Carrier AQUAZONE 50PTH Product data

Product
Data
Aquazone™
50PTH, PTV024-070
Two-Stage Water Source Heat Pumps
with Puron® Refrigerant (R-410A)
2 to 6 Nominal Tons
Single-package horizontally and vertically mounted water source heat
pumps with electronic controls offer:
• Two-stage unloading scroll
compressor
• Variable speed blower motor
• Exclusive double compressor
isolation for ultra-quiet operation
• Available mute package for quieter
operation
• Performance certified to AHRI/ISO
13256-1
• Flexible and reliable multiple
protocol WSHP Open controller can
use BACnet*, Modbus†, N2, and
LonWorks** (with a separate card)
protocols for integrating energy
efficiency and precise unit control
• Hot gas reheat (HGR) available for
dehumidification capability
• Optional tin-plated copper tubing
and polymer coated aluminum fin
air coil available
• Non-ozone depleting Puron
refrigerant (R-410A)
Features/Benefits
Carrier’s Aquazone two-stage
water source heat pump
(WSHP) with Puron
refrigerant (R-410A) is a high
quality, ultra-efficient solution
for all boiler/tower and
geothermal design
applications.
Operating efficiency
Carrier WSHPs are designed for quality and high performance over a lifetime of operation. Two-stage WSHP
models with Puron refrigerant offer
cooling EERs (Energy Efficiency Ratios) to 37.0 and heating COPs (Coefficiency of Performance) to 6.5.
© Carrier Corporation 2015
Form 50PT-10PD
Features/Benefits (cont)
All efficiencies stated are in accordance
with standard conditions under ISO (International Organization for Standardization) Standard 13256-1:1998 and
provide among the highest ratings in
the industry, exceeding ASHRAE
(American Society of Heating, Refrigerating and Air-Conditioning Engineers) 90.1 Energy Standards.
High quality construction and
testing
All units are manufactured to meet
extensive quality control protocol
from start to finish through an automated control system, which provides
continuous monitoring of each unit
and performs quality control checks
as equipment progresses through the
production process. Standard construction features of the Aquazone™ units
include:
Cabinet — Standard unit fabrication
consists of heavy gage galvanized sheet
metal cabinet construction designed for
part standardization (i.e., minimal
number of parts) and modular design.
All interior surfaces are lined with
1/ in. thick, 11/ lb per cubic ft densi2
2
ty, insulation for thermal insulation and
acoustical attenuation. This insulation
is non-combustible, non-hydroscopic
and does not support fungal growth.
Insulation meets NFPA90A and 90B
for fire protection and is certified to
meet the Greenguard Indoor Air Quality Standard for Low Emitting Products.
Compressor — Two-stage models
with Puron® refrigerant (R-410A) offer
a dual level vibration isolation system.
Noise reduction is a critical consideration of the unit design. All units have
a unique floating base. The compressor is mounted on a heavy steel plate
which rests on a high density rubber
pad on the base of the unit. In addition, compressors are mounted on rubber grommets. This double isolation is
standard in all units, preventing vibration and noise transmission from the
compressor to the unit structure, resulting in exceptionally quiet operation.
The compressor has thermal overload
protection and is located in an insulated compartment away from the airstream to minimize sound transmission.
Blower and motor assembly —
Large blower wheels allow the unit to
operate at lower speeds for quieter
operation.
The standard constant-torque ECM
(electronically commutated motor)
blower motor can handle up to 1 in.
wg external static pressure, making it a
wise choice for high filtration applications. The 460-v constant torque ECM
does not require a neutral wire.
Constant airflow ECMs are optional
on units, allowing the user to select the
correct speed to deliver the specified
airflow and the design system static
pressure.
Motors are mounted on the fan
housing with rubber grommets to prevent noise and vibration transmission
to the unit and airstream.
Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
AHRI/ISO Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-11
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-16
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-29
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30,31
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32-36
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37-41
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42-46
2
A 1-in. supply air duct-flange connection is standard, facilitating duct installation on the unit. Horizontal units
are field convertible from right or left
discharge to back discharge.
Refrigeration/water circuit — All
units contain sealed Puron® refrigerant
(R-410A) circuits including a highefficiency Copeland UltraTech™ twostage compressor designed for heat
pump operation, a thermostatic expansion valve for refrigerant metering,
an enhanced corrugated aluminumlanced fin and rifled copper tube
refrigerant-to-air heat exchanger, reversing valve, coaxial (tube-in-tube)
refrigerant-to-water heat exchanger,
and safety controls including a highpressure switch, low-pressure switch,
water coil low temperature sensor, and
air coil low temperature sensor.
AHRI/ISO — Aquazone units have
AHRI (Air-Conditioning, Heating, and
Refrigeration Institute)/ISO, NRTL
(Nationally Recognized Testing Lab), or
ETL labels and are factory tested under
normal operating conditions at nominal water flow rates. Quality assurance
is provided via testing report cards
shipped with each unit to indicate specific unit performance under cooling
and heating modes of operation.
Quiet operation
Fan motor insulation and double isolated compressor are provided for sound
isolation, cabinets are fully insulated to
reduce noise transmission, low speed
blowers are utilized for quiet operation
through reduced outlet air velocities,
and air-to-refrigerant coils are designed
for lower airflow coil face velocities.
Hanging brackets — All horizontal
units come standard with hanging
bracket kits for suspending the unit
from field-supplied hanger rods. These
kits include heavy duty steel brackets
and rubber grommets for sound and vibration isolation from the building
structure.
entering water temperature range between 25 F and 110 F offers maximum
design flexibility for all applications.
Water flow rates as low as 1.5 gpm per
ton assist with selection from a range
of various circulating pumps. Factoryinstalled options are offered to meet
specific design requirements.
Puron® refrigerant (R-410A)
Safe, reliable operation
Puron refrigerant (R-410A) is a nonchlorine based enviromentally balanced, non-ozone depleting refrigerant. Puron refrigerant characteristics,
compared to R-22, have:
• Binary and near azeotropic mixture
of 50% R-32 and 50% R-125.
• Higher efficiencies (50 to 60%
higher operating pressures).
• Virtually no glide. Unlike other
alternative refrigerants, the two
components in Puron refrigerant
have virtually the same leak rates.
Therefore, refrigerant can be added
if necessary without recovering the
charge.
Standard safety features for the refrigerant circuit include high-pressure
switch, low-pressure sensor to detect
loss of refrigerant, and low air temperature sensor to safeguard against freezing. Equipment safety features include
water loop temperature monitoring,
voltage protection, water coil freeze
protection, and standard electronic
condensate overflow shutdown. All
safety features are tested and run at the
factory to assure proper operation of
all components and safety switches.
All components are carefully
designed and selected for endurance,
durability, and carefree day-to-day
operation.
The Aquazone™ unit is shipped to
provide internal and external equipment protection. Shipping supports
are placed under the blower housing
and compressor feet. In addition, horizontal and vertical units are both
mounted on oversized pallets with lag
bolts for sturdiness and maximum protection during transit.
Optional air coil protection
All units come standard with a copper
coil aluminum fin air coil. These air
coils employ lanced fin and rifled tubing for maximum heat transfer. Large
face areas result in lower face velocity
reducing sound while ensuring high latent heat removal for maximum dehumidification in the cooling mode.
Optional tin electro-plated copper
tubing with high-tech polymer coated
aluminum fins protect the air coil from
all forms of corrosive elements in the
airstream. Corrosion often results in
refrigerant leaks and eventual failure of
the air coil costing hundreds of dollars
to replace. Studies have also shown
that these air coil coatings improve
moisture shedding and therefore improve a unit’s moisture removal capability resulting in a more comfortable
indoor environment. The 50PTH,
PTV units assure both maximum air
coil life and comfort.
Design flexibility
Airflow configurations for horizontal
units are available in four patterns including left or right return, and left,
right, or back discharge. Horizontal
and downflow units are field convertible from left or right discharge to back
discharge. Vertical units are available in
three airflow patterns including top
discharge with right or left return.
Standard entering water temperature is
between 50 and 100 F. Extended
Ease of installation
The Aquazone unit is packaged for
simple low cost handling, with minimal
time required for installation. All units
are pre-wired and factory charged with
refrigerant. Horizontal units are provided with hanger isolation brackets. Vertical units are provided with an internally trapped condensate drain to reduce labor associated with installing an
external trap for each unit. Water connections and condensate drains (FPT)
are anchored securely to the unit
cabinet.
Simple maintenance and
serviceability
The Aquazone water source heat
pump (WSHP) units are constructed to
provide ease of maintenance. Units
allow access to the compressor section
from 2 sides and have large removable
panels for easy access. Additional panels are provided to access the blower
and control box sections.
The blower housing assembly can be
serviced without disconnecting ductwork from the dedicated blower access
panel. Blower units are provided with
permanently lubricated bearings for
worry-free performance. Blower inlet
rings allow removal of the blower
wheel without having to remove the
housing or ductwork connections.
Electrical disconnection of the blower motor and control box is easily accomplished from quick disconnects on
each component.
Easy removal of the control box
from the unit provides access to all refrigeration components.
The refrigeration circuit is easily tested and serviced through the use of
high and low pressure ports integral to
the refrigeration circuit.
Maximum control flexibility
Aquazone water source heat pumps
provide reliable control operation
using a standard microprocessor board
with flexible alternatives for many
direct digital controls (DDC) applications including the open protocol
systems.
The Aquazone™ standard unit solidstate control system, the Complete C,
provides control of the unit compressor, reversing valve, fan, safety features, hot gas reheat, and troubleshooting fault indication features. The
Complete C control system is a user
friendly, low cost, advanced WSHP
control board. Many features are field
selectable to maximize flexibility in field
installation. The overall features of this
standard control system include:
75 va transformer — The transformer
assists in accommodating accessory
loads.
Anti-short cycle timer — Timer provides a minimum off time to prevent the
unit from short cycling. The 5-minute
timer energizes when the compressor is
deenergized, resulting in a 5-minute
delay before the unit can be restarted.
Random start relay — Random start
relay provides a random delay in energizing each different WSHP unit. This
option minimizes peak electrical demand
during start-up from different operating
modes or after building power outages.
High and low pressure refrigerant
protection — This protection safeguards against unreliable unit operation
and prevents refrigerant from leaking.
Condensate overflow sensor —
The electronic sensor is mounted to
the drain pan. When condensate pan
liquid reaches an unacceptable level,
3
Features/Benefits (cont)
unit is automatically deactivated and
placed in a lockout condition. Thirty
continuous seconds of overflow is recognized as a fault by the sensor.
High and low voltage protection
— Safety protection for excessive or
low voltage conditions is included.
Automatic intelligent reset — Unit
will automatically restart 5 minutes
after shutdown if the fault has cleared.
Should a fault occur 3 times sequentially, lockout will occur.
Accessory output — Twenty-four
volt output is provided to cycle a motorized water valve or damper actuator
with compressor in applications such as
variable speed pumping arrangements.
Performance monitor (PM) — This
feature monitors water temperatures to
warn when the heat pump is operating
inefficiently or beyond typical operating
* Sponsored by ASHRAE (American Society of
Heating, Refrigerating, and Air-Conditioning
Engineers).
† Registered trademark of Schneider Electric.
** Registered trademark of Echelon Corporation.
4
range. Field selectable switch initiates a
warning code on the unit display.
Water coil freeze protection (selectable for water or antifreeze) — Field
selectable switch for water and water/
glycol solution systems initiates a fault
when temperatures exceed the selected
limit for 30 continuous seconds.
Air coil freeze protection (check
filter operation) — Field selectable
switch for assessing excessive filter
pressure drop initiates a fault when
temperatures exceed the selected limit
for 30 continuous seconds.
Alarm relay setting — Selectable
24 v or pilot duty dry contact provides
activation of a remote alarm.
Electric heat option — The output
provided on the controller operates
two stages of emergency electric heat.
Service Test mode with diagnostic
LED (light-emitting diode) — The
Test mode allows service personnel to
check the operation of the WSHP and
control system efficiently. Upon entering Test mode, time delays are sped up,
and the Status LED will flash a code to
indicate the last fault experienced for
easy diagnosis. Based on the fault code
flashed by the status LED, system diagnostics are assisted through the use of
Carrier provided troubleshooting tables
for easy reference to typical problems.
LED visual output — An LED panel
indicates high pressure, low pressure,
low voltage, high voltage, air/water
freeze protection, condensate overflow, and control status.
Model number nomenclature
50PTH,PTV PREMIUM EFFICIENCY
50PTV 024 J C C 3 A C A X
Aquazone™ Two-Stage Water Source Heat
Pump with Puron® Refrigerant (R-410A)
Factory-Installed Opons
Electic Heat
024 –
036 –
048 –
060 –
070 –
2
3
4
5
6
Std MERV8 MERV13
Filter Filter Filter
None
5 kW Electric Heat
10 kW Electric Heat
X
A
C
Y
B
F
Z
W
R
15 kW Electric Heat
20 kW Electric Heat
D
E
G
T
S
H
Operating Range/Sound Option/Insulation
Horizontal
Extended Range
B –
E –
N –
P –
S –
W–
Y –
Z –
Right
Left
Right
Right
Left
Left
Left
Right
End
Right (Straight)
Left (Straight)
End
End
End
Right (Straight)
Left (Straight)
Constant Torque ECM
Constant Torque ECM
Constant Airflow ECM
Constant Airflow ECM
Constant Torque ECM
Constant Airflow ECM
Constant Airflow ECM
Constant Torque ECM
Left
Right
Left
Right
Top
Top
Top
Top
Constant Airflow ECM
Constant Airflow ECM
Constant Torque ECM
Constant Torque ECM
Vertical
J
K
L
R
–
–
–
–
C – Standard C Microprocessor Control Package
D – Deluxe D Microprocessor Control Package
W – WSHP Open with C Microprocessor Control
Insulation
Standard
1/2" Closed Cell Foam
Std
A
D
Mute
J
F
Valve Option
A – 2-Way Solenoid
C – None
D – Internal Pump
A
Voltage
3 – 208/230-1-60
4 – 265-1-60
5 – 208/230-3-60
6 – 460-3-60
C – 208/230-1-60 with Disconnect
D – 265-1-60 with Disconnect
E – 208/230-3-60 with Disconnect
F – 460-3-60 with Disconnect
Refrigerant and Water Circuit Options
Option
Standard
Hot Gas Reheat
ECM
Non-Coated Air Coil
Cu
CuNi
C
N
E
P
Coated Air Coil
Cu
CuNi
A
J
D
F
LEGEND
— Electronically Commutated Motor
5
AHRI/ISO capacity ratings
50PTH, 50PTV FULL LOAD APPLICATIONS
WATER LOOP HEAT PUMP
COOLING 86 F
HEATING 68 F
CAPACITY
CAPACITY
EER
Btuh/W
COP
Btuh
Btuh
25,500
17.4
29,200
5.6
39,000
19.0
42,800
5.6
49,200
16.6
56,100
5.3
63,800
17.0
73,300
5.2
71,600
16.3
84,000
5.1
UNIT
SIZE
024
036
048
060
070
AHRI
COP
EER
ISO
—
—
—
—
LEGEND
Air-Conditioning and Refrigeration Institute
Coefficient of Performance
Energy Efficiency Ratio
International Organization for Standardization
GROUND WATER HEAT PUMP
COOLING 59 F
HEATING 50 F
CAPACITY
CAPACITY
EER
Btuh/W
COP
Btuh
Btuh
29,000
26.5
23,500
4.9
43,300
28.0
35,900
5.1
55,300
25.3
46,300
4.7
70,200
24.4
60,300
4.6
78,700
23.1
70,000
4.5
GROUND LOOP HEAT PUMP
COOLING 77 F
HEATING 32 F
CAPACITY
CAPACITY
EER
Btuh/W
COP
Btuh
Btuh
26,600
19.9
18,000
4.1
40,800
22.3
28,400
4.3
51,300
19.3
36,900
4.0
65,100
18.9
48,000
3.9
73,700
18.5
55,300
3.8
NOTES:
1. A brine-to-air heat pump using a brine solution circulating through a subsurface
piping loop functioning as a heat source/heat sink.
2. The heat exchange loop may be placed in horizontal trenches or vertical bores,
or submerged in a body of surface water.
3. The temperature of the brine is related to the climatic conditions and may vary
from 20 F to 120 F.
4. Certified in accordance with the AHRI/ISO Standard 13256-1 Certification Program, with 15% antifreeze solution.
5. Table does not reflect fan or pump power connections for AHRI/ISO conditions.
50PTH, 50PTV PART LOAD APPLICATIONS
WATER LOOP HEAT PUMP
COOLING 86 F
HEATING 68 F
CAPACITY
CAPACITY
EER
Btuh/W
COP
Btuh
Btuh
18,500
18.9
21,200
6.5
29,000
22.2
31,000
6.5
36,700
18.9
40,900
6.2
47,500
18.7
53,600
5.8
55,200
17.8
64,900
5.7
UNIT
SIZE
024
036
048
060
070
AHRI
COP
EER
ISO
6
—
—
—
—
LEGEND
Air-Conditioning and Refrigeration Institute
Coefficient of Performance
Energy Efficiency Ratio
International Organization for Standardization
GROUND WATER HEAT PUMP
COOLING 59 F
HEATING 50 F
CAPACITY
CAPACITY
EER
Btuh/W
COP
Btuh
Btuh
21,700
33.6
16,700
5.1
32,600
37.0
25,200
5.2
42,000
33.8
33,700
5.2
53,300
31.2
44,300
4.8
60,800
28.5
52,900
4.8
GROUND LOOP HEAT PUMP
COOLING 68 F
HEATING 41 F
CAPACITY
CAPACITY
EER
Btuh/W
COP
Btuh
Btuh
21,000
28.1
14,400
4.4
31,900
32.0
22,400
4.7
39,900
27.8
29,800
4.5
51,600
26.5
39,800
4.4
60,300
25.4
46,900
4.3
NOTES:
1. A brine-to-air heat pump using a brine solution circulating through a subsurface
piping loop functioning as a heat source/heat sink.
2. The heat exchange loop may be placed in horizontal trenches or vertical bores,
or submerged in a body of surface water.
3. The temperature of the brine is related to the climatic conditions and may vary
from 20 F to 120 F.
4. Certified in accordance with the AHRI/ISO Standard 13256-1 Certification Program, with 15% antifreeze solution.
5. Table does not reflect fan or pump power connections for AHRI/ISO conditions.
Physical data
PHYSICAL DATA — 50PTH, PTV 024-070 UNITS
UNIT 50PTH, PTV
024
036
COMPRESSOR
048
060
070
114
Scroll
REFRIGERANT CHARGE 50PTV (oz)
58
98
88
110
REFRIGERATION CHARGE 50PTH ONLY (oz)
64
85
77
100
114
450/3,100
450/3,100
450/3,100
450/3,100
450/3,100
MAXIMUM WATER WORKING PRESSURE (psig/kPa)
ECM CONSTANT TORQUE - FAN MOTOR/BLOWER
Fan Motor Type/Speeds
Fan Motor (Hp)
Blower Wheel Size (D x W) (in.)
0.33
10 x 8
Constant Torque ECM / 5 speed
0.75
0.75
1.00
11 x 9
11 x 9
11 x 11
1.00
11 x 11
ECM CONST AIRFLOW - FAN MOTOR/BLOWER
Fan Motor Type/Speeds
Fan Motor (Hp)
Blower Wheel Size (D x W) (in.)
0.33
10 x 8
Constant Airflow ECM / 3 speed
0.75
0.75
1.00
11 x 9
11 x 9
11 x 11
1.00
11 x 11
WATER CONNECTION SIZE
FPT
Coaxial Coil Volume (gal.)
VERTICAL CABINET
Air Coil
Dimensions (H x W) (in.)
Nominal Size Standard Filter - 2-in. MERV11 (L x H) (in.)
Weight (lb)
Operating
Shipping
HORIZONTAL CABINET
Air Coil
Dimensions (H x W) (in.)
Nominal Size Standard Filter - 2-in. MERV11 (L x H) (in.)
