175
175
225
200
200
250
225
225
250
150
150
225
175
175
225
150
150
225
23.6
—
86.6
173.2
—
36
72
160.7
172.8
237.7
175
175
250
—
—
86.6
173.2
—
36
72
154.2
160.8
225.7
175
175
250
23.6
—
86.6
173.2
—
36
72
177.8
190.3
255.2
200
200
300
—
—
43.3
86.6
—
36
72
62.0
63.6
96.1
70
70
110
12.6
—
43.3
86.6
—
36
72
74.6
79.4
111.9
80
80
125
—
—
43.3
86.6
—
36
72
68.4
71.6
104.1
80
80
110
12.6
—
43.3
86.6
—
36
72
81.0
87.4
119.9
90
90
125
—
—
43.3
86.6
—
36
72
77.0
80.4
112.9
90
90
125
12.6
—
43.3
86.6
—
36
72
89.6
96.1
128.6
110
110
150
—
—
34.6
69.3
—
36
72
51.0
51.0
76.9
60
60
90
9.6
—
34.6
69.3
—
36
72
60.6
62.9
88.9
70
70
100
—
—
34.6
69.3
—
36
72
55.9
57.0
83.1
60
60
90
9.6
—
34.6
69.3
—
36
72
65.5
69.0
95.1
70
70
100
—
—
34.6
69.3
—
36
72
63.1
64.5
90.6
80
80
100
9.6
—
34.6
69.3
—
36
72
72.7
76.5
102.6
80
80
110
—
—
34.2
68.4
—
23
45
70.6
70.6
96.9
80
80
100
14.8
—
34.2
68.4
—
23
45
85.4
85.4
115.4
100
100
125
—
—
34.2
68.4
—
23
45
78.2
78.2
106.4
90
90
110
14.8
—
34.2
68.4
—
23
45
93.0
93.0
124.9
100
100
125
—
—
34.2
68.4
—
23
45
87.9
87.9
116.1
110
110
125
14.8
—
34.2
68.4
—
23
45
102.7
102.7
134.6
125
125
150
16.7
30.8
—
46.2
23.6
—
5
15.2
23.6
—
230
207
253
29.5
195
29.5
195
29.5
195
—
—
2
6.6
(ea)
10
15
5
025
460
414
508
14.7
95
14.7
95
14.7
95
—
—
2
3.3
(ea)
10
15
5
575
518
632
12.2
80
12.2
80
12.2
80
—
—
2
2.6
(ea)
10
15
5
380
342
418
16.7
123
16.7
123
16.7
123
—
—
2
3.6
(ea)
10
15
See Legend and Notes on page 85.
68
POWER SUPPLY
FLA
(total)
23.6
15
OPTIONAL
ELECTRIC HEAT
28.0
42.0
7.6
14.0
21.0
6.1
11.0
17.0
9.1
16.7
24.5
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
10
208
187
229
29.5
195
29.5
195
29.5
195
—
—
2
6.5
(ea)
15
20
10
230
207
253
29.5
195
29.5
195
29.5
195
—
—
2
6.6
(ea)
15
20
FLA
POWER
EXHAUST
OPTIONAL
ELECTRIC HEAT
POWER SUPPLY
FLA
(total)
FLA
kW
MCA
—
—
75.1
150.1
—
27
54
140.0
140.0
188.6
150
150
200
23.6
—
75.1
150.1
—
27
54
163.6
163.6
218.1
175
175
225
—
—
75.1
150.1
—
27
54
159.3
159.3
207.9
200
200
250
23.6
—
75.1
150.1
—
27
54
182.9
182.9
237.4
225
225
250
—
—
75.1
150.1
—
27
54
175.8
175.8
224.4
225
225
250
23.6
—
75.1
150.1
—
27
54
199.4
199.4
253.9
250
250
300
—
—
86.6
173.2
—
36
72
137.1
143.3
208.2
150
150
225
23.6
—
86.6
173.2
—
36
72
160.7
172.8
237.7
175
175
250
—
—
86.6
173.2
—
36
72
154.2
160.8
225.7
175
175
250
23.6
—
86.6
173.2
—
36
72
177.8
190.3
255.2
200
200
300
—
—
86.6
173.2
—
36
72
169.2
175.8
240.7
200
200
250
23.6
—
86.6
173.2
—
36
72
192.8
205.3
270.2
225
225
300
—
43.3
86.6
—
43.3
86.6
—
36
72
68.4
71.6
104.1
80
80
110
—
36
72
81.0
87.4
119.9
90
90
125
—
—
43.3
86.6
—
36
72
77.0
80.4
112.9
90
90
125
12.6
—
43.3
86.6
—
36
72
89.6
96.1
128.6
110
110
150
—
—
43.3
86.6
—
36
72
84.5
87.9
120.4
110
110
125
12.6
—
43.3
86.6
—
36
72
97.1
103.6
136.1
110
110
150
—
—
34.6
69.3
—
36
72
55.9
57.0
83.1
60
60
90
9.6
—
34.6
69.3
—
36
72
65.5
69.0
95.1
70
70
100
—
—
34.6
69.3
—
36
72
63.1
64.5
90.6
80
80
100
9.6
—
34.6
69.3
—
36
72
72.7
76.5
102.6
80
80
110
—
—
34.6
69.3
—
36
72
69.3
70.8
96.8
90
90
110
9.6
—
34.6
69.3
—
36
72
78.9
82.8
108.8
100
100
125
—
—
34.2
68.4
—
23
45
78.2
78.2
106.4
90
90
110
14.8
—
34.2
68.4
—
23
45
93.0
93.0
124.9
100
100
125
—
—
34.2
68.4
—
23
45
87.9
87.9
116.1
110
110
125
14.8
—
34.2
68.4
—
23
45
102.7
102.7
134.6
125
125
150
—
—
34.2
68.4
—
23
45
94.8
94.8
123.0
110
110
125
14.8
—
34.2
68.4
—
23
45
109.6
109.6
141.5
125
125
150
30.8
46.2
59.4
28.0
42.0
54.0
—
10
14.0
12.6
027
460
414
508
14.7
95
14.7
95
14.7
95
—
—
2
3.3
(ea)
15
20
10
575
518
632
12.2
80
12.2
80
12.2
80
—
—
2
2.6
(ea)
15
20
10
380
342
418
16.7
123
16.7
123
16.7
123
—
—
2
3.6
(ea)
15
20
21.0
27.0
11.0
17.0
22.0
16.7
24.5
30.0
MOCP*
See Legend and Notes on page 85.
69
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
10
208
187
229
23.2
164
23.2
164
23.2
164
23.2
164
2
6.5
(ea)
15
20
10
230
207
253
23.2
164
23.2
164
23.2
164
23.2
164
2
6.6
(ea)
15
20
10
030
460
414
508
11.2
75
11.2
75
11.2
75
11.2
75
2
3.3
(ea)
15
20
10
575
518
632
7.9
54
7.9
54
7.9
54
7.9
54
2
2.6
(ea)
15
20
10
380
342
418
12.2
73
12.2
73
12.2
73
12.2
73
2
3.6
(ea)
15
20
See Legend and Notes on page 85.
70
FLA
POWER
EXHAUST
OPTIONAL
ELECTRIC HEAT
POWER SUPPLY
FLA
(total)
FLA
kW
MCA
MOCP*
—
—
75.1
150.1
—
27
54
144.3
144.3
188.6
175
175
200
23.6
—
75.1
150.1
—
27
54
167.9
167.9
218.1
175
175
225
—
—
75.1
150.1
—
27
54
163.6
163.6
207.9
200
200
250
23.6
—
75.1
150.1
—
27
54
187.2
187.2
237.4
225
225
250
—
—
75.1
150.1
—
27
54
180.1
180.1
224.4
225
225
250
23.6
—
75.1
150.1
—
27
54
203.7
203.7
253.9
250
250
300
—
—
86.6
173.2
—
36
72
141.0
143.3
208.2
150
150
225
23.6
—
86.6
173.2
—
36
72
164.6
172.8
237.7
175
175
250
—
—
86.6
173.2
—
36
72
158.5
160.8
225.7
200
200
250
23.6
—
86.6
173.2
—
36
72
182.1
190.3
255.2
200
200
300
—
—
86.6
173.2
—
36
72
173.5
175.8
240.7
225
225
250
23.6
—
86.6
173.2
—
36
72
197.1
205.3
270.2
250
250
300
—
—
43.3
86.6
—
36
72
68.9
71.6
104.1
80
80
110
12.6
—
43.3
86.6
—
36
72
81.5
87.4
119.9
90
90
125
—
—
43.3
86.6
—
36
72
77.7
80.4
112.9
90
90
125
12.6
—
43.3
86.6
—
36
72
90.3
96.1
128.6
110
110
150
—
—
43.3
86.6
—
36
72
85.2
87.9
120.4
110
110
125
12.6
—
43.3
86.6
—
36
72
97.8
103.6
136.1
110
110
150
—
—
34.6
69.3
—
36
72
50.6
57.0
83.1
60
60
90
9.6
—
34.6
69.3
—
36
72
60.2
69.0
95.1
70
70
100
—
—
34.6
69.3
—
36
72
58.1
64.5
90.6
70
70
100
9.6
—
34.6
69.3
—
36
72
67.7
76.5
102.6
80
80
110
—
—
34.6
69.3
—
36
72
64.3
70.8
96.8
80
80
110
9.6
—
34.6
69.3
—
36
72
73.9
82.8
108.8
90
90
125
—
—
34.2
68.4
—
23
45
76.9
76.9
106.4
90
90
110
14.8
—
34.2
68.4
—
23
45
91.7
91.7
124.9
100
100
125
—
—
34.2
68.4
—
23
45
86.6
86.6
116.1
110
110
125
14.8
—
34.2
68.4
—
23
45
101.4
101.4
134.6
125
125
150
—
—
34.2
68.4
—
23
45
93.5
93.5
123.0
110
110
125
14.8
—
34.2
68.4
—
23
45
108.3
108.3
141.5
125
125
150
30.8
46.2
59.4
28.0
42.0
54.0
14.0
21.0
27.0
11.0
17.0
22.0
16.7
24.5
30.0
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
15
208
187
229
22.4
149
22.4
149
30.1
225
30.1
225
2
6.5
(ea)
20
25
15
230
207
253
22.4
149
22.4
149
30.1
225
30.1
225
2
6.6
(ea)
20
25
15
035
460
414
508
10.6
75
10.6
75
16.7
114
16.7
114
2
3.3
(ea)
20
25
FLA
POWER
EXHAUST
kW
—
—
75.1
150.1
—
27
54
175.8
175.8
207.9
200
200
250
23.6
75.1
150.1
27
54
199.4
199.4
237.4
225
225
250
—
—
75.1
150.1
—
27
54
192.3
192.3
224.4
250
250
250
23.6
—
75.1
150.1
—
27
54
215.9
215.9
253.9
250
250
300
—
—
75.1
150.1
—
27
54
211.5
211.5
243.6
250
250
300
23.6
—
75.1
150.1
—
27
54
235.1
235.1
273.1
300
300
300
—
—
86.6
173.2
—
36
72
170.7
170.7
225.7
200
200
250
23.6
—
86.6
173.2
—
36
72
194.3
194.3
255.2
225
225
300
—
—
86.6
173.2
—
36
72
185.7
185.7
240.7
225
225
250
23.6
—
86.6
173.2
—
36
72
209.3
209.3
270.2
250
250
300
—
—
86.6
173.2
—
36
72
203.2
203.2
258.2
250
250
300
23.6
—
86.6
173.2
—
36
72
226.8
226.8
287.7
250
250
300
—
—
43.3
86.6
—
36
72
87.5
87.5
112.9
100
100
125
12.6
—
43.3
86.6
—
36
72
100.1
100.1
128.6
110
110
150
—
—
43.3
86.6
—
36
72
95.0
95.0
120.4
110
110
125
12.6
—
43.3
86.6
—
36
72
107.6
107.6
136.1
125
125
150
—
—
43.3
86.6
—
36
72
103.7
103.7
129.1
125
125
150
—
43.3
86.6
—
34.6
69.3
—
36
72
—
36
72
116.3
116.3
144.9
66.3
66.3
90.6
150
150
175
80
80
100
9.6
—
34.6
69.3
—
36
72
75.9
76.5
102.6
90
90
110
—
—
34.6
69.3
—
36
72
72.5
72.5
96.8
90
90
110
9.6
—
34.6
69.3
—
36
72
82.1
82.8
108.8
100
100
125
—
—
34.6
69.3
—
36
72
78.8
78.8
103.1
100
100
125
9.6
—
34.6
69.3
—
36
72
88.4
89.0
115.1
110
110
125
—
—
34.2
68.4
—
23
45
98.2
98.2
116.1
110
110
125
14.8
—
34.2
68.4
—
23
45
113.0
113.0
134.6
125
125
150
—
—
34.2
68.4
—
23
45
105.1
105.1
123.0
125
125
125
14.8
—
34.2
68.4
—
23
45
119.9
119.9
141.5
125
125
150
—
—
34.2
68.4
—
23
45
115.1
115.1
133.0
150
150
150
14.8
—
34.2
68.4
—
23
45
129.9
129.9
151.5
150
150
175
46.2
59.4
74.8
42.0
54.0
68.0
21.0
27.0
34.0
—
575
518
632
7.7
54
7.7
54
12.2
80
12.2
80
2
2.6
(ea)
20
25
15
380
342
418
11
75.3
11
75.3
19.2
140
19.2
140
2
3.6
(ea)
20
25
POWER SUPPLY
FLA
12.6
15
OPTIONAL
ELECTRIC HEAT
FLA
(total)
17.0
22.0
27.0
24.5
30.0
38.0
MCA
MOCP*
See Legend and Notes on page 85.
71
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
15
208
187
229
30.1
225
30.1
225
30.1
225
30.1
225
4
6.5
(ea)
20
25
15
230
207
253
30.1
225
30.1
225
30.1
225
30.1
225
4
6.6
(ea)
20
25
15
040
460
414
508
16.7
114
16.7
114
16.7
114
16.7
114
4
3.3
(ea)
20
25
15
575
518
632
12.2
80
12.2
80
12.2
80
12.2
80
4
2.6
(ea)
20
25
15
380
342
418
19.2
140
19.2
140
19.2
140
19.2
140
4
3.6
(ea)
20
25
See Legend and Notes on page 85.
72
FLA
POWER
EXHAUST
OPTIONAL
ELECTRIC HEAT
POWER SUPPLY
FLA
(total)
FLA
kW
MCA
MOCP*
—
—
75.1
150.1
—
27
54
204.2
204.2
207.9
250
250
250
23.6
—
75.1
150.1
—
27
54
227.8
227.8
237.4
250
250
250
—
—
75.1
150.1
—
27
54
220.7
220.7
224.4
250
250
250
23.6
—
75.1
150.1
—
27
54
244.3
244.3
253.9
300
300
300
—
—
75.1
150.1
—
27
54
239.9
239.9
243.6
300
300
300
23.6
—
75.1
150.1
—
27
54
263.5
263.5
273.1
300
300
300
—
—
86.6
173.2
—
36
72
199.3
199.3
225.7
225
225
250
23.6
—
86.6
173.2
—
36
72
222.9
222.9
255.2
250
250
300
—
—
86.6
173.2
—
36
72
214.3
214.3
240.7
250
250
250
23.6
—
86.6
173.2
—
36
72
237.9
237.9
270.2
250
250
300
—
—
86.6
173.2
—
36
72
231.8
231.8
258.2
250
250
300
23.6
—
86.6
173.2
—
36
72
255.4
255.4
287.7
300
300
300
—
—
43.3
86.6
—
36
72
106.3
106.3
112.9
125
125
125
12.6
—
43.3
86.6
—
36
72
118.9
118.9
128.6
125
125
150
—
—
43.3
86.6
—
36
72
113.8
113.8
120.4
125
125
125
12.6
—
43.3
86.6
—
36
72
126.4
126.4
136.1
150
150
150
—
—
43.3
86.6
—
36
72
122.5
122.5
129.1
150
150
150
12.6
—
43.3
86.6
—
36
72
135.1
135.1
144.9
150
150
175
—
—
34.6
69.3
—
36
72
80.5
80.5
90.6
90
90
100
9.6
—
34.6
69.3
—
36
72
90.1
90.1
102.6
100
100
110
—
—
34.6
69.3
—
36
72
86.7
86.7
96.8
100
100
110
9.6
—
34.6
69.3
—
36
72
96.3
96.3
108.8
110
110
125
—
—
34.6
69.3
—
36
72
93.0
93.0
103.1
110
110
125
9.6
—
34.6
69.3
—
36
72
102.6
102.6
115.1
125
125
125
—
—
34.2
68.4
—
23
45
121.8
121.8
121.8
125
125
125
14.8
—
34.2
68.4
—
23
45
136.6
136.6
136.6
150
150
150
—
—
34.2
68.4
—
23
45
128.7
128.7
128.7
150
150
150
14.8
—
34.2
68.4
—
23
45
143.5
143.5
143.5
150
150
150
—
—
34.2
68.4
—
23
45
138.7
138.7
138.7
175
175
175
14.8
—
34.2
68.4
—
23
45
153.5
153.5
153.5
175
175
175
46.2
59.4
74.8
42.0
54.0
68.0
21.0
27.0
34.0
17.0
22.0
27.0
24.5
30.0
38.0
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
20
208
187
229
33.3
239
33.3
239
33.3
239
33.3
239
4
6.5
(ea)
25
30
20
230
207
253
33.3
239
33.3
239
33.3
239
33.3
239
4
6.6
(ea)
25
30
20
050
460
414
508
17.9
125
17.9
125
17.9
125
17.9
125
4
3.3
(ea)
25
30
20
575
518
632
12.8
80
12.8
80
12.8
80
12.8
80
4
2.6
(ea)
25
30
20
380
342
418
23.7
145
23.7
145
23.7
145
23.7
145
4
3.6
(ea)
25
30
FLA
POWER
EXHAUST
OPTIONAL
ELECTRIC HEAT
POWER SUPPLY
FLA
(total)
FLA
kW
MCA
MOCP*
—
—
75.1
150.1
—
27
54
233.5
233.5
233.5
250
250
250
23.6
—
75.1
150.1
—
27
54
257.1
257.1
257.1
300
300
300
—
—
75.1
150.1
—
27
54
252.7
252.7
252.7
300
300
300
23.6
—
75.1
150.1
—
27
54
276.3
276.3
276.3
350
350
350
—
—
75.1
150.1
—
27
54
269.2
269.2
269.2
350
350
350
23.6
—
75.1
150.1
—
27
54
292.8
292.8
292.8
350
350
350
—
—
86.6
173.2
—
36
72
227.1
227.1
240.7
250
250
250
23.6
—
86.6
173.2
—
36
72
250.7
250.7
270.2
300
300
300
—
—
86.6
173.2
—
36
72
244.6
244.6
258.2
300
300
300
23.6
—
86.6
173.2
—
36
72
268.2
268.2
287.7
300
300
300
—
—
86.6
173.2
—
36
72
259.6
259.6
273.2
300
300
350
23.6
—
86.6
173.2
—
36
72
283.2
283.2
302.7
350
350
350
—
—
43.3
86.6
—
36
72
118.6
118.6
120.4
125
125
125
12.6
—
43.3
86.6
—
36
72
131.2
131.2
136.1
150
150
150
—
—
43.3
86.6
—
36
72
127.3
127.3
129.1
150
150
150
12.6
—
43.3
86.6
—
36
72
139.9
139.9
144.9
150
150
175
—
—
43.3
86.6
—
36
72
134.8
134.8
136.6
150
150
175
12.6
—
43.3
86.6
—
36
72
147.4
147.4
152.4
175
175
175
—
—
34.6
69.3
—
36
72
89.1
89.1
96.8
110
110
110
9.6
—
34.6
69.3
—
36
72
98.7
98.7
108.8
110
110
125
—
—
34.6
69.3
—
36
72
95.4
95.4
103.1
110
110
125
9.6
—
34.6
69.3
—
36
72
105.0
105.0
115.1
125
125
125
—
—
34.6
69.3
—
36
72
101.6
101.6
109.3
125
125
125
9.6
—
34.6
69.3
—
36
72
111.2
111.2
121.3
125
125
150
—
—
34.2
68.4
—
23
45
146.7
146.7
146.7
175
175
175
14.8
—
34.2
68.4
—
23
45
161.5
161.5
161.5
175
175
175
—
—
34.2
68.4
—
23
45
156.7
156.7
156.7
175
175
175
14.8
—
34.2
68.4
—
23
45
171.5
171.5
171.5
200
200
200
—
—
34.2
68.4
—
23
45
163.6
163.6
163.6
200
200
200
14.8
—
34.2
68.4
—
23
45
178.4
178.4
178.4
200
200
200
59.0
75.0
88.0
54.0
68.0
80.0
27.0
34.0
40.0
22.0
27.0
32.0
30.0
38.0
43.5
See Legend and Notes on page 85.