Weight (lb)
Operating
Shipping
3/4
0.33
1
1.18
1
0.62
1
1.07
1
1.12
24 x 20
24 x 24 (1)
32 x 26
16 x 30 (2)
32 x 26
16 x 30 (2)
38 x 26
20 x 30 (2)
38 x 26
20 x 30 (2)
250
350
360
475
340
450
410
530
440
560
18 x 31.5
18 x 18 (2)
20 x 42
20 x 24 (2)
20 x 42
20 x 24 (2)
20 x 49
18 x 20 (3)
20 x 49
18 x 20 (3)
260
360
375
495
355
470
430
550
460
580
LEGEND
ECM — Electronically Commutated Motor
7
Options and accessories
ITEM
Cupronickel Heat Exchanger
Sound Attenuation Package
1/ in. Closed Cell Foam
2
Extended Range Units
Hot Gas Reheat
Air Coil Protection
Two-Way Solenoid Control
Valve
Internal Pump
Electric Heater
Constant Torque ECM
Constant Airflow ECM
Deluxe D Microprocessor
Control Board
WSHP Open Multi-Protocol
Controller
WSHP Open Equipment
Touch™ Device
WSHP Open System Touch™
Device
WSHP Open ZS Sensor
Supply and Return Water
Hose Kits
Electric Duct Heaters
Edge® Pro 7-Day
Programmable Thermostat
FACTORYINSTALLED
OPTION
X
X
X
X
X
X
FIELDINSTALLED
ACCESSORY
X
X
X
X
X
X
X
X
X
X
X
X
X
Factory-installed options
Cupronickel heat exchangers are available for higher
corrosion protection for applications such as open tower,
geothermal, etc. Consult the water quality guidelines for
proper application and selection of this option.
Sound attenuation package (mute package) is available for applications that require especially low noise levels. With this option, a compressor blanket is installed.
1/ -in. closed cell foam provides a 1/ -in. thick, closed
2
2
cell foam insulation to help aid indoor air quality (IAQ) and
to further attenuate low frequency noise from the compressor compartment. The closed-cell foam insulation option is
available in all unit sizes.
Extended range units insulate the coaxial coil to prevent
condensation, and therefore potential dripping problems,
in applications where the entering water temperature is
below the normal operating range (less than 50 F). Units
are capable of operating at a range of 25 to 110 F.
Hot gas reheat (HGR) allows the unit to not only control
space temperature, but also control humidity levels within
the conditioned space. Both a thermostat and humidistat
are needed for hot gas reheat operation. Once the thermostat reaches the set point temperature and if the humidity
in the space is above set point, the factory-installed unit
control board will energize the reheat valve allowing hot
gas to flow from the compressor to the hot gas reheat coil
downstream of the air coil. The cool, moist air leaving the
air coil is now reheated to produce warmer, dryer air. The
call for sensible cooling will always take precedence over
the call for dehumidification, so if at any point the space
8
temperature rises above set point, the hot gas reheat is
turned off allowing for cooling only.
The hot gas reheat coil and reheat valve are factory
installed and factory wired to the unit controller. For hot
gas reheat performance data consult the WSHP Builder
selection software.
Air coil protection provides optional tin electro-plated
copper tubing with high-tech polymer coated aluminum
fins will protect the air coil from all forms of corrosive elements in the airstream.
Two-way solenoid control valve is optional on all unit
sizes and is mounted internal to the unit. The valve opens
to allow full fluid flow to the coaxial coil when there is a call
for heating or cooling, and shuts when no call for heating
or cooling exists.
Internal pump is optional on all size units but cannot be
used in conjunction with the two-way solenoid valve. The
internal pump is an internally mounted ON/OFF circulating pump.
Electric heater is optional on all vertical units with top
discharge and all horizontal units with end discharge configurations. Electric heaters are available in 5, 10, 15 and
20 kW at 208/230v in either single or three phase. Electric heaters are installed internal to the unit on the discharge of the fan.
Fan motor options
Constant torque ECMs are standard on all size units, and
provide the efficiency and operability of an ECM at a lower
cost than a constant airflow ECM. Constant torque ECMs
provide 5 available motor speed settings and will maintain
a constant motor torque as external static pressure in the
system increases. As the system static pressure increases,
reduction in fan airflow with a constant torque ECM is minor.
Constant airflow ECMs are optional on all size units and
will maintain a constant unit airflow as the static pressure
in the system increases. Constant airflow ECMs provide
only 3 available speed settings.
Deluxe D microprocessor control board provides all
of the options on the standard Complete C control board
in addition to the following:
• Phase Monitor - Prevent motors from running at temperatures above approved ratings, and provides protection against phase loss, phase reversal, and phase
unbalance.
• Boilerless Control - For use when the desired means of
heating will be via an electric heater, and no boiler is
installed in a water loop system.
• Energy Management Switch - Enables a 24 vac external
signal to control the operation of the WSHP.
• Pump-Valve Relay - Provides a signal between an isolation valve and a secondary pump.
COMPLETE C AND DELUXE D BOARD CAPABILITIES
CAPABILITY
COMPLETE C BOARD
DELUXE D BOARD
High and low refrigerant pressure switches
Fluid temperature (freeze) protection
X
X
X
Condensate overflow protection sensor
X
X
Air temperature (freeze) protection
X
X
Anti-short cycle timer
X
X
Random start relay
X
X
Low pressure bypass timer
X
X
Surge protection
X
X
Intelligent reset
X
X
Lockout reset
X
X
Malfunction (alarm) output
X
X
Test service mode with LED fault Indication
X
X
Dehumidification control via hot gas reheat
X
X
Factory-installed electic heater
X
X
Factory-installed internal pump
X
X
Two-stage compressor control
X
X
75 va
75 va
X
X
Transformer
WSHP Open compatibility*
X
Phase monitor (3-phase units only)
X
Boilerless control
X
External LED fault indication
X
Energy management switch
X
Pump-valve relay
X
* WSHP Open installed with Complete C board.
WSHP Open multi-protocol controller — Carrier's
WSHP Open controller is an integrated component of a
Carrier water source heat pump. The WSHP Open controller continuously monitors and regulates water source
heat pump operation with reliability and precision. This
advanced controller features a sophisticated, factory-engineered control program that provides optimum performance and energy efficiency.
The WSHP Open controller is factory installed and programmed to control all factory-installed standard options
including hot gas reheat and waterside economizer as well
as provide boilerless electric heat control and demand controlled ventilation.
The WSHP Open controller is programmed to communicate amongst different protocols including BACnet, N2,
Modus and LonWorks. While the controller is programmed
to operate on Carrier's i-Vu® building automation system
(BAS), the WSHP Open can easily be integrated into a
third party BAS.
NOTE: A separate LON integration card is required for
LonWorks.
Three-speed fan control to provide the most efficient
WSHP operation. All WSHP Open controllers come programmed from the factory with three-speed fan control,
with user selectable low, medium and high fan speeds.
Using the space temperature input, the WSHP Open controller will automatically operate the fan at the lowest of the
3-speeds to maintain space temperature while providing
increased latent heat removal, reduced sound and the lowest fan energy consumption.
NOTE: Three-speed fan control not available with constant
airflow ECM fan motors. Three-speed fan control available
only with constant torque ECM and PSC fan motors.
Intuitive fault detection to allow prolonged operation of the
WSHP. The pre-programmed WSHP Open controller logic
monitors and pre-emptively shuts down a WSHP as an
alarming condition approaches instead of causing a hard
lock out of the WSHP. This way, the WSHP can automatically restart if the fault condition clears within a set amount
of time and a local reset of the WSHP is not required.
Learning Adaptive Optimal Start to transition the WSHP
from unoccupied setpoints to occupied set points in the
most efficient means possible. Over time, the WSHP will
learn and determine the best adjustment rates of the setpoints to provide the most efficient means of shifting the
WSHP to an occupied mode.
Field-installed accessories
WSHP Open Equipment Touch™ and System
Touch™ touchscreen devices have a color LCD display
that allows easy connection to the controllers to view or
change the controller's property values including set points,
schedule equipment, view trends and alarms and more.
The Equipment Touch device provides easy connection to
one controller while the System Touch device can access
up to 60 controllers when wired together as a network.
For more details about the Equipment Touch and System
Touch devices, see either the Equipment Touch or System
Touch Installation and Setup Guide.
9
Options and accessories (cont)
WSHP Open - ZS sensors
Carrier's ZS sensors are the preferred method of monitoring space temperature, humidity and CO2 levels when using the WSHP Open controller.
NOTE: A ZS sensor is required for space temperature with
all WSHP Open controllers. Only a ZS sensor can provide
the necessary space temperature input for the WSHP
Open controller.
Supply and return water hose kits are available as accessories. Hose kits are recommended for connection between the unit and the water loop piping. Hose kits are 24
inches in length, flexible stainless steel and have options
for manual isolation valves with and without autoflow regulators and Y-strainers.
Electric duct heaters are available ranging from 5 to
20 kW of electric heat in all available WSHP voltages.
These slip-in type heaters provide an extra means of auxiliary heat or reheat control.
ELECTRIC DUCT HEATERS
SLIP-IN HEATER
WRAPPER
HEATING
ELEMENTS
TERMINAL OR
CONTROL BOX
ZS SENSOR FEATURES
F
F
i
i
ZS STANDARD
ZS PLUS
ZS PRO
Temp, CO2, Humidity
Neutral Color
FEATURES
X
X
X
X
ZS PRO-F
X
X
X
X
Addressable/Supports Daisy-Chaining
X
X
X
X
Hidden Communication Port
X
X
X
X
Mounts on a Standard 2-in. X 4-in. Electrical Box
X
X
X
X
Occupancy Status Indicator
X
X
X
Push-Button Occupancy Override
X
X
X
Set Point Adjust
X
X
X
Large, Easy-to-Read LCD
X
X
Alarm Indicator
X
X
Fan Speed Control
X
X
Cooling/Heating/Fan Only - Mode Control
X
F to C Conversion Button
X
ZS SENSOR OPTIONS
ZS STANDARD
Temperature with CO2
Temperature with Humidity
Temperature with Humidity and CO2
10
ZS PRO
ZS PRO-F
PART NUMBER
OPTIONS
Temperature Only
ZS PLUS
ZS-CAR
ZSPL-CAR
ZSP-CAR
ZSPF-CAR
ZS-C-CAR
ZSPL-C-CAR
ZSP-C-CAR
ZSPF-C-CAR
ZS-H-CAR
ZSPL-H-CAR
ZSP-H-CAR
ZSPF-H-CAR
ZS-HC-CAR
ZSPL-HC-CAR
ZSP-HC-CAR
ZSPF-HC-CAR
Edge® Pro 7-day programmable thermostat is available for connecting a unit directly to a wall mounted thermostat. The Edge Pro thermostat offers 2-stage heat,
2-stage cool, remote sensor capability, pre-occupancy
purge, soft start, manual/auto changeover, 4 settings per
day, 24 vac, backlit LCD, keypad lockout, no batteries required, 5-minute compressor protection, never lost memory, 3 security levels, and temperature display in degrees F
or C.
EDGE PRO THERMOSTAT
11
12
28.0
28.0
28.0
28.0
036
048
060
070
83.0
83.0
76.0
76.0
64.1
22.7
22.7
22.7
22.7
19.7
E
22.1
22.1
22.1
22.1
54.1
54.1
48.1
48.1
F
3.4
3.4
3.4
3.4
FILTER RACK
52.0
52.0
46.0
46.0
F
COMPRESSOR
CONTROLS
36 in.
Q
BLOWER AND
MOTOR
18 in.
K
R
REFRIGERATION
COMPONENTS
36 in.
CONDENSATE
DRAIN**
WATER IN
Service Access to:
D
L
J
WATER OUT
A
NOTES:
1. All dimensions are shown within ± 0.125 inch.
20.2
20.2
20.2
20.2
M
P
S
N
O
K’
1.3
1.3
1.3
1.3
1.3
L
2.5
2.5
2.5
2.5
2.5
WATER
IN
M
N
8.1
8.1
8.1
8.1
8.1
(2) SUPPLY AIR
DUCT FLANGES
O
11.4
11.4
11.4
11.4
9.9
HEATER
KNOCKOUT
7.5
7.5
7.5
7.5
6.5
P (RH)
Q
R (RH)
R’ (LH)
2.0
2.0
2.0
2.0
2.0
14.2
14.2
11.7
11.7
10.0
6.5
6.5
9.0
9.0
7.5
6.5
6.5
7.7
7.7
7.5
SUPPLY AIR DUCT OPENING
P’ (LH)
13.0
13.0
13.0
13.0
10.8
S
1” FPT
1” FPT
1” FPT
1” FPT
3/4” FPT
WATER
CONNECTIONS
18 X 20 X 1 (3)
18 X 20 X 1 (3)
20 X 24 X 1 (2)
20 X 24 X 1 (2)
18 X 18 X 1 (2)
FILTER SIZE
(4) RETURN
AIR DUCT
FLANGES
E
G
RIGHT HAND RETURN
END DISCHARGE
ELECTRICAL
HEAT
KNOCKOUT
CONDENSATE
DRAIN**
B
(5) HANGING
BRACKETS
H
C
2. Return air and supply air duct flanges shipped unfolded.
3. Dimensions are shown in inches.
4. Specifications subject to change without notice.
5. Add 0.5 in. to the height for base support rails (not shown).
6. Units can be field converted between end discharge and straight through supply air configurations with kits.
7. Hand configuration determined when facing panel with water connections.
11.7
11.7
11.7
11.7
11.7
ELECTRICAL
KNOCKOUT
LEFT HAND RETURN
END DISCHARGE
5.1
5.1
5.1
5.1
5.1
DRAIN
PORT
K
ELECTRIC
HEAT
KNOCKOUT†
ELECTRICAL
KNOCKOUT†
18.3
18.3
18.2
18.2
G
H
J
RETURN AIR
WATER
DUCT
OUT
HEIGHT WIDTH DEPTH WIDTH HEIGHT
19.5
36.1
3.4
34.0
16.2
17.2
D
* When WSHP Open controller is installed increase depth by 1.25 inch.
† Electric heat is an optional feature.
** Condensate drain connection is 3/4-in. FPT.
25.1
024
A
B
C
50PTH
UNIT WIDTH DEPTH* HEIGHT
50PTH024-070 UNITS SUPPLY AIR CONFIGURATION - END DISCHARGE
Dimensions
13
28.0
28.0
28.0
28.0
036
048
060
070
83.0
83.0
76.0
76.0
64.1
22.7
22.7
22.7
22.7
19.7
E
22.1
22.1
22.1
22.1
54.1
54.1
48.1
48.1
F
3.4
3.4
3.4
3.4
FILTER RACK
52.0
52.0
46.0
46.0
M
COMPRESSOR
CONTROLS
36 in.
WATER
IN
REFRIGERATION
COMPONENTS
36 in.
K
CONDENSATE
DRAIN**
BLOWER AND
MOTOR
18 in.
Service Access to:
O
ELECTRIC
HEAT
KNOCKOUT†
N
A
K'
F
D
L
J
H
20.2
20.2
20.2
20.2
K’
1.3
1.3
1.3
1.3
1.3
5.1
5.1
5.1
5.1
5.1
DRAIN
PORT
K
LEFT HAND RETURN
STRAIGHT THROUGH
WATER
IN
WATER
OUT
C
WATER
OUT
18.3
18.3
18.2
18.2
G
H
J
RETURN AIR
WATER
DUCT
OUT
HEIGHT WIDTH DEPTH WIDTH HEIGHT
19.5
36.1
3.4
34.0
16.2
17.2
D
* When WSHP Open controller is installed increase depth by 1.25 inch.
† Electric heat is an optional feature.
** Condensate drain connection is 3/4-in. FPT.
NOTES:
1. All dimensions are shown within ± 0.125 inch.
25.1
024
A
B
C
50PTH
DEPTH
UNIT WIDTH
HEIGHT
*
M
N
8.1
8.1
8.1
8.1
8.1
E
O
11.4
11.4
11.4
11.4
9.9
HEATER
KNOCKOUT
2.0
2.0
2.0
2.0
2.0
P (RH)
Q
R (RH)
R’ (LH)
7.5
7.5
7.5
7.5
6.5
14.2
14.2
11.7
11.7
10.0
15.1
15.1
12.9
12.9
11.8
15.1
15.1
12.9
12.9
11.8
SUPPLY AIR DUCT OPENING
P’ (LH)
13.0
13.0
13.0
13.0
10.8
S
1” FPT
1” FPT
1” FPT
1” FPT
3/4” FPT
WATER
CONNECTIONS
18 X 20 X 1 (3)
18 X 20 X 1 (3)
20 X 24 X 1 (2)
20 X 24 X 1 (2)
18 X 18 X 1 (2)
FILTER SIZE
(5) HANGING
BRACKETS
RETURN AIR
RIGHT HAND RETURN
STRAIGHT THROUGH
G
B
(2) SUPPLY AIR
DUCT FLANGE
Q
R'
P'
S
ELECTRIC
HEAT
KNOCKOUT†
ELECTRICAL
KNOCKOUTS†
2. Return air and supply air duct flanges shipped unfolded.
3. Dimensions are shown in inches.
4. Specifications subject to change without notice.
5. Add 0.5 in. to the height for base support rails (not shown).
6. Units can be field converted between end discharge and straight through supply air configurations with kits.
7. Hand configuration determined when facing panel with water connections.
11.7
11.7
11.7
11.7
11.7
ELECTRICAL
KNOCKOUT
RETURN AIR
2.5
2.5
2.5
2.5
2.5
WATER
IN
L
50PTH024-070 UNITS SUPPLY AIR CONFIGURATION - STRAIGHT THROUGH
14
A
C
D
LEFT HAND RETURN - TOP VIEW
D
A
A
B
C
C
A
B
D
RIGHT HAND RETURN - TOP VIEW
E
D
A
C
B
32.817
33.972
33.972
45.573
45.573
A
2.634
2.634
2.634
2.634
2.634
C
65.225
77.125
77.125
84.125
84.125
D
2.634
2.634
2.634
2.634
2.634
E
1.125
1.125
1.125
1.125
1.125
E
A
1:1
Ø 7/8
NOTES:
1. All dimensions are within ± 0.125 inch.
2. All dimensions are shown in inches.
3. Specifications subject to change without notice.
4. Dimension “E” is typical for all models, configurations and
bracket positions.
50PTH
UNIT
024
036
048
060
070
50PTH024-070 UNITS HANGING BRACKET SPECIFICATIONS
Dimensions (cont)
15
25.8
27.0
27.0
048
060
070
D H
COMPRESSOR
CONTROLS
36 in.
33.4
33.4
33.4
33.4
27.4
61.8
61.8
52.4
52.4
44.4
E
B
G
BLOWER AND
MOTOR
18 in.
Service Access to:
C
25.8
036
E
41.0
41.0
32.9
32.9
30.5
30.5
30.5
30.5
F
3.3
3.3
3.3
3.3
FILTER RACK
28.4
28.4
28.4
28.4
38.7
38.7
30.6
30.6
REFRIGERATION
COMPONENTS
36 in.
T
U
M
ELECTRICAL
KNOCKOUTS
N
F
A
5.8
5.8
5.8
5.8
3.1
3.1
3.1
3.1
W
V
LEFT HAND RETURN
ELECTRIC HEATER
KNOCKOUT†
14.9
14.9
14.9
14.9
11.7
11.7
11.7
11.7
L
T
U
WATER IN
J
CONDENSATE
DRAIN**
K
9.6
9.6
10.8
10.8
9.6
9.6
10.8
10.8
14.1
14.1
11.7
11.7
14.1
14.1
11.7
11.7
1.9
1.9
1.9
1.9
8.9
8.9
8.9
8.9
V
W
RIGHT HAND RETURN
A
F
RETURN
AIR DUCT
FLANGES
NOTES:
1. All dimensions are shown within ± 0.125 inch.
2. Return air and supply air duct flanges shipped unfolded.
3. Dimensions are shown in inches.
4. Specifications subject to change without notice.
5.7
5.7
5.7
5.7
WATER OUT
8.1
8.1
8.1
8.1
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
1” FPT
1” FPT
1” FPT
1” FPT
RETURN AIR
DUCT FLANGES
SUPPLY AIR
DUCT FLANGES
SUPPLY AIR
DUCT FLANGES
20 X 30 X 2 (2)
20 X 30 X 2 (2)
16 X 30 X 2 (2)
16 X 30 X 2 (2)
G
H
J
K
L
M
N
P
T (LH) T (RH) U (LH) U (RH) V (LH) V (RH) W (LH) W (RH)
RETURN AIR
WATER
WATER DRAIN WATER ELECTRICAL HEATER
DUCT
CONNECTIONS FILTER SIZE
SUPPLY AIR DUCT OPENING
OUT PORT
IN
KNOCKOUT KNOCKOUT
HEIGHT WIDTH DEPTH WIDTH HEIGHT
24.9
24.5
3.3
22.3
22.4
12.1
5.8
3.1
11.7
8.1
5.7
8.7
8.7
10.0
10.0
1.9
8.0
10.8
10.8
3/4” FPT
24 X 24 X 2 (1)
D
* When WSHP Open controller is installled increase depth by 1.25 inches.
† Electric heat is an optional feature.
** Condensate drain connection is 3/4-in. FPT.
24.0
024
A
B
C
50PTV
UNIT WIDTH DEPTH HEIGHT
*
50PTV024-070 UNITS
Dimensions (cont)
50PTH 024-070 CORNER WEIGHTS
LEFT HAND EVAPORATOR
RIGHT
LEFT
FRONT*
BACK
(lb)
(lb)
74
68
RIGHT HAND EVAPORATOR
RIGHT
LEFT
FRONT*
BACK
(lb)
(lb)
74
61
RIGHT
BACK
(lb)
61
LEFT
FRONT*
(lb)
60
92
94
104
RIGHT
BACK
(lb)
68
UNIT SIZE
024
TOTAL
(lb)
260
LEFT
FRONT*
(lb)
60
036
375
94
048
355
84
109
88
81
84
109
81
88
060
430
107
124
104
105
107
124
105
104
070
460
117
136
105
111
117
136
111
105
104
95
92
95
* Front is control box end.
LEGEND AND NOTES FOR PAGES 17-26
LEGEND
COP
db
EER
EWT
FOH
MBtuh
wb
16
—
—
—
—
—
—
—
Coefficient of Performance
Dry Bulb
Energy Efficiency Ratio
Entering Water Temperature (F)
Feet of Heat
Btuh in Thousands
Wet Bulb
NOTES:
1. Interpolation is permissible; extrapolation is not.
2. AHRI/ISO certified conditions are 80.6 F db and 66.2 F wb in cooling and 68 F db in heating.
3. Table does not reflect fan or pump power corrections for AHRI/ISO
conditions.
4. Operation below 40 F EWT is based on a 15% antifreeze solution.
5. See Carrier WSHP Builder selection software for operating conditions other than those listed.
Performance data
50PTH,PTV024
650 CFM AT 0.34-in. ESP — PART LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
0.7
3
75/63
(1.7)
80/67
85/71
1.3
4
50
75/63
(2.9)
80/67
85/71
2.6
6
75/63
(5.9)
80/67
85/71
0.7
3
75/63
(1.6)
80/67
85/71
1.2
60
4
75/63
(2.8)
80/67
85/71
2.5
6
75/63
(5.7)
80/67
85/71
0.7
3
75/63
(1.6)
80/67
85/71
1.2
70
4
75/63
(2.7)
80/67
85/71
2.4
6
75/63
(5.5)
80/67
85/71
0.6
3
75/63
(1.5)
80/67
85/71
1.1
80
4
75/63
(2.6)
80/67
85/71
2.3
6
75/63
(5.4)
80/67
85/71
0.6
3
75/63
(1.5)
80/67
85/71
1.1
85
4
75/63
(2.5)
80/67
85/71
2.3
6
75/63
(5.3)
80/67
85/71
0.6
3
75/63
(1.5)
80/67
85/71
1.1
4
90
75/63
(2.5)
80/67
85/71
2.3
6
75/63
(5.2)
80/67
85/71
0.6
3
75/63
(1.4)
80/67
85/71
1.0
4
100
75/63
(2.4)
80/67
85/71
2.2
6
75/63
(5.0)
80/67
85/71
0.6
3
75/63
(1.4)
80/67
85/71
1.0
110
4
75/63
(2.4)
80/67
85/71
2.1
6
75/63
(4.9)
80/67
Total
Capacity
(MBtuh)
20.0
20.0
21.3
22.7
20.4
21.8
23.2
20.8
22.2
23.7
19.0
20.3
21.6
19.4
20.7
22.0
19.8
21.1
22.5
18.0
19.2
20.4
18.3
19.6
20.9
18.7
20.0
21.3
17.0
18.1
19.3
17.3
18.5
19.7
17.6
18.9
20.1
16.4
17.5
18.7
16.8
17.9
19.1
17.1
18.3
19.5
15.9
17.0
18.1
16.2
17.3
18.5
16.5
17.7
18.9
14.8
15.8
16.9
15.1
16.2
17.2
15.4
16.5
17.6
13.7
14.7
15.7
14.0
15.0
16.0
14.2
15.3
Sensible
Capacity
(MBtuh)
15.8
15.8
16.3
16.8
16.0
16.5
16.9
16.2
16.7
17.1
15.4
15.9
16.3
15.6
16.0
16.5
15.7
16.2
16.7
15.0
15.5
16.0
15.1
15.6
16.1
15.3
15.8
16.3
14.5
15.1
15.5
14.6
15.2
15.7
14.8
15.3
15.9
14.3
14.9
15.3
14.4
15.0
15.5
14.6
15.1
15.6
14.1
14.6
15.1
14.2
14.8
15.3
14.3
14.9
15.4
13.6
14.2
14.7
13.7
14.3
14.9
13.9
14.4
15.0
13.2
13.7
14.3
13.3
13.9
14.4
13.4
14.0
Heat of
Power
Rejection Input
(MBtuh)
(kW)
22.5
0.77
22.5
0.77
23.8
0.76
25.1
0.76
22.8
0.74
24.1
0.73
25.6
0.72
23.1
0.71
24.5
0.70
26.0
0.69
21.7
0.86
23.0
0.85
24.3
0.84
22.0
0.82
23.3
0.81
24.6
0.80
22.3
0.79
23.6
0.78
25.0
0.77
21.0
0.96
22.2
0.95
23.4
0.94
21.2
0.92
22.5
0.91
23.7
0.90
21.5
0.89
22.8
0.87
24.1
0.86
20.2
1.08
21.4
1.07
22.6
1.06
20.5
1.04
21.6
1.03
22.9
1.02
20.7
1.00
21.9
0.99
23.1
0.97
19.9
1.14
21.0
1.13
22.2
1.13
20.1
1.10
21.2
1.09
22.4
1.08
20.3
1.06
21.5
1.05
22.7
1.03
19.5
1.21
20.7
1.20
21.8
1.20
19.7
1.17
20.9
1.16
22.0
1.15
20.0
1.13
21.1
1.12
22.3
1.10
18.9
1.36
19.9
1.36
21.0
1.35
19.0
1.32
20.1
1.31
21.2
1.30
19.2
1.28
20.3
1.26
21.5
1.25
18.3
1.53
19.3
1.53
20.3
1.52
18.4
1.48
19.4
1.48
20.5
1.47
18.5
1.44
19.6
1.43
EER
25.8
25.8
27.8
30.0
27.4
29.7
32.1
29.1
31.5
34.3
22.1
23.9
25.7
23.5
25.4
27.4
25.0
27.0
29.3
18.7
20.2
21.6
19.8
21.5
23.2
21.1
22.9
24.7
15.8
16.9
18.2
16.7
18.0
19.4
17.6
19.1
20.7
14.4
15.4
16.6
15.2
16.4
17.6
16.1
17.4
18.8
13.1
14.1
15.1
13.8
14.9
16.1
14.6
15.8
17.1
10.9
11.6
12.5
11.4
12.3
13.2
12.0
13.0
14.0
9.0
9.6
10.3
9.4
10.1
10.8
9.8
10.6
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
12.8
9.6
1.01
3.7
0.8
70
12.4
8.9
1.13
3.2
(1.8)
80
12.1
8.1
1.26
2.8
60
13.1
10.0
1.01
3.8
1.3
30
70
12.7
9.2
1.13
3.3
(3.1)
80
12.3
8.4
1.27
2.9
60
13.5
10.4
1.02
3.9
2.8
70
13.1
9.5
1.14
3.4
(6.4)
80
12.6
8.7
1.27
2.9
60
14.8
11.6
1.03
4.2
0.8
70
14.3
10.7
1.15
3.7
(1.8)
80
13.9
9.9
1.28
3.2
60
15.2
12.0
1.03
4.3
1.3
40
70
14.9
11.2
1.15
3.8
(3.0)
80
14.3
10.3
1.28
3.3
60
15.7
12.5
1.03
4.5
2.7
70
15.4
11.6
1.15
3.9
(6.1)
80
14.7
10.7
1.29
3.4
60
16.9
13.6
1.04
4.8
0.7
70
16.4
12.7
1.16
4.2
(1.7)
80
16.0
11.8
1.30
3.6
60
17.4
14.2
1.04
4.9
1.2
50
70
16.9
13.2
1.16
4.3
(2.9)
80
16.5
12.3
1.30
3.7
60
18.1
14.8
1.04
5.1
2.6
70
17.4
13.7
1.16
4.4
(5.9)
80
16.9
12.7
1.30
3.8
60
19.0
15.8
1.04
5.4
0.7
70
18.5
14.8
1.17
4.7
(1.6)
80
18.0
13.8
1.31
4.0
60
19.7
16.4
1.04
5.6
1.2
60
70
19.1
15.4
1.17
4.8
(2.8)
80
18.6
14.4
1.31
4.2
60
20.4
17.1
1.04
5.8
2.5
70
19.7
16.0
1.17
4.9
(5.7)
80
19.1
14.9
1.31
4.3
60
21.3
18.0
1.04
6.0
0.7
70
20.7
16.9
1.17
5.2
(1.6)
80
20.1
15.9
1.32
4.5
60
22.0
18.7
1.04
6.2
1.2
70
70
21.3
17.6
1.17
5.3
(2.7)
80
20.7
16.5
1.32
4.6
60
22.8
19.5
1.04
6.5
2.4
70
22.1
18.3
1.17
5.6
(5.5)
80
21.4
17.1
1.32
4.7
60
23.5
20.3
1.03
6.7
0.7
70
22.9
19.2
1.17
5.8
(1.5)
80
22.3
18.0
1.32
5.0
60
24.4
21.1
1.03
7.0
1.1
80
70
23.6
19.9
1.16
6.0
(2.6)
80
22.9
18.7
1.32
5.1
60
25.3
22.1
1.03
7.2
2.3
70
24.4
20.8
1.16
6.2
(5.4)
80
23.7
19.5
1.32
5.3
Operation Not Recommended
17
Performance data (cont)
50PTH,PTV024
825 CFM AT 0.23-in. ESP — FULL LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
0.7
3
80/67
(1.7)
85/71
75/63
1.3
50
4
80/67
(2.9)
85/71
75/63
2.6
6
80/67
(5.9)
85/71
75/63
0.7
3
80/67
(1.6)
85/71
75/63
1.2
60
4
80/67
(2.8)
85/71
75/63
2.5
6
80/67
(5.7)
85/71
75/63
0.7
3
80/67
(1.6)
85/71
75/63
1.2
70
4
80/67
(2.7)
85/71
75/63
2.4
6
80/67
(5.5)
85/71
75/63
0.6
3
80/67
(1.5)
85/71
75/63
1.1
80
4
80/67
(2.6)
85/71
75/63
2.3
6
80/67
(5.4)
85/71
75/63
0.6
3
80/67
(1.5)
85/71
75/63
1.1
4
85
80/67
(2.5)
85/71
75/63
2.3
6
80/67
(5.3)
85/71
75/63
0.6
3
80/67
(1.5)
85/71
75/63
1.1
90
4
80/67
(2.5)
85/71
75/63
2.3
6
80/67
(5.2)
85/71
75/63
0.6
3
80/67
(1.4)
85/71
75/63
1.0
4
100
80/67
(2.4)
85/71
75/63
2.2
6
80/67
(5.0)
85/71
75/63
0.6
3
80/67
(1.4)
85/71
75/63
1.0
4
110
80/67
(2.4)
85/71
75/63
2.1
6
80/67
(4.9)
85/71
See Legend and Notes on page 16.
18
Total
Capacity
(MBtuh)
27.1
28.9
30.7
27.8
29.6
31.5
28.5
30.4
32.4
25.9
27.5
29.3
26.6
28.2
30.1
27.2
29.0
30.9
24.6
26.2
27.9
25.2
26.9
28.6
25.9
27.6
29.5
23.4
24.9
26.4
23.9
25.5
27.2
24.5
26.2
28.0
22.7
24.1
25.7
23.3
24.8
26.4
23.9
25.4
27.2
22.0
23.5
24.9
22.5
24.0
25.7
23.2
24.7
26.4
20.7
22.1
23.6
21.2
22.7
24.1
21.7
23.2
24.8
19.4
20.7
22.1
19.9
21.3
22.7
20.4
21.8
23.3
Sensible
Capacity
(MBtuh)
20.7
21.2
21.8
21.0
21.6
22.1
21.3
21.9
22.4
20.2
20.8
21.3
20.4
21.1
21.6
20.7
21.3
22.0
19.7
20.2
20.8
19.9
20.5
21.1
20.1
20.8
21.3
19.1
19.7
20.3
19.3
20.0
20.5
19.6
20.3
20.8
18.8
19.5
20.1
19.0
19.7
20.3
19.3
20.0
20.5
18.5
19.2
19.8
18.8
19.4
20.0
19.0
19.6
20.3
18.0
18.7
19.3
18.2
18.9
19.5
18.4
19.1
19.7
17.5
18.2
18.8
17.6
18.3
19.0
17.8
18.6
19.2
Heat of
Power
Rejection Input
(MBtuh)
(kW)
31.3
1.27
33.1
1.29
35.0
1.30
31.8
1.20
33.6
1.22
35.6
1.24
32.3
1.14
34.2
1.15
36.3
1.16
30.4
1.38
32.1
1.40
34.0
1.41
30.9
1.32
32.6
1.34
34.5
1.35
31.4
1.26
33.2
1.27
35.2
1.28
29.4
1.49
31.1
1.51
32.9
1.53
29.9
1.44
31.6
1.45
33.4
1.46
30.4
1.38
32.1
1.39
34.1
1.40
28.5
1.62
30.1
1.64
31.8
1.66
29.0
1.56
30.6
1.58
32.4
1.59
29.4
1.50
31.1
1.52
32.9
1.52
28.0
1.69
29.6
1.71
31.3
1.73
28.5
1.63
30.1
1.65
31.8
1.66
28.9
1.57
30.5
1.58
32.4
1.59
27.7
1.77
29.2
1.79
30.7
1.80
28.0
1.71
29.5
1.72
31.3
1.73
28.4
1.64
30.0
1.66
31.7
1.66
26.8
1.93
28.3
1.95
29.8
1.97
27.1
1.87
28.7
1.88
30.2
1.89
27.4
1.80
29.0
1.81
30.7
1.82
26.1
2.12
27.5
2.14
28.9
2.16
26.4
2.06
27.8
2.07
29.3
2.08
26.6
1.99
28.1
1.99
29.7
2.00
EER
21.4
22.5
23.6
23.1
24.3
25.5
25.1
26.5
27.9
18.8
19.7
20.8
20.2
21.1
22.4
21.6
22.8
24.2
16.5
17.3
18.3
17.6
18.5
19.6
18.8
19.9
21.1
14.4
15.2
16.0
15.3
16.2
17.1
16.3
17.3
18.4
13.4
14.1
14.9
14.3
15.1
16.0
15.2
16.1
17.1
12.5
13.2
13.9
13.2
14.0
14.9
14.1
14.9
15.9
10.7
11.4
12.0
11.4
12.1
12.8
12.1
12.8
13.7
9.2
9.7
10.3
9.7
10.3
11.0
10.3
11.0
11.7
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
18.1
13.5
1.38
3.8
0.8
70
17.6
12.6
1.52
3.4
(1.8)
80
17.4
11.7
1.67
3.0
60
18.6
14.1
1.39
3.9
1.3
30
70
18.2
13.1
1.53
3.5
(3.1)
80
17.8
12.2
1.68
3.1
60
19.3
14.7
1.41
4.0
2.8
70
18.8
13.7
1.55
3.6
(6.4)
80
18.4
12.7
1.69
3.2
60
20.4
15.7
1.43
4.2
0.8
70
20.0
14.8
1.57
3.7
(1.8)
80
19.6
13.9
1.72
3.3
60
21.2
16.5
1.44
4.3
1.3
40
70
20.7
15.5
1.58
3.8
(3.0)
80
20.2
14.5
1.74
3.4
60
22.0
17.3
1.46
4.4
2.7
70
21.5
16.2
1.60
3.9
(6.1)
80
20.9
15.1
1.75
3.5
60
23.1
18.2
1.48
4.6
0.7
70
22.5
17.2
1.62
4.1
(1.7)
80
22.1
16.1
1.78
3.6
60
24.0
19.0
1.50
4.7
1.2
50
70
23.4
18.0
1.64
4.2
(2.9)
80
22.9
16.8
1.80
3.7
60
25.2
20.0
1.52
4.8
2.6
70
24.4
18.9
1.66
4.3
(5.9)
80
23.8
17.7
1.82
3.8
60
25.9
20.8
1.54
4.9
0.7
70
25.3
19.8
1.68
4.4
(1.6)
80
24.9
18.6
1.83
4.0
60
27.0
21.8
1.55
5.1
1.2
60
70
26.3
20.8
1.69
4.5
(2.8)
80
25.8
19.5
1.85
4.1
60
28.2
23.1
1.58
5.2
2.5
70
27.5
21.8
1.72
4.7
(5.7)
80
26.8
20.5
1.87
4.2
60
28.8
23.6
1.59
5.3
0.7
70
28.2
22.5
1.73
4.8
(1.6)
80
27.6
21.3
1.89
4.3
60
30.4
24.8
1.61
5.5
1.2
70
70
29.3
23.6
1.75
4.9
(2.7)
80
29.0
22.2
1.91
4.4
60
31.6
26.2
1.63
5.7
2.4
70
30.7
24.9
1.77
5.1
(5.5)
80
30.2
23.4
1.93
4.6
60
32.2
26.5
1.64
5.8
0.7
70
31.1
25.3
1.78
5.1
(1.5)
80
30.8
23.9
1.94
4.6
60
33.7
27.9
1.66
5.9
1.1
80
70
32.5
26.6
1.81
5.3
(2.6)
80
31.7
25.2
1.97
4.7
60
35.0
29.5
1.69
6.1
2.3
70
34.0
28.0
1.83
5.4
(5.4)
80
33.4
26.3
2.00
4.9
Operation Not Recommended
50PTH,PTV036
800 CFM AT 0.58-in. ESP — PART LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
1.4
4.5
80/67
(3.2)
85/71
75/63
2.3
50
6.0
80/67
(5.4)
85/71
75/63
4.8
9.0
80/67
(11.1)
85/71
75/63
1.3
4.5
80/67
(3.1)
85/71
75/63
2.3
60
6.0
80/67
(5.2)
85/71
75/63
4.6
9.0
80/67
(10.7)
85/71
75/63
1.3
4.5
80/67
(3.0)
85/71
75/63
2.2
70
6.0
80/67
(5.0)
85/71
75/63
4.5
9.0
80/67
(10.4)
85/71
75/63
1.3
4.5
80/67
(2.9)
85/71
75/63
2.1
80
6.0
80/67
(4.8)
85/71
75/63
4.4
9.0
80/67
(10.1)
85/71
75/63
1.2
4.5
80/67
(2.8)
85/71
75/63
2.1
85
6.0
80/67
(4.8)
85/71
75/63
4.3
9.0
80/67
(9.9)
85/71
75/63
1.2
4.5
80/67
(2.8)
85/71
75/63
2.0
6.0
90
80/67
(4.7)
85/71
75/63
4.2
9.0
80/67
(9.7)
85/71
75/63
1.2
4.5
80/67
(2.7)
85/71
75/63
2.0
100
6.0
80/67
(4.6)
85/71
75/63
4.1
9.0
80/67
(9.5)
85/71
75/63
1.1
4.5
80/67
(2.6)
85/71
75/63
1.9
6.0
110
80/67
(4.4)
85/71
75/63
4.0
9.0
80/67
(9.2)
85/71
Total
Capacity
(MBtuh)
29.9
32.0
34.2
30.4
32.5
34.8
30.8
33.1
35.4
28.5
30.5
32.7
29.0
31.1
33.3
29.4
31.6
33.9
27.1
29.1
31.1
27.5
29.6
31.7
27.9
30.0
32.3
25.7
27.5
29.5
26.1
28.0
30.1
26.5
28.4
30.5
24.9
26.8
28.7
25.3
27.2
29.2
25.7
27.6
29.7
24.1
26.0
27.9
24.5
26.4
28.4
24.9
26.8
28.8
22.7
24.4
26.2
23.0
24.8
26.6
23.3
25.1
27.1
21.1
22.8
24.5
21.4
23.1
24.9
21.8
23.5
25.3
Sensible
Capacity
(MBtuh)
21.8
22.4
23.0
22.0
22.7
23.3
22.2
22.8
23.5
21.2
21.9
22.4
21.4
22.1
22.6
21.6
22.3