73
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
25
208
187
229
51.3
300
51.3
300
51.3
300
51.3
300
4
5.5
(ea)
30
40
25
230
207
253
51.3
300
51.3
300
51.3
300
51.3
300
4
5.8
(ea)
30
40
25
060 (MCHX)
460
414
508
22.4
150
22.4
150
22.4
150
22.4
150
4
2.9
(ea)
30
40
25
575
518
632
19.9
109
19.9
190
19.9
109
19.9
109
4
2.3
(ea)
30
40
25
380
342
418
26.9
139
26.9
139
26.9
139
26.9
139
4
3.7
(ea)
30
40
See Legend and Notes on page 85.
74
FLA
POWER
EXHAUST
OPTIONAL
ELECTRIC HEAT
POWER SUPPLY
FLA
(total)
FLA
kW
MCA
MOCP*
—
—
112.6
225.2
—
41
81
320.7
320.7
320.7
350
350
350
35.4
—
112.6
225.2
—
41
81
356.1
356.1
363.0
400
400
400
—
—
112.6
225.2
—
41
81
337.2
337.2
337.2
400
400
400
35.4
—
112.6
225.2
—
41
81
372.6
372.6
379.5
450
450
450
—
—
112.6
225.2
—
41
81
369.7
369.7
369.7
450
450
450
35.4
—
112.6
225.2
—
41
81
405.1
405.1
412.0
500
500
500
—
—
129.9
259.8
—
54
108
313.4
313.4
344.8
350
350
400
35.4
—
129.9
259.8
—
54
108
348.8
348.8
389.1
400
400
400
—
—
129.9
259.8
—
54
108
328.4
328.4
359.8
400
400
400
35.4
—
129.9
259.8
—
54
108
363.8
363.8
404.1
400
400
450
—
—
129.9
259.8
—
54
108
358.4
358.4
389.8
450
450
450
35.4
—
129.9
259.8
—
54
108
393.8
393.8
434.1
450
450
500
—
—
65.0
129.9
—
54
108
143.7
143.7
172.4
175
175
200
18.9
—
65.0
129.9
—
54
108
162.6
162.6
196.0
175
175
225
—
—
65.0
129.9
—
54
108
151.2
151.2
179.9
175
175
200
18.9
—
65.0
129.9
—
54
108
170.1
170.1
203.5
200
200
225
—
—
65.0
129.9
—
54
108
166.2
166.2
194.9
200
200
225
18.9
—
65.0
129.9
—
54
108
185.1
185.1
218.5
225
225
250
—
—
65.0
129.9
—
54
108
122.6
122.6
137.7
125
125
150
14.4
—
65.0
129.9
—
54
108
137.0
137.0
155.7
150
150
175
—
—
65.0
129.9
—
54
108
128.8
128.8
143.9
150
150
175
14.4
—
65.0
129.9
—
54
108
143.2
143.2
161.9
175
175
175
—
—
65.0
129.9
—
54
108
140.1
140.1
155.2
175
175
175
14.4
—
65.0
129.9
—
54
108
154.5
154.5
173.2
175
175
200
—
—
51.4
102.8
—
33.8
67.7
169.9
169.9
169.9
200
200
200
22.2
—
51.4
102.8
—
33.8
67.7
192.1
192.1
192.1
225
225
225
—
—
51.4
102.8
—
33.8
67.7
176.8
176.8
176.8
200
200
200
22.2
—
51.4
102.8
—
33.8
67.7
199.0
199.0
199.0
225
225
225
—
—
51.4
102.8
—
33.8
67.7
192.7
192.7
192.7
225
225
225
22.2
—
51.4
102.8
—
33.8
67.7
214.9
214.9
214.9
250
250
250
74.8
88.0
114.0
68.0
80.0
104.0
34.0
40.0
52.0
27.0
32.0
41.0
38.0
43.5
56.2
50A2,A3,A4,A5 UNITS WITHOUT CONVENIENCE OUTLET (cont)
UNIT
SIZE
50A
VOLTAGE
3 PH,
60 Hz
VOLTAGE
RANGE
Min
Max
Cir A, No. 1
FLA
LRA
COMPRESSOR
Cir A, No. 2
Cir B, No. 1
RLA
LRA
RLA
LRA
Cir B, No. 2
RLA
LRA
CONDENSER
FAN MOTOR
Qty
FLA
EVAPORATOR
FAN MOTOR
Hp
25
208
187
229
51.3
300
51.3
300
51.3
300
51.3
300
6
6.5
(ea)
30
40
25
230
207
253
51.3
300
51.3
300
51.3
300
51.3
300
6
6.6
(ea)
30
40
25
060
(RTPF)
460
414
508
22.4
150
22.4
150
22.4
150
22.4
150
6
3.3
(ea)
30
40
25
575
518
632
19.9
109
19.9
190
19.9
109
19.9
109
6
2.6
(ea)
30
40
25
380
342
418
26.9
139
26.9
139
26.9
139
26.9
139
6
3.6
(ea)
30
40
FLA
POWER
EXHAUST
OPTIONAL
ELECTRIC HEAT
POWER SUPPLY
FLA
(total)
FLA
kW
MCA
MOCP*
—
—
112.6
225.2
—
41
81
333.7
333.7
333.7
400
400
400
35.4
—
112.6
225.2
—
41
81
373.1
373.1
373.0
400
400
400
—
—
112.6
225.2
—
41
81
354.2
354.2
354.2
400
400
400
35.4
—
112.6
225.2
—
41
81
389.6
389.6
389.6
450
450
450
—
—
112.6
225.2
—
41
81
386.7
386.7
386.7
500
500
500
35.4
—
112.6
225.2
—
41
81
422.1
422.1
422.1
500
500
500
—
—
129.9
259.8
—
54
108
329.8
329.8
344.8
350
350
400
35.4
—
129.9
259.8
—
54
108
365.2
365.2
389.1
400
400
400
—
—
129.9
259.8
—
54
108
344.8
344.8
359.8
400
400
400
35.4
—
129.9
259.8
—
54
108
380.2
380.2
404.1
450
450
450
—
—
129.9
259.8
—
54
108
374.8
374.8
389.8
450
450
450
35.4
—
129.9
259.8
—
54
108
410.2
410.2
434.1
500
500
500
—
—
65.0
129.9
—
54
108
151.9
151.9
172.4
175
175
200
18.9
—
65.0
129.9
—
54
108
170.8
170.8
196.0
200
200
225
—
—
65.0
129.9
—
54
108
159.4
159.4
179.9
175
175
200
18.9
—
65.0
129.9
—
54
108
178.3
178.3
203.5
200
200
225
—
—
65.0
129.9
—
54
108
174.4
174.4
194.9
225
225
225
18.9
—
65.0
129.9
—
54
108
193.3
193.3
218.5
225
225
250
—
—
52.0
103.9
—
54
108
129.0
129.0
137.7
150
150
150
14.4
—
52.0
103.9
—
54
108
143.4
143.4
155.7
150
150
175
—
—
52.0
103.9
—
54
108
135.2
135.2
143.9
150
150
175
14.4
—
52.0
103.9
—
54
108
149.6
149.6
161.9
175
175
175
—
—
52.0
103.9
—
54
108
146.5
146.5
155.2
175
175
175
14.4
—
52.0
103.9
—
54
108
160.9
160.9
173.2
200
200
200
—
—
51.4
102.8
—
33.8
67.7
151.9
151.9
172.4
175
175
200
22.2
—
51.4
102.8
—
33.8
67.7
170.8
170.8
196.0
200
200
225
—
—
51.4
102.8
—
33.8
67.7
159.4
159.4
179.9
175
175
200
22.2
—
51.4
102.8
—
33.8
67.7
178.3
178.3
203.5
200
200
225
—
—
51.4
102.8
—
33.8
67.7
174.4
174.4
194.9
225
225
225
22.2
—
51.4
102.8
—
33.8
67.7
193.3
193.3
218.5
225
225
250
74.8
88.0
114.0
68.0
80.0
104.0
34.0
40.0
52.0
27.0
32.0
41.0
38.0
43.5
56.2
See Legend and Notes on page 85.
75
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
5
16.7
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
6.5
2
208
187 229 22.4 149 22.4 149 29.5 195 —
—
10
30.8
(ea)
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
15
46.2
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
5
15.2
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
6.6
230
2
207 253 22.4 149 22.4 149 29.5 195 —
—
10
28.0
(ea)
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
15
42.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
020
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
5
7.6
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
3.3
460
2
414 508 10.6 75 10.6
75 14.7 95 —
—
10
14.0
(ea)
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
15
21.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
5
6.1
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
2.6
575
2
518 632
7.7 54 7.7 54 12.2 80 —
—
10
11.0
(ea)
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
15
17.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
See Legend and Notes on page 85.
76
POWER SUPPLY
MCA
MOCP*
118.4
123.5
179.7
142.0
153.0
209.2
132.8
141.1
197.4
156.4
170.6
226.9
152.1
160.4
216.6
175.7
189.9
246.1
117.1
136.0
201.0
140.7
165.5
230.5
129.9
152.0
217.0
153.5
181.5
246.5
147.0
169.5
234.5
170.6
199.0
264.0
57.3
68.0
100.5
69.9
83.8
116.2
63.7
76.0
108.5
76.3
91.8
124.2
72.3
84.8
117.2
84.9
100.5
133.0
44.5
54.0
80.1
54.1
66.0
92.1
49.4
60.1
86.2
59.0
72.1
98.2
56.6
67.6
93.7
66.2
79.6
105.7
125
125
200
150
175
225
150
150
225
175
175
250
175
175
250
200
200
250
125
150
225
150
175
250
150
175
225
175
200
250
175
175
250
200
200
300
70
70
110
80
90
125
70
80
110
90
100
125
90
90
125
100
110
150
50
60
90
60
70
100
60
70
90
70
80
100
70
70
110
80
80
110
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
5
16.7
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
6.5
2
208
—
—
187 229 29.5 195 29.5 195 29.5 195
10
30.8
(ea)
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
15
46.2
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
5
15.2
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
6.6
230
2
207 253 29.5 195 29.5 195 29.5 195
—
—
10
28.0
(ea)
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
15
42.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
025
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
5
7.6
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
3.3
460
2
414 508 14.7
95 14.7
95 14.7
95
—
—
10
14.0
(ea)
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
15
21.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
5
6.1
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
2.6
575
2
518 632 12.2
80 12.2
80 12.2
80
—
—
10
11.0
(ea)
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
15
17.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
POWER SUPPLY
MCA
MOCP*
132.6
132.6
179.7
156.2
156.2
209.2
147.0
147.0
197.4
170.6
170.6
226.9
166.3
166.3
216.6
189.9
189.9
246.1
131.3
136.0
201.0
154.9
165.5
230.5
144.1
152.0
217.0
167.7
181.5
246.5
161.2
169.5
234.5
184.8
199.0
264.0
65.5
68.0
100.5
78.1
83.8
116.2
71.9
76.0
108.5
84.5
91.8
124.2
80.5
84.8
117.2
93.1
100.5
133.0
53.5
54.0
80.1
63.1
66.0
92.1
58.4
60.1
86.2
68.0
72.1
98.2
65.6
67.6
93.7
75.2
79.6
105.7
150
150
200
175
175
225
175
175
225
200
200
250
200
200
250
225
225
250
150
150
225
175
175
250
150
175
225
175
200
250
200
200
250
225
225
300
80
80
110
90
90
125
80
80
110
90
100
125
100
100
125
110
110
150
60
60
90
70
70
100
70
70
90
80
80
100
80
80
110
90
90
110
See Legend and Notes on page 85.
77
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
POWER SUPPLY
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
MCA MOCP*
(total)
7.0
—
—
147.0
175
—
7.0
75.1
27
147.0
175
7.0
150.1
54
197.4
225
10
30.8
7.0
—
—
170.6
200
23.6
7.0
75.1
27
170.6
200
7.0
150.1
54
226.9
250
7.0
—
—
166.3
200
—
7.0
75.1
27
166.3
200
7.0
150.1
54
216.6
250
6.5
2
15
46.2
208
—
—
187 229 29.5 195 29.5 195 29.5 195
(ea)
7.0
—
—
189.9
225
23.6
7.0
75.1
27
189.9
225
7.0
150.1
54
246.1
250
7.0
—
—
182.8
225
—
7.0
75.1
27
182.8
225
7.0
150.1
54
233.1
250
20
59.4
7.0
—
—
206.4
250
23.6
7.0
75.1
27
206.4
250
7.0
150.1
54
262.6
300
7.0
—
—
144.1
150
—
7.0
86.6
36
152.0
175
7.0
173.2
72
217.0
225
10
28.0
7.0
—
—
167.7
175
23.6
7.0
86.6
36
181.5
200
7.0
173.2
72
246.5
250
7.0
—
—
161.2
200
—
7.0
86.6
36
169.5
200
7.0
173.2
72
234.5
250
6.6
230
2
15
42.0
207 253 29.5 195 29.5 195 29.5 195
—
—
(ea)
7.0
—
—
184.8
225
23.6
7.0
86.6
36
199.0
225
7.0
173.2
72
264.0
300
7.0
—
—
176.2
225
—
7.0
86.6
36
184.5
225
7.0
173.2
72
249.5
300
20
54.0
7.0
—
—
199.8
250
23.6
7.0
86.6
36
214.0
250
7.0
173.2
72
279.0
300
027
3.5
—
—
71.9
80
—
3.5
43.3
36
76.0
80
3.5
86.6
72
108.5
110
10
14.0
3.5
—
—
84.5
90
12.6
3.5
43.3
36
91.8
100
3.5
86.6
72
124.2
125
3.5
—
—
80.5
100
—
3.5
43.3
36
84.8
100
3.5
86.6
72
117.2
125
3.3
460
2
15
21.0
414 508 14.7
95 14.7
95 14.7
95
—
—
(ea)
3.5
—
—
93.1
110
12.6
3.5
43.3
36
100.5
110
3.5
86.6
72
133.0
150
3.5
—
—
88.0
110
—
3.5
43.3
36
92.3
110
3.5
86.6
72
124.7
150
20
27.0
3.5
—
—
100.6
125
12.6
3.5
43.3
36
108.0
125
3.5
86.6
72
140.5
150
2.5
—
—
58.4
70
—
2.5
34.6
36
60.1
70
2.5
69.3
72
86.2
90
10
11.0
2.5
—
—
68.0
80
9.6
2.5
34.6
36
72.1
80
2.5
69.3
72
98.2
100
2.5
—
—
65.6
80
—
2.5
34.6
36
67.6
80
2.5
69.3
72
93.7
110
2.6
575
2
15
17.0
518 632 12.2
80 12.2
80 12.2
80
—
—
(ea)
2.5
—
—
75.2
90
9.6
2.5
34.6
36
79.6
90
2.5
69.3
72
105.7
110
2.5
—
—
71.8
90
—
2.5
34.6
36
73.9
90
2.5
69.3
72
99.9
110
20
22.0
2.5
—
—
81.4
100
9.6
2.5
34.6
36
85.9
100
2.5
69.3
72
111.9
125
See Legend and Notes on page 85.
78
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
10
30.8
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
6.5
208
187 229 23.2 164 23.2 164 23.2 164 23.2 164
2
15
46.2
(ea)
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
20
59.4
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
10
28.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
6.6
230
207 253 23.2 164 23.2 164 23.2 164 23.2 164
2
15
42.0
(ea)
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
20
54.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
030
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
10
14.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
36
43.3
—
3.5
3.5
86.6
72
3.3
460
414 508 11.2
2
15
21.0
75 11.2
75 11.2
75 11.2
75
(ea)
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
20
27.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
10
11.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
2.6
15
17.0
575
518 632 7.9
2
54
7.9
54
7.9
54
7.9
54
(ea)
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
20
22.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
POWER SUPPLY
MCA
MOCP*
151.3
151.3
197.4
174.9
174.9
226.9
170.6
170.6
216.6
194.2
194.2
246.1
187.1
187.1
233.1
210.7
210.7
262.6
148.0
152.0
217.0
171.6
181.5
246.5
165.5
169.5
234.5
189.1
199.0
264.0
180.5
184.5
249.5
204.1
214.0
279.0
72.4
76.0
108.5
85.0
91.8
124.2
81.2
84.8
117.2
93.8
100.5
133.0
88.7
92.3
124.7
101.3
108.0
140.5
53.1
60.1
86.2
62.7
72.1
98.2
60.6
67.6
93.7
70.2
79.6
105.7
66.8
73.9
99.9
76.4
85.9
111.9
175
175
225
200
200
250
200
200
250
225
225
250
225
225
250
250
250
300
175
175
225
175
200
250
200
200
250
225
225
300
225
225
300
250
250
300
80
80
110
90
100
125
100
100
125
110
110
150
110
110
150
125
125
150
60
70
90
70
80
100
70
70
110
80
80
110
80
80
110
90
90
125
See Legend and Notes on page 85.
79
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
15
46.2
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
6.5
208
187 229 22.4 149 22.4 149 30.1 225 30.1 225
2
20
59.4
(ea)
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
25
74.8
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
15
42.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
6.6
230
207 253 22.4 149 22.4 149 30.1 225 30.1 225
2
20
54.0
(ea)
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
25
68.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
035
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
15
21.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
36
43.3
—
3.5
3.5
86.6
72
3.3
460
414 508 10.6
2
20
27.0
75 10.6
75 16.7 114 16.7 114
(ea)
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
25
34.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
15
17.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
2.6
575
518 632
2
20
22.0
7.7
54 7.7
54 12.2
80 12.2
80
(ea)
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
25
27.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
See Legend and Notes on page 85.