22.9
20.6
21.2
21.9
20.8
21.4
22.1
21.0
21.6
22.2
19.9
20.7
21.3
20.1
20.8
21.4
20.3
21.0
21.7
19.7
20.3
21.0
19.8
20.5
21.2
19.9
20.7
21.3
19.3
20.1
20.7
19.5
20.2
20.8
19.6
20.3
21.0
18.7
19.4
20.0
18.9
19.5
20.3
19.0
19.7
20.4
18.1
18.8
19.5
18.2
19.0
19.6
18.3
19.1
19.7
Heat of
Power
Rejection Input
(MBtuh)
(kW)
33.2
1.01
35.3
1.00
37.5
0.98
33.6
0.99
35.7
0.97
38.0
0.95
34.0
0.96
36.2
0.94
38.5
0.92
32.1
1.11
34.1
1.10
36.3
1.08
32.4
1.07
34.5
1.06
36.7
1.04
32.8
1.04
34.9
1.02
37.2
1.00
31.0
1.23
33.0
1.22
35.0
1.21
31.3
1.19
33.4
1.18
35.5
1.16
31.7
1.16
33.7
1.14
35.9
1.12
30.1
1.39
31.9
1.38
33.9
1.37
30.3
1.35
32.3
1.33
34.3
1.32
30.6
1.30
32.6
1.29
34.6
1.27
29.6
1.48
31.5
1.47
33.4
1.47
29.9
1.43
31.7
1.42
33.7
1.41
30.1
1.39
32.0
1.37
34.1
1.35
29.1
1.58
30.9
1.57
32.8
1.57
29.3
1.53
31.3
1.52
33.2
1.51
29.6
1.48
31.5
1.47
33.5
1.45
28.3
1.80
30.0
1.79
31.9
1.79
28.5
1.74
30.3
1.73
32.1
1.72
28.7
1.69
30.4
1.68
32.4
1.67
27.5
2.04
29.2
2.04
30.9
2.03
27.7
1.99
29.4
1.98
31.1
1.97
27.8
1.94
29.5
1.92
31.4
1.91
EER
29.6
32.1
34.9
30.9
33.6
36.7
32.0
35.1
38.5
25.7
27.9
30.3
27.0
29.4
32.0
28.2
30.9
33.9
22.0
23.8
25.7
23.1
25.1
27.2
24.2
26.4
28.9
18.5
19.9
21.5
19.4
21.0
22.8
20.4
22.1
24.1
16.8
18.2
19.6
17.7
19.2
20.8
18.5
20.1
21.9
15.3
16.6
17.8
16.0
17.4
18.9
16.8
18.3
19.9
12.7
13.6
14.7
13.2
14.3
15.5
13.8
14.9
16.3
10.3
11.2
12.1
10.8
11.7
12.6
11.3
12.2
13.2
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
18.4
13.6
1.46
3.7
1.5
70
17.9
12.5
1.65
3.2
(3.4)
80
17.7
11.4
1.87
2.8
60
18.8
14.0
1.47
3.8
2.5
30
70
18.3
12.9
1.65
3.2
(5.7)
80
18.0
11.7
1.87
2.8
60
19.3
14.5
1.47
3.8
5.2
70
18.9
13.4
1.66
3.3
(11.9)
80
18.3
12.4
1.87
2.9
60
21.3
16.4
1.48
4.2
1.4
70
20.8
15.3
1.67
3.6
(3.3)
80
20.3
14.1
1.89
3.1
60
21.9
17.0
1.49
4.3
2.4
40
70
21.3
15.8
1.67
3.7
(5.5)
80
20.8
14.5
1.89
3.2
60
22.5
17.6
1.49
4.4
5.0
70
21.9
16.3
1.68
3.8
(11.5)
80
21.4
15.1
1.90
3.3
60
24.4
19.4
1.50
4.8
1.4
70
23.8
18.1
1.69
4.1
(3.2)
80
23.5
16.8
1.92
3.6
60
25.1
20.1
1.51
4.9
2.3
50
70
24.4
18.8
1.70
4.2
(5.4)
80
23.9
17.5
1.92
3.6
60
25.9
20.9
1.51
5.0
4.8
70
25.1
19.5
1.70
4.3
(11.1)
80
24.6
18.1
1.93
3.7
60
27.6
22.6
1.52
5.3
1.3
70
26.9
21.2
1.72
4.6
(3.1)
80
26.3
19.6
1.95
4.0
60
28.4
23.4
1.52
5.5
2.2
60
70
27.7
22.0
1.73
4.7
(5.2)
80
27.0
20.5
1.95
4.0
60
29.4
24.4
1.53
5.6
4.6
70
28.5
22.8
1.73
4.8
(10.7)
80
28.0
21.1
1.97
4.2
60
30.9
25.9
1.54
5.9
1.3
70
30.0
24.2
1.74
5.0
(3.0)
80
29.7
22.7
1.99
4.4
60
31.9
26.9
1.54
6.1
2.2
70
70
31.0
25.3
1.75
5.2
(5.0)
80
30.3
23.6
1.99
4.5
60
33.0
28.0
1.54
6.3
4.5
70
32.0
26.3
1.76
5.3
(10.4)
80
31.2
24.4
2.00
4.6
60
34.4
28.7
1.55
6.5
1.2
70
33.2
27.5
1.77
5.5
(2.9)
80
32.8
25.8
2.02
4.8
60
35.4
30.5
1.55
6.7
2.1
80
70
34.4
28.6
1.78
5.7
(4.8)
80
33.8
26.4
2.03
4.9
60
36.7
31.8
1.56
6.9
4.4
70
35.6
29.9
1.79
5.8
(10.1)
80
35.0
27.6
2.04
5.0
Operation Not Recommended
19
Performance data (cont)
50PTH,PTV036
1,100 CFM AT 0.25-in. ESP — FULL LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
1.4
4.5
80/67
(3.2)
85/71
75/63
2.3
50
6.0
80/67
(5.4)
85/71
75/63
4.8
9.0
80/67
(11.1)
85/71
75/63
1.3
4.5
80/67
(3.1)
85/71
75/63
2.3
60
6.0
80/67
(5.2)
85/71
75/63
4.6
9.0
80/67
(10.7)
85/71
75/63
1.3
4.5
80/67
(3.0)
85/71
75/63
2.2
70
6.0
80/67
(5.0)
85/71
75/63
4.5
9.0
80/67
(10.4)
85/71
75/63
1.3
4.5
80/67
(2.9)
85/71
75/63
2.1
80
6.0
80/67
(4.8)
85/71
75/63
4.4
9.0
80/67
(10.1)
85/71
75/63
1.2
4.5
80/67
(2.8)
85/71
75/63
2.1
85
6.0
80/67
(4.8)
85/71
75/63
4.3
9.0
80/67
(9.9)
85/71
75/63
1.2
4.5
80/67
(2.8)
85/71
75/63
2.0
90
6.0
80/67
(4.7)
85/71
75/63
4.2
9.0
80/67
(9.7)
85/71
75/63
1.2
4.5
80/67
(2.7)
85/71
75/63
2.0
100
6.0
80/67
(4.6)
85/71
75/63
4.1
9.0
80/67
(9.5)
85/71
75/63
1.1
4.5
80/67
(2.6)
85/71
75/63
1.9
6.0
110
80/67
(4.4)
85/71
75/63
4.0
9.0
80/67
(9.2)
85/71
See Legend and Notes on page 16.
20
Total
Capacity
(MBtuh)
40.9
43.6
46.4
41.6
44.4
47.4
42.4
45.3
48.3
39.2
41.8
44.6
40.0
42.6
45.5
40.7
43.5
46.4
37.5
40.0
42.6
38.2
40.8
43.5
38.9
41.6
44.5
35.7
38.1
40.7
36.5
38.9
41.6
37.1
39.6
42.5
34.8
37.2
39.8
35.5
38.0
40.5
36.1
38.6
41.4
34.0
36.3
38.8
34.6
37.0
39.5
35.2
37.7
40.4
32.1
34.4
36.7
32.7
35.0
37.4
33.3
35.7
38.1
30.3
32.4
34.7
30.8
33.1
35.4
31.5
33.7
36.1
Sensible
Capacity
(MBtuh)
29.9
30.6
31.4
30.2
31.0
31.7
30.6
31.4
32.1
29.1
30.0
30.7
29.4
30.3
31.1
29.8
30.5
31.4
28.4
29.1
30.0
28.7
29.5
30.4
29.0
29.8
30.6
27.7
28.5
29.3
27.9
28.8
29.6
28.2
29.1
29.8
27.3
28.1
28.8
27.6
28.4
29.2
27.7
28.7
29.5
26.8
27.7
28.5
27.2
28.1
28.9
27.4
28.2
29.1
26.1
26.9
27.9
26.3
27.3
28.1
26.6
27.5
28.4
25.3
26.3
27.1
25.5
26.5
27.3
25.8
26.7
27.6
Heat of
Power
Rejection Input
(MBtuh)
(kW)
46.4
1.69
49.3
1.74
52.3
1.78
47.0
1.64
50.0
1.69
53.1
1.73
47.7
1.60
50.7
1.64
54.0
1.69
45.2
1.82
47.9
1.86
50.8
1.89
45.7
1.76
48.5
1.79
51.5
1.83
46.3
1.71
49.3
1.74
52.3
1.78
43.9
1.97
46.6
2.01
49.3
2.04
44.4
1.91
47.2
1.94
50.0
1.96
44.9
1.85
47.8
1.87
50.8
1.90
42.7
2.16
45.2
2.19
47.9
2.22
43.2
2.09
45.7
2.11
48.5
2.13
43.6
2.02
46.3
2.04
49.2
2.06
42.1
2.27
44.6
2.29
47.3
2.32
42.5
2.19
45.2
2.21
47.8
2.23
43.0
2.12
45.6
2.14
48.4
2.15
41.6
2.38
44.1
2.41
46.6
2.43
42.0
2.30
44.5
2.32
47.1
2.34
42.3
2.23
45.0
2.25
47.7
2.26
40.5
2.63
43.0
2.66
45.3
2.68
40.9
2.55
43.3
2.57
45.8
2.58
41.2
2.47
43.7
2.48
46.2
2.49
39.7
2.92
41.9
2.94
44.3
2.96
39.9
2.84
42.2
2.85
44.6
2.86
40.2
2.74
42.6
2.75
45.0
2.77
EER
24.2
25.1
26.1
25.3
26.4
27.4
26.6
27.6
28.7
21.6
22.5
23.6
22.7
23.8
24.9
23.9
25.0
26.2
19.0
19.9
20.9
20.1
21.1
22.2
21.1
22.2
23.4
16.5
17.4
18.4
17.5
18.5
19.5
18.4
19.5
20.7
15.4
16.2
17.2
16.2
17.2
18.2
17.0
18.1
19.3
14.3
15.1
16.0
15.1
16.0
16.9
15.8
16.8
17.9
12.2
13.0
13.7
12.8
13.7
14.5
13.5
14.4
15.3
10.4
11.0
11.7
10.9
11.6
12.4
11.5
12.3
13.1
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
25.9
19.5
1.93
3.9
1.5
70
25.6
18.3
2.15
3.5
(3.4)
80
25.6
17.1
2.40
3.1
60
26.8
20.2
1.95
4.0
2.5
30
70
26.3
19.0
2.17
3.5
(5.7)
80
26.3
17.7
2.42
3.2
60
27.7
21.1
1.97
4.1
5.2
70
27.2
19.8
2.19
3.6
(11.9)
80
27.1
18.3
2.44
3.3
60
29.6
22.9
2.01
4.3
1.4
70
29.1
21.6
2.23
3.8
(3.3)
80
28.7
20.3
2.48
3.4
60
30.7
23.9
2.03
4.4
2.4
40
70
30.1
22.5
2.25
3.9
(5.5)
80
29.5
21.1
2.50
3.4
60
31.9
25.0
2.05
4.5
5.0
70
31.1
23.5
2.28
4.0
(11.5)
80
30.5
22.0
2.53
3.5
60
33.6
26.6
2.09
4.7
1.4
70
32.9
25.1
2.32
4.2
(3.2)
80
32.8
23.5
2.57
3.7
60
34.9
27.8
2.12
4.8
2.3
50
70
34.1
26.2
2.34
4.3
(5.4)
80
34.1
24.5
2.60
3.8
60
36.3
29.1
2.15
4.9
4.8
70
35.4
27.5
2.37
4.4
(11.1)
80
35.3
25.5
2.62
3.9
60
37.8
30.5
2.18
5.1
1.3
70
37.0
28.9
2.40
4.5
(3.1)
80
36.3
27.3
2.65
4.0
60
39.3
31.9
2.21
5.2
2.2
60
70
38.4
30.2
2.43
4.6
(5.2)
80
37.6
28.5
2.68
4.1
60
41.0
33.5
2.25
5.3
4.6
70
40.0
31.7
2.46
4.8
(10.7)
80
39.0
29.8
2.71
4.2
60
42.2
34.6
2.27
5.4
1.3
70
41.2
32.8
2.49
4.8
(3.0)
80
40.4
31.1
2.75
4.3
60
44.0
36.2
2.31
5.6
2.2
70
70
42.9
34.4
2.53
5.0
(5.0)
80
41.9
32.5
2.78
4.4
60
46.0
38.1
2.36
5.7
4.5
70
44.7
36.1
2.57
5.1
(10.4)
80
43.5
34.0
2.82
4.5
60
46.7
38.8
2.37
5.8
1.2
70
46.0
36.8
2.59
5.2
(2.9)
80
44.6
35.0
2.85
4.6
60
48.8
40.7
2.42
5.9
2.1
80
70
47.5
38.6
2.64
5.3
(4.8)
80
46.4
36.6
2.89
4.7
60
51.1
42.8
2.48
6.0
4.4
70
49.6
40.6
2.69
5.4
(10.1)
80
48.2
38.3
2.94
4.8
Operation Not Recommended
50PTH,PTV048
1,300 CFM AT 0.27-in. ESP — PART LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
1.1
6
80/67
(2.6)
85/71
75/63
1.9
50
8
80/67
(4.4)
85/71
75/63
3.9
12
80/67
(9.1)
85/71
75/63
1.1
6
80/67
(2.5)
85/71
75/63
1.9
60
8
80/67
(4.3)
85/71
75/63
3.8
12
80/67
(8.8)
85/71
75/63
1.1
6
80/67
(2.5)
85/71
75/63
1.8
70
8
80/67
(4.1)
85/71
75/63
3.7
12
80/67
(8.6)
85/71
75/63
1.0
6
80/67
(2.4)
85/71
75/63
1.7
80
8
80/67
(4.0)
85/71
75/63
3.6
12
80/67
(8.3)
85/71
75/63
1.0
6
80/67
(2.3)
85/71
75/63
1.7
8
85
80/67
(3.9)
85/71
75/63
3.5
12
80/67
(8.1)
85/71
75/63
1.0
6
80/67
(2.3)
85/71
75/63
1.7
8
90
80/67
(3.9)
85/71
75/63
3.5
12
80/67
(8.0)
85/71
75/63
1.0
6
80/67
(2.2)
85/71
75/63
1.6
8
100
80/67
(3.8)
85/71
75/63
3.4
12
80/67
(7.8)
85/71
75/63
1.0
6
80/67
(2.2)
85/71
75/63
1.6
8
110
80/67
(3.6)
85/71
75/63
3.3
12
80/67
(7.6)
85/71
Total
Capacity
(MBtuh)
39.8
42.6
45.3
40.7
43.6
46.4
41.7
44.6
47.6
37.7
40.3
43.0
38.5
41.2
44.0
39.4
42.2
45.2
35.5
38.0
40.6
36.3
38.9
41.5
37.1
39.7
42.6
33.2
35.6
38.2
33.9
36.4
39.0
34.7
37.3
40.0
32.1
34.5
37.0
32.8
35.3
37.8
33.5
36.0
38.7
31.0
33.3
35.7
31.7
34.0
36.6
32.3
34.9
37.5
28.8
31.0
33.3
29.4
31.6
34.0
30.0
32.4
34.8
26.6
28.7
30.5
27.1
29.3
31.5
27.7
29.9
32.2
Sensible
Capacity
(MBtuh)
31.6
32.6
33.5
32.0
33.0
34.0
32.4
33.4
34.3
30.6
31.7
32.6
31.1
32.1
33.1
31.4
32.5
33.4
29.7
30.9
31.8
30.0
31.2
32.2
30.4
31.6
32.5
28.9
30.0
31.0
29.2
30.3
31.4
29.5
30.6
31.7
28.4
29.5
30.6
28.7
29.8
30.8
29.0
30.2
31.3
28.0
29.1
30.2
28.2
29.4
30.4
28.5
29.6
30.7
27.0
28.3
29.4
27.3
28.5
29.7
27.6
28.7
29.9
26.2
27.4
28.5
26.4
27.7
28.8
26.6
27.9
29.1
Heat of
Power
Rejection Input
(MBtuh)
(kW)
44.5
1.43
47.2
1.41
49.9
1.39
45.2
1.36
47.9
1.33
50.7
1.30
45.9
1.28
48.7
1.24
51.7
1.21
43.0
1.63
45.5
1.61
48.2
1.58
43.5
1.55
46.2
1.52
48.9
1.49
44.2
1.47
46.9
1.44
49.8
1.40
41.4
1.85
43.8
1.82
46.5
1.80
41.9
1.77
44.5
1.74
47.1
1.71
42.5
1.69
45.1
1.65
47.9
1.62
39.8
2.09
42.2
2.07
44.8
2.05
40.3
2.01
42.8
1.98
45.3
1.95
40.8
1.92
43.4
1.89
46.0
1.86
39.2
2.22
41.5
2.20
44.0
2.18
39.6
2.13
42.0
2.11
44.5
2.08
40.0
2.05
42.5
2.02
45.1
1.99
38.4
2.35
40.7
2.34
43.1
2.32
38.9
2.27
41.2
2.25
43.7
2.22
39.3
2.19
41.7
2.16
44.3
2.12
37.1
2.64
39.3
2.63
41.6
2.61
37.4
2.56
39.7
2.54
42.0
2.52
37.8
2.48
40.2
2.45
42.5
2.42
35.9
2.96
38.0
2.95
39.9
2.94
36.1
2.88
38.3
2.86
40.5
2.84
36.5
2.80
38.7
2.77
41.0
2.74
EER
27.8
30.2
32.7
30.0
32.8
35.8
32.6
35.8
39.4
23.1
25.1
27.1
24.8
27.0
29.5
26.8
29.4
32.2
19.2
20.8
22.5
20.5
22.4
24.3
22.0
24.0
26.3
15.9
17.2
18.7
16.9
18.4
20.0
18.0
19.7
21.5
14.5
15.7
17.0
15.4
16.7
18.1
16.3
17.8
19.5
13.2
14.2
15.4
14.0
15.1
16.5
14.8
16.2
17.7
10.9
11.8
12.7
11.5
12.4
13.5
12.1
13.2
14.4
9.0
9.7
10.4
9.4
10.2
11.1
9.9
10.8
11.7
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
25.7
19.3
1.95
3.9
1.2
70
24.8
17.7
2.18
3.3
(2.8)
80
24.0
16.0
2.44
2.9
60
26.4
20.0
1.95
4.0
2.0
30
70
25.5
18.3
2.18
3.4
(4.7)
80
24.6
16.6
2.44
3.0
60
27.2
20.8
1.95
4.1
4.2
70
26.2
19.0
2.18
3.5
(9.8)
80
25.2
17.2
2.45
3.0
60
29.3
22.9
1.96
4.4
1.2
70
28.4
21.1
2.20
3.8
(2.7)
80
27.6
19.4
2.47
3.3
60
30.2
23.8
1.96
4.5
2.0
40
70
29.2
21.9
2.20
3.9
(4.6)
80
28.3
20.1
2.47
3.4
60
31.2
24.7
1.96
4.7
4.1
70
30.1
22.8
2.21
4.0
(9.5)
80
29.1
20.9
2.48
3.4
60
33.3
26.8
1.97
5.0
1.1
70
32.3
24.9
2.22
4.3
(2.6)
80
31.4
23.1
2.50
3.7
60
34.4
27.9
1.97
5.1
1.9
50
70
33.3
25.9
2.22
4.4
(4.4)
80
32.4
23.9
2.50
3.8
60
35.6
29.1
1.97
5.3
4.0
70
34.4
27.0
2.23
4.5
(9.1)
80
33.4
24.9
2.50
3.9
60
37.5
31.0
1.98
5.5
1.1
70
36.5
29.0
2.23
4.8
(2.5)
80
35.5
27.1
2.51
4.1
60
38.9
32.3
1.98
5.8
1.8
60
70
37.7
30.2
2.24
4.9
(4.3)
80
36.6
28.2
2.52
4.3
60
40.3
33.8
1.98
6.0
3.8
70
39.0
31.6
2.24
5.1
(8.8)
80
37.8
29.4
2.52
4.4
60
42.0
35.5
1.98
6.2
1.1
70
40.9
33.4
2.24
5.3
(2.5)
80
39.8
31.3
2.53
4.6
60
43.6
37.1
1.98
6.4
1.8
70
70
42.3
34.8
2.25
5.5
(4.1)
80
41.1
32.6
2.54
4.8
60
45.3
38.8
1.98
6.7
3.7
70
43.9
36.4
2.25
5.7
(8.6)
80
42.5
34.0
2.54
4.9
60
46.7
40.2
1.98
6.9
1.0
70
45.5
38.0
2.25
5.9
(2.4)
80
44.3
35.8
2.55
5.1
60
48.5
42.0
1.98
7.2
1.7
80
70
47.1
39.6
2.26
6.1
(4.0)
80
45.8
37.2
2.55
5.3
60
50.5
44.0
1.98
7.5
3.6
70
48.9
41.5
2.26
6.3
(8.3)
80
47.4
38.9
2.56
5.4
Operation Not Recommended
21
Performance data (cont)
50PTH,PTV048
1,600 CFM AT 0.60-in. ESP — FULL LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
1.1
6
80/67
(2.6)
85/71
75/63
1.9
50
8
80/67
(4.4)
85/71
75/63
3.9
12
80/67
(9.1)
85/71
75/63
1.1
6
80/67
(2.5)
85/71
75/63
1.9
60
8
80/67
(4.3)
85/71
75/63
3.8
12
80/67
(8.8)
85/71
75/63
1.1
6
80/67
(2.5)
85/71
75/63
1.8
70
8
80/67
(4.1)
85/71
75/63
3.7
12
80/67
(8.6)
85/71
75/63
1.0
6
80/67
(2.4)
85/71
75/63
1.7
80
8
80/67
(4.0)
85/71
75/63
3.6
12
80/67
(8.3)
85/71
75/63
1.0
6
80/67
(2.3)
85/71
75/63
1.7
8
85
80/67
(3.9)
85/71
75/63
3.5
12
80/67
(8.1)
85/71
75/63
1.0
6
80/67
(2.3)
85/71
75/63
1.7
90
8
80/67
(3.9)
85/71
75/63
3.5
12
80/67
(8.0)
85/71
75/63
1.0
6
80/67
(2.2)
85/71
75/63
1.6
8
100
80/67
(3.8)
85/71
75/63
3.4
12
80/67
(7.8)
85/71
75/63
1.0
6
80/67
(2.2)
85/71
75/63
1.6
8
110
80/67
(3.6)
85/71
75/63
3.3
12
80/67
(7.6)
85/71
See Legend and Notes on page 16.
22
Total
Capacity
(MBtuh)
52.4
55.8
59.4
53.7
57.2
61.0
55.0
58.8
62.7
50.0
53.4
56.9
51.3
54.8
58.4
52.6
56.3
59.9
47.7
50.9
54.3
48.9
52.2
55.6
50.1
53.6
57.2
45.2
48.3
51.6
46.4
49.6
53.0
47.5
50.9
54.4
44.0
47.0
50.2
45.1
48.2
51.6
46.3
49.6
53.0
42.7
45.7
48.8
43.8
46.8
50.1
44.9
48.2
51.6
40.2
43.1
45.9
41.2
44.2
47.2
42.2
45.3
48.6
37.6
40.3
42.9
38.5
41.3
44.1
39.5
42.5
45.4
Sensible
Capacity
(MBtuh)
40.1
41.4
42.3
40.7
41.9
42.9
41.3
42.4
43.6
39.2
40.4
41.4
39.7
40.8
42.0
40.3
41.4
42.7
38.2
39.4
40.4
38.6
39.9
41.1
39.1
40.5
41.7
37.1
38.4
39.5
37.5
38.8
40.0
38.1
39.4
40.6
36.5
37.9
39.0
37.1
38.4
39.5
37.5
38.8
40.0
36.1
37.4
38.5
36.4
37.9
39.0
37.0
38.3
39.5
35.1
36.3
37.7
35.5
36.7
38.0
35.9
37.3
38.4
34.0
35.3
36.7
34.4
35.8
37.1
34.8
36.1
37.5
Heat of
Power
Rejection Input
(MBtuh)
(kW)
60.5
2.47
64.0
2.50
67.7
2.53
61.4
2.36
65.0
2.38
68.9
2.40
62.4
2.24
66.3
2.25
70.2
2.26
58.8
2.69
62.2
2.71
65.9
2.74
59.6
2.57
63.3
2.59
67.0
2.61
60.6
2.45
64.4
2.46
68.1
2.47
57.1
2.93
60.5
2.95
64.0
2.98
58.0
2.81
61.5
2.83
64.9
2.84
58.9
2.68
62.4
2.69
66.1
2.70
55.5
3.20
58.8
3.23
62.2
3.26
56.3
3.07
59.7
3.09
63.1
3.11
57.0
2.94
60.5
2.95
64.1
2.96
54.8
3.35
57.9
3.38
61.3
3.42
55.4
3.22
58.7
3.24
62.2
3.26
56.3
3.09
59.6
3.10
63.2
3.11
54.0
3.52
57.1
3.55
60.4
3.59
54.7
3.38
57.8
3.40
61.3
3.43
55.3
3.24
58.7
3.25
62.2
3.27
52.7
3.88
55.7
3.92
58.7
3.96
53.2
3.73
56.3
3.76
59.5
3.79
53.7
3.59
56.9
3.60
60.3
3.62
51.4
4.31
54.3
4.35
57.1
4.40
51.8
4.15
54.7
4.17
57.7
4.21
52.3
3.99
55.4
4.01
58.4
4.02
EER
21.2
22.3
23.5
22.8
24.1
25.5
24.6
26.1
27.7
18.6
19.7
20.8
20.0
21.2
22.4
21.5
22.9
24.2
16.3
17.2
18.2
17.4
18.5
19.6
18.7
19.9
21.2
14.1
14.9
15.8
15.1
16.0
17.0
16.1
17.2
18.4
13.1
13.9
14.7
14.0
14.9
15.8
15.0
16.0
17.0
12.1
12.9
13.6
13.0
13.8
14.6
13.9
14.8
15.8
10.4
11.0
11.6
11.0
11.8
12.5
11.8
12.6
13.4
8.7
9.3
9.8
9.3
9.9
10.5
9.9
10.6
11.3
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
34.5
25.7
2.67
3.8
1.2
70
34.0
24.2
2.98
3.3
(2.8)
80
34.2
22.4
3.32
3.0
60
35.8
26.9
2.70
3.9
2.0
30
70
35.4
25.1
3.01
3.4
(4.7)
80
34.9
23.4
3.34
3.1
60
37.3
28.2
2.73
4.0
4.2
70
36.7
26.3
3.04
3.5
(9.8)
80
36.6
24.3
3.37
3.2
60
39.5
30.3
2.79
4.2
1.2
70
38.8
28.6
3.09
3.7
(2.7)
80
39.0
26.6
3.42
3.3
60
41.5
31.4
2.82
4.3
2.0
40
70
40.3
30.0
3.12
3.8
(4.6)
80
40.3
27.8
3.45
3.4
60
42.9
33.3
2.86
4.4
4.1
70
42.0
31.4
3.15
3.9
(9.5)
80
41.1
29.4
3.48
3.5
60
44.9
35.0
2.90
4.5
1.1
70
44.7
33.1
3.20
4.1
(2.6)
80
44.0
31.3
3.52
3.7
60
47.3
36.7
2.94
4.7
1.9
50
70
46.4
34.7
3.23
4.2
(4.4)
80
45.7
32.7
3.56
3.8
60
49.0
39.0
2.98
4.8
4.0
70
47.9
36.7
3.27
4.3
(9.1)
80
47.5
34.3
3.60
3.9
60
50.6
40.4
3.01
4.9
1.1
70
49.6
38.4
3.31
4.4
(2.5)
80
48.8
36.4
3.64
3.9
60
53.4
42.4
3.05
5.1
1.8
60
70
52.3
40.2
3.35
4.6
(4.3)
80
51.3
37.9
3.68
4.1
60
55.4
45.0
3.09
5.2
3.8
70
54.0
42.6
3.39
4.7
(8.8)
80
52.8
40.1
3.73
4.1
60
56.5
46.0
3.11
5.3
1.1
70
55.4
43.8
3.42
4.7
(2.5)
80
54.5
41.6
3.77
4.2
60
59.1
48.4
3.16
5.5
1.8
70
70
57.8
46.0
3.47
4.9
(4.1)
80
58.4
42.8
3.82
4.5
60
62.1
51.4
3.21
5.7
3.7
70
60.5
48.7
3.52
5.0
(8.6)
80
59.1
46.0
3.88
4.5
60
62.6
52.1
3.22
5.7
1.0
70
61.4
49.5
3.54
5.1
(2.4)
80
60.2
47.0
3.90
4.5
60
65.6
55.0
3.27
5.9
1.7
80
70
64.1
52.0
3.59
5.2
(4.0)
80
62.8
49.3
3.96
4.6
60
69.0
58.0
3.33
6.1
3.6
70
67.2
54.9
3.66
5.4
(8.3)
80
65.8
51.4
4.03
4.8
Operation Not Recommended
50PTH,PTV060
1,600 CFM AT 0.60-in. ESP — PART LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
1.2
7.5
80/67
(2.8)
85/71
75/63
2.0
50
10.0
80/67
(4.7)
85/71
75/63
4.2
15.0
80/67
(9.7)
85/71
75/63
1.1
7.5
80/67
(2.6)
85/71
75/63
1.9
60
10.0
80/67
(4.4)
85/71
75/63
3.9
15.0
80/67
(9.1)
85/71
75/63
1.1
7.5
80/67
(2.6)
85/71
75/63
1.9
70
10.0
80/67
(4.4)
85/71
75/63
3.9
15.0
80/67
(9.1)
85/71
75/63
1.1
7.5
80/67
(2.5)
85/71
75/63
1.8
80
10.0
80/67
(4.2)
85/71
75/63
3.8
15.0
80/67
(8.8)
85/71
75/63
1.1
7.5
80/67
(2.5)
85/71
75/63
1.8
10.0
85
80/67
(4.2)
85/71
75/63
3.7
15.0
80/67
(8.5)
85/71
75/63
1.0
7.5
80/67
(2.4)
85/71
75/63
1.8
10.0
90
80/67
(4.1)
85/71
75/63
3.7
15.0
80/67
(8.5)
85/71
75/63
1.0
7.5
80/67
(2.4)
85/71
75/63
1.7
10.0
100
80/67
(4.0)
85/71
75/63
3.6
15.0
80/67
(8.3)
85/71
75/63
1.0
7.5
80/67
(2.3)
85/71
75/63
1.7
10.0
110
80/67
(3.9)
85/71
75/63
3.5
15.0
80/67
(8.0)
85/71
Total
Capacity
(MBtuh)
51.0
54.5
58.0
52.1
55.7
59.3
53.2
56.8
60.7
48.3
51.7
55.1
49.3
52.8
56.2
50.4
53.8
57.6
45.5
48.6
52.1
46.4
49.8
53.2
47.4
50.8
54.3
42.6
45.7
48.9
43.5
46.7
49.9
44.3
47.7
51.2
41.1
44.2
47.4
42.0
45.2
48.4
42.9
46.1
49.5
39.7
42.7
45.8
40.5
43.6
46.8
41.4
44.5
47.8
36.9
39.7
42.6
37.6
40.5
43.4
38.4
41.3
44.5
34.0
36.6
39.4
34.6
37.4
40.3
35.3
38.2
41.1
Sensible
Capacity
(MBtuh)
39.7
40.9
42.1
40.2
41.4
42.5
40.6
41.9
42.9
38.5
39.7
40.9
38.9
40.2
41.4
39.3
40.7
41.8
37.3
38.7
39.8
37.8
39.0
40.2
38.2
39.5
40.8
36.1
37.5
38.8
36.4
37.8
39.2
36.9
38.3
39.5
35.6
36.9
38.2
35.9
37.2
38.5
36.2
37.6
38.9
35.0
36.3
37.6
35.2
36.7
38.1
35.5
37.0
38.5
33.8
35.3
36.6
34.1
35.6
37.0
34.3
35.9
37.2
32.7
34.2
35.7
33.0
34.5
35.9
33.2
34.6
36.2
Heat of
Power
Rejection Input
(MBtuh)
(kW)
57.1
1.85
60.5
1.83
63.9
1.79
57.9
1.77
61.4
1.74
64.9
1.70
58.8
1.69
62.3
1.65
66.1
1.61
55.0
2.08
58.4
2.05
61.8
2.02
55.8
2.00
59.2
1.96
62.6
1.93
56.6
1.91
60.0
1.87
63.7
1.83
53.1
2.34
56.2
2.31
59.5
2.29
53.7
2.25
57.0
2.22
60.4
2.18
54.4
2.16
57.7
2.12
61.2
2.08
51.1
2.64
54.2
2.61
57.2
2.58
51.7
2.55
54.8
2.51
58.0
2.47
52.2
2.45
55.5
2.41
58.9
2.37
50.1
2.80
53.2
2.77
56.3
2.75
50.6
2.71
53.8
2.67
57.0
2.64
51.3
2.61
54.4
2.57
57.7
2.53
49.2
2.97
52.2
2.94
55.2
2.92
49.7
2.88
52.7
2.84
55.8
2.81
50.3
2.78
53.4
2.74
56.5
2.70
47.5
3.32
50.3
3.30
53.2
3.29
47.9
3.23
50.7
3.21
53.7
3.18
48.4
3.14
51.2
3.11
54.4
3.07
45.8
3.72
48.5
3.71
51.3
3.68
46.1
3.63
48.9
3.60
51.8
3.58
46.5
3.54
49.4
3.50
52.2
3.47
EER
27.5
29.8
32.3
29.4
32.0
34.8
31.4
34.3
37.7
23.2
25.2
27.2
24.7
26.9
29.2
26.4
28.8
31.5
19.4
21.0
22.8
20.6
22.4
24.4
21.9
23.9
26.1
16.1
17.5
18.9
17.1
18.6
20.2
18.1
19.8
21.6
14.7
15.9
17.3
15.5
16.9
18.3
16.4
17.9
19.6
13.4
14.5
15.7
14.1
15.3
16.7
14.9
16.2
17.7
11.1
12.0
13.0
11.6
12.6
13.6
12.2
13.3
14.5
9.1
9.9
10.7
9.5
10.4
11.3
10.0
10.9
11.8
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
33.6
25.2
2.56
3.8
1.3
70
32.4
22.8
2.85
3.3
(3.0)
80
31.2
20.6
3.17
2.9
60
34.5
26.0
2.57
3.9
2.2
30
70
33.1
23.8
2.86
3.4
(5.0)
80
31.9
21.4
3.18
2.9
60
35.5
27.0
2.57
4.0
4.5
70
34.4
24.3
2.87
3.5
(10.4)
80
32.7
22.2
3.19
3.0
60
38.4
29.8
2.59
4.3
1.3
70
37.1
27.5
2.89
3.8
(2.9)
80
35.8
25.2
3.22
3.3
60
39.5
31.0
2.60
4.5
2.1
40
70
38.1
28.6
2.90
3.9
(4.9)
80
36.7
26.2
3.23
3.3
60
40.8
32.2
2.61
4.6
4.4
70
39.2
29.6
2.91
4.0
(10.9)
80
38.0
27.0
3.24
3.4
60
43.6
34.9
2.62
4.9
1.2
70
42.2
32.4
2.93
4.2
(2.8)
80
41.0
29.9
3.26
3.7
60
45.0
36.3
2.63
5.0
2.0
50
70
43.5
33.6
2.93
4.3
(4.7)
80
42.0
31.3
3.27
3.8
60
46.5
38.0
2.63
5.2
4.2
70
45.4
34.8
2.94
4.5
(9.7)
80
43.4
32.1
3.28
3.9
60
49.1
40.4
2.64
5.5
1.2
70
47.6
37.8
2.96
4.7
(2.7)
80
46.3
35.0
3.30
4.1
60
51.2
41.8
2.64
5.7
2.0
60
70
49.6
39.0
2.96
4.9
(4.5)
80
47.7
36.3
3.31
4.2
60
52.6
44.1
2.65
5.8
4.1
70
51.3
40.6
2.97
5.1
(9.4)
80
49.1
38.4
3.32
4.3
60
55.4
45.9
2.65
6.1
1.1
70
53.8
43.1
2.98
5.3
(2.6)
80
51.7
40.7
3.34
4.5
60
57.3
47.8
2.66
6.3
1.9
70
70
55.5
44.9
2.99
5.5
(4.4)
80
53.5
41.8
3.35
4.7
60
59.5
49.9
2.66
6.6
3.9
70
57.5
46.7
2.99
5.6
(9.1)
80
55.7
43.5
3.36
4.9
60
61.3
51.9
2.66
6.8
1.1
70
59.6
48.9
3.00
5.8
(2.5)
80
57.4
46.2
3.37
5.0
60
63.6
54.1
2.66
7.0
1.8
80
70
61.1
51.3
3.00
6.0
(4.2)
80
59.4
47.6
3.38
5.2
60
66.0
56.5
2.66
7.3
3.8
70
63.8
53.0
3.01
6.2
(8.8)
80
61.8
49.6
3.38
5.4
Operation Not Recommended
23
Performance data (cont)
50PTH,PTV060
2,000 CFM AT 0.60-in. ESP — FULL LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
1.2
7.5
80/67
(2.8)
85/71
75/63
2.0
50
10.0
80/67
(4.7)
85/71
75/63
4.2
15.0
80/67
(9.7)
85/71
75/63
1.1
7.5
80/67
(2.6)
85/71
75/63
1.9
60
10.0
80/67
(4.4)
85/71
75/63
3.9
15.0
80/67
(9.1)
85/71
75/63
1.1
7.5
80/67
(2.6)
85/71
75/63
1.9
70
10.0
80/67
(4.4)
85/71
75/63
3.9
15.0
80/67
(9.1)
85/71
75/63
1.1
7.5
80/67
(2.5)
85/71
75/63
1.8
80
10.0
80/67
(4.2)
85/71
75/63
3.8
15.0
80/67
(8.8)
85/71
75/63
1.1
7.5
80/67
(2.5)
85/71
75/63
1.8
10.0
85
80/67
(4.2)
85/71
75/63
3.7
15.0
80/67
(8.5)
85/71
75/63
1.0
7.5
80/67
(2.4)
85/71
75/63
1.8
90
10.0
80/67
(4.1)
85/71
75/63
3.7
15.0
80/67
(8.5)
85/71
75/63
1.0
7.5
80/67
(2.4)
85/71
75/63
1.7
10.0
100
80/67
(4.0)
85/71
75/63
3.6
15.0
80/67
(8.3)
85/71
75/63
1.0
7.5
80/67
(2.3)
85/71
75/63
1.7
10.0
110
80/67
(3.9)
85/71
75/63
3.5
15.0
80/67
(8.0)
85/71
See Legend and Notes on page 16.