80
POWER SUPPLY
MCA
MOCP*
182.8
182.8
216.6
206.4
206.4
246.1
199.3
199.3
233.1
222.9
222.9
262.6
218.5
218.5
252.4
242.1
242.1
281.9
177.7
177.7
234.5
201.3
201.3
264.0
192.7
192.7
249.5
216.3
216.3
279.0
210.2
210.2
267.0
233.8
233.8
296.5
91.0
91.0
117.2
103.6
103.6
133.0
98.5
98.5
124.7
111.1
111.1
140.5
107.2
107.2
133.5
119.8
119.8
149.2
68.8
68.8
93.7
78.4
79.6
105.7
75.0
75.0
99.9
84.6
85.9
111.9
81.3
81.3
106.2
90.9
92.1
118.2
225
225
250
250
250
250
250
250
250
250
250
300
250
250
300
300
300
300
200
200
250
225
225
300
225
225
300
250
250
300
250
250
300
300
300
350
110
110
125
110
110
150
125
125
150
125
125
150
125
125
150
150
150
175
80
80
110
90
90
110
90
90
110
100
100
125
100
100
125
110
110
125
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
15
46.2
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
6.5
208
187 229 30.1 225 30.1 225 30.1 225 30.1 30.1
4
20
59.4
(ea)
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
25
74.8
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
15
42.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
6.6
230
207 253 30.1 225 30.1 225 30.1 225 30.1 30.1
4
20
54.0
(ea)
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
25
68.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
040
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
15
21.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
36
43.3
—
3.5
3.5
86.6
72
3.3
460
414 508 16.7 114 16.7 114 16.7 114 16.7 16.7
4
20
27.0
(ea)
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
25
34.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
15
17.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
2.6
20
22.0
575
518 632 12.2
4
80 12.2
80 12.2
80 12.2 12.2
(ea)
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
25
27.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
POWER SUPPLY
MCA
MOCP*
211.2
211.2
216.6
234.8
234.8
246.1
227.7
227.7
233.1
251.3
251.3
262.6
246.9
246.9
252.4
270.5
270.5
281.9
206.3
206.3
234.5
229.9
229.9
264.0
221.3
221.3
249.5
244.9
244.9
279.0
238.8
238.8
267.0
262.4
262.4
296.5
109.8
109.8
117.2
122.4
122.4
133.0
117.3
117.3
124.7
129.9
129.9
140.5
126.0
126.0
133.5
138.6
138.6
149.2
83.0
83.0
93.7
92.6
92.6
105.7
89.2
89.2
99.9
98.8
98.8
111.9
95.5
95.5
106.2
105.1
105.1
118.2
250
250
250
250
250
250
250
250
250
300
300
300
300
300
300
300
300
300
225
225
250
250
250
300
250
250
300
250
250
300
300
300
300
300
300
350
125
125
125
125
125
150
125
125
150
150
150
150
150
150
150
150
150
175
90
90
110
100
100
110
110
110
110
110
110
125
110
110
125
125
125
125
See Legend and Notes on page 85.
81
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
20
59.0
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
6.5
208
187 229 33.3 239 33.3 239 33.3 239 33.3 239
4
25
75.0
(ea)
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
75.1
27
7.0
150.1
54
30
88.0
7.0
—
—
23.6
7.0
75.1
27
7.0
150.1
54
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
20
54.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
6.6
230
207 253 33.3 239 33.3 239 33.3 239 33.3 239
4
25
68.0
(ea)
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
7.0
—
—
—
7.0
86.6
36
7.0
173.2
72
30
80.0
7.0
—
—
23.6
7.0
86.6
36
7.0
173.2
72
050
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
20
27.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
36
43.3
—
3.5
3.5
86.6
72
3.3
460
414 508 17.9 125 17.9 125 17.9 125 17.9 125
4
25
34.0
(ea)
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
3.5
—
—
—
3.5
43.3
36
3.5
86.6
72
30
40.0
3.5
—
—
12.6
3.5
43.3
36
3.5
86.6
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
20
22.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
2.6
575
518 632 12.8
4
25
27.0
80 12.8
80 12.8
80 12.8 80
(ea)
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
2.5
—
—
—
2.5
34.6
36
2.5
69.3
72
30
32.0
2.5
—
—
9.6
2.5
34.6
36
2.5
69.3
72
See Legend and Notes on page 85.
82
POWER SUPPLY
MCA
MOCP*
240.5
240.5
240.5
264.1
264.1
264.1
259.7
259.7
259.7
283.3
283.3
283.3
276.2
276.2
276.2
299.8
299.8
299.8
234.1
234.1
249.5
257.7
257.7
279.0
251.6
251.6
267.0
275.2
275.2
296.5
266.6
266.6
282.0
290.2
290.2
311.5
122.1
122.1
124.7
134.7
134.7
140.5
130.8
130.8
133.5
143.4
143.4
149.2
138.3
138.3
141.0
150.9
150.9
156.7
91.6
91.6
99.9
101.2
101.2
111.9
97.9
97.9
106.2
107.5
107.5
118.2
104.1
104.1
112.4
113.7
113.7
124.4
250
250
250
300
300
300
300
300
300
350
350
350
350
350
350
350
350
350
250
250
300
300
300
300
300
300
300
300
300
350
300
300
350
350
350
350
125
125
150
150
150
150
150
150
150
175
175
175
175
175
175
175
175
175
110
110
110
110
110
125
110
110
125
125
125
125
125
125
125
125
125
150
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
3 PH, 60 Hz
FLA
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
112.6
41
7.0
225.2
81
25
75.0
7.0
—
—
35.4
7.0
112.6
41
7.0
225.2
81
7.0
—
—
—
7.0
112.6
41
7.0
225.2
81
5.5
208
187 229 51.3 300 51.3 300 51.3 300 51.3 300
4
30
88.0
(ea)
7.0
—
—
35.4
7.0
112.6
41
7.0
225.2
81
7.0
—
—
—
7.0
112.6
41
7.0
225.2
81
40
114.0
7.0
—
—
35.4
7.0
112.6
41
7.0
225.2
81
7.0
—
—
—
7.0
129.9
54
7.0
259.8
108
25
68.0
7.0
—
—
35.4
7.0
129.9
54
7.0
259.8
108
7.0
—
—
—
7.0
129.9
54
7.0
259.8
108
5.8
230
207 253 51.3 300 51.3 300 51.3 300 51.3 300
4
30
80.0
(ea)
7.0
—
—
35.4
7.0
129.9
54
7.0
259.8
108
7.0
—
—
—
7.0
129.9
54
7.0
259.8
108
40
104.0
7.0
—
—
35.4
7.0
129.9
54
7.0
259.8
108
060
(MCHX)
3.5
—
—
—
3.5
65.0
54
3.5
129.9
108
25
34.0
3.5
—
—
18.9
3.5
65.0
54
3.5
129.9
108
—
—
3.5
3.5
65.0
54
—
3.5
129.9
108
2.9
460
414 508 22.4 150 22.4 150 22.4 150 22.4 150
4
30
40.0
(ea)
3.5
—
—
18.9
3.5
65.0
54
3.5
129.9
108
3.5
—
—
—
3.5
65.0
54
3.5
129.9
108
40
52.0
3.5
—
—
18.9
3.5
65.0
54
3.5
129.9
108
2.5
—
—
—
2.5
65.0
54
2.5
129.9
108
25
27.0
2.5
—
—
14.4
2.5
65.0
54
2.5
129.9
108
2.5
—
—
—
2.5
65.0
54
2.5
129.9
108
2.3
30
32.0
575
518 632 19.9 109 19.9 190 19.9 109 19.9 109
4
(ea)
2.5
—
—
14.4
2.5
65.0
54
2.5
129.9
108
2.5
—
—
—
2.5
65.0
54
2.5
129.9
108
40
41.0
2.5
—
—
14.4
2.5
65.0
54
2.5
129.9
108
UNIT
SIZE
50A
POWER SUPPLY
MCA
MOCP*
327.7
327.7
327.7
363.1
363.1
371.7
344.2
344.2
344.2
379.6
379.6
388.2
376.7
376.7
376.7
412.1
412.1
420.7
320.4
320.4
353.6
355.8
355.8
397.8
335.4
335.4
368.6
370.8
370.8
412.8
365.4
365.4
398.6
400.8
400.8
442.8
147.2
147.2
176.8
166.1
166.1
200.4
154.7
154.7
184.3
173.6
173.6
207.9
169.7
169.7
199.3
188.6
188.6
222.9
125.1
125.1
140.8
139.5
139.5
158.8
131.3
131.3
147.0
145.7
145.7
165.0
142.6
142.6
158.3
157.0
157.0
176.3
400
400
400
400
400
400
400
400
400
450
450
450
450
450
450
500
500
500
350
350
400
400
400
450
400
400
400
450
450
450
450
450
500
500
500
500
175
175
200
200
200
225
175
175
200
200
200
225
200
200
250
225
225
250
150
150
150
150
150
175
150
150
175
175
175
175
175
175
175
175
175
200
See Legend and Notes on page 85.
83
Electrical data (cont)
50A2,A3,A4,A5 UNITS WITH CONVENIENCE OUTLET (cont)
COMPRESSOR
VOLTAGE
CONDENSER EVAPORATOR POWER CONVENIENCE
OPTIONAL
UNIT
OUTLET
ELECTRIC HEAT
VOLTAGE RANGE Cir A, No. 1 Cir A, No. 2 Cir B, No. 1 Cir B, No. 2 FAN MOTOR FAN MOTOR EXHAUST
SIZE
3 PH, 60 Hz
FLA
50A
Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty
FLA
Hp
FLA
FLA
FLA
kW
(total)
7.0
—
—
—
7.0
112.6
41
7.0
225.2
81
25
74.8
7.0
—
—
35.4
7.0
112.6
41
7.0
225.2
81
7.0
—
—
—
7.0
112.6
41
7.0
225.2
81
6.5
208
187 229 51.3 300 51.3 300 51.3 300 51.3 300
6
30
88.0
(ea)
7.0
—
—
35.4
7.0
112.6
41
7.0
225.2
81
7.0
—
—
—
7.0
112.6
41
7.0
225.2
81
40
114.0
7.0
—
—
35.4
7.0
112.6
41
7.0
225.2
81
7.0
—
—
—
7.0
129.9
54
7.0
259.8
108
25
68.0
7.0
—
—
35.4
7.0
129.9
54
7.0
259.8
108
7.0
—
—
—
7.0
129.9
54
7.0
259.8
108
6.6
230
207 253 51.3 300 51.3 300 51.3 300 51.3 300
6
30
80.0
(ea)
7.0
—
—
35.4
7.0
129.9
54
7.0
259.8
108
7.0
—
—
—
7.0
129.9
54
7.0
259.8
108
40
104.0
7.0
—
—
35.4
7.0
129.9
54
7.0
259.8
108
060
(RTPF)
3.5
—
—
—
3.5
65.0
54
3.5
129.9
108
25
34.0
3.5
—
—
18.9
3.5
65.0
54
3.5
129.9
108
—
—
3.5
3.5
65.0
54
—
3.5
129.9
108
3.3
460
414 508 22.4 150 22.4 150 22.4 150 22.4 150
6
30
40.0
(ea)
3.5
—
—
18.9
3.5
65.0
54
3.5
129.9
108
3.5
—
—
—
3.5
65.0
54
3.5
129.9
108
40
52.0
3.5
—
—
18.9
3.5
65.0
54
3.5
129.9
108
2.5
—
—
—
2.5
52.0
54
2.5
103.9
108
25
27.0
2.5
—
—
14.4
2.5
52.0
54
2.5
103.9
108
2.5
—
—
—
2.5
52.0
54
2.5
103.9
108
2.6
575
518 632 19.9 109 19.9 190 19.9 109 19.9 109
6
30
32.0
(ea)
2.5
—
—
14.4
2.5
52.0
54
2.5
103.9
108
2.5
—
—
—
2.5
52.0
54
2.5
103.9
108
40
41.0
2.5
—
—
14.4
2.5
52.0
54
2.5
103.9
108
See Legend and Notes on page 85.
84
POWER SUPPLY
MCA
MOCP*
344.7
344.7
344.7
380.1
380.1
380.7
361.2
361.2
361.2
396.6
396.6
396.6
393.7
393.7
393.7
429.1
429.1
429.1
336.8
336.8
353.6
372.2
372.2
397.8
351.8
351.8
368.6
387.2
387.2
412.8
381.8
381.8
398.6
417.2
417.2
442.8
155.4
155.4
176.8
174.3
174.3
200.4
162.9
162.9
184.3
181.8
181.8
207.9
177.9
177.9
199.3
196.8
196.8
222.9
131.5
131.5
140.8
145.9
145.9
158.8
137.7
137.7
147.0
152.1
152.1
165.0
149.0
149.0
158.3
163.4
163.4
176.3
400
400
400
450
450
450
400
400
400
450
450
450
500
500
500
500
500
500
400
400
400
400
400
450
400
400
400
450
450
450
450
450
500
500
500
500
175
175
200
200
200
225
200
200
200
200
200
225
225
225
250
225
225
250
150
150
150
150
150
175
150
150
175
175
175
175
175
175
175
200
200
200
LEGEND AND NOTES FOR ELECTRICAL DATA TABLES
FLA
HACR
LRA
MCA
MCHX
MOCP
NEC
RLA
RTPF
—
—
—
—
—
—
—
—
—
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Locked Rotor Amps
Minimum Circuit Amps
Microchannel
Maximum Overcurrent Protection
National Electrical Code
Rated Load Amps
Round Tube Plate Fin
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
*Fuse or HACR circuit breaker.
1371
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent voltage imbalance.
7
% Voltage Imbalance = 100 x
457
=
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the
unit shall be fuse or HACR breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than
2%. Use the following formula to determine the percent voltage imbalance.
Controls
Control components
The 48/50A Series rooftops use the ComfortLink™ control
system that has been developed for use in Carrier Commercial equipment. The control system monitors all operating
conditions in the rooftop unit as well as controlling the compressors, economizers, fans, heat and other devices. It also
has the capability of communicating with the Carrier Comfort Network® devices using the CCN protocol and other
popular protocols including BACnet, MODBUS, LonWorks,
etc.
The system uses a microprocessor and a series of boards,
each with inputs and outputs. A local network communications bus (LEN) ties all the boards together into a system and
enables the boards to communicate.
For the 48/50A Series, the control consists of the following key components:
Main base board (MBB) — The MBB is the center of
the ComfortLink control system. It contains the major portion of the operating software and controls the operation
of the unit. The MBB continuously monitors inputs and
outputs as well as data from the LEN and CCN communications channels. The MBB also controls 11 output relays.
A complete list of the MBB and system I/O are contained
in the table on page 86. The board is located in the main
control box.
Economizer control board (ECB1) — The ECB controls the economizer actuator. The ECB controls the economizer motor using a digital communications signal that also
provides operation and diagnostic data on the economizer
motor. The ECB also controls the operation of the power
exhaust motors and provides up to 6 stages of digitally
sequenced power exhaust. Exhaust sequencing can be
based on either the economizer motor position or the building pressure. On the A Series unit, the ECB board is
located in an auxiliary box located at the end of the unit
near the economizer motor. The board also contains a second LEN port than can be used with the handheld Navigator™ display.
Supply and building pressure control board (ECB2)
— The board, which is the same hardware as the ECB1, is
used to control the supply fan inverter on the VAV units. It
sends a 4 to 20 mA signal to the inverter based on a supply
duct pressure sensor connected to the board. The board
also accepts a signal from another pressure sensor that
monitors building pressure and controls the operation of
the optional modulating power exhaust system. This board
is located in the auxiliary control box.
CV staged gas heat board (SCB) — When the
optional staged gas heat is used, the SCB board will be
installed and control the operation of the gas valves. It also
provides additional sensors for monitoring of the supply air
temperature. This board is located in the gas heat section
of the unit.
Integrated gas controller (IGC) — One IGC is provided with each bank of gas heat exchangers. It controls
the direct spark ignition system and monitors the rollout
switch, limit switches, and induced-draft motor Hall Effect
sensor. It is equipped with an LED for diagnostics.
Controls expansion module (CEM) — The optional
expansion module is used to provide inputs for demand
limiting, remote set point and other optional inputs. It is
located in the main control box.
Compressor protection Cycle-LOC™ board (CS) —
This board monitors the status of the compressor by
sensing the current flow to the compressors and then
provides digital status signal to the MBB.