24
Total
Capacity
(MBtuh)
66.6
71.0
75.5
68.0
72.5
77.3
69.5
74.1
79.2
63.9
68.1
72.4
65.3
69.6
74.3
66.6
71.3
76.0
61.0
65.1
69.3
62.3
66.6
71.1
63.7
68.1
72.6
58.1
62.1
66.0
59.3
63.4
67.6
60.7
64.9
69.3
56.6
60.5
64.4
57.9
61.8
66.0
59.0
63.1
67.6
55.1
58.9
62.7
56.3
60.1
64.3
57.4
61.5
65.7
52.0
55.6
59.2
53.1
56.8
60.7
54.2
58.0
62.2
48.9
52.2
55.6
49.9
53.4
57.0
50.9
54.5
58.3
Sensible
Capacity
(MBtuh)
50.5
52.0
53.4
51.1
52.7
54.1
51.8
53.3
54.6
49.4
51.0
52.3
50.0
51.6
52.8
50.6
52.0
53.5
48.2
49.8
51.2
48.8
50.4
51.6
49.2
50.8
52.4
47.0
48.4
50.0
47.5
49.1
50.6
47.9
49.5
51.0
46.4
47.8
49.4
46.8
48.5
49.8
47.4
49.0
50.4
45.7
47.4
48.8
46.1
47.9
49.2
46.7
48.4
49.9
44.5
46.1
47.6
44.9
46.6
48.0
45.4
47.1
48.4
43.2
44.9
46.4
43.6
45.3
46.9
43.8
45.7
47.3
Heat of
Power
Rejection Input
(MBtuh)
(kW)
77.1
3.15
81.7
3.21
86.4
3.27
78.1
3.04
82.8
3.09
87.8
3.15
79.2
2.93
84.1
2.98
89.4
3.04
75.1
3.40
79.4
3.45
84.0
3.50
76.1
3.27
80.6
3.32
85.5
3.37
77.0
3.15
81.9
3.20
86.8
3.24
73.0
3.67
77.3
3.72
81.7
3.78
73.9
3.54
78.4
3.58
83.1
3.63
75.0
3.42
79.5
3.45
84.2
3.49
71.1
4.00
75.4
4.05
79.5
4.10
71.9
3.86
76.2
3.89
80.6
3.93
72.9
3.72
77.3
3.75
81.8
3.78
70.2
4.18
74.4
4.23
78.4
4.27
71.1
4.04
75.1
4.07
79.6
4.11
71.7
3.89
76.0
3.92
80.6
3.95
69.3
4.37
73.3
4.42
77.3
4.47
70.1
4.23
74.1
4.26
78.4
4.30
70.7
4.08
74.9
4.10
79.3
4.13
67.6
4.80
71.4
4.85
75.2
4.89
68.2
4.65
72.1
4.68
76.2
4.72
68.8
4.50
72.8
4.52
77.1
4.55
66.1
5.30
69.6
5.34
73.2
5.39
66.5
5.13
70.2
5.17
74.0
5.20
67.2
4.99
70.8
5.00
74.7
5.02
EER
21.1
22.1
23.1
22.4
23.4
24.5
23.7
24.9
26.1
18.8
19.8
20.7
19.9
21.0
22.0
21.1
22.3
23.4
16.6
17.5
18.4
17.6
18.6
19.6
18.6
19.7
20.8
14.5
15.3
16.1
15.4
16.3
17.2
16.3
17.3
18.3
13.5
14.3
15.1
14.3
15.2
16.1
15.1
16.1
17.1
12.6
13.3
14.0
13.3
14.1
15.0
14.1
15.0
15.9
10.8
11.5
12.1
11.4
12.1
12.9
12.0
12.8
13.7
9.2
9.8
10.3
9.7
10.3
11.0
10.2
10.9
11.6
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
46.3
33.6
3.51
3.9
1.3
70
45.8
31.6
3.87
3.5
(3.0)
80
45.2
29.7
4.25
3.1
60
47.3
35.4
3.54
3.9
2.2
30
70
47.2
32.8
3.90
3.6
(5.0)
80
45.8
31.2
4.28
3.1
60
49.1
36.7
3.57
4.0
4.5
70
48.0
34.8
3.93
3.6
(10.4)
80
48.0
31.9
4.31
3.3
60
52.6
39.2
3.63
4.2
1.3
70
52.9
36.5
3.99
3.9
(2.9)
80
52.2
34.5
4.38
3.5
60
54.5
40.9
3.67
4.4
2.1
40
70
53.6
38.7
4.02
3.9
(4.9)
80
52.8
36.5
4.42
3.5
60
56.0
43.2
3.71
4.4
4.4
70
54.8
40.8
4.06
4.0
(10.9)
80
54.6
38.0
4.46
3.6
60
58.8
45.8
3.76
4.6
1.2
70
57.8
43.5
4.12
4.1
(2.8)
80
56.9
41.2
4.52
3.7
60
61.0
48.5
3.81
4.7
2.0
50
70
60.6
45.2
4.17
4.3
(4.7)
80
59.6
42.7
4.57
3.8
60
63.6
50.5
3.86
4.8
4.2
70
63.1
47.2
4.22
4.4
(9.7)
80
61.8
44.5
4.62
3.9
60
67.6
51.7
3.90
5.1
1.2
70
66.5
49.2
4.27
4.6
(2.7)
80
63.7
48.1
4.69
4.0
60
69.4
54.8
3.96
5.1
2.0
60
70
68.0
52.1
4.33
4.6
(4.5)
80
68.0
48.2
4.74
4.2
60
71.8
58.1
4.02
5.2
4.1
70
70.1
55.1
4.39
4.7
(9.4)
80
69.5
51.5
4.80
4.2
60
74.2
59.4
4.06
5.4
1.1
70
72.8
56.6
4.43
4.8
(2.6)
80
71.6
53.8
4.85
4.3
60
77.5
62.3
4.12
5.5
1.9
70
70
77.0
58.1
4.50
5.0
(4.4)
80
75.6
55.0
4.92
4.5
60
80.4
66.2
4.20
5.6
3.9
70
78.4
62.7
4.58
5.0
(9.1)
80
76.8
59.4
5.00
4.5
60
82.1
66.8
4.22
5.7
1.1
70
80.5
63.7
4.61
5.1
(2.5)
80
79.0
60.5
5.04
4.6
60
85.9
70.1
4.31
5.8
1.8
80
70
84.0
66.7
4.69
5.3
(4.2)
80
82.2
63.3
5.12
4.7
60
89.3
74.5
4.40
5.9
3.8
70
87.1
71.6
4.79
5.3
(8.8)
80
85.7
66.2
5.22
4.8
Operation Not Recommended
50PTH,PTV070
1,850 CFM AT 0.60-in. ESP — PART LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
0.9
9
80/67
(2.1)
85/71
75/63
1.5
50
12
80/67
(3.5)
85/71
75/63
3.2
18
80/67
(7.3)
85/71
75/63
0.9
9
80/67
(2.0)
85/71
75/63
1.5
60
12
80/67
(3.4)
85/71
75/63
3.1
18
80/67
(7.1)
85/71
75/63
0.9
9
80/67
(2.0)
85/71
75/63
1.4
70
12
80/67
(3.3)
85/71
75/63
3.0
18
80/67
(6.9)
85/71
75/63
0.8
9
80/67
(1.9)
85/71
75/63
1.4
80
12
80/67
(3.2)
85/71
75/63
2.9
18
80/67
(6.6)
85/71
75/63
0.8
9
80/67
(1.9)
85/71
75/63
1.3
12
85
80/67
(3.1)
85/71
75/63
2.8
18
80/67
(6.5)
85/71
75/63
0.8
9
80/67
(1.8)
85/71
75/63
1.3
12
90
80/67
(3.1)
85/71
75/63
2.8
18
80/67
(6.4)
85/71
75/63
0.8
9
80/67
(1.8)
85/71
75/63
1.3
12
100
80/67
(3.0)
85/71
75/63
2.7
18
80/67
(6.2)
85/71
75/63
0.7
9
80/67
(1.7)
85/71
75/63
1.3
12
110
80/67
(2.9)
85/71
75/63
2.6
18
80/67
(6.1)
85/71
Total
Capacity
(MBtuh)
58.8
62.6
66.6
59.9
63.9
68.2
61.1
65.3
69.6
56.0
59.7
63.6
57.1
61.1
65.1
58.3
62.3
66.4
53.2
56.8
60.7
54.3
58.1
62.0
55.4
59.2
63.2
50.4
53.8
57.4
51.3
54.9
58.6
52.4
56.1
59.9
48.9
52.2
55.9
49.9
53.3
57.1
50.8
54.5
58.2
47.5
50.7
54.2
48.3
51.8
55.4
49.3
52.9
56.5
44.4
47.6
51.0
45.3
48.6
52.0
46.1
49.5
53.1
41.2
44.5
47.7
42.2
45.4
48.8
42.9
46.2
49.8
Sensible
Capacity
(MBtuh)
45.7
47.1
48.4
46.2
47.7
48.8
46.7
48.1
49.4
44.6
46.0
47.4
45.0
46.4
47.7
45.5
47.0
48.4
43.4
44.9
46.1
43.7
45.2
46.6
44.2
45.8
47.2
42.1
43.7
45.1
42.6
44.2
45.6
43.0
44.5
46.0
41.5
43.1
44.4
41.9
43.6
44.9
42.4
43.9
45.4
40.9
42.6
44.0
41.4
42.8
44.3
41.7
43.3
44.8
39.7
41.4
43.0
40.1
41.6
43.3
40.5
42.1
43.7
38.6
40.3
41.9
38.8
40.6
42.2
39.2
40.9
42.5
Heat of
Power
Rejection Input
(MBtuh)
(kW)
66.3
2.28
70.1
2.27
74.1
2.27
67.1
2.18
71.0
2.16
75.3
2.15
68.0
2.07
72.1
2.05
76.4
2.02
64.3
2.54
68.1
2.54
72.0
2.54
65.1
2.43
69.0
2.42
73.1
2.41
65.9
2.33
69.9
2.30
74.0
2.28
62.4
2.84
66.1
2.84
70.0
2.85
63.2
2.73
67.0
2.72
70.9
2.71
63.9
2.61
67.7
2.60
71.7
2.58
60.7
3.18
64.1
3.18
67.8
3.19
61.2
3.06
64.8
3.06
68.6
3.05
61.9
2.94
65.7
2.93
69.4
2.91
59.8
3.37
63.2
3.37
66.9
3.38
60.3
3.24
63.8
3.24
67.6
3.24
60.9
3.12
64.6
3.11
68.3
3.10
58.9
3.56
62.2
3.57
65.8
3.58
59.4
3.44
62.9
3.44
66.6
3.44
60.0
3.31
63.6
3.30
67.2
3.29
57.3
3.99
60.5
4.00
63.9
3.99
57.7
3.87
61.1
3.87
64.5
3.85
58.1
3.74
61.5
3.73
65.1
3.71
55.6
4.47
58.9
4.46
62.1
4.45
56.2
4.35
59.4
4.33
62.7
4.31
56.5
4.22
59.8
4.19
63.3
4.17
EER
25.7
27.5
29.4
27.5
29.5
31.8
29.4
31.9
34.4
22.0
23.5
25.0
23.4
25.2
27.0
25.1
27.0
29.1
18.7
20.0
21.3
19.9
21.3
22.8
21.2
22.8
24.5
15.8
16.9
18.0
16.8
18.0
19.2
17.8
19.2
20.6
14.5
15.5
16.5
15.4
16.4
17.6
16.3
17.5
18.8
13.3
14.2
15.1
14.0
15.1
16.1
14.9
16.0
17.2
11.1
11.9
12.8
11.7
12.6
13.5
12.3
13.3
14.3
9.2
10.0
10.7
9.7
10.5
11.3
10.2
11.0
11.9
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
60
39.9
29.3
3.05
3.8
1.0
70
39.5
26.9
3.39
3.4
(2.3)
80
38.8
25.8
3.78
3.0
60
41.5
25.9
3.05
4.0
1.6
30
70
40.3
29.6
3.40
3.5
(3.8)
80
39.3
23.9
3.78
3.0
60
41.7
33.0
3.07
4.0
3.4
70
41.1
29.1
3.41
3.5
(7.9)
80
40.0
27.3
3.80
3.1
60
45.1
35.0
3.09
4.3
0.9
70
45.4
23.5
3.41
3.9
(2.2)
80
41.0
36.0
3.82
3.1
60
46.8
36.0
3.10
4.4
1.6
40
70
46.3
27.9
3.44
4.0
(3.7)
80
45.2
29.5
3.84
3.5
60
49.2
32.8
3.11
4.6
3.3
70
46.4
35.5
3.46
3.9
(7.6)
80
46.3
32.4
3.85
3.5
60
51.3
41.1
3.13
4.8
0.9
70
50.1
38.8
3.49
4.2
(2.1)
80
50.1
36.3
3.89
3.8
60
53.3
42.5
3.14
5.0
1.5
50
70
53.6
29.9
3.48
4.5
(3.5)
80
52.0
29.2
3.88
3.9
60
56.6
36.6
3.14
5.3
3.2
70
54.9
35.8
3.51
4.6
(7.3)
80
51.4
40.1
3.92
3.8
60
58.2
47.3
3.17
5.4
0.9
70
56.8
44.6
3.54
4.7
(2.0)
80
55.8
41.9
3.95
4.1
60
60.4
49.3
3.19
5.6
1.5
60
70
59.1
46.8
3.56
4.9
(3.4)
80
53.4
55.4
3.97
3.9
60
64.5
36.4
3.17
6.0
3.1
70
62.5
39.4
3.56
5.1
(7.1)
80
59.8
40.5
3.98
4.4
60
65.2
54.3
3.22
5.9
0.9
70
63.7
51.4
3.61
5.2
(2.0)
80
63.7
49.9
4.05
4.6
60
67.6
57.3
3.24
6.1
1.4
70
70
66.5
53.6
3.63
5.4
(3.3)
80
65.9
51.7
4.07
4.7
60
73.6
39.7
3.21
6.7
3.0
70
70.6
41.8
3.62
5.7
(6.9)
80
64.7
64.5
4.09
4.6
60
72.6
61.5
3.27
6.5
0.8
70
70.9
58.1
3.67
5.7
(1.9)
80
69.3
55.1
4.11
4.9
60
75.6
64.2
3.29
6.7
1.4
80
70
73.7
60.7
3.70
5.8
(3.2)
80
60.8
93.6
4.14
4.3
60
79.3
67.6
3.32
7.0
2.9
70
77.5
63.6
3.73
6.1
(6.6)
80
77.0
40.6
4.11
5.5
Operation Not Recommended
25
Performance data (cont)
50PTH,PTV070
2,350 CFM AT 0.60-in. ESP — FULL LOAD
HEATING
COOLING
Entering Water Pressure Entering
Fluid
Flow Drop PSI Air Temp
Temp (F) (GPM) (FOH) (db/wb) F
75/63
0.9
9
80/67
(2.1)
85/71
75/63
1.5
50
12
80/67
(3.5)
85/71
75/63
3.2
18
80/67
(7.3)
85/71
75/63
0.9
9
80/67
(2.0)
85/71
75/63
1.5
60
12
80/67
(3.4)
85/71
75/63
3.1
18
80/67
(7.1)
85/71
75/63
0.9
9
80/67
(2.0)
85/71
75/63
1.4
70
12
80/67
(3.3)
85/71
75/63
3.0
18
80/67
(6.9)
85/71
75/63
0.8
9
80/67
(1.9)
85/71
75/63
1.4
80
12
80/67
(3.2)
85/71
75/63
2.9
18
80/67
(6.6)
85/71
75/63
0.8
9
80/67
(1.9)
85/71
75/63
1.3
85
12
80/67
(3.1)
85/71
75/63
2.8
18
80/67
(6.5)
85/71
75/63
0.8
9
80/67
(1.8)
85/71
75/63
1.3
12
90
80/67
(3.1)
85/71
75/63
2.8
18
80/67
(6.4)
85/71
75/63
0.8
9
80/67
(1.8)
85/71
75/63
1.3
12
100
80/67
(3.0)
85/71
75/63
2.7
18
80/67
(6.2)
85/71
75/63
0.7
9
80/67
(1.7)
85/71
75/63
1.3
12
110
80/67
(2.9)
85/71
75/63
2.6
18
80/67
(6.1)
85/71
See Legend and Notes on page 16.
26
Total
Capacity
(MBtuh)
74.5
79.5
84.7
76.2
81.5
86.8
78.0
83.5
89.2
71.4
76.4
81.5
73.0
78.1
83.3
74.8
80.1
85.6
68.3
72.9
77.8
69.7
74.8
79.9
71.4
76.4
81.9
65.0
69.6
73.9
66.5
71.2
76.1
67.9
72.9
77.9
63.5
67.7
72.2
64.9
69.4
74.2
66.2
71.1
75.9
61.8
65.9
70.4
63.3
67.3
72.1
64.5
69.0
74.1
58.2
62.6
66.6
59.5
63.9
68.2
61.0
65.3
69.9
54.9
58.7
62.6
56.0
60.1
64.3
57.4
61.5
65.9
Sensible
Capacity
(MBtuh)
56.1
58.0
59.6
56.8
58.4
60.4
57.6
59.2
60.9
54.9
56.4
58.0
55.6
57.4
59.1
56.0
57.8
59.5
53.3
55.4
57.1
54.2
55.7
57.4
54.9
56.8
58.1
52.3
53.7
56.4
52.5
54.4
56.0
53.4
55.0
57.2
51.3
53.4
55.2
51.9
53.6
55.4
52.7
54.3
56.4
50.9
53.1
54.4
51.1
53.9
55.1
52.0
53.9
55.3
50.1
51.3
53.3
50.5
52.0
54.0
50.6
52.5
54.3
48.3
50.1
52.1
49.0
50.6
52.3
49.0
51.1
52.7
Heat of
Power
Rejection Input
(MBtuh)
(kW)
86.7
3.68
91.9
3.73
97.3
3.79
87.9
3.53
93.4
3.57
98.9
3.62
89.2
3.37
94.9
3.41
100.8
3.45
84.5
3.98
89.7
4.03
95.0
4.07
85.6
3.82
90.8
3.86
96.3
3.90
86.9
3.67
92.4
3.69
98.1
3.73
82.5
4.31
87.2
4.34
92.3
4.39
83.4
4.14
88.6
4.18
93.8
4.21
84.5
3.98
89.7
4.00
95.3
4.03
80.3
4.66
85.0
4.71
89.5
4.75
81.3
4.51
86.1
4.54
91.2
4.57
82.1
4.34
87.3
4.36
92.4
4.38
79.4
4.86
83.8
4.90
88.5
4.95
80.3
4.69
85.0
4.73
89.9
4.76
81.0
4.53
86.0
4.55
91.0
4.57
78.3
5.06
82.6
5.10
87.4
5.16
79.3
4.90
83.5
4.92
88.4
4.97
79.9
4.73
84.7
4.75
89.8
4.78
76.2
5.51
80.8
5.56
85.0
5.61
76.9
5.33
81.5
5.37
85.9
5.41
77.9
5.17
82.4
5.19
87.0
5.21
74.7
6.05
78.7
6.10
82.7
6.14
75.1
5.86
79.4
5.89
83.7
5.93
75.9
5.68
80.1
5.70
84.7
5.72
EER
20.2
21.3
22.4
21.6
22.8
24.0
23.1
24.5
25.9
18.0
19.0
20.0
19.1
20.2
21.4
20.4
21.7
23.0
15.9
16.8
17.7
16.8
17.9
19.0
17.9
19.1
20.3
13.9
14.8
15.6
14.8
15.7
16.7
15.7
16.7
17.8
13.1
13.8
14.6
13.8
14.7
15.6
14.6
15.6
16.6
12.2
12.9
13.6
12.9
13.7
14.5
13.6
14.5
15.5
10.6
11.2
11.9
11.2
11.9
12.6
11.8
12.6
13.4
9.1
9.6
10.2
9.5
10.2
10.8
10.1
10.8
11.5
Entering Pressure Entering
Total
Heat of
Power
Fluid Temp Drop PSI Air Temp Capacity Absorption Input COP
(F)
(FOH)
(F)
(MBtuh)
(MBtuh)
(kW)
52.5
60
38.1
4.16
3.7
1.0
51.6
70
35.9
4.56
3.3
(2.3)
51.9
80
33.7
4.99
3.0
54.0
60
39.4
4.20
3.8
1.6
30
54.0
70
37.3
4.59
3.4
(3.8)
52.9
80
34.2
5.02
3.1
55.8
60
41.6
4.23
3.9
3.4
55.3
70
38.1
4.63
3.5
(7.9)
54.4
80
37.2
5.07
3.1
59.7
60
44.6
4.29
4.1
0.9
59.0
70
42.5
4.70
3.7
(2.2)
57.8
80
40.1
5.14
3.3
61.6
60
46.5
4.33
4.2
1.6
40
60.7
70
44.3
4.74
3.8
(3.7)
59.8
80
42.1
5.19
3.4
64.2
60
49.1
4.38
4.3
3.3
63.0
70
47.1
4.79
3.9
(7.6)
61.5
80
43.6
5.23
3.4
67.2
60
52.0
4.43
4.4
0.9
66.4
70
49.8
4.85
4.0
(2.1)
65.8
80
47.6
5.31
3.6
70.4
60
54.6
4.48
4.6
1.5
50
68.2
70
51.4
4.89
4.1
(3.5)
68.9
80
48.7
5.36
3.8
73.2
60
57.9
4.54
4.7
3.2
72.6
70
54.0
4.96
4.3
(7.3)
70.3
80
51.9
5.42
3.8
75.6
60
59.6
4.58
4.8
0.9
74.5
70
57.0
5.01
4.4
(2.0)
73.6
80
54.4
5.49
3.9
79.3
60
63.0
4.65
5.0
1.5
60
77.9
70
60.0
5.08
4.5
(3.4)
76.0
80
56.7
5.55
4.0
82.7
60
66.8
4.73
5.1
3.1
78.9
70
61.3
5.12
4.5
(7.1)
79.4
80
60.0
5.62
4.1
84.6
60
68.0
4.75
5.2
0.9
82.6
70
64.6
5.18
4.7
(2.0)
81.8
80
61.7
5.67
4.2
88.5
60
72.1
4.84
5.4
1.4
70
86.9
70
69.1
5.27
4.8
(3.3)
85.4
80
65.1
5.75
4.4
93.3
60
76.1
4.93
5.6
3.0
91.2
70
72.3
5.36
5.0
(6.9)
89.3
80
68.4
5.84
4.5
93.8
60
76.6
4.94
5.6
0.8
92.1
73.3
5.38
5.0
70
(1.9)
90.6
80
69.9
5.87
4.5
98.4
60
80.9
5.03
5.7
1.4
80
96.4
70
77.2
5.47
5.2
(3.2)
94.5
80
73.9
5.96
4.6
103.7
60
85.8
5.14
5.9
2.9
101.4
70
81.8
5.57
5.3
(6.6)
99.1
80
77.2
6.06
4.8
Operation Not Recommended
ANTIFREEZE CORRECTION TABLE
ANTIFREEZE
TYPE
ANTIFREEZE %
Total Capacity
1.000
0.997
0.994
0.990
0.983
0.979
0.975
0.997
0.996
0.994
0.992
0.998
0.996
0.992
0.986
0.997
0.995
0.992
0.988
0.985
0
5
10
15
25
30
35
5
10
15
20
5
10
15
25
5
10
15
25
30
Propylene
Glycol
Methanol
Ethanol
Ethylene Glycol
COOLING
HEATING
EWT 90 F
EWT 30 F
Sensible Capacity
1.000
0.997
0.994
0.990
0.983
0.979
0.974
0.997
0.996
0.994
0.992
0.998
0.996
0.992
0.986
0.997
0.995
0.992
0.988
0.985
kW
1.000
1.004
1.006
1.009
1.016
1.020
1.024
1.003
1.005
1.008
1.011
1.002
1.004
1.006
1.009
1.003
1.004
1.005
1.009
1.012
Heating Capacity
1.000
0.989
0.986
0.978
0.960
0.950
0.940
0.990
0.979
0.970
0.961
0.981
0.960
0.944
0.917
0.993
0.986
0.980
0.970
0.965
WPD
CORRECTION
FACTOR
EWT 30 F
1.000
1.060
1.125
1.190
1.300
1.736
1.834
1.060
1.100
1.140
1.248
1.160
1.230
1.280
1.400
1.060
1.120
1.190
1.330
1.400
kW
1.000
0.997
0.995
0.988
0.979
0.974
0.969
0.997
0.993
0.990
0.987
0.994
0.988
0.983
0.974
0.998
0.996
0.993
0.990
0.987
LEGEND
EWT — Entering Water Temperature
WPD — Water Pressure Differential
CONSTANT TORQUE ECM MOTOR BLOWER PERFORMANCE DATA
50PTH,
PTV
UNIT
RATED
AIRFLOW
(Cfm)
950
024
036
048
060
070
FAN
SPEED
FACTORY
SETTING
5
825
4
725
3
650
2
500
1
1300
5
1100
4
950
3
Full Load
Part Load/Fan Only
Full Load
0.30
1,077
0.40
1,034
AIRFLOW (Cfm)
External Static Pressure (in. wg)
0.50
0.60
0.70
0.80
988
938
886
830
0.10
1,154
0.20
1,117
0.90
—
1.00
—
1.10
—
1.20
—
1,072
1,018
966
915
866
818
772
727
—
—
—
—
976
920
867
815
766
719
674
631
—
—
—
—
906
844
785
730
678
630
585
544
—
—
—
—
829
750
676
610
551
498
451
412
—
—
—
—
1,506
1,469
1,430
1,390
1,347
1,300
1,249
1,193
1,130
1,061
—
—
1,425
1,326
1,250
1,191
1,143
1,100
1,056
1,006
942
860
—
—
1,354
1,233
1,138
1,063
1,002
950
901
850
791
719
—
—
—
800
2
1,294
1,157
1,041
946
866
800
744
696
653
611
—
750
1
1,213
1,084
976
886
812
750
698
653
612
573
—
—
1800
5
1,950
1,912
1,880
1,852
1,826
1,800
1,771
1,737
1,695
1,644
—
—
1600
4
1,774
1,738
1,703
1,669
1,635
1,600
1,562
1,521
1,475
1,423
—
—
1400
3
1,565
1,526
1,493
1,463
1,432
1,400
1,363
1,319
1,265
1,199
—
—
1300
2
1,506
1,469
1,430
1,390
1,347
1,300
1,249
1,193
1,130
1,061
—
—
1100
1
1,425
1,326
1,250
1,191
1,143
1,100
1,056
1,006
942
860
—
—
2200
5
2,476
2,403
2,338
2,283
2,237
2,200
2,172
2,153
2,142
2,141
2,149
2,166
2000
4
2,170
2,135
2,100
2,066
2,033
2,000
1,968
1,937
1,907
1,877
1,848
1,819
1800
3
1,942
1,914
1,886
1,858
1,829
1,800
1,770
1,741
1,710
1,680
1,649
1,617
1600
2
1,766
1,729
1,693
1,660
1,629
1,600
1,573
1,548
1,526
1,505
1,487
1,470
1400
1
1,561
1,520
1,483
1,451
1,423
1,400
1,381
1,366
1,356
1,350
1,349
1,352
2500
5
2,723
2,671
2,622
2,578
2,537
2,500
2,467
2,437
2,412
2,390
2,372
2,358
2350
4
2,122
2,057
1,990
2100
3
1850
2
1600
1
Part Load/Fan Only
Full Load
Part Load/Fan Only
Full Load
Part Load/Fan Only
Full Load
Part Load/Fan Only
2,566
2,529
2,489
2,446
2,399
2,350
2,298
2,242
2,184
2,256
2,230
2,202
2,171
2,137
2,100
2,060
2,017
1,971
1,922
1,871
1,816
2,004
1,975
1,945
1,915
1,883
1,850
1,816
1,781
1,745
1,708
1,669
1,630
1,766
1,728
1,693
1,660
1,629
1,600
1,573
1,548
1,526
1,505
1,486
1,470
LEGEND
— — Operation Not Recommended
27
Performance data (cont)
ECM CONSTANT CFM MOTOR BLOWER PERFORMANCE DATA
50PTH,
PTV
UNIT
024
PART
LOAD
024
FULL
LOAD
036
PART
LOAD
036
FULL
LOAD
048
PART
LOAD
048
FULL
LOAD
060
PART
LOAD
060
FULL
LOAD
070
PART
LOAD
070
FULL
LOAD
RATED
AIRFLOW
(Cfm)
FAN
SPEED
ADJUSTMENT
725
High
+
650
Med
500
950
Low
0.10
725
0.20
725
0.30
725
Normal
650
650
650
650
650
650
650
500
500
500
500
500
500
High
+
950
950
950
950
950
825
Med
Normal
825
825
825
825
725
950
Low
High
+
725
950
725
950
725
950
725
950
800
Med
Normal
800
800
800
750
1300
Low
High
+
750
1,300
750
1,300
750
1,300
1100
Med
Normal
1,100
1,100
950
1400
Low
High
+
950
1,400
950
1,400
1300
Med
Normal
1,300
1100
1800
Low
High
+
1,100
1,800
0.80
725
0.90
1.00
—
—
650
—
—
500
500
—
—
950
950
950
—
—
825
825
825
825
—
—
725
950
725
950
725
950
725
950
—
950
—
950
800
800
800
800
800
800
800
750
1,300
750
1,300
750
1,300
750
1,300
750
1,300
750
1,300
750
1,300
1,100
1,100
1,100
1,100
1,100
1,100
1,100
1,100
950
1,400
950
1,400
950
1,400
950
1,400
950
1,400
950
1,400
950
1,400
950
1,400
1,300
1,300
1,300
1,300
1,300
1,300
1,300
1,300
1,300
1,100
1,800
1,100
1,800
1,100
1,800
1,100
1,800
1,100
1,800
1,100
1,800
1,100
1,800
1,100
1,800
1,100
1,800
1600
Med
Normal
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1400
1800
Low
High
+
1,400
1,800
1,400
1,800
1,400
1,800
1,400
1,800
1,400
1,800
1,400
1,800
1,400
1,800
1,400
1,800
1,400
1,800
1,400
1,800
1600
Med
Normal
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1400
2200
Low
High
+
1,400
2,200
1,400
2,200
1,400
2,200
1,400
2,200
1,400
2,200
1,400
2,200
1,400
2,200
1,400
2,200
1,400
2,200
1,400
2,200
2000
Med
Normal
2,000
2,000
2,000
2,000
2,000
2,000
2,000
2,000
2,000
2,000
1800
2100
Low
High
+
1,800
2,100
1,800
2,100
1,800
2,100
1,800
2,100
1,800
2,100
1,800
2,100
1,800
2,100
1,800
2,100
1,800
2,100
1,800
2,100
1850
Med
Normal
1,850
1,850
1,850
1,850
1,850
1,850
1,850
1,850
1,850
1,850
1600
2500
Low
High
+
1,600
2,500
1,600
2,500
1,600
2,500
1,600
2,500
1,600
2,500
1,600
2,500
1,600
2,500
1,600
2,500
1,600
2,500
1,600
2,500
2350
Med
Normal
2,350
2,350
2,350
2,350
2,350
2,350
2,350
2,350
2,350
2,350
2100
Low
-
2,100
2,100
2,100
2,100
2,100
2,100
2,100
2,100
2,100
2,100
LEGEND
— — Operation Not Recommended
28
AIRFLOW (Cfm)
External Static Pressure (in. wg)
0.40
0.50
0.60
0.70
725
725
725
725
50PTH,PTV SOUND DATA
OCTAVE BAND SOUND POWER LEVELS dB, re 10-12 WATTS
CENTER FREQUENCY - Hz
UNIT SIZE
Casing
Radiated
024
Ducted
Discharge
Casing
Radiated
036
Ducted
Discharge
Casing
Radiated
048
Ducted
Discharge
Casing
Radiated
060
Ducted
Discharge
Casing
Radiated
070
Ducted
Discharge
LOAD
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
Cooling Part
Cooling Full
Heating Part
Heating Full
FAN Only
63
125
250
500
1000
2000
4000
8000
79
80
74
74
73
75
76
77
77
75
75
75
74
73
66
78
89
79
80
79
75
77
77
76
69
82
88
81
83
86
82
79
76
82
71
89
94
88
94
87
82
80
75
77
73
92
97
92
96
93
66
63
66
65
61
67
68
67
70
67
61
65
60
66
53
65
71
65
68
66
69
75
69
75
56
70
75
69
74
70
66
72
67
74
60
73
79
74
79
73
68
72
71
74
63
78
83
79
82
79
60
60
59
61
56
60
62
60
62
60
53
55
52
57
48
56
59
56
59
56
56
60
58
69
56
59
64
60
64
60
58
62
62
63
57
63
68
63
68
63
61
63
63
64
61
67
72
68
73
68
54
54
54
53
51
67
68
65
68
66
50
52
50
51
45
61
63
61
63
61
52
53
52
53
49
63
67
64
67
63
55
58
57
58
53
67
70
67
70
67
57
59
59
60
55
69
72
70
73
70
53
54
52
54
48
63
65
63
65
63
45
49
44
48
42
59
62
59
62
59
50
53
51
53
48
63
66
63
66
62
51
55
52
56
49
63
68
64
68
64
52
54
52
55
51
68
73
69
74
69
44
47
43
45
43
59
61
58
61
59
39
43
38
42
36
55
59
56
59
55
43
48
43
47
43
59
64
60
64
60
45
49
47
49
44
61
66
61
66
62
49
51
48
50
49
66
70
66
70
66
38
40
38
39
38
56
58
56
59
56
34
41
33
39
29
53
57
53
58
53
36
40
35
39
35
58
62
58
63
58
42
47
47
46
39
60
66
60
66
60
44
46
44
45
44
64
69
64
69
64
31
37
31
34
30
49
52
49
53
49
31
40
30
36
24
46
51
46
52
46
32
36
31
34
27
52
58
53
58
52
37
42
47
42
29
54
61
54
61
54
36
39
40
37
42
59
64
59
64
59
A WEIGHTED OVERALL
(dBA)
AHRIAHRI260:2011
260:2001
(50 Hz(100 Hz10 kHz)
10 kHz)
59
58
59
58
58
57
58
58
54
53
68
63
70
67
67
63
70
67
67
63
53
52
56
55
53
52
56
55
48
47
64
63
68
67
64
63
67
67
64
63
57
57
62
61
58
57
63
63
53
52
67
67
72
71
68
67
71
71
68
67
59
57
62
61
60
60
63
62
55
55
70
69
75
74
70
70
75
74
70
70
61
59
62
61
61
61
63
63
58
58
74
73
78
77
74
74
79
78
74
74
29
Electrical data
50PTH,PTV BLOWER MOTOR ELECTRICAL DATA
RATED
VOLTAGE
v-ph-Hz
VOLTAGE
MIN/MAX
208/230-1-60
265/277-1-60
208/230-3-60
460-3-60
208/230-1-60
265/277-1-60
208/230-3-60
460-3-60
208/230-1-60
208/230-3-60
460-3-60
208/230-1-60
208/230-3-60
460-3-60
208/230-1-60
208/230-3-60
460-3-60
197/253
—
197/253
—
197/253
—
197/253
—
197/253
197/253
—
197/253
197/253
—
197/253
197/253
—
50PT
UNIT SIZE
50PT024
50PT036
50PT048
50PT060
50PT070
FLA
HACR
LRA
MAX
MIN
RLA
—
—
—
—
—
—
COMPRESSOR
QTY
RLA
LRA
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
11.7
9.1
6.5
3.5
15.3
13.0
11.6
5.7
21.2
14.0
6.4
27.1
16.5
7.2
29.7
17.6
8.5
58.3
54.0
55.4
28.0
83.0
72.0
73.0
38.0
104.0
83.1
41.0
152.9
110.0
52.0
179.2
136.0
66.1
TOTAL UNIT CONST TORQUE MOTOR
(STANDARD)
MIN CIRCUIT MAX FUSE/
FLA
AMPS
HACR
2.8
17.4
25
2.6
14.0
20
2.8
10.9
15
2.1
6.4
15
6.0
25.1
35
4.9
21.2
30
6.0
20.5
30
3.2
10.4
15
6.0
32.4
50
6.0
23.5
35
3.2
11.3
15
7.6
41.5
60
7.6
28.3
40
4.0
13.1
20
7.6
44.7
70
7.6
29.6
45
4.0
14.6
20
TOTAL UNIT ECM CONST AIR FLOW
MOTOR (OPTION)
MIN CIRCUIT
MAX FUSE/
FLA
AMPS
HACR
2.8
17.4
25
2.6
14.0
20
2.8
10.9
15
2.6
6.9
15
6.8
25.9
35
5.5
21.8
35
6.8
21.3
30
5.5
12.6
15
6.8
33.2
50
6.8
24.3
35
5.5
13.5
15
9.1
43.0
70
9.1
29.8
45
6.9
16.0
20
9.1
46.2
70
9.1
31.1
45
6.9
17.5
25
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Locked Rotor Amps
Maximum
Minimum
Rated Load Amps
50PTH,PTV UNITS WITH EH OPTION — CONSTANT TORQUE ECM MOTOR ELECTRICAL DATA
50PT
EH RATED kW
UNIT SIZE
024
036
048
060
070
EH
FLA
MCA
MOP
30
—
—
—
—
STAGE
HEATER WATTS
4.8
4.8
9.6
4.8
9.6
1
1
1
1
1
240
4,800
4,800
9,600
4,800
9,600
14.4
2
14,400
10,800
4.8
9.6
1
1
4,800
9,600
3,600
7,200
14.4
2
14,400
10,800
19.2
2
19,200
14,000
4.8
9.6
1
1
4,800
9,600
3,600
7,200
14.4
2
14,400
10,800
19.2
2
19,200
14,000
LEGEND
Electric Heat
Full Load Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
208
3,600
3,600
7,200
3,600
7,200
HEATER AMPS MOTOR FLA CIRCUIT
240
208
FUSES
(A)
20.0
17.3
2.8
—
20.0
17.3
6.0
—
40.0
34.6
6.0
—
20.0
17.3
6.0
—
40.0
34.6
6.0
—
F1/F2
60.0
51.9
6.0
F3/F4
20.0
17.3
7.6
—
40.0
34.6
7.6
—
F1/F2
60.0
51.9
7.6
F3/F4
F1/F2
80.0
69.2
7.6
F3/F4
20.0
17.3
7.6
—
40.0
34.6
7.6
—
F1/F2
60.0
51.9
7.6
F3/F4
F1/F2
80.0
69.2
7.6
F3/F4
MOP
MCA
240
28.5
32.5
57.5
32.5
57.5
208
25.1
29.1
50.8
29.1
50.8
240
30
35
60
35
60
208
30
30
60
30
60
82.5
72.4
90
80
34.5
59.5
31.1
52.8
35
60
35
60
84.5
74.4
90
80
109.5
96.0
110
100
34.5
52.8
31.1
52.8
35
60
35
60
84.5
74.4
90
80
109.5
96.0
110
100
50PTH,PTV UNITS WITH ELECTRIC HEAT OPTION — CONSTANT AIRFLOW ECM MOTOR ELECTRICAL DATA
50PT
EH RATED kW
UNIT SIZE
024
036
048
060
070
EH
FLA
MCA
MOP
—
—
—
—
STAGE
HEATER WATTS
4.8
4.8
9.6
4.8
9.6
1
1
1
1
1
240
4,800
4,800
9,600
4,800
9,600
208
3,600
3,600
7,200
3,600
7,200
14.4
2
14,400
10,800
4.8
9.6
1
1
4,800
9,600
3,600
7,200
14.4
2
14,400
10,800
19.2
2
19,200
14,000
4.8
9.6
1
1
4,800
9,600
3,600
7,200
14.4
2
14,400
10,800
19.2
2
19,200
14,000
HEATER AMPS MOTOR FLA CIRCUIT
240
208
FUSES
(A)
20.0
17.3
2.8
—
20.0
17.3
6.8
—
40.0
34.6
6.8
—
20.0
17.3
6.8
—
40.0
34.6
6.8
—
F1/F2
60.0
51.9
6.8
F3/F4
20.0
17.3
9.1
—
40.0
34.6
9.1
—
F1/F2
60.0
51.9
9.1
F3/F4
F1/F2
80.0
69.2
9.1
F3/F4
20.0
17.3
9.1
—
40.0
34.6
9.1
—
F1/F2
60.0
51.9
9.1
F3/F4
F1/F2
80.0
69.2
9.1
F3/F4
MCA
240
28.5
33.5
58.5
33.5
58.5
MOP
208
25.1
30.1
51.8
30.1
51.8
240
30
35
60
35
60
208
30
35
60
35
60
83.5
73.4
90
80
36.4
61.4
33.0
54.6
40
70
35
60
86.4
76.3
90
80
111.4
97.9
125
100
36.4
61.4
33.0
54.6
40
70
35
60
86.4
76.3
90
80
111.4
97.9
125
100
LEGEND
Electric Heat
Full Load Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
31
Application data
Aquazone™ water source heat pump products are available
in a flexible, efficient array of models, which can be used in
all types of water loop, ground water, and ground loop systems. Utilize Aquazone products to provide optimal energy
efficient solutions and adapt to the most challenging design
requirements.