Scrolling marquee display — This device is the keypad
interface used to access the control information, read sensor values, test the unit, and monitor alarm status. The
marquee display is a 4-key, 4-character, 16-segment LED
(light-emitting diode) display. The display is very easy to
operate using 4 buttons and a group of 11 LED's that
indicate the following menu structures:
• Run Status
• Outputs
• Service Test
• Configuration
• Temperatures
• Timeclock
• Pressures
• Operating Modes
• Set Points
• Alarms
• Inputs
85
Controls (cont)
MAIN BASE BOARD (MBB) INPUTS AND OUTPUTS
POINT
NAME
INPUTS
GASFAN
FSD
G
W2
W1
Y2
Y1
CSB_A1
CSB_A2
CSB_B1
CSB_B2
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DIG1
DIG2
DIG3
DIG4
J6, 3-4
J6, 5-6
J7, 1-2
J7, 3-4
J7, 5-6
J7, 7-8
J7, 9-10
J9, 10-12
J9, 7-9
J9, 4-6
J9, 1-3
AN1
J8, 21-23
AN2
J8, 24-26
AN3
J8, 15-17
YAC Indoor Fan relay (fan request from YAC)
Fire Shutdown switch input
Thermostat ‘G’ input/Remote Occupied
Thermostat ‘W2’ input
Thermostat ‘W1’ input
Thermostat ‘Y2’ input
Thermostat ‘Y1’ input
Compressor A1 current sensor
Compressor A2 current sensor
Compressor B1 current sensor
Compressor B2 current sensor
Circuit A saturated
DP_A/SCTA
condensing pressure/temp
Circuit B saturated
DP_B/SCTB
condensing pressure/temp
Circuit A saturated
SP_A/SSTA
suction pressure/temp
Circuit B saturated
SP_B/SSTB
suction pressure/temp
RAT
Return air temperature
SA_TEMP
Supply air temperature
OAT
Outdoor air temperature
SPT
Space temperature (T55/56)
SPTO
Space temperature offset (T56)
IAQ,/IAQMINOV IAQ analog input
FLTS
Filter Status
OUTPUTS
CMPB2
Compressor B2
CMPB1
Compressor B1
CMPA2
Compressor A2
CMPA1
Compressor A1
CONDFANB
Condenser fan B
CONDFANA
Condenser fan A
HS2
Heat stage 2
HS1
Heat stage 1
HIR
Heat interlock relay
SF
Supply fan
ALRM
Alarm output relay
SIGNAL PIN(S)
PORT STATE
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 5vdc, 1 = 0vdc
0 = 5vdc, 1 = 0vdc
0 = 5vdc, 1 = 0vdc
0 = 5vdc, 1 = 0vdc
AN4
J8, 18-20
AN5
AN6
AN7
AN8
AN9
AN10
AN11
J8, 9-10
J8, 11-12
J8, 13-14
J8, 1-2
J8, 3-4
J8, 5-6
J8, 7-8
4
6
2
4
6
8
10
10=5v, 11=Vin, 12=GND
7=5v, 8=Vin, 9=GND
4=5v, 5=Vin, 6 =GND
1=5v, 2=Vin, 3=GND
21=5v, 22=Vin, 23=GND
(thermistor 21-22)
24=5v, 25=Vin, 26=GND
(thermistor 24-25)
15=5v, 16=Vin, 17=GND
(thermistor 15-16)
18=5v, 19=Vin, 20=GND
(thermistor 18-20)
9
11
13
1
3
5
7
RLY 1
RLY 2
RLY 3
RLY 4
RLY 5
RLY 6
RLY7
RLY 8
RLY 9
RLY 10
RLY 11
J10, 20-21
J10, 22-23
J10, 24-25
J10, 26-27
J10, 10-11
J10, 12-13
J10, 14-16
J10, 17-19
J10, 4-6
J10, 7-9
J10, 1-3
20 = RLY1A (=RLY2A), 21 = RLY1B
22 = RLY2A (=RLY1A), 23 = RLY2B
24 = RLY3A (=RLY4A), 25 = RLY3B
26 = RLY4A (=RLY3A), 27 = RLY4B
10 = RLY5A (=RLY6A), 11 = RLY5B
12 = RLY6A (=RLY5A), 13 = RLY6B
14 = 15 = RLY7A, 16 = RLY7B
17 = 18 = RLY8A, 19 = RLY8B
4 = 5 = RLY9A, 6 = RLY9B
7 = 8 = RLY10A, 9 = RLY10B
1 = 2 = RLY11A, 3 = RLY11B
(0-5vdc, thermistor, ohms)
(0-5vdc, thermistor, ohms)
(0-5vdc, thermistor, ohms)
(0-5vdc, thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
1 = Closes RLY1A/RLY1B
1 = Closes RLY2A/RLY2B
1 = Closes RLY3A/RLY3B
1 = Closes RLY4A/RLY4B
1 = Closes RLY5A/RLY5B
1 = Closes RLY6A/RLY6B
1 = Closes RLY7A/RLY7B
1 = Closes RLY8A/RLY8B
1 = Closes RLY9A/RLY9B
1 = Closes RLY10A/RLY10B
1 = Closes RLY11A/RLY11B
LEGEND
IAQ — Indoor-Air Quality
YAC — Gas Heat Unit
CONTROLS EXPANSION MODULE (CEM) INPUTS AND OUTPUTS
POINT
NAME
INPUTS
SFS
DMD_SW1
DMD_SW2/DHDISCIN
PRES
EVAC
PURG
IAQIN
Supply Fan Status switch
Demand Limit - SW1
Demand Limit - SW2 / Dehumidification Switch Input
Pressurization
Evacuation
Purge
Indoor Air Quality Switch
DMDLMTMA
EDTRESMA
OAQ
SPRESET
CEM_10K1/CEM_4201
CEM_10K2/CEM_4202
CEM_10K3/CEM_4203
CEM_10K4/CEM_4204
4-20mA Demand Limit
4-20mA Evaporator Discharge SP Reset
Outside Air CO2 Sensor
SP Reset milliamps
CEM AN1 10k temp J5,1-2/CEM AN1 4-20 ma J5,1-2
CEM AN2 10k temp J5,3-4/CEM AN2 4-20 ma J5,3-4
CEM AN3 10k temp J5,5-6/CEM AN3 4-20 ma J5,5-6
CEM AN4 10k temp J5,7-8/CEM AN4 4-20 ma J5,7-8
86
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S)
PORT STATE
DI 1
DI 2
DI 3
DI 4
DI 5
DI 6
DI 7
AN7
AN8
AN9
AN10
AN10
AN1
AN2
AN3
AN4
AN5
AN6
J7, 1-2
J7, 3-4
J7, 5-6
J7, 7-8
J7, 9-10
J7, 11-12
J7, 13-14
J6, 1-3
J6, 4-6
J6, 7-9
J6, 10-12
J6, 10-12
J5, 1-2
J5, 3-4
J5, 5-6
J5, 7-8
J5, 9-10
J5, 11-12
2
4
6
8
10
12
14
2 (1 = loop power)
5 (4 = loop power)
8 (7 = loop power)
11 (10 = loop power)
11 (10 = loop power)
1
3
5
7
9
11
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
0 = 24vac, 1= 0vac
(0-20mA input)
(0-20mA input)
(0-20mA input)
(0-20mA input)
(0-20mA input)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
ECONOMIZER CONTROL BOARD (ECB1) INPUTS AND OUTPUTS
POINT
NAME
INPUTS
RMTIN
ECONENBL,
ECOORIDE
RARH
OARH
OUTPUTS
ECB1_AO1
ECONOCMD
PE_A
PE_B
PE_C
ECON_PWR
I/O POINT
NAME
POINT DESCRIPTION
PLUG AND PIN
REFERENCE
SIGNAL PIN(S)
PORT STATE
Remote occupancy
DI1
J4, 1-2
2
24VAC = 1, 0VAC = 0
Economizer enable
DI2
J4, 3-4
4
24VAC = 1, 0VAC = 0
Return air relative humidity
Outdoor air relative humidity
AN1
AN2
J5, 1-3
J5, 4-6
1=24VDC, 2=0-20mA in, 3=GND
4=24VDC, 5=0-20mA in, 6=GND
0-20mA
0-20mA
ECB1, analog output 1
Economizer actuator
(digital control)
Power Exhaust stage A
Power Exhaust stage B
Power Exhaust stage C
Economizer Power
AO1
J9, 1-2
1=0-20mA, 2=GND
0-20mA OUT
PP/MP
J7, 1-3
1=PP/MP Data, 2=24VAC, 3=GND
Belimo PP/MP Protocol
RLY1
RLY 2
RLY 3
RLY 6
J8, 1-3
J8, 4-6
J8, 7-9
J8, 16-18
1 = 2 = RLY1A, 3 = RLY1B
4 =5 = RLY2A, 6 = RLY2B
7 = 8 = RLY3A, 9 = RLY3B
16 = 17 = RLY6A, 18 = RLY6B
1 = Closes RLY1A/RLY1B
1 = Closes RLY2A/RLY2B
1 = Closes RLY3A/RLY3B
1 = Closes RLY6A/RLY6B
VAV CONTROL BOARD (ECB2) INPUTS AND OUTPUTS
POINT
NAME
INPUTS
BP
SP
OUTPUTS
SFAN_VFD
MLV
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S)
PORT STATE
DI1
DI2
AN1
AN2
J4, 1-2
J4, 3-4
J5, 1-3
J5, 4-6
2
4
1=24VDC, 2=0-20mA in, 3=GND
4=24VDC, 5=0-20mA in, 6=GND
24VAC = 1, 0VAC = 0
24VAC = 1, 0VAC = 0
0-20mA
0-20mA
AO1
PP/MP
RLY1
RLY 2
RLY 3
RLY 6
J9, 1-2
J7, 1-3
J8, 1-3
J8, 4-6
J8, 7-9
J8, 16-18
1=0-20mA, 2=GND
1=PP/MP Data, 2=24VAC, 3=GND
1 = 2 = RLY1A, 3 = RLY1B
4 =5 = RLY2A, 6 = RLY2B
7 = 8 = RLY3A, 9 = RLY3B
16 = 17 = RLY6A, 18 = RLY6B
0-20mA OUT
Belimo PP/MP Protocol
1 = Closes RLY1A/RLY1B
1 = Closes RLY2A/RLY2B
1 = Closes RLY3A/RLY3B
1 = Closes RLY6A/RLY6B
Building static pressure
Supply Duct static pressure
Supply Fan Inverter speed
Minimum load valve
STAGED GAS HEAT BOARD (SCB) INPUTS AND OUTPUTS
POINT
NAME
INPUTS
POINT DESCRIPTION
LAT1SGAS Leaving air temperature 1
LAT2SGAS Leaving air temperature 2
LAT3SGAS Leaving air temperature 3
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S)
PORT STATE
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
J5, 1-3
J5, 4-6
J5, 7-9
J5, 10-12
J5, 13-15
J6, 1-3
J6, 4-6
J6, 7-9
J7, 1-2
J7, 3-4
1=5v, 2=Vin, 3=GND (thermistor 1-2)
4=5v, 5=Vin, 6=GND (thermistor 4-5)
7=5v, 8=Vin, 9=GND (thermistor 7-8)
10=5v, 11=Vin, 12=GND (thermistor 10-11)
13=5v, 14=Vin, 15=GND (thermistor 13-14)
1=5v, 2=Vin, 3=GND (thermistor 1-2)
4=5v, 5=Vin, 6=GND (thermistor 4-5)
7=5v, 8=Vin, 9=GND (thermistor 7-8)
1
3
(0-5VDC, thermistor, ohms)
(0-5VDC, thermistor, ohms)
(0-5VDC, thermistor, ohms)
(0-5VDC, thermistor, ohms)
(0-5VDC, thermistor, ohms)
(0-5VDC, thermistor, ohms)
(0-5VDC, thermistor, ohms)
(0-5VDC, thermistor, ohms)
(thermistor, ohms)
(thermistor, ohms)
AO1
AO2
RLY1
RLY 2
RLY 3
RLY 4
RLY 5
J8, 1-2
J8, 3-4
J9, 1-3
J9, 4-6
J9, 7-9
J9, 10-12
J9, 13-15
1=0-20mA, 2=GND
3=0-20mA, 4=GND
1 = 2 = RLY1A, 3 = RLY1B
4 =5 = RLY2A, 6 = RLY2B
7 = 8 = RLY3A, 9 = RLY3B
10 = 11 = RLY4A, 12 = RLY4B
13 = 14 = RLY5A, 15 = RLY5B
0-20mA OUT
0-20mA OUT
1 = Closes RLY1A/RLY1B
1 = Closes RLY2A/RLY2B
1 = Closes RLY3A/RLY3B
1 = Closes RLY4A/RLY4B
1 = Closes RLY5A/RLY5B
OUTPUTS
HS3
HS4
HS5
HS6
Heat Stage 3
Heat Stage 4
Heat Stage 5
Heat Stage 6
87
Controls (cont)
INPUT/OUTPUT CHANNEL DESIGNATIONS — FIELD CONNECTION TERMINAL STRIPS
TERMINAL
TERMINAL
DESCRIPTION
BOARD
NO.
TB-1 - POWER CONNECTION OR DISCONNECT (in Main Control Box)
11
L1 power supply
TB1
12
L2 power supply
13
L3 power supply
TB-2 - GROUND (in Main Control Box)
TB2
1
Neutral Power
TB-3 - CCN COMMUNICATIONS (HY84HA096) (in Main Control Box)
1
LEN +
2
LEN C
3
LEN –
4
24 VAC
TB3
5
CCN +
6
CCN C
7
CCN –
8
Grd
TB-4 - THEROMSTAT CONNECTIONS (HY84HA090) (in Main Control Box)
1
Thermostat R
2
Thermostat Y1
3
Thermostat Y2
4
Thermostat W1
TB4
5
Thermostat W2
6
Thermostat G
7
Thermostat C
8
Thermostat X (Alarm Contact)
TB-5 - FIELD CONNECTIONS (HY84HA101) (in Main Control Box)
1
VAV Heater Interlock Relay, Ground
2
VAV Heater Interlock Relay, 24 VAC
3
T55/T56 10 K Thermistor
4
T55/T56 10 K Thermistor
5
T56 Set Point Adjustment (100 K ohm)
6
Indoor Air IAQ Remote Sensor/Remote Pot/Remote 4-20 mA
7
Indoor Air IAQ Remote Sensor/Remote Pot/Remote 4-20 mA
8
Smoke Detector Remote Alarm
TB5
9
Smoke Detector Remote Alarm
10
Fire Shutdown
11
Fire Shutdown
12
Fire Control*
13
Fire Pressurization*
14
Fire Evacuation*
15
Fire Smoke Purge*
16
Not Used
TB-6 - FIELD CONNECTIONS (HY84HA101) (in Main Control Box)
1
Remote Occupied/Economizer Enable 24 VAC
2
Remote Economizer Contact
3
Remote Occupied Contact
4
Demand Limit Contacts Common*
5
Demand Limit SW1*
6
Demand Limit SW2 / Dehumidification Switch*
7
Demand Limit 4-20 mA*
8
Demand Limit 4-20 mA*
TB6
9
Remote Supply Air Setpoint 4-20 mA*
10
Remote Supply Air Setpoint 4-20 mA*
11
Outdoor Air IAQ 4-20 mA*
12
Outdoor Air IAQ 4-20 mA*
13
IAQ Remote Switch*
14
IAQ Remote Switch*
15
Supply Fan Status Switch*
16
Supply Fan Status Switch*
TB-7 - ELECTRIC HEAT POWER BLOCK (in Electric Heat section)
1
L1 Power Supply
TB7
2
L2 Power Supply
3
L3 Power Supply
* Requires optional Controls Expansion Module (CEM).
88
TYPE
208-230/460/575/380/-3-60
208-230/460/575/380/-3-60
208-230/460/575/380/-3-60
5 VDC, logic
5 VDC, logic
5 VDC, logic
24 VAC
5 VDC, logic
5 VDC, logic
5 VDC, logic
ground
24 VAC Power
24 VAC Input
24 VAC Input
24 VAC Input
24 VAC Input
24 VAC Input
24 VAC Common
24 VAC Output
Dry Contact, Max 1 Amp
Dry Contact, Max 1 Amp
Thermistor Input
Thermistor Input
Thermistor Input
4-20 mA, ext. powered w/res or 0-5 VDC, +
4-20 mA, ext. powered w/res or 0-5 VDC, –
external contacts
external contacts
24 VAC Power
24 VAC Input
24 VAC Power
24 VAC Input
24 VAC Input
24 VAC Input
—
24 VAC Power
24 VAC Input
24 VAC Input
24 VAC Power
24 VAC Input
24 VAC Input
externally powered 4-20 mA
externally powered 4-20 mA
externally powered 4-20 mA
externally powered 4-20 mA
externally powered 4-20 mA
externally powered 4-20 mA
24 VAC Power
24 VAC Input
24 VAC Power
24 VAC Input
208-230/460/575/380/-3-60, 400-3-50
208-230/460/575/380/-3-60, 400-3-50
208-230/460/575/380/-3-60, 400-3-50
Through the display, inputs and outputs can be checked
for their value or status. Because the unit is equipped with
suction pressure transducers and discharge saturation
temperature sensors it can also display pressures typically
obtained from gages. The control includes a full alarm
history which can be accessed from the display. Through
the display, a built-in test routine can be used at start-up
commission and during maintenance inspections to
help diagnose operational problems with the unit.
Cooling control options
When mechanical cooling is required, the A Series
ComfortLink™ controls have the capability to control the
staging of the compressors in several different ways. Three
scroll compressors are used on size 020 to 027 units and
four scroll compressors are used on sizes 030 to 060. In
addition, the ComfortLink controls support the use of an
optional minimum load hot gas bypass valve (MLV) with
the Multiple Adaptive Demand and VAV control
sequences. The MLV is directly controlled by the ComfortLink controls and provides an additional stage of
capacity as well as low load coil freeze protection. The
control also integrates the use of an economizer with the
use of mechanical cooling to allow for the greatest use of
free cooling. When both mechanical cooling and the economizer are being used, the control will use the economizer
to provide better temperature control and limit the cycling
of the compressors. The control also checks on various
other operation parameters in the units to make sure that
safety limits are not exceeded and the compressors are reliably operated.
The A Series ComfortLink controls offer two basic control approaches to mechanical cooling: constant volume
with 2 stages of cooling and VAV with multiple stages of
cooling. In addition to these traditional methods of control,
the A Series ComfortLink controls offer the ability to run
multiple stages of cooling in constant volume operation by
controlling the unit to either a low or high cool supply air
set point based on either a space temperature sensor or
2-stage thermostat input.
CONTROL TYPE
Application Demand
Source
RAT or
A3,A5
VAV
SPT
SPT or
A2,A4
CV
T-STAT
Unit
COOLING CONTROL
METHOD
Multiple Stage EDT
Multiple Adaptive Demand or
2-Stage Demand
Control type — The control type determines the selection of the type of cooling control as well as the technique
for selecting a cooling mode. The control types are:
VAV-RAT and VAV-SPT — Both of these configurations
refer to standard VAV operation. If the control is occupied,
the supply fan is run continuously and return-air temperature will be used in the determination of the selection of the
cooling mode. VAV-SPT differs from VAV-RAT only in that
during the unoccupied period, space temperature will be
used instead of return-air temperature to start the fan for
ten minutes before the return-air temperature is allowed to
call out any mode.
CV TSTAT-Multiple Stage — This configuration will force
the control to monitor the thermostat inputs (Y1,Y2) to
make a determination of mode. Unlike traditional 2-stage
thermostat control, the unit is allowed to use multiple
stages of cooling control and perform VAV-style capacity
control.
CV TSTAT-2 Stage — This configuration will force the
control to monitor the thermostat inputs (Y1,Y2) to make
a determination of mode.
CV SPT-Multiple Stage — This configuration will force the
control to monitor a space temperature sensor to make a
determination of mode. The unit is allowed to use multiple
stages of cooling control and perform VAV-style capacity
control.
CV SPT-2 Stage — This configuration will force the control to monitor the space temperature sensor to make a
determination of mode and allow two stages of cooling.
Cooling control method — Three different cooling control methods are used to step through the available stages
of capacity. Depending on the unit size, cooling control
method and presence of an MLV, this may range from 2
up to 5 stages of capacity control. These methods are:
Multiple Stage Evaporator Discharge Temperature (EDT)
— The capacity of the economizer and compressors are
controlled based on the evaporator air discharge temperature and supply air temperature set point. This control
method uses an adaptive PID (proportional, integral, derivitive) algorithm to calculate the estimated change in supplyair temperature before engaging or disengaging the next
stage of cooling. The algorithm compensates for varying
conditions, including changing flow rates across the evaporator coil, to provide better overall control of compressor
staging.
Multiple Adaptive Demand — This control method will
base the capacity of the economizer and compressors on
the evaporator air discharge temperature and one of two
supply air temperature set points. The control will be able
to call out a LOW COOL or a HIGH COOL mode and
maintain a low or high cool supply air set point. The unit
will use either the input from a conventional thermostat to
turn the Y1, Y2 signals into a high and low demand signal,
or with a space temperature sensor use a differential from
set point to determine the mode. Once the mode has been
established the control uses the same algorithm as with
VAV control.
Two-Stage Demand — The unit will operate with integrated economizer and 2 stages of compressor capacity
control.
Integrated economizer — For each of the above modes
of operation all mechanical cooling will first be delayed
while the unit attempts to use the economizer for free cooling. Once the economizer is at full capacity, the control will
then supplement the free cooling with as much mechanical
cooling as required. To prevent any rapid changes in cooling, the control will also use the economizer to trim the
cooling supplied.
89
Controls (cont)
Heating control options
When heating is required the A Series units can be provided with 2-stage electric heat, 2-stage gas heat or multiple-stage gas heat. Depending on unit size and heating
capacity the multiple-stage option may have between 5
and 11 stages of heating capacity control. The A Series
ComfortLink™ controls have the capability to control the
heating capacity based on input from a 2-stage mechanical
thermostat, a space temperature sensor, or on VAV units
by the return air temperature sensor. With CV units the
heating mode (off, low or high) will be enabled based on
W1 and W2 thermostat inputs, or when using a space temperature sensor the differential from heating set point will
be used. Heating with VAV units will be enabled based on
the return-air temperature or the space temperature, but
once enabled control will be based on the return-air temperature. Variable air volume terminals will be commanded
open to the heating cfm through linkage or the heat interlock relay. The A Series ComfortLink™ controls will use
one of the following control methods:
Two-stage control — The unit will operate in LOW
HEAT or HIGH HEAT mode as determined by the demand
inputs. In the LOW HEAT mode if the temperature sensed
by the evaporator discharge temperature sensor is below
50 F, the unit will automatically go into a HIGH HEAT
mode.
Multiple-stage control — When the unit is in a LOW
HEAT mode the algorithm calculates the desired heat
capacity based on set point and supply-air temperature.
The staged gas control logic will stage the heating capacity
to match the calculated demand. When the unit is in a
HIGH HEAT mode all stages of heat will be activated.
Staged gas heat can also be used in a TEMPERING mode.
This mode is enabled during a VENTILATION, LOW
COOL or HIGH COOL mode when the economizer dampers are at their minimum ventilation position and the mixedair temperature is below the supply air set point. Tempering
can also be used during a preoccupancy purge to prevent
low temperature air from being delivered to the space.
Economizer and IAQ options
The controls have been designed to support the requirements of indoor air quality control through the use of
outside air. Units can either be equipped with an outside air
adjustable, self-closing economizer or a fully modulating,
gear driven economizer with no linkages. The economizer
can be configured for a full modulation mode or 3-position
mode of operation. The control includes logic for a minimum ventilation position and different set points for
occupied and unoccupied minimum position set points.
This control also has logic built in to calibrate the economizer position to the actual percentage of outside air
introduced. During periods when the compressors are not
being used the control will use the RAT, SAT and OAT to
calibrate the economizer. This will allow for setting the
outside air actual percentage and not just the percent
damper position.
90
The use of the economizer will depend on the mode of
change selected. This control integrates the changeover
directly into the control. Five types of changeover are
available:
• Outdoor air dry bulb
• Differential dry bulb
• Outdoor air enthalpy
• Differential enthalpy
• Outdoor air dew point
The units are provided with an outdoor air and return air
temperature sensor so the first two changeover methods
are available as standard. To use the enthalpy changeover
options the control supports the addition of highly reliable,
electronic humidity sensors. The humidity sensor input is
then used with the dry bulb sensors to calculate the
enthalpy. For outdoor enthalpy changeover the control
also has the ASHRAE 90.1 A, B, C, D economizer
changeover curves built into the software.
When operating with outside air economizers, large
amounts of air can be introduced into the building and a
means must be provided for building pressure relief. The
48/50A Series control supports the following three types
of building pressure control:
• Relief Dampers — Can be used on low return duct
static applications
• Non-Modulating Two-Stage Power Exhaust — The unit
can be equipped with multiple power exhaust fans, 4 on
sizes 020-050 and 6 on size 060. The software controls
the power exhaust stages based on the economizer
position (percent open).