• Water Source Heat Pump Efficiency/Operational Cost
Comparison chart
• system variations such as a system without a boiler, variable pumping, and variable air volume (VAV) for interior
use
AQUAZONE PRODUCT GUIDE
To utilize Aquazone units in ground water applications, extended range should be specified. This will provide factoryinstalled insulation on the coaxial coil to prevent condensate from dripping when entering water temperatures are
below 60 F. In addition, the copper coaxial coil installed on
the Aquazone units may not be suitable for all water conditions. Refer to the Water Conditioning section for proper
coaxial coil material selection.
Surface water system — This system is typically located
near a lake or pond. In this application, the loop can be
submerged in a series of coils beneath the water surface.
The number of coils required depends on system load and
design. This application requires minimum piping and
excavation.
Open loop system — This system is used where ground
water is plentiful. In this application, ground water is
pumped through supply piping from the well to the building.
The water is then pumped back into the ground through a
discharge well as it leaves the building. An additional heat
exchanger is usually installed between the building water
piping system and the ground water piping system. This design limits the amount of piping and excavation required.
Aquazone units are provided with a standard TXV (thermostatic expansion valve) and are rated to extremely low
temperatures to self-adjust the refrigeration circuit. To conserve water on this type of system, a slow opening/closing
solenoid valve is recommended. Depending on loop water
temperatures a water regulating valve may be required.
50 SERIES
50HQP,VQP
TYPE
SIZE (tons)
Large Capacity
6-20 (HQP)
6-30 (VQP)
50PC
Compact
1/ -6
2
50PS
Premium
Efficiency
1/ -6
2
High Efficiency
Console
3/ -11/
4
2
Premium
Efficiency
2-6
50PEC
50PT
50PSW
Water-to-Water
3-35
APPLICATION
Environmentally balanced unit with Puron®
refrigerant (R-410A) designed to handle
large zoned areas for all geothermal and
boiler/tower applications.
Compact WSHP with Puron refrigerant
(R-410A) for boiler/tower, ground water, or
ground loop systems.
Premium, ultra efficient unit with Puron
refrigerant (R-410A) for new boiler/tower,
ground water, or ground loop systems.
Efficient console unit with Puron refrigerant
(R-410A) and attractive design for finished
interior, under-window installations.
Premium, ultra efficient 2-stage unit with
Puron refrigerant (R-410A) for new boiler/
tower, ground water, or ground loop
systems.
Efficient unit with Puron refrigerant
(R-410A) serves as an alternative to preheat or cool air. Unit can be used as a
stand-alone or supplemental boiler/chiller
in most hydronic heating applications. Also
conditions process fluids, lubricants, and
refrigerants.
Water loop system
Water loop (or boiler/tower) system applications typically
include a number of units plumbed to a common piping
system. For optimal performance, this system should be
designed between 2.25 and 3 gpm per ton of cooling
capacity. The system is comprised of highly efficient packaged reverse cycle heat pump units interconnected by a
water loop. The water circuit serves as both a sink and
source for heat absorption and rejection and is designed
for entering water temperatures between 60 F and 90 F.
Within this temperature range units can heat or cool as required from the same water source. Transferring heat from
warm to cold spaces in the building, whenever they coexist, conserves energy rather than creating new heat.
Refer to the Carrier Water Source Heat Pump System Design Guide for assistance with the design of water
loop systems. The guide includes a practical approach
for the latest and most current design recommendations
including:
• product application, including horizontal, vertical, console, rooftop and water-to-water applications
• ventilation methods and system design, including
energy recovery
• acoustical considerations for different product types
• addressing indoor air quality (IAQ) issues such as condensate removal and humidity control
• air distribution design including diffuser selection/
layout and ductwork design
• hydronic system design including pipe sizing/layout and
boiler/tower sizing
• control configurations such as standalone, DDC (direct
digital control), DCV (demand controlled ventilation),
and VVT® (variable volume and temperature) controls
32
Ground water systems
Ground loop systems
There are many commonly specified designs for ground
loop applications. Typical designs include vertical loops
and horizontal loops. In some applications, water is piped
from the ground or lake directly to the water source heat
pump. Piping is limited to the amount of pipe required to
get the water from the source to the unit.
NOTE: When utilizing Aquazone water source heat pumps
in ground loop systems, refer to design considerations in
the ground water system section.
Horizontal ground loop — This system is used when
adequate space is available and trenching can be easily accomplished. A series of parallel pipes are laid out in trenches 3 to 6 ft below the ground surface, and then back-filled.
Often, multiple pipes are used to maximize the heat transfer capability of each trench. The amount of pipe and the
size of the ground loop field are based on ground conditions, heating, and cooling requirements of the application
and system design.
Vertical ground loop — This system is used in vertical
borehole applications. This design is well suited for retrofit
applications when space is limited or where landscaping is
already complete and minimum disruption of the site is desired. The vertical ground loop system contains a single
loop of pipe inserted into a hole. The hole is back-filled and
grouted after the pipe is inserted. The completed loop is
concealed below ground. The number of loops required depends on ground conditions, heating and cooling requirements, and the depth of each hole.
Hybrid systems — In some applications, it may be beneficial to incorporate a cooling tower into the ground loop
system to reduce the overall cost. A hybrid system discards
excess heat into the air and increases the cooling performance of the ground loop.
Condensate drainage
Venting — Condensate lines should be properly vented to
prevent fan pressure from causing water to hang up in the
piping. Condensate lines should be pitched to assure full
drainage of condensate under all load conditions. Chemical
treatment should be provided to remove algae in the condensate pans and drains in geographical areas that are
conducive to algae growth.
Trapping — Condensate trapping is essential on every
water source heat pump unit. A trap is provided to prevent
the backflow of moisture from the condensate pan and into
the fan intake or downstream into the mechanical system.
The water seal or the length of the trap depends on the
positive or negative pressure on the drain pan. As a rule of
thumb, the water seal should be sized for 1 in. for every
1 in. of negative pressure on the unit. The water seal is the
distance from the bottom of the unit condensate piping
connection to the bottom of the condensate drain line runout piping. Therefore, the trap size should be double the
water seal dimension.
Horizontal units — Horizontal units should be sloped toward the drain at a 1/4 in. per foot pitch. If it is not possible
to meet the pitch requirement, a condensate pump should
be designed and installed at the unit to pump condensate
to a building drain. Horizontal units are not internally
trapped; therefore an external trap is necessary. Each unit
must be installed with its own individual trap and means to
flush or blow out the condensate drain. The design of a
common trap or vent for multiple units is not acceptable.
The condensate piping system should not be designed with
a pipe size smaller than the drain connection pipe size.
Vertical units — Vertical units utilize a condensate hose
inside the cabinet that acts as a trapping loop, therefore an
external trap is not necessary. Each unit must be installed
with its own vent and means to flush or blow out the
condensate drain lines. Do not install a common trap or
vent on vertical units.
Water conditioning
In some applications, maintaining proper water quality
may require the use of higher corrosion protection for
the water-to-refrigerant heat exchanger. Water quality varies from location to location and is unique for each job.
Water characteristics such as pH value, alkalinity, hardness, and specific conductance are of importance when
considering any WSHP application. Water typically includes impurities and hardness that must be removed. The
required treatment will depend on the water quality as
well as type of system. Water problems fall into three main
categories:
1. Scale formation caused by hard water reduces the
heat transfer rate and increases the water pressure
drop through the heat exchanger. As water is heated,
minerals and salts are precipitated from a solution
and deposited on the inside surface of the pipe or
tube.
2. Corrosion is caused by absorption of gases from the
air coupled with water on exposed metal. Corrosion
is also common in salt-water areas.
3. Organic growths such as algae can reduce the heat
transfer rate by forming an insulating coating on the
inside tube surface. Algae can also promote corrosion
by pitting.
NOTE: In most commercial water loop applications,
Aquazone WSHP units use copper water-to-refrigerant
heat exchanger. Units can and should be equipped with a
cupro-nickel heat exchanger for applications where water
is outside the standard contaminant limits for a copper
heat exchanger.
33
Application data (cont)
WATER QUALITY GUIDELINES
CONDITION
HX MATERIAL*
CLOSED
RECIRCULATING†
OPEN LOOP AND RECIRCULATING WELL**
Scaling Potential — Primary Measurement
Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below.
pH/Calcium
All
N/A
pH < 7.5 and Ca Hardness, <100 ppm
Hardness Method
Index Limits for Probable Scaling Situations (Operation outside these limits is not recommended.)
Scaling indexes should be calculated at 150 F for direct use and at 90 F for indirect HX use. A monitoring plan should be implemented.
Ryznar Stability Index
6.0 - 7.5
All
N/A
If >7.5 minimize steel pipe use.
Langelier Saturation Index
–0.5 to +0.5
All
N/A
If <–0.5 minimize steel pipe use.
Based upon 150 F direct well, 85 F indirect well HX.
Iron Fouling
Iron Fe2+ (Ferrous)
<0.2 ppm (Ferrous)
All
N/A
(Bacterial Iron Potential)
If Fe2+ (ferrous) >0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.
Iron Fouling
<0.5 ppm of Oxygen
All
N/A
Above this level deposition will occur.
Corrosion Prevention††
pH
6 - 8.5
6 - 8.5
All
Monitor/treat as needed.
Minimize steel pipe below 7 and no open tanks with pH <8.
<0.5 ppm
Hydrogen Sulfide (H2S)
At H2S>0.2 ppm, avoid use of copper and cupronickel piping or HXs.
All
N/A
Rotten egg smell appears at 0.5 ppm level.
Copper alloy (bronze or brass) cast components are okay to <0.5 ppm.
Ammonia Ion as Hydroxide,
<0.5 ppm
Chloride, Nitrate and Sulfate
All
N/A
Compounds
Maximum Chloride Levels
Maximum allowable at maximum water temperature.
50 F (10 C)
75 F (24 C)
100 F (38 C)
Copper
N/A
<20 ppm
NR
NR
Cupronickel
N/A
<150 ppm
NR
NR
304 SS
N/A
<400 ppm
<250 ppm
<150 ppm
316 SS
N/A
<1000 ppm
<550 ppm
<375 ppm
Titanium
N/A
>1000 ppm
>550 ppm
>375 ppm
Erosion and Clogging
Particulate Size and Erosion
<10 ppm of particles and a
maximum velocity of 6 fps. <10 ppm (<1 ppm “sandfree” for reinjection) of particles and a maximum
All
velocity of 6 fps. Filtered for maximum 800 micron size. Any particulate that
Filtered for maximum
is not removed can potentially clog components.
800 micron size.
Brackish
Use cupronickel heat exchanger when concentrations of calcium or
All
N/A
sodium chloride are greater than 125 ppm are present. (Seawater is
approximately 25,000 ppm.)
HX
N/A
NR
SS
LEGEND
— Heat Exchanger
— Design Limits Not Applicable Considering Recirculating
Potable Water
— Application Not Recommended
— Stainless Steel
*Heat exchanger materials considered are copper, cupronickel, 304 SS
(stainless steel), 316 SS, titanium.
†Closed recirculating system is identified by a closed pressurized piping
system.
**Recirculating open wells should observe the open recirculating design
considerations.
34
††If the concentration of these corrosives exceeds the maximum allowable
level, then the potential for serious corrosion problems exists.
Sulfides in the water quickly oxidize when exposed to air, requiring that no
agitation occur as the sample is taken. Unless tested immediately at the
site, the sample will require stabilization with a few drops of one Molar
zinc acetate solution, allowing accurate sulfide determination up to
24 hours after sampling. A low pH and high alkalinity cause system problems, even when both values are within ranges shown. The term pH refers
to the acidity, basicity, or neutrality of the water supply. Below 7.0, the
water is considered to be acidic. Above 7.0, water is considered to be
basic. Neutral water registers a pH of 7.0.
To convert ppm to grains per gallon, divide by 17. Hardness in mg/l is
equivalent to ppm.
Acoustical design
Sound power levels represent the sound as it is produced
by the source, the WSHP unit, with no regard to attenuation between the source and the space. Acoustical design
goals are necessary to provide criteria for occupied spaces
where people can be comfortable and communicate effectively over the background noise of the air-conditioning
system and other background noise sources.
Acoustical design goals are desirable sound pressure levels within a given conditioned space and are represented
by noise criteria (NC) curves. Noise criteria curve levels represent a peak over a full spectrum of frequencies. A high
value in a low frequency band has the same effect on NC
level as a lower value in a high frequency band. It is important that sound levels be balanced over the entire spectrum
relative to the NC curve. The lower the NC criteria curve,
the more stringent the room acoustical design must be to
meet the design goals.
It is important to know how to convert NC levels from
the unit ratings in terms of sound power (Lw). This conversion depends on the specifics of the acoustical environment of the installation.
The resulting calculations are compared to the NC curve
selected for the area to assess the acoustical design.
Some of the factors that affect conversion of sound
power to sound pressure and consequent NC level include:
• type of acoustical ceiling
• use of metal or flex duct
• absorption in the occupied space
• location in the occupied space
• open or closed layout plan
• use of open or ducted returns
• orientation of unit to occupant
• use of lined or unlined duct
WSHP sound control
The analysis of the projected sound level in the conditioned
space caused by a WSHP unit located in a ceiling plenum is
quite involved. The key is to have good sound power ratings (Lw) in dB on the equipment to determine the sound
attenuation effect of the ductwork, ceiling and room. In
combination with utilizing standard Aquazone™ equipment
attenuating features or the advanced mute package features, suggestions for horizontal and vertical unit sound design are provided to design around the WSHP units.
Horizontal units
Use the following guidelines for layout of Aquazone horizontal units to minimize noise:
1. Obtain sound power ratings in accordance with latest
standards from manufacturers to select the quietest
equipment.
2. Do not locate units over a space with a required NC
of 40 or less. Instead, locate units above less sensitive
noise areas such as above or in equipment rooms,
utility closets, restrooms, storage rooms, or above
corridors.
3. Provide at least 10 feet between WSHP units to avoid
the additive effect of two noise sources.
4. Provide an acoustical pad underneath the WSHP unit
in applications where the unit must be mounted
above noise sensitive areas such as private offices or
conference rooms. The pad attenuates radiated noise.
Be sure the pad has an area at least twice that of the
WSHP footprint.
5. Maximize the installed height above the suspended
ceiling.
6. Be sure the WSHP unit is located at least 6 feet away
from any ceiling return grille to prevent line-of-sight
casing noise from reaching the space below.
7. Suspend the WSHP unit from the ceiling with hangers that utilize spring or neoprene type isolators to
reduce vibration transmission.
8. Utilize flexible electrical connections to the WSHP
unit. DO NOT USE NOT RIGID CONNECTIONS.
9. Utilize flexible loop water and condensate piping connections to the WSHP unit.
10. Use a canvas duct connector to connect the WSHP
discharge to the downstream duct system. This
reduces vibration-induced noise.
11. Provide acoustic interior lining for the first 20 feet of
discharge duct, or until the first elbow is reached. The
elbow prevents line-of-site sound transmission in the
discharge duct.
12. Provide turning vanes in ductwork elbows and tees to
reduce air turbulence.
13. Size the sheet metal supply duct with velocities no
greater than 1000 fpm.
14. Ensure ductwork is rigid.
15. Use round duct whenever possible to further reduce
noise.
16. Allow at least 3 equivalent duct diameters of straight
duct upstream and downstream of the unit before
allowing any fittings, transitions, etc.
17. Seal all penetrations around duct entering the space.
18. Provide a 4-ft run-out duct made of flexible material
to connect a diffuser to the supply trunk duct. The
flex duct provides an “attenuating end-effect” and
reduces duct-transmitted sound before it reaches the
space. Typically a 6 dB sound reduction can be
accomplished with the use of flex duct.
19. Locate the run-out duct balancing damper as far away
from the outlet diffuser as possible. Locating the
balancing damper at the trunk duct exit is the best
location.
20. If return air is drawn through a ceiling plenum, provide an acoustically lined return duct elbow or “L”
shaped boot at the WSHP to eliminate line-of-sight
noise into the ceiling cavity and possibly through ceiling return air grilles. Face the elbow or boot away
from the nearest adjacent WSHP unit to prevent additive noise.
21. Do not hang suspended ceiling from the ductwork.
35
Application data (cont)
Vertical units
All guidelines established for horizontal units also apply for
vertical units. In addition, since vertical units tend to be installed in small equipment rooms or closets, the following
guidelines apply:
1. Mount the unit on a pad made of high-density sound
absorbing material such as rubber or cork. Extend the
pad beyond the WSHP unit footprint by at least
6 inches in each direction.
2. Since the unit returns airflow through a grille
mounted in a closet door, provide a sound barrier or
some other modification of the closet to prevent lineof-sight noise into the space.
3. Follow good duct design practice in sizing and locating the connection of the WSHP discharge to the
supply duct system. Use an elbow