• Modulating Power Exhaust — Both the VAV and CV
units can be equipped with power exhaust fans that are
controlled by a building pressure sensor that is
connected to the ComfortLink controller. The fans are
in groups which allow for 4 stages on sizes 020-050
and 6 stages on size 060.
The units are capable of using either 2-in. or optional
4-in. pleated filters and can have an optional filter pressure
drop switch to warn of dirty filter conditions.
The indoor air quality (IAQ) function provides a demandbased control for ventilation air quantity, by providing a
modulating outside air damper position that is proportional
to the space CO2 level. The ventilation damper position is
varied between a minimum ventilation level (based on internal sources of contaminants and CO2 levels other than the
effect of people) and the maximum design ventilation level
(determined at maximum populated status in the building).
During a less-than-fully populated space period, the CO2
level will be lower than that at full-load design condition
and will require less ventilation air. Reduced quantities of
ventilation air will result in reduced operating costs. Space
CO2 levels are monitored and compared to user-configured
set points. Accessory CO2 sensor for space (or return duct
mounting) is required. The IAQ routine can be enhanced
by also installing a sensor for outdoor air quality.
During the occupied period, in the absence of a demand
for cooling using outside air, if CO2 levels are below the set
point for the minimum ventilation level, the outside-air
damper will open to the minimum ventilation level damper
position set point. The minimum damper position will be
maintained as long as the CO2 level remains below the set
point.
When the space CO2 level exceeds set point for the
minimum ventilation level condition, the ComfortLink
controls will begin to open the outside air damper position
to admit more ventilation air and remove the additional
contaminants. As the space CO2 level approaches the set
point for maximum design ventilation level condition, the
outside air damper position will reach the maximum ventilation level damper position set point limit. Damper
position will be modulated in a directly proportional
relationship between these two CO2 set point limits and
their corresponding damper position limits.
In most applications a fixed reference value can be set for
the outdoor air quality level, but the control also supports
the addition of an outdoor air quality sensor that will be
compared to the indoor or return IAQ sensor. If an OAQ
(outdoor air quality) sensor is connected, the demand set
point levels will be adjusted automatically as the outdoor
CO2 levels vary. Also, if the outdoor CO2 level exceeds a
user-configured maximum limit value, then outside air
damper position will be limited to the minimum ventilation
damper set point value. The control can also receive these
signals through the CCN system.
The IAQ and OAQ measurement levels are displayed by
the ComfortLink™ scrolling marquee in parts per million
(ppm).
Fire and smoke controls interface — The unit can be
equipped with an optional return air smoke detector. The
smoke detector is wired to stop the unit and send a
message to a remote alarm system if a fault condition is
detected. If the controls expansion module is added, the
control will support smoke control modes including evacuation, smoke purge, and pressurization.
Demand limiting — The control supports demand limiting using one or two fixed capacity limits initiated by discrete input switches or a variable capacity limit function
based on an analog input signal. On CCN systems this can
be done through the network, or for non-CCN network
jobs this can be done by adding the controls expansion
module.
Diagnostics
The ComfortLink controls have fully integrated all controls
and sensors into a common control system. The control
monitors these inputs as well as many of the routines to
provide advanced diagnostics and prognostics. These
include adaptive logic to allow the unit to continue to
operate in a reduced output mode and automatic resets
where applicable. The last 10 alarms and alerts are stored
in memory and can be accessed through the display. The
alarms can also be monitored through the Carrier Comfort
Network® connection or building automation system. The
unit also supports the use of the hand held Navigator™ display which can be plugged in at the main control box and
auxiliary control box at the opposite end of the unit.
Some of the diagnostics that are included are:
• Monitoring of all sensors
• Suction pressure transducers to provide compressor
protection and coil freeze protection
• Monitoring of the economizer motor using a digitally
controlled motor
• Monitoring of compressor status using compressor
protection boards
• Adaptive logic for low supply-air temperatures
• Compressor lockout at low ambient conditions
• Storage of compressor run hours and starts
• Low refrigerant charge protection
• Compressor reverse rotation protection
Control interface
The ComfortLink controller can interface with the i-Vu®
Open Control System, a BACnet building automation system, or Carrier Comfort Network® devices. This will allow
for the use of all system control programs. These include:
• Network Service Tool
• System Pilot™ device
• Touch Pilot™ device
• i-Vu Open Control System software
• ComfortView™ software
• CCN Web software
• ComfortID™ system
Contact Carrier Controls Marketing for more
information.
The control can also provide interface with other energy
management systems with the addition of either the BACnet communication option, MODBUS Carrier translator or
the LonWorks Carrier translator.
Several contact connection points have been provided
in the main control box for interface to external controls
and systems. These are summarized in the Interface
Connection table. External controls use the following interface points:
• Start/Stop (On/Off) — Start/Stop is accomplished with
a contact closure between terminals 1 and 3 on TB6.
• Remote Economizer Enable — Enabling and disabling
of the economizer can be done by connecting a contact
closure to terminals 1 and 2 on TB6. The economizer
can be configured for a switch closure changeover for
3-position operation.
• VAV Heating Interlock — Interface with non-linkage
terminals can be done through TB5 terminal 1 and 2.
• Remote IAQ Inputs — External IAQ demand inputs can
be connected through terminals 6 and 7 on TB5.
• Smoke Detectors Alarm Output — Remote detector
alarm outputs can be connected through terminals 8
and 9 on TB5.
• Fire Shutdown — A remote fire shutdown signal can be
connected to 10 and 11 on TB5. The software can be
configured to shut the unit down on an open or closed
signal.
• Fire Pressurization — For a remote control of pressurization a contact closer can be connected to terminals
12 and 13 on TB5. In this mode the economizer
damper will be fully opened and the supply fan turned
on to pressurize the space.
91
Controls (cont)
• Fire Evacuation — For this mode a remote contact
closure can be connected to terminal 12 and 14 on
TB5. For remote evacuation of a space the outside-air
dampers will be opened and the power exhaust fans
turned on to evacuate the space of smoke.
• Fire Purge — For this mode external contacts can be
connected to terminals 12 and 15 on TB5. In this mode
the supply fan and return fans will be turned on with the
economizer at a full open position.
• Demand Limiting — For demand limiting the controls
expansion module must be used. Connections are provided on TB6 for switch input demand limiting and for
4 to 20 mA demand limit signals.
• Dehumidification — A discrete input is available on
TB6 to initiate the Dehumidification mode. This input is
shared with one of the demand limiting inputs and
requires the controls expansion module.
• Remote Supply Air Set Point — A remote supply air
temperature set point can be supported when the
controls expansion module is used. It can be connected
to terminals 11 and 12 on TB6.
• Outdoor Air IAQ Signal — If an external outdoor air
signal is being used then it can be connected to terminals 9 and 10 on TB6.
• IAQ Switch Input — If an external control will be
controlling IAQ then it can be connected as a contact
closure through terminals 13 and 14 on TB6.
Carrier can also support electronic interface to other systems using the following;
• MODBUS Carrier translator (read/write, provides CCN
to MODBUS remote terminal unit [RTU] protocol conversion)
• LonWorks Carrier translator (read/write, provides CCN
to LON FT-10A ANSI/EIA-709.1 protocol conversion)
Constant volume applications
The 48/50A2,A4 units are designed to operate in CV applications. The units are shipped as operable, stand-alone
units using either a standard (mechanical or electronic)
2-stage heat, 2-stage cool thermostat, or with an electronic
room temperature sensor and a timeclock to establish unit
start and stop times. With a standard thermostat (programmable is optional), heating and cooling operation is set by
space temperature. With a space sensor and field-supplied
timeclock, the machine will operate at default values unless
they are changed using appropriate input devices. The
space sensor monitors space temperature and may be
equipped with a timed override feature, which allows unit
operation during unoccupied periods. The space sensors
may be used in multiples of 4 or 9 to achieve space
temperature averaging. The use of a space sensor also
allows the unit to be turned on and off from a remote
signal or it can be programmed to use the time of day
scheduling that is built into the control.
92
INTERFACE CONNECTIONS
TB-3 — CCN COMMUNICATIONS (HY84HA096)
TB3 1 LEN +
2 LEN C
3 LEN –
4 24 VAC
5 CCN +
6 CCN c
7 CCN –
8 Grd
TB-4 — THERMOSTAT CONNECTIONS (HY84HA090)
TB4 1 Thermostat R
2 Thermostat Y1
3 Thermostat Y2
4 Thermostat W1
5 Thermostat W2
6 Thermostat G
7 Thermostat C
8 Thermostat X
TB-5 — FIELD CONNECTIONS (HY84HA101)
TB5 1 VAV Heater Interlock Relay, Ground
2 VAV Heater Interlock Relay, 24 VAC
3 T55/T56 10K Thermistor
4 T55/T56 10K Thermistor
5 T56 Set Point Adjustment (100 K ohm)
6 Indoor Air IAQ Remote Sensor/Remote Pot/Remote 4-20 mA
7 Indoor Air IAQ Remote Sensor/Remote Pot/Remote 4-20 mA
8 Smoke Detector Remote Alarm
9 Smoke Detector Remote Alarm
10 Fire Shutdown
11 Fire Shutdown
12 Fire Control Common*
13 Fire Pressurization*
14 Fire Evacuation*
15 Fire Smoke Purge*
16 Not Used
TB-6 — FIELD CONNECTIONS (HY84HA101)
TB6 1 Remote Occupied/Economizer Enable 24 VAC
2 Remote Occupied Contact
3 Remote Economizer Contact
4 Demand Limit Contacts Common*
5 Demand Limit Switch 1*
6 Demand Limit Switch 2/Dehumidify Switch*
7 Demand Limit 4-20 mA*
8 Demand Limit 4-20 mA*
9 Remote Supply Air Set Point 4-20 mA*
10 Remote Supply Air Set Point 4-20 mA*
11 Outdoor Air IAQ 4-20 mA*
12 Outdoor Air IAQ 4-20 mA*
13 IAQ Remote Switch Common*
14 IAQ Remote Switch*
15 Supply Fan Status Switch*
16 Supply Fan Status Switch*
* Optional controls expansion module (CEM) is required.
Features with thermostat control of unit
• Two-stage heating (if installed)
• Multiple stage gas heating if unit is equipped with the
staged gas heat option
• Two-stage demand with fully proportional economizers
and integrated compressor capacity
• Two-stage cooling or adaptive multiple stage cooling
which can provide up to 5 stages of capacity
• Control of unit using Y1, Y2, W1, W2, and G thermostat or T55, T56, or T58 space sensors
• Control of the indoor fan
• Outdoor-air temperature/supply-air temperature monitoring with logic to lock the compressors out at low
ambient temperatures down to 0° F
• Control of a condenser fan based on outdoor-air and
condensing pressures
• Control of modulating economizer to provide free
cooling when outdoor conditions are suitable
• Control allows for use of the economizer and the
compressors to maximize the use of outside air cooling
to reduce part load operating costs
• Control of the power exhaust fans based on configurable damper positions or outside air intake valves or
directly from the optional building pressure sensor
• Compressor time guard override (power up and
minimum on and off timers) to assure air return in low
load conditions
• Support of IAQ sensor
Features with sensor control of unit
There are 3 sensor options available:
• T55 sensor will monitor room temperature and provide
unoccupied override capability (1 to 4 hours).
• T56 sensor will monitor room temperature, provide
unoccupied override capability (1 to 4 hours), and provide a temperature offset of 5 F maximum.
• T58 is a CCN communicating sensor that will provide
the set point and space temperature values.
Standard features are:
• Support of remote occupied/unoccupied input to start
and stop the unit
• Two-stage economizer demand with fully proportional
economizers and integrated compressor capacity
• Cooling capacity control of 2 levels cooling with either
2-stage control or adaptive control with up to 5 stages
of mechanical refrigeration capacity
• Occupied or unoccupied set point
• Enable heating (if installed) or cooling during unoccupied periods as required to maintain space temperature
within the unoccupied set points
• Adjustment of space temperature set points of ± 5° F
when using a T56 sensor
• Support of IAQ sensor
• 365-day timeclock with backup (supports minute, hour,
and day of week, date, month, and year access). The
timeclock includes the following features:
— Daylight savings time function
— Occupancy control with 8 periods for unit operation
— Holiday table containing up to 18 holiday schedules
— Ability to initiate timed override from T55 or T56
sensors (for a timed period of 1 to 4 hours)
— Temperature compensated start to calculate early
start times before occupancy
— For units connected into a CCN network the
timeclock can be integrated into the overall building
energy management system and be updated remotely
• For units connected to the CCN network the user can
also display all the unit information including I/O values
Maintenance, Configuration, Service, and Set Point
data tables
• Indoor air quality (IAQ)
Variable air volume (VAV) applications
The 48/50A3,A5 units are designed to operate in VAV
applications. As standard they include a supply fan inverter
(VFD) to control the supply fan speed and duct pressure.
They are designed to control the leaving-air temperature in
cooling to a configurable set point. The changes in mode
of operation from Heating to Vent to Cooling mode can be
controlled either from the return air temperature sensor or
from an accessory space temperature sensor. Some of the
features for VAV units in a stand-alone application are:
• The units are shipped as operable, stand-alone units
with the addition of a field-supplied timeclock to
establish unit start and stop times or they can use
ComfortLink™ time of day scheduling routine
• Provide cooling and heating control (if equipped with
heat) in both occupied and unoccupied modes
• Supports an optional space temperature sensor for
mode control and supply air temperature reset
• If space sensor is equipped with an override feature, the
sensor will allow operation during the unoccupied
period for a fixed length of time
• Base unit control supports a heat interlock relay (field
supplied) to signal the VAV terminal devices to fully
open during heating operation
• Control board diagnostics
• Control of an outdoor-condenser fan based upon
outdoor-air temperature and saturated condensing
temperature
• Control of modulating economizer to provide free
cooling when outdoor conditions are suitable.
• Control also allows for use of the economizer and the
compressors to maximize the use of outside air cooling
to reduce part load operating costs
• Support of remote occupied/unoccupied input to start
• Controls the operation of the supply fan inverter to
maintain a configurable supply duct static pressure
set point. Inverter is configured and controlled directly
by ComfortLink controls
• Support of IAQ sensor
• Support a field test for field check out
• Support linkage to ComfortID™ systems
• Cooling capacity control of up to 5 stages plus
economizer
• Control of two stages of heat to maintain return-air
temperature
• Multiple stage gas heating if unit is equipped with the
staged gas heat option
• Control of heat interlock relay
• Compressor time delays to prevent rapid cycling of
compressors
• Automatic lead-lag control of compressors to reduce the
number of compressor cycles
93
Controls (cont)
• With the addition of a remote start/stop switch heating
or cooling is enabled during unoccupied periods as
required to maintain space temperature to within
unoccupied set points
• With the addition of the controls expansion board, the
ComfortLink™ controls will also support demand limiting and remote set point control
When the unit is connected to a CCN (Carrier Comfort
Network®) system, additional features can be used:
• Interface of the unit clock with the CCN network clock
and allow for remote configuration of the schedules
• CCN demand limit participation
• Interface with ComfortID™ control systems through
linkage
Sequence of operation
Cooling, constant volume (CV) units — On power up,
the control module will activate the initialization software.
The initialization software will determine the unit configuration and also initialize any controls loops and input/
output devices. All alarms and configurations are saved in
memory and maintained during power outages. All alarms
will be maintained in memory and must be cleared through
the display.
Constant volume conventional thermostat control — If the unit is equipped with a conventional
thermostat with Y1, Y2, W1, W2 and G connections then
the control will perform the following sequence.
When G is closed the indoor fan will turn on. G must be
closed for heating or cooling to occur. If Y1 is closed then
the control will first check the ability to use the economizer.
If the economizer can be used, the control will modulate
the damper open to maintain the low load economizer
leaving air temperature set point. If Y2 closes then the control will lower the leaving air temperature set point to the
configured set point. If the economizer can not satisfy the
load then compressors will be sequenced on to maintain
either the low or high load temperature set points. If the
economizer can not be used or the enable control disables
the economizer, then the control will sequence the
compressors based on the Y1 and Y2 signals. If two-stage
control has been selected then the control will map the
compressors to the Y1 and Y2 inputs as defined in the
loading sequence. If Adaptive mode has been selected then
the control will add and remove compressors stages to
maintain the low and high demand leaving air set points. If
Y1 is closed at least one compressor stage will be turned
on.
If W1 closes then it will indicate that the units should be
in the Heating mode. The economizer will be closed to the
minimum position, and if the unit is equipped with gas or
electric heat then the first stage of heat will be energized. If
W2 closes then the control will turn on the second stage of
heat. If the unit is equipped with a staged gas heat control
option then the W1 signal will be used to control the gas
heat to the configurable low heat load leaving air temperature set point. When W2 is energized, the unit will fire all
stages of heat capacity. If the unit is equipped with gas heat
then the IGC board will control the operation of the gas
94
heat. See the 48 Series Gas Heat units section for the IGC
board sequence of operation.
Constant volume space temperature sensor control — If the space temperature operation has been
selected using a T55, T56, or T58 sensor then the
following logic will be used to control the operation of the
unit. If a space temperature is used then a wire jumper
must be added between R, W1, and W2. If a remote
occupancy control method has been selected then the
input must first be closed for the unit to go into Heat, Vent
or Cooling mode. If the internal timeclock is used, the
control module determines the occupancy state based on
the system time schedules. If Temperature Compensated
Start is active, the unit will be controlled as in the occupied
mode and will start a time as determined by prior
operation to have the space at set point by the occupied
time. If the unit has been configured for a preoccupancy
purge then the control will start the unit in Vent mode prior
to the occupancy time to vent the space. If an IAQ sensor
is being used and the low IAQ set point is satisfied then the
occupancy purge mode will be terminated. The set points
for heat and cooling are configurable through the display.
If a T56 sensor is being used then the set point can be
shifted by has much as 5 degrees. If the space temperature
goes above the cooling set point then the unit will go into
Cooling mode. If the economizer can be used, the control
will first try to control to the leaving air temperature set
point. The set point will depend on the space temperature.
If the temperature is above the low demand set point then
the low economizer load discharge air temperature set
point will be used. If the temperature is above the high load
space temperature set point then the high load leaving air
temperature set point will be used. If the economizer can
not satisfy the load then compressors will be sequenced on
to maintain either the low or high load temperature set
points. If the economizer can not be used or the enable
control disables the economizer then the control will
sequence the compressors based on the low and high load
space temperature variables. If two-stage control has been
selected then the control will map the compressors to the
low and high loads as defined in the loading sequence. If
Adaptive mode has been selected then the control will add
and remove compressor stages to maintain the high and
low demand leaving air set points.
If the space temperature goes below the heating space
temperature set points then it will indicate that the units
should be in the Heating mode. The economizer will be
closed to the minimum position and if the unit is equipped
with gas or electric heat then the first stage of heat will be
energized. If the space temperature goes below the high
load space temperature set point then the control will turn
on the second stage of heat. If the unit is equipped with a
staged gas heat control option then the low load demand
signal will turn on heating stages to maintain the leaving air
temperature set point. A high demand signal will energize
all stages of heat.
If the units is configured for unoccupied free cooling,
mechanical cooling or heating and the temperature goes
beyond the unoccupied configuration set points then the
control will turn on free cooling, mechanical cooling or
heat as needed to get within the unoccupied set points.
When in this mode, the economizer dampers will be
maintained fully closed or to the minimum unoccupied
ventilation set point.
Variable air volume control — On power up, the
control module will activate the initialization software. The
initialization software will determine the unit configuration
and also initialize any controls loops and input/output
devices. All alarms and configurations are saved in
memory and maintained during power outages. All alarms
will be maintained in memory and must be cleared through
the display.
The unit will first determine the mode of operation. If
the unit has been configured for space temperature demand then the control will determine, based on the configurable set points, if the unit should be in the heat mode,
vent mode or cooling mode. If the unit is configured for return air temperature control then it will start the fan and
monitor the return air temperature vs. the configurable set
point to determine if the unit should be in cooling, vent or
heating mode.
If the control is connected to a ComfortID™ system, the
room terminals are equipped with microprocessor controls
that give commands to the base module. If linkage is active,
the control module will replace local ComfortLink™ set
points and occupancy data with linkage supplied data.
If temperature compensated start is active then advance
pre-cool or heat of the space is enabled. If the unit
is configured to use a pre-purge cycle then the
ComfortLink controls will start the unit in Vent mode
based on a pre-start time interval. If an IAQ sensor is being
used and the low IAQ control point is satisfied, then the
mode will be terminated.
If Cooling mode is required, then the controlling set
point will be the leaving air temperature set point. If an
economizer is present and the changeover control allows
the economizer to be used, then it will first attempt to
control the leaving-air temperature using free cooling. If
this can not satisfy the load, then additional compressor
stages will be turned on to maintain the leaving-air
temperature. When both compressors and economizers
are being used, the control will use the economizer dampers to maintain better control of the leaving-air and to help
prevent high compressor cycling. If the economizer can
not be used then it will be set to the minimum vent position. When using compressors, the leaving-air temperature
will sequence to compressors on and off using a PID control loop. If the unit is equipped with an optional hot
gas bypass valve the control will use the hot gas as an additional stage of capacity. When the first stage of cooling is
required the control will turn on a circuit “A” compressor
and the hot gas bypass valve. When additional cooling is
called for it will turn off the hot gas bypass valve. The valve
will also be used for additional freeze protection of the coils
when low evaporator refrigerant temperatures are detected
using the suction pressure transducers.
When operating in cooling the control will also monitor the
supply duct pressure and send a 4 to 20 mA signal to the
factory-supplied inverter to control the speed of the fan and
the delivered cfm. If on a linkage system the control will also
support static pressure reset based on the needs of the zones.
If the unit has been enabled for occupied heat and the
space temperature sensor (SPT), return air temperature
sensor (RAT) or linkage demand calls for heat, the control
will energize the electric heat or gas heat (if present) to
warm the space. In this mode the control will energize the
heat interlock relay which will signal the terminals to open
to the heating position. Note that for the linkage systems
the interlock relay connection is not required. Once the
Heat mode is enabled, the heat capacity will be controlled
by the return air temperature set point. Heating will continue until the return temperature set point is satisfied. If the
unit is configured for morning warm-up and the heating demand is below the set point during the first 10 minutes of
operation, the control will energize full heating capacity until the return air temperature set point is satisfied.
If the space temperature sensor (SPT), return air
temperature sensor (RAT) or linkage demand requires that
the unit be in heating then the control will energize the
electric heat or gas heat (if present) to warm the space. In
this mode the control will energize the heat interlock relay
which should be connected to the terminals to indicate that
they should open to the heating position. The interlock
relay connection is not required for the linkage systems.
Heating will continue until the mode selection sensor is
satisfied.
Dehumidification mode — A Dehumidification mode
can be initiated by either a discrete input on TB6 or by a direct measurement of humidity levels with an optional space
or return air humidity sensor. When the Dehumidification
mode is active, the evaporator coil leaving air temperature
will be controlled to the Dehumidify Cool set point, which
is typically colder than the normal cool mode leaving air set
points.
In this mode, comfort condition set points, which are
based on dry bulb temperature, will be overidden. If a
source of reheat is available, then the leaving-air temperature can be raised to a more desirable temperature. Available methods of reheat are internal gas heat if the unit is
equipped with the staged gas heating option or an external
heat source that can be controlled by a 4 to 20 mA signal.
48 series gas heat units
The gas heat units incorporate 2 (3 on size 060) separate
systems to provide gas heat. Each system incorporates its
own induced-draft motor, integrated gas control (IGC)
board, 2-stage gas valve, manifold, and safeties. For
2-stage heat control the systems are operated in parallel.
For example, when there is a call for first stage heat, both
induced-draft motors operate, both gas valves are energized, and both IGC boards initiate spark. With the staged
gas control, the systems are operated independently to
allow for a greater range of capacity control. All of the gas
heating control is performed through the IGC boards (located in the heating section). The MBB module board
serves only to initiate and terminate heating operation and
monitor the status of the requirements for indoor fan operation. The fan will be controlled directly by the MBB board.
The base module board is powered by 24 vac. When the
thermostat or room sensor calls for heating the MBB board
will close heating relays and send power to W on each of
the IGC boards. An LED on the IGC board will be on
95
Controls (cont)
during normal operation. A check is made to ensure that
the rollout switches and limit switches are closed and the
induced-draft motors are not running. After the induceddraft motors are energized and speed is proven with the
Hall Effect sensor on the motor, the ignition activation
period begins. The burners will ignite within 5 seconds.
When ignition occurs the IGC board will continue to monitor the condition of the rollout and limit switches, the Hall
Effect sensor and the flame sensor. If the unit is controlled
through a room thermostat set for fan auto., 45 seconds
after ignition occurs the indoor-fan motor will be energized
and the outdoor-air dampers will open to their minimum
position. If the over temperature limit opens prior to the
start of the indoor fan blower, on the next attempt the
45-second delay will be shortened to 5 seconds less than
the time from initiation of heat to when the limit tripped.
Gas will not be interrupted to the burners and heating will
continue. Once modified, the fan on delay will not change
back to 45 seconds unless power is reset to the control. If
the unit is controlled through a room sensor, the indoor fan
will be operating in the occupied mode and the outdoor-air
dampers will be in the minimum position. If the unit is
96
controlled with a room sensor in the unoccupied mode, the
indoor fan will be energized through the IGC board with a
45-second delay and the outside-air dampers will move to
the minimum unoccupied set point. When additional heat
is required, the second stage MBB output relay closes and
initiates power to the second stage of all main gas valves in
all sections. When the demand is satisfied, MBB heat output relays will open and the gas valves close interrupting
the flow of gas to the main burners. If the call for stage 1
heat lasts less than 1 minute, the heating cycle will not terminate until 1 minute after W1 became active. If the unit is
configured for intermittent fan then the indoor-fan motor
will continue to operate for an additional 45 seconds then
stop and the outdoor-air dampers will close. If the over
temperature limit opens after the indoor motor is stopped
within 10 minutes of W1 becoming inactive, on the next
cycle the time will be extended by 15 seconds. The maximum delay is 3 minutes. Once modified, the fan off delay
will not change back to 45 seconds unless power is reset to
the control.
Application data
Ductwork — Secure vertical discharge ductwork to roof
curb. Interior installation may proceed before unit is set in
place on roof. For horizontal discharge applications, attach
ductwork to unit, or field-supplied flanges can be attached
to horizontal discharge openings and all ductwork attached
to flanges. Units equipped with electric heat require a
90-degree elbow below the unit supply duct connection.
Thru-the-curb service connections — Roof curb connections allow field power wires and control wires to enter
through the roof curb opening.
Thermostat (CV only) — Use of a thermistor-type room
sensor is recommended on all CCN installations. A
thermistor-type room sensor or a 2-stage heating/cooling
thermostat may be used for all other units.
Heating-to-cooling changeover — All units are
automatic changeover from heating to cooling when
automatic changeover thermostat and subbase or a
thermistor-type room sensor are used.
Airflow — Units are draw-thru on cooling and blow-thru
on heating.
Maximum airflow — To minimize the possibility of
condensate blow-off from evaporator, airflow through units
should not exceed values shown in Cooling Cfm Operating
Range table and Cooling Capacities tables.
Minimum airflow — The minimum airflow for cooling is
300 cfm/ton for constant volume units and 70 cfm/ton
for VAV (variable air volume) units. Performance at
70 cfm/ton is limited to unloaded operation and may be
additionally limited by entering-air temperatures. Refer to
Gas Heating Capacities and Efficiencies table on page 7
for minimum airflow cfm for heating.
Minimum ambient cooling operation temperature
— All units are equipped with factory economizers to allow
free cooling at any outdoor ambient. If mechanical cooling
is required, the units are designed to operate at outdoor
temperatures down to 32 F. With accessory
Motormaster® V control units can operate at outdoor temperatures down to –20 F. Outdoor-fan motor no. 1 change
out is required for Motormaster V applications.
Carrier recommends the installation of field-fabricated
wind baffles on all vertically oriented condenser coil surfaces when operating in environments with prevailing winds
of more than 5 mph and where temperatures drop below
32 F.
Maximum operating outdoor-air temperature —
The maximum operating outdoor-air temperature is
115 F. Some models will operate up to 125 F depending
on model and operating conditions.
High altitude (gas heat units only) — A change to the
gas orifice may be required at high altitudes. Refer to
Altitude Compensation table on page 9.
Minimum temperature — Minimum allowable temperature of mixed air entering the heat exchanger during half
rate (first stage) operation is 50 F. There is no minimum
mixture temperature during full-rate operation. Comfort
conditioning may be compromised at temperatures below
50 F. Below 50 F entering-air temperature (EAT) both
stages of heat are engaged.
Internal unit design — Due to Carrier’s internal unit
design (draw-thru over the motor), air path, and specially
designed motors, the full horsepower listed in the Physical
Data table and Motor Limitations table can be utilized with
extreme confidence. Using Carrier motors with the values
listed in the Physical Data and Motor Limitations tables will
not result in nuisance tripping or premature motor failure.
The unit warranty will not be affected.
Electric heat — A field-supplied 90-degree elbow must
be installed in the supply ductwork below the unit
discharge.
97
TYPICAL POWER SCHEMATIC (48/50A2,A3,A4,A5040 Shown)
Typical wiring schematics
a48-8344
98
7
1
R
BRN RED
T-56
ACCESSORY
+
REMOTE
ECONO
POSITION
4-20 ma
CLR
PL12-7
BLK
BLK
PL18-1 PL12-8
BLU
PL18-3
DRAIN WIRE
SEN
SET
SEN
ACC
REMOTE
ECONOMIZER
MIN POSITION
SETPOINT
POT
(100K)
T-55
ACCESSORY
NOTE: REMOVE
RESISTOR
WHEN USING
REMOTE POT
6
7
ACC
SPACE
IAQ
SENSOR
1
J7J8
6
J7 J8
7
RETURN
AIR IAQ
FIOP
SENSOR
2
2
1
PL18-6
FIELD SUPPLIED
24 VAC
TB4
C
PL18-4
BRN RED
RETURN AIR
SMOKE
DETECTOR
FIOP
(IN AUX BOX)
6
7
PL7-2
PL7-1
+
CLR
BLK
10K
10K
10K
NET +
NET -
SHIELD
1
3
NET +
NET -
N/C
N/C
SIGNAL
1
2
3
4
5
PORT 2
BLK
RED
BLK
RED
BLK
RED
RED
1
2
3
4
5
6
7
8
TB3
FIOP/ACC
FILTER
STATUS 1
2
UPC
PORT 1A
LEN
CCN
C
-
SH
CCN
RAT
EDT
OAT
SPT-A
CLR
RED
DPT-A
DPT-B
SPT-B
RED
BLK
GND
PL7-3
TB5
BLK
CLR
PL12-4 PL2-4
BLU
PL13-4
BLU
17
REMOTE FIRE
SHUTDOWN
CONTACTS
(FIELD WIRING)
PL12-5 PL2-5
BRN
PL13-5
BRN
9
10
PL13-2
1
2
3
4
5
6
7
8
BLK
RED
BLK
RED
BLK
RED
10
TB5
11
WHT
BLU
BRN
TRANS3
CB3 BRN
SEE POWER
LABEL
PL12-3 PL2-3
WHT
PL12-6 PL2-6
RED
PL13-1
VIO
PL12-2
VIO
VIO
PL2-2
PL13-3
WHT
PL13-6
RED
6
5
4
BLU
PL12-1
PL2-1
BLU
BLU
RED
WHT
BLK
RED
BRN
BLK
WHT
RED
3
2
1
J4
NET
RED
VIO
11
PL1-6
ORN
BLU
4
3
RED
WHT
BLK
GND
RED
WHT
BLK
GRD
RED
BRN
VIO
5
BLU
BLK
BRN
ORN
1
2
3
4
5
6
7
8
BLU
PL28-6
GND
PL28-7
10
ORN
PL28-8
9
BRN
PL28-9
GND
PL28-5
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
BLK
PL28-3
GND
PL28-2
PL28-1
RED
GRN
BLK
BLU
BRN
ORN
RED
GRN
BLK
RED
GRN
PL28-4
PL1-5
LON
OPTION
J3 GND
PL30-4
BLK
PL30-3
CLR
PL29-2
BLK
CLR
PL29-1
TB5
PL31-9
PL31-8
PL31-7
PL31-6
PL31-5
PL31-4
PL34-6
PL34-5
PL34-4
PL34-3
PL34-2
BLK
1
2
4
3
5
6
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
11
12
13
LEN +
LEN C
LEN -
LENshld
CCN +
CCN c
CCN -
CCNsld
24 VAC
AN8
AN9
AN10
AN11
AN5
AN6
AN7
5V
AN3
5V
AN4
5V
AN1
5V
AN2
24 VAC
24VAC (PTC)
D1-1
24VAC (PTC)
D1-2
J5
J8
J6
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
4
5
6
SEE AUXILLARY
BOX LABEL
ONLY ON GAS
HEAT UNITS
WHT
BLU
PL20-2
PL20-1
RED
PL3-3
BLK
IGC1-IFO
BRN
PL34-1
CLR
PL30-2
BLK
PL30-1
RED
GRN
BLK
RED
GRN
BLK
RED
GRN
BLK
RED
GRN
BLK
RED
BRN
PL21-1
PL21-2
BLU
6
G
ORN
5
W2
GRA
4
W1
BOARD
(MBB)
MAIN
BASE
J7
RED
3
Y2
VI0
2
Y1
3
1
9
1
6
5
4
3
2
1
RED
CEM-J3-1
GRD
BLK
WHT
GRD
CEM-J3-3
CEM-J3-2
RED
BRN
6
5
SEE CEM
WIRING
DIAGRAM
LEN shld 4
LEN c 2
J3
LEN - 3
LEN +
24VAC
GND
3
4
BLK
3
LEN -
2
WHT
J4
RED
BRN
ORN
RED
BRN
ORN
RED
BRN
ORN
2
LEN shld 4
1
TRAN2
6
5
4
3
2
BLK
WHT
RED
BLK
WHT
RED
6
5
4
3
2
1
WHT
BLK
PL4-4
PL4-3
PL4-2
PL4-1
PL1-4
PL1-3
PL1-2
PL1-1
J5 DISPLAY
SDU
SCROLLING
MARQUEE
1 GND
3 SIG CS A1
2 5V
1 GND
3 SIG CS A2
2 5V
1 GND
3 SIG CS B1
2 5V
GND
BLK
CLR
RED
BRN
7
GRN
BLK
CLR
RED
BRN
TB4
BRN
8
X
GRN/YEL
24 VAC
1 GND
2 5V
RED
BRN
RED
7
FROM POWER SCHEMATIC
3.7 AMPS
CB2
RED
1
C
ALARM
OUTPUT
(24 VAC)
(5 VA MAX)
R
3 SIG CS B2
RED
SEE CEM
SCHEMATIC
GRA
VIO
RED
ORN
RED
RED
BRN
RED
1
1
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
1
BRN
LEN +
12
11
10
3
2
LEN c
5V
DIG 1
5V
7
8
J9
5V
DIG 2
6
4
5
5V
DIG 3
3
2
1
1
J2 2
DIG 4
5V
3
J1 2
24 VAC
NC
24 VAC
NC
TB4
RED JUMPER WIRE MUST BE ADDED BETWEEN
R & W2 AND W2 & W1 FOR UNITS EQUIPPED
WITH HEAT IN NON-THERMOSTAT APPLICATIONS
4
TB5
5
5
9
8
8
9
REMOTE FIELD
SMOKE ALARM
CONTACTS
J10A
J10B
J10C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
2
10
11
1
2
3
4
5
6
7
8
9
SCB-J3-3 GAS HEAT LABLEL
SEE STAGED
SCB-J3-2 GAS HEATFIOP
GRD
BLK
GRA
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
1
BRN
VIO
RED
RED
RED
ECB1-J3-1
ECB2-J3-1AUXILLARY
ECB1-J3-2
ECB2-J3-2CONTROL
ECB1-J3-3BOX ECB1 & ECB2
ECB2-J3-3
MODULATING
GRD
RLY11
ALARM
RLY9
HIR
RLY10
IDF
OFC-2
RLY5
RLY6
OFC-1
RLY7
HEAT2
RLY8
HEAT 1
RLY1
COMP
B2
RLY2
COMP
B1
RLY3
COMP
A2
SCB-J3-1
GRN
RED
PL5-2
WHT
PL5-3
BLK
PL5-4
PL5-1
TB4
RLY4
COMP
A1
MAIN BASE
BOARD
(MBB)
J10
HOT
GND
UPC
24VAC
VIO
PL31-1
CB1
RED
BLU
C.B2-AUX
BLK
2
1
TB5
SEE GAS OR
ELECTRIC HEAT
LABEL
PL3-2
PL3-1
P31-3
BLK
BLK
BLK
SEE NOTE 3
VIO
ORN
BLK
PL31-2
BLK
PL31-1
BLK
BLK
MAIN BOX CONTROL SCHEMATIC 48/50A2,A3,A4,A5020-060
1
1
24VAC (PTC)
2
2
D1-3
4
D1-4
3
3
24VAC (PTC)
6
24VAC (PTC)
7
6
D1-5
7
24VAC (PTC)
10
10
D1-7
8
D1-6
9
24VAC (PTC)
FOR FIELD MONITORED AND
CONTROL OF FIRE MANAGEMENT
DISCONNECT BLU AND WHT WIRE
FROM TB5-11 AND TB5-12
182 OHM
a48-8345
CAN ONLY
HAVE ONE
99
BLK
ORN
BLK
BLU
PNK
BLK
GRA
BLK
BLK
HPS-A
BLU
PNK
ORN
PL32-7
PL32-5
TRAN1
X2
TO AUX BOX
ECB2 FOR
HOT GAS BYPASS
GRN-YEL
115 VAC
M1
M1
M1
M1
IP-B2
IP-B1
IP-A2
IP-A1
M2
M2
M2
WHT
WHT
WHT
WHT
PL32-8
PL32-6
PL32-4
PL32-2
PL11-2
PL11-1
PL7-9
M2
INDUCED DRAFT
MOTOR WIRING
PL11-4 SEE GAS HEAT
LABEL DIAGRAM
PL11-3
PL7-8
PL32-1
GRA
PL32-3
BLK
BLK
BLK
X1
FROM POWER SCHEMATIC
ORN
BLU
PNK
SEE NOTE 2
C1 C.B2 C2
C1 C.B1 C2
C1 C.A2 C2
SEE NOTE 4
BLK
PNK
BRN
ORN
BLK
BLK
BLK
BLK
BLK
BLK
BLK
14
14
14
13
14
C.B2-AUX
C.B2-AUX
13
C.B1-AUX
C.B1-AUX
13
C.A2-AUX
C.A2-AUX
13
C.A1-AUX
GRY
PL33-4
VIO
PL33-3
RED
BRN
PL33-2
BLU
WHT
CCH
- A1
BLK
CCH
CCH
- B1
BLK
- A2
BLK
BLK
CCH
BLK
- B2
C1 OFC1 C2
SEE NOTE 4
BLK
BLK
C1 OFC3 C2
SEE NOTE 4
BLK
1/4 SPADE
CONNECTORS
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
IFCA ONLY USED ON 040-060
WHT
WHT
WHT
PL33-5
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
C2 OFC3
C2 OFC1
C2 IFC
PL11-1,2
C2 OFC3
C2 OFC2
C2 IFC
C2 OFC1 OR 4
C2 OFC2
C2 C.B2
C2 OFC1
C2 C.B1
C2 C.B2
C2 C.A2
C2 C.B1
C2 C.A1
C2 C.A2
X2 TRAN1
PL33-5
C2 IFC
THE 020-027 UNITS ONLY HAVE 3 COMPRESSORS
AND DO NOT USE THE CCH-B2 CRANKCASE HEATERS
VIO
GRY
RED
BLU
BRN
ORN
T2 IP-B2 T1
T2 IP-B1 T1
T2 IP-A2 T1
PL33-1
ORN
BLK
BLK
C.A1-AUX
SEE NOTE 1
BLK
T2 IP-A1 T1
WHT
IFC C2
C1 IFCA C2
PNK
C1
C1 OFC2 C2
OFC4 ON 060 WITH MCHX
C1 OFC1 C2
NOTE 4 - THE N.O. COMPRESSOR CONTACTOR AUXILIARY CONTACTS AND OUTDOOR FAN
CONTACTORS THEY DRIVE ARE ONLY USED ON 060 WITH MCHX UNITS
NOTE 3 - HIR RELAY CONTACTS RATED FOR 1 AMP AT 115 VAC & 3 AMPS AT 24 VAC.
NOTE 2 - COMPRESSOR B2 IS NOT USED ON THE 020-027 UNITS
WHT
C1 C.A1 C2
SEE NOTE 1
GRA
NOTE 1 - INTERNAL COMPRESSOR MOTOR PROTECTORS (IP) ARE ONLY
USED ON THE COPELAND COMPRESS0RS IN THE FOLLOWING UNITS:
208/230, 380, AND 575V - 060 - ALL COMPRESSORS
FOR ALL OTHER UNITS MBB RELAYS ARE WIRED DIRECTLY TO
COMPRESSOR CONTACTOR.
HPS-B
BLK
BLK
BLK
CB1
9.0 AMPS
BLK
AUXILIARY CONTROL BOX SCHEMATIC 48/50A2,A3,A4,A5020-060
Typical wiring schematics (cont)
a48-8346
100
a48-8347
101
CONTROLS EXPANSION MODULE WIRING SCHEMATIC 48/50A2,A3,A4,A5020-060
SW2/DEHUM
SW1
GAS HEAT CONTROL SCHEMATIC (TWO-STAGE HEAT) 48A2,A3020-060
Typical wiring schematics (cont)
a48-8348
102
LEGEND FOR TYPICAL WIRING SCHEMATICS
LEGEND
A
AUX
BP
C
CAP
CB
CCB
CCN
CEM
COMP
CS
DP
DPT
ECB-1
ECB-2
EDT
FIOP
FS
FU
GND
HGBP
HPS
HR
HS
IAQ
IDM
IFC
IFCB
IFM
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Circuit A
Auxiliary Contact
Building Pressure Transducer
Compressor Contactor
Capacitor
Circuit Breaker
Control Circuit Breaker
Carrier Comfort Network®
Controls Expansion Module
Compressor
Compressor Current Sensor Board
Discharge Pressure Transducer
Discharge Pressure Transducer
Economizer Control Board
VAV Control Board
Evaporator Discharge Temperature
Factory-Installed Option
Flame Sensor
Fuse
Ground
Hot Gas Bypass
High-Pressure Switch
Heat Relay
Hall Effect Induced Draft Motor Switch
Indoor Air Quality
Induced-Draft Motor
Indoor-Fan Contactor
Indoor-Fan Circuit Breaker
Indoor-Fan Motor
IGC
—
IP
—
LEN
—
LS
—
MBB —
MGV —
OARH —
OAT
—
OFC —
OFM —
OL
—
PEC —
PEM —
PL
—
PTC
—
RARH —
RAT
—
RS
—
SCB —
SDU —
SPT
—
T-55
—
T-56
—
TB
—
TRANS—
UPC —
VAV
—
VFD
—
Integrated Gas Control Board
Internal Compressor Protector
Local Equipment Network
Limit Switch
Main Base Board
Main Gas Valve
Outdoor Air Relative Humidity
Outdoor Air Temperature Sensor
Outdoor-Fan Contactor
Outdoor-Fan Motor
Overload
Power Exhaust Contactor
Power Exhaust Motor
Plug
Positive Temperature Coefficient
Return Air Relative Humidity
Return Air Temperature Sensor
Rollout Switch
Staged Gas Heat Control Board
Scrolling Marquee Display
Suction Pressure Transducer
Room Temperature Sensor
Room Temperature Sensor with Set Point
Terminal Block
Transformer
Universal Protocol Converter
Variable Air Volume
Variable Frequency Drive
THERMOSTAT MARKINGS
BM
— Blower Motor
C
— Common
CM
— Inducer Motor
CS
— Centrifugal Switch
G
— Fan
IFO
— Indoor Fan On
L1
— Line 1
R
— Thermostat Power
RT
— Power Supply
SS
— Speed Sensor
W1
— Thermostat Heat Stage 1
W2
— Thermostat Heat Stage 2
X
— Alarm Output
Y1
— Thermostat Cooling Stage 1
Y2
— Thermostat Cooling Stage 2
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Factory Wiring
Field Wiring
To indicate common potential
only, not to represent wiring.
103
Guide specifications — 48/50A2,A4
Packaged Rooftop Cooling Unit and
Packaged Rooftop Cooling Unit With Gas
Heat — Constant Volume Application
HVAC Guide Specifications —
Section 48/50A2,A4
Size Range: 20 to 60 Tons, Nominal (Cooling)
Carrier Model Number:
48A2, 48A4, 50A2, 50A4
Part 1 — General
1.01 SYSTEM DESCRIPTION
Outdoor roof curb or slab mounted, electronically
controlled heating and cooling unit utilizing hermetic
scroll compressors with crankcase heaters for
cooling duty and with optional gas heat or electric
heat. Units shall discharge supply and return air
vertically or horizontally as shown on contract
drawings. EER shall meet requirements of ASHRAE
Standard 90.1-2007 (effective 1/1/2010).
1.02 QUALITY ASSURANCE
A. Unit shall be rated in accordance with AHRI Standard 340/360, latest edition.
B. Unit shall be designed to conform to ANSI/
ASHRAE 15 (latest edition), ASHRAE 62, and UL
Standard 1995.
C. Unit shall be listed by ETL and ETL, Canada as a
total package.
D. 48A2,A4 units shall be designed to conform with
ANSI Standard Z21.47 (U.S.A.) / CSA Standard
2.3 (Canada), Gas-Fired Central Furnaces.
E. Roof curb shall be designed to NRCA criteria per
Bulletin B-1986.
F. Insulation and adhesive shall meet NFPA 90A
requirements for flame spread and smoke
generation.
G. Unit shall be manufactured in a facility registered to
the ISO 9001:2000 manufacturing quality standard.
1.03 DELIVERY, STORAGE AND HANDLING
Unit shall be stored and handled per manufacturer’s
recommendations. All exposed coils shall have
protective shipping covers.
Part 2 — Products
2.01 EQUIPMENT
A. General:
Factory-assembled, single-piece heating and cooling
unit. Contained within the unit enclosure shall be all
factory wiring, piping, refrigerant charge (R-410A),
operating oil charge, dual refrigerant circuits, microprocessor based control system and associated hardware, and all special features required prior to field
start-up.
B. Unit Cabinet:
1. Constructed of galvanized steel, bonderized and
precoated with a baked enamel finish.
104
a. Top cover shall be 18-gage sheet metal with
0.75-in. thick, 1.5-lb density, fiberglass
insulation.
b. Access panels and doors shall be 20-gage
sheet metal with 0.5-in. thick, 1.5-lb density,
fiberglass insulation.
c. Corner and center posts shall be 16-gage
galvanized steel.
d. Basepans in the heating and return air
sections shall be 16-gage galvanized steel.
e. Basepans in the condenser section shall be
16-gage galvanized steel.
f. Compressor rail shall be 12-gage galvanized
steel.
g. Condensate pan shall be 16-gage aluminized
steel.
h. Air baffles shall be 18-gage galvanized steel
with 0.5-in. thick, 1.5-lb density, fiberglass
insulation.
i. Base rail shall be 14-gage galvanized steel.
j. Fan deck (indoor and outdoor section) shall
be 16-gage galvanized steel.
2. Unit casing shall be capable of withstanding
500-hour salt spray exposure per ASTM B117
(scribed specimen).
3. Sides shall have person-sized insulated hinged
access doors for easy access to the control box
and other areas requiring servicing. Each door
shall seal against a rubber gasket to help prevent air and water leakage and be equipped to
permit ease and safety during servicing.
4. Interior cabinet surfaces shall be sheet metal
lined or insulated with flexible fire-retardant
material, coated on the air side.
5. Unit shall have a factory-installed sloped
condensate drain connection made from an
aluminized steel or optional stainless steel.
6. Equipped with lifting lugs to facilitate overhead
rigging.
7. Filters shall be accessible through a hinged
access panel without requiring any special tools.
C. Fans:
1. Indoor Evaporator Fans:
a. Double-width/double-inlet, centrifugal, belt
driven, forward-curved type with single
outlet discharge.
b. Fan shaft bearings shall be of the pillowblock type with positive locking collar and
lubrication provisions.
c. Statically and dynamically balanced.
d. Evaporator fan shaft bearings shall have a
life of 200,000 hours at design operating
conditions in accordance with ANSI B3.15.
e. Solid fan shaft construction for size 020-050
units and two-piece solid fan shaft construction on the size 060 unit.
2. Condenser Fans:
a. Fans shall be direct-driven propeller type
only, with corrosion-resistant blades riveted
to corrosion resistant steel supports for all
size 020-050 units and the size 060 unit
with optional condenser coil. Size 060 units
with the microchannel condenser coil shall
have a direct driven, 9-blade airfoil cross section, reinforced polymer construction, and
shrouded-axial type fans with inherent corrosion resistance.
b. Discharge air vertically upward and
protected by PVC coated steel wire safety
guards.
c. Statically and dynamically balanced.
D. Compressors:
1. Fully hermetic, scroll type compressors with
overload protection and short cycle protection
with minimum on and off timers.
2. Factory rubber-in-shear mounted for vibration
isolation.
3. Reverse rotation protection capability.
4. Crankcase heaters shall only be activated during
compressor off mode.
E. Coils:
1. Standard evaporator coil shall have aluminum
plate fins mechanically bonded to seamless
internally grooved copper tubes with all joints
brazed.
2. Standard condenser coil shall be microchannel
design. The coil shall have a series of flat tubes
containing a series of multiple, parallel flow
microchannels layered between the refrigerant
manifolds. Microchannel coils shall consist of a
two pass arrangement. Coil construction shall
consist of aluminum alloys for the fins, tubes
and manifolds.
3. Coils shall be leak tested at 150 psig and pressure tested at 650 psig.
4. Optional condenser coil shall have aluminum
plate fins mechanically bonded to seamless
internally grooved copper tubes with all joints
brazed.
5. Optional pre-coated aluminum-fin coils shall
have a durable epoxy-phenolic coating to
provide protection in mildly corrosive coastal
environments. Coating shall be applied to the
aluminum fin stock prior to the fin stamping
process to create an inert barrier between the
aluminum fin and copper tube. Epoxy-phenolic
barrier shall minimize galvanic action between
dissimilar metals.
6. Copper-fin coils shall be constructed of copper
fins mechanically bonded to copper tubes and
copper tube sheets. Galvanized steel tube
sheets shall not be acceptable. A polymer strip
shall prevent coil assembly from contacting the
sheet metal coil pan to minimize potential for
galvanic corrosion between coil and pan. All
copper construction shall provide protection in
moderate coastal environments.
7. E-Coated aluminum-fin coils shall have a
flexible epoxy polymer coating uniformly
applied to all coil surface areas without material
bridging between fins. Coating process shall
ensure complete coil encapsulation. Color shall
be high gloss black with gloss — 60 deg of 65
to 90% per ASTM D523-89. Uniform dry film
thickness from 0.8 to 1.2 mil on all surface
areas including fin edges. Superior hardness
characteristics of 2H per ASTM D3363-92A
and cross-hatch adhesion of 4B-5B per ASTM
D3359-93. Impact resistance shall be up to
160 in./lb (ASTM D2794-93). Humidity and
water immersion resistance shall be up to
minimum 1000 and 250 hours respectively
(ASTM D2247-92 and ASTM D870-92).
Corrosion durability shall be confirmed through
testing to be no less than 1000 hours salt spray
per ASTM B117-90. Coil construction shall be
aluminum fins mechanically bonded to copper
tubes.
F. Gas Heating Section (48 Series Only):
1. Induced-draft combustion type with energy
saving direct spark ignition systems and redundant main gas valves.
2. The heat exchanger shall be of the tubular
section type constructed of a minimum of
20-gage steel coated with a nominal 1.2 mil
aluminum-silicone alloy for corrosion resistance. Optional stainless steel heat exchangers
shall be available.
3. Burners shall be of the in-shot type constructed
of aluminum coated steel.
4. All gas piping shall enter the unit cabinet at a
single location.
5. Induced Draft Fans:
a. Direct-driven, single inlet, forward-curved
centrifugal type.
b. Statically and dynamically balanced.
c. Made from steel with a corrosion-resistant
finish.
6. High-corrosion areas such as flue gas collection
and exhaust areas shall be lined with corrosion
resistant material.
G. Refrigerant Components:
Unit shall be equipped with dual refrigerant circuits
each containing:
1. Solid core filter drier.
2. Thermostatic expansion valve.
3. Fusible plug.
105
Guide specifications — 48/50A2,A4 (cont)
H. Filter Section:
Standard filter section shall be supplied with 2-in.
thick disposable fiberglass filters.
I. Controls and Safeties:
1. Unit ComfortLink™ Controls:
a. Scrolling marquee display.
b. CCN (Carrier Comfort Network®) capable.
c. Unit control with standard suction pressure
and condensing pressure transducers.
d. Shall provide a minimum 5° F temperature
difference between cooling and heating set
points to meet ASHRAE 90.1, energy
standard.
e. Shall provide and display a current alarm list
and an alarm history list.
f. Automatic compressor lead/lag control.
g. Service run test capability.
h. Shall accept input from a CO2 sensor (both
indoor and outdoor).
i. Configurable alarm light shall be provided
which activates when certain types of alarms
occur.
j. Compressor minimum run time (3 minutes)
and minimum off time (3 minutes) are
provided.
k. Service diagnostic mode.
l. Optional integrated economizer control or
two-position self-closing adjustable outside
air damper.
m. Minimum of 3 capacity stages of mechanical
capacity control (excluding hot gas bypass)
controlled by one of the following user
selectable methods:
1) A control algorithm to maintain either
high-cool or low-cool supply air temperature set point. Cooling mode (off, low
or high) to be determined from space
temperature sensor or standard 2-stage
mechanical thermostat input.
2) Two-stage control.
n. Optional minimum load valve for additional
capacity stage.
o. Unit shall be complete with self-contained
low voltage control circuit.
p. Control of evaporator leaving air temperature through compressor and economizer
control.
2. Safeties:
a. Unit shall incorporate a solid-state compressor lockout which provides optional reset
capability at the space thermostat should
any of the following safety devices trip and
shut off compressor:
1) Compressor lockout protection provided
for either internal or external overload.
106
J.
K.
L.
M.
2) Low-pressure protection.
3) Freeze protection (evaporator coil).
4) High-pressure protection (high pressure
switch or internal).
5) Compressor reverse rotation protection.
6) Loss-of-charge protection.
7) Welded contactor protection.
b. Supply-air sensor shall be located in the unit
and should be used for economizer control
and compressor stage control.
c. Induced draft heating section (48 Series)
shall be provided with the following
minimum protections:
1) High-temperature limit switch.
2) Induced-draft motor speed sensor.
3) Flame rollout switch.
4) Flame proving controls.
5) Redundant gas valve.
Operating Characteristics:
1. Unit shall be capable of starting and running at
115 F ambient outdoor temperature per maximum load criteria of AHRI Standard 340/360.
2. Unit with standard controls will operate in
cooling down to an outdoor ambient temperature of 32 F.
3. Unit shall be provided with fan time delay to
help prevent cold air delivery.
Electrical Requirements:
All unit power wiring shall enter unit cabinet at a
single location.
Motors:
1. Compressor motors shall be cooled by refrigerant gas passing through motor windings and
shall have either internal line break thermal and
current overload protection or external current
overload modules with compressor temperature
sensors.
2. All condenser-fan motors shall be totally
enclosed 3-phase type with permanently
lubricated ball bearings, class F insulation and
internal, automatic-reset thermal overload protection or manual reset calibrated circuit
breakers.
3. All indoor-fan motors 5 hp and larger shall
meet the minimum efficiency requirements as
established by the Energy Policy Act of 1992
(EPACT), effective October 24, 1997.
Special Features:
Certain features are not applicable when the
features designated * are specified. For assistance
in amending the specifications, contact your local
Carrier Sales Office.
* 1. Integrated Economizer:
a. Economizer shall meet the requirements of
ASHRAE 90.1.
b. Economizer shall be furnished and installed
complete with recirculated air dampers, outside air dampers, and controls.
c. All dampers shall be low leakage type and
gear driven.
d. Capable of introducing up to 100% outdoor
air for minimum ventilation as well as free
cooling.
e. Damper actuator shall be gear driven, 24-v
fully modulating design.
f. Economizer outdoor hood shall be
pre-painted.
g. Economizer shall meet the requirements of
the California Energy Commission airside
economizer acceptance test.
* 2. Barometric Relief Damper Package:
a. Package shall include damper, seals, hardware, and hoods to relieve excess internal
pressure.
b. Damper shall close due to gravity upon unit
shutdown.
* 3. Power Exhaust:
Package shall include a multiple exhaust fan
(centrifugal style) fan, 1 Hp 208-230, 460 v
direct-drive motor, and damper for vertical flow
units with economizer to control overpressurization of building. Control shall be
through ComfortLink™ controls based on
damper position or through an optional building pressure sensor. On size 020-050 units,
4 stages of control shall be available. On size
060 units, 6 stages of control shall be available.
* 4. Thermostats and Subbases:
To provide staged heating and cooling in
addition to automatic (or manual) changeover
and fan control.
* 5. Electronic Programmable Thermostat:
Capable of using deluxe full-featured electronic
thermostat.
* 6. Liquefied Propane Conversion Kit (48 Series):
Kit shall contain all the necessary hardware and
instructions to convert a standard natural gas
unit for use with liquefied propane gas.
* 7. Convenience Outlet:
Shall be factory-installed and internally
mounted with an externally accessible 115-v,
15 amp. GFI, female receptacle with hinged
cover. A step-down transformer and overload
protection shall be included so no additional
wiring is necessary unless the field-wired outlet
has been requested. When applied with a
unit-mounted disconnect, the outlet shall be
* 8.
* 9.
*10.
*11.
*12.
*13.
*14.
*15.
*16.
wired to the load side of the disconnect so the
outlet will shut off with the disconnect.
Non-Fused Disconnect Switch:
Shall be factory-installed, internally mounted,
and UL approved. Non-fused switch shall
provide unit power shutoff. Shall be accessible
from outside the unit and shall provide power
off lockout capability.
Electric Heater (50 Series Units Only):
Electric resistance heaters shall be factoryinstalled, nichrome element type, open wire
coils with 0.29 in. inside diameter, insulated
with ceramic bushings, and include operating
and safety controls. Coil ends are staked and
welded to terminal screw slots.
Hail Guard, Condenser Coil Grille:
Shall protect the condenser coil from hail, flying
debris, and damage by large objects without
increasing unit clearances.
CO2 Sensor:
The CO2 sensor shall have the ability to monitor CO2 levels and relay information to the
controller. The controller will use CO2 level
information to modulate the economizer and
provide demand control ventilation. The sensor
shall be available as field installed or factoryinstalled return air sensor or a remote space
sensor.
Return Air Smoke Detector:
The smoke detector shall send input to the
controller to shut down the unit in case smoke
is detected. The smoke detector shall be factory
installed in the return air section or shall be
available as a field-installed accessory.
Filter Status:
The filter status switch shall be a pressure
differential switch and will indicate a dirty filter.
The switch shall be available as field or factory
installed.
Humidity Sensor:
A humidity sensor will allow for outside air
enthalpy changeover control using the standard
outside air dry bulb sensor and the accessory
humidity sensor. When both an outside and
return air humidity sensor are used then differential enthalpy changeover can be supported.
Two-Position Damper:
A two-position damper shall admit up to 25%
outdoor air during fan operation and shall close
when the fan is off. The damper position shall
be mechanically adjustable.
4-Inch Filters:
Optional filter section shall be supplied with
4-in. thick MERV-8 pleated fiberglass filters.
107
Guide specifications — 48/50A2,A4 (cont)
*17. Control Expansion Module (CEM):
Shall provide the following additional optional
features:
a. Remote set point
b. Demand limit control
c. Remote economizer position
d. Fire and smoke control override control
e. Remote sensor monitoring
f. Fan status switch monitoring
*18. Staged Gas Heat (48A2,A4 only):
The control shall have the option for control of
the gas heat to a discharge air temperature by
sequencing on the gas cells to provide up to
11 stages of capacity. The control shall be
integrated directly into the main unit controls
and shall include leaving air temperature
sensors to ensure that high temperatures do not
occur during the operation of the staged gas
heat.
19. BACnet Communication Option:
Shall provide factory installed communication
capability with a BACnet MS/TP network.
108
20.
21.
22.
23.
Allows integration with i-Vu® Open Control
System or a BACnet Building Automation
System.
MODBUS Protocol Translator:
A controller-based accessory module shall provide CCN to MODBUS Remote Terminal Unit
(RTU) protocol conversion.
LonWorks Protocol Translator:
A controller-based accessory module shall provide CCN to LON FT-10A ANSI/EIA-709.1
protocol conversion.
Full Perimeter Roof Curbs (Horizontal and
Vertical):
Shall be formed of 14-gage galvanized steel
with wood nailer strip and shall be capable of
supporting entire unit weight.
Security Grille (48/50A060 Unit with MCHX
Only):
Factory-installed grille shall limit access to compressor and condenser coil area to authorized
personnel only.
Guide specifications — 48/50A3,A5
Packaged Rooftop Cooling Unit and
Packaged Rooftop Cooling Unit With Gas
Heat — Variable Air Volume Application
HVAC Guide Specifications —
Section 48/50A3,A5
Size Range: 20 to 60 Tons, Nominal (Cooling)
Carrier Model Number:
48A3, 48A5, 50A3, 50A5
Part 1 — General
1.01 SYSTEM DESCRIPTION
Outdoor roof curb or slab mounted, electronically
controlled heating and cooling unit utilizing hermetic
scroll compressors with crankcase heaters for
cooling duty and gas combustion or electric heating
duty. Units shall discharge supply and return air
vertically or horizontally as shown on contract
drawings. EER shall meet requirements of ASHRAE
Standard 90.1-2007 (effective 1/1/2010).
1.02 QUALITY ASSURANCE
A. Unit shall be rated in accordance with AHRI Standard 340/360, latest edition.
B. Unit shall be designed to conform to ANSI/
ASHRAE 15 (latest edition), ASHRAE 62, and UL
Standard 1995.
C. Unit shall be listed by ETL and ETL, Canada as a
total package.
D. 48A3,A5 units shall be designed to conform with
ANSI Standard Z21.47 (U.S.A.) / CSA Standard
2.3 (Canada), Gas-Fired Central Furnaces.
E. Roof curb shall be designed to NRCA criteria per
Bulletin B-1986.
F. Insulation and adhesive shall meet NFPA 90A
requirements for flame spread and smoke
generation.
G. Unit shall be manufactured in a facility registered to
the ISO 9001:2000 manufacturing quality standard.
1.03 DELIVERY, STORAGE AND HANDLING
Unit shall be stored and handled per manufacturer’s
recommendations.
Part 2 — Products
2.01 EQUIPMENT
A. General:
Factory-assembled, single-piece heating and cooling
unit. Contained within the unit enclosure shall be all
factory wiring, piping, refrigerant charge (R-410A),
operating oil charge, dual refrigerant circuits, microprocessor based control system and associated hardware, and all special features required prior to field
start-up.
B. Unit Cabinet:
1. Constructed of galvanized steel, bonderized and
precoated with a baked enamel finish.
a. Top cover shall be 18-gage sheet metal with
0.75-in. thick, 1.5-lb density, fiberglass
insulation.
b. Access panels and doors shall be 20-gage
sheet metal with 0.5-in. thick, 1.5-lb density,
fiberglass insulation.
c. Corner and center posts shall be 16-gage
galvanized steel.
d. Basepans in the heating and return air
sections shall be 16-gage galvanized steel.
e. Basepans in the condenser section shall be
16-gage galvanized steel.
f. Compressor rail shall be 12-gage galvanized
steel.
g. Condensate pan shall be 16-gage aluminized
steel.
h. Air baffles shall be 18-gage galvanized steel
with 0.5-in. thick, 1.5-lb density, fiberglass
insulation.
i. Base rail shall be 14-gage galvanized steel.
j. Fan deck (indoor and outdoor section) shall
be 16-gage galvanized steel.
2. Unit casing shall be capable of withstanding
500-hour salt spray exposure per ASTM B117
(scribed specimen).
3. Sides shall have person-sized insulated hinged
access doors for easy access to the control box
and other areas requiring servicing. Each door
shall seal against a rubber gasket to help prevent air and water leakage and be equipped to
permit ease and safety during servicing.
4. Interior cabinet surfaces shall be sheet metal
lined or insulated with flexible fire-retardant
material, coated on the air side.
5. Unit shall have a factory-installed sloped
condensate drain connection made from an
aluminized steel or optional stainless steel.
6. Equipped with lifting lugs to facilitate overhead
rigging.
7. Filters shall be accessible through a hinged
access panel without requiring any special tools.
C. Fans:
1. Indoor Evaporator Fans:
a. Double-width/double-inlet, centrifugal, belt
driven, forward-curved type with single
outlet discharge.
b. Fan shaft bearings shall be of the pillowblock type with positive locking collar and
lubrication provisions.
c. Statically and dynamically balanced.
d. Evaporator fan shaft bearings shall have a
life of 200,000 hours at design operating
conditions in accordance with ANSI B3.15.
e. Solid fan shaft construction for size 020-050
units and two-piece solid fan shaft construction on the size 060 unit.
109
Guide specifications — 48/50A3,A5 (cont)
2. Condenser Fans:
a. Fans shall be direct-driven propeller type
only, with corrosion-resistant blades riveted
to corrosion resistant steel supports for all
size 020-050 units and the size 060 unit
with optional condenser coil. Size 060 units
with the microchannel condenser coil shall
have a direct driven, 9-blade airfoil cross section, reinforced polymer construction, and
shrouded-axial type fans with inherent corrosion resistance.
b. Discharge air vertically upward and
protected by PVC coated steel wire safety
guards.
c. Statically and dynamically balanced.
3. Supply Fan Drive:
Unit shall be equipped with variable frequency
drive (VFD) inverter. The VFD shall be installed
inside the unit cabinet and shall be factorymounted, wired and tested. The VFD shall control motor speed to maintain set point static
pressure at the sensor tube location of the supply duct pressure transducer (transducer is
factory-provided and installed; sensor tube must
be field-routed). The control system may be
field-adjusted to maintain supply duct static
pressure set points from 0 in. wg to 3.5 in. wg.
The variable frequency drive shall include the
following features:
a. Full digital control with direct control from
the unit ComfortLink™ controls.
b. Insulated Gate Bi-Polar Transistors (IGBT)
used to produce the output pulse width
modulated (PWM) waveform, allowing for
quiet motor operation.
c. Inverters capable of operation at a frequency
of 8 kHz, so no acoustic noise shall be
produced by the motor.
d. Self diagnostics.
e. Personal lockout code for additional security.
f. Critical frequency avoidance.
g. RS485 capability standard.
h. Electronic thermal overload protection.
i. 5% swinging chokes for harmonic reduction
and improved power factor.
j. All printed circuit boards shall be conformal
coated.
D. Compressors:
1. Fully hermetic, scroll type compressors with
overload protection and short cycle protection
with minimum on and off timers.
2. Factory rubber-in-shear mounted for vibration
isolation.
3. Reverse rotation protection capability.
4. Crankcase heaters shall only be activated during
compressor off mode.
110
E. Coils:
1. Standard evaporator coil shall have aluminum
plate fins mechanically bonded to seamless
internally grooved copper tubes with all joints
brazed.
2. Standard condenser coil shall be microchannel
design. The coil shall have a series of flat tubes
containing a series of multiple, parallel flow
microchannels layered between the refrigerant
manifolds. Microchannel coils shall consist of a
two pass arrangement. Coil construction shall
consist of aluminum alloys for the fins, tubes
and manifolds.
3. Coils shall be leak tested at 150 psig and pressure tested at 650 psig.
4. Optional condenser coil shall have aluminum
plate fins mechanically bonded to seamless
internally grooved copper tubes with all joints
brazed.
5. Optional pre-coated aluminum-fin coils shall
have a durable epoxy-phenolic coating to
provide protection in mildly corrosive coastal
environments. Coating shall be applied to the
aluminum fin stock prior to the fin stamping
process to create an inert barrier between the
aluminum fin and copper tube. Epoxy-phenolic
barrier shall minimize galvanic action between
dissimilar metals.
6. Copper-fin coils shall be constructed of copper
fins mechanically bonded to copper tubes and
copper tube sheets. Galvanized steel tube
sheets shall not be acceptable. A polymer strip
shall prevent coil assembly from contacting the
sheet metal coil pan to minimize potential for
galvanic corrosion between coil and pan. All
copper construction shall provide protection in
moderate coastal environments.
7. E-Coated aluminum-fin coils shall have a flexible epoxy polymer coating uniformly applied to
all coil surface areas without material bridging
between fins. Coating process shall ensure
complete coil encapsulation. Color shall be high
gloss black with gloss — 60 deg of 65 to 90%
per ASTM D523-89. Uniform dry film
thickness from 0.8 to 1.2 mil on all surface
areas including fin edges. Superior hardness
characteristics of 2H per ASTM D3363-92A
and cross-hatch adhesion of 4B-5B per ASTM
D3359-93. Impact resistance shall be up to
160 in./lb (ASTM D2794-93). Humidity and
water immersion resistance shall be up to
minimum 1000 and 250 hours respectively
(ASTM D2247-92 and ASTM D870-92).
Corrosion durability shall be confirmed through
testing to be no less than 1000 hours salt spray
per ASTM B117-90. Coil construction shall be
aluminum fins mechanically bonded to copper
tubes.
F. Gas Heating Section (48 Series Only):
1. Induced-draft combustion type with energy
saving direct spark ignition systems and redundant main gas valves.
2. The heat exchanger shall be of the tubular
section type constructed of a minimum of
20-gage steel coated with a nominal 1.2 mil
aluminum-silicone alloy for corrosion resistance. Optional stainless steel heat exchangers
shall be available.
3. Burners shall be of the in-shot type constructed
of aluminum coated steel.
4. All gas piping shall enter the unit cabinet at a
single location.
5. Induced Draft Fans:
a. Direct-driven, single inlet, forward-curved
centrifugal type.
b. Statically and dynamically balanced.
c. Made from steel with a corrosion-resistant
finish.
6. High-corrosion areas such as flue gas collection
and exhaust areas shall be lined with corrosion
resistant material.
G. Refrigerant Components:
Unit shall be equipped with dual refrigerant circuits
each containing:
1. Solid core filter drier.
2. Thermostatic expansion valve.
3. Fusible plug.
H. Filter Section:
Standard filter section shall be supplied with 2-in.
thick disposable fiberglass filters.
I. Controls and Safeties:
1. Unit ComfortLink™ Controls:
a. Scrolling marquee display.
b. CCN (Carrier Comfort Network®) capable.
c. Unit control with standard suction pressure
and condensing pressure transducers.
d. Shall provide a 5° F temperature difference
between cooling and heating set points to
meet ASHRAE 90.1, energy standard.
e. Shall provide and display a current alarm list
and an alarm history list.
f. Automatic compressor redundancy.
g. Service run test capability.
h. Shall accept input from a CO2 sensor (both
indoor and outdoor).
i. Configurable alarm light shall be provided
which activates when certain types of alarms
occur.
j. Compressor minimum run time (3 minutes)
and minimum off time (3 minutes) are
provided.
k. Service diagnostic mode.
l. Optional integrated economizer control or
two-position self-closing adjustable outsideair damper.
m. Minimum of 3 capacity stages of mechanical capacity control (excluding hot gas
bypass) controlled with logic to maintain
supply air temperature set point.
n. Optional minimum load valve for additional
capacity stage.
o. Unit shall be complete with self-contained
low voltage control circuit.
2. Safeties:
a. Unit shall incorporate a solid-state compressor lockout which provides optional reset
capability at the space thermostat should
any of the following safety devices trip and
shut off compressor:
1) Compressor lockout protection provided
for either internal or external overload.
2) Low-pressure protection.
3) Freeze protection (evaporator coil).
4) High-pressure protection (high pressure
switch or internal).
5) Compressor reverse rotation protection.
6) Loss of charge protection.
7) Welded contactor protection.
b. Supply-air sensor shall be located in the unit
and should be used for economizer control
and compressor stage control.
c. Induced draft heating section (48 Series)
shall be provided with the following minimum protections:
1) High-temperature limit switch.
2) Induced-draft motor speed sensor.
3) Flame rollout switch.
4) Flame proving controls.
5) Redundant gas valve.
J. Operating Characteristics:
1. Unit shall be capable of starting and running at
115 F ambient outdoor temperature per maximum load criteria of AHRI Standard 340/360.
2. Unit with standard controls will operate in cooling down to an outdoor ambient temperature of
32 F.
3. Unit shall be provided with fan time delay to
prevent cold air delivery.
K. Electrical Requirements:
All unit power wiring shall enter unit cabinet at a
single location.
L. Motors:
1. Compressor motors shall be cooled by refrigerant gas passing through motor windings and
shall have either internal line break thermal and
current overload protection or external current
overload modules with compressor temperature
sensors.
111
Guide specifications — 48/50A3,A5 (cont)
2. All condenser-fan motors shall be totally
enclosed 3-phase type with permanently
lubricated ball bearings, class F insulation and
internal, automatic-reset thermal overload
protection or manual reset calibrated circuit
breakers.
3. All indoor-fan motors 5 hp and larger shall
meet the minimum efficiency requirements as
established by the Energy Policy Act of 1992
(EPACT), effective October 24, 1997.
M. Special Features:
Certain features are not applicable when the
features designated * are specified. For assistance in
amending the specifications, contact your local
Carrier Sales Office.
* 1. Integrated Economizer:
a. Economizer shall meet the requirements of
ASHRAE 90.1.
b. Economizer shall be furnished and installed
complete with recirculated air dampers, outside air dampers, and controls.
c. All dampers shall be low leakage type and
gear driven.
d. Capable of introducing up to 100% outdoor
air for minimum ventilation as well as free
cooling.
e. Damper actuator shall be gear driven, 24-v
fully modulating design.
f. Economizer outdoor hood shall be
pre-painted.
g. Economizer shall meet the requirements of
the California Energy Commission airside
economizer acceptance test.
* 2. Barometric Relief Damper Package:
a. Package shall include damper, seals, hardware, and hoods to relieve excess internal
pressure.
b. Damper shall close due to gravity upon unit
shutdown.
* 3. Power Exhaust:
Package shall include a multiple exhaust fan
(centrifugal style) fan, 1 Hp 208-230, 460 v
direct-drive motor, and damper for vertical flow
units with economizer to control overpressurization of building. Control shall be
through ComfortLink™ controls based on
optional building pressure sensor. On size 020050 units, 4 stages of control shall be available.
On size 060 units, 6 stages on control shall be
available.
* 4. Liquefied Propane Conversion Kit (48 Series):
Kit shall contain all the necessary hardware and
instructions to convert a standard natural gas
unit for use with liquefied propane gas.
112
* 5. Convenience Outlet:
Shall be factory-installed and internally
mounted with an externally accessible 115-v,
15 amp GFI, female receptacle with hinged
cover. A step-down transformer and overload
protection shall be included so no additional
wiring is necessary unless the field wired outlet
has been requested. When applied with a unitmounted disconnect, the outlet shall be wired to
the load side of the disconnect so the outlet will
shut off with the disconnect.
* 6. Non-Fused Disconnect Switch:
Shall be factory-installed, internally mounted,
and UL approved. Non-fused switch shall
provide unit power shutoff. Shall be accessible
from outside the unit and shall provide power
off lockout capability.
* 7. Electric Heater (50 Series Units Only):
Electric resistance heaters shall be factoryinstalled, nichrome element type, open wire
coils with 0.29 in. inside diameter, insulated
with ceramic bushings, and include operating
and safety controls. Coil ends are staked and
welded to terminal screw slots.
* 8. Hail Guard, Condenser Coil Grille:
Shall protect the condenser coil from hail, flying
debris, and damage by large objects without
increasing unit clearances.
* 9. CO2 Sensor:
The CO2 sensor shall have the ability to
monitor CO2 levels and relay information to the
controller. The controller will use CO2 level
information to modulate the economizer and
provide demand control ventilation. The sensor
shall be available as field installed or factoryinstalled return air sensor or a remote space
sensor.
*10. Return Air Smoke Detector:
The smoke detector shall send input to the
controller to shut down the unit in case smoke
is detected. The smoke detector shall be factory
installed in the return air section or shall be
available as a field-installed accessory.
*11. Filter Status:
The filter status switch shall be a pressure
differential switch and will indicate a dirty filter.
The switch shall be available as field or factory
installed.
*12. Humidity Sensor:
A humidity sensor will allow for outside air
enthalpy changeover control using the standard
outside air dry bulb sensor and the accessory
humidity sensor. When both an outside and
return air humidity sensor are used then differential enthalpy changeover can be supported.
*13. Two-Position Damper:
A two-position damper shall admit up to 25%
outdoor air during fan operation and shall close
when the fan is off. The damper position shall
be mechanically adjustable.
*14. 4-Inch Filters:
Optional filter section shall be supplied with
4-in. thick MERV-8 pleated fiberglass filters.
*15. Control Expansion Module (CEM):
Shall provide the following additional optional
features:
a. Remote set point.
b. Demand limit control.
c. Remote economizer position.
d. Fire and smoke control override control.
e. Remote sensor monitoring.
f. Fan status switch monitoring.
16. Bypass for Supply Fan VFD:
Units may be equipped with an optional manual
bypass switch which allows the supply fan VFD
to be electrically bypassed.
17. BACnet Communication Option:
Shall provide factory installed communication
capability with a BACnet MS/TP network.
Allows integration with i-Vu® Open Control
System or a BACnet Building Automation
System.
18. MODBUS Protocol Translator:
A controller-based module shall provide CCN to
MODBUS Remote Terminal Unit (RTU) protocol conversion.
19. LonWorks Protocol Translator:
A controller-based module shall provide CCN to
LON FT-10A ANSI/EIA-709.1 protocol conversion.
*20. Staged Gas Heat (48A3,A5 only):
The control shall have the option for control of
the gas heat to a discharge air temperature by
sequencing on the gas cells to provide up to
11 stages of capacity. The control shall be
integrated directly into the main unit controls
and shall include leaving air temperature
sensors to ensure that high temperatures do not
occur during the operation of the staged gas
heat.
21. Full Perimeter Roof Curbs (Horizontal and
Vertical):
Shall be formed of 14-gage galvanized steel
with wood nailer strip and shall be capable of
supporting entire unit weight.
22. Security Grille (48/50A060 Unit with MCHX
Only):
Factory-installed grille shall limit access to compressor and condenser coil area to authorized
personnel only.
113
Carrier Corporation • Syracuse, New York 13221
1011
4-11
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Pg 114
Catalog No. 04-52480027-01
Printed in U.S.A.
Form 48/50A-11PD
Section 1 2
Replaces: 48/50A-10PD
Tab
1c 2c
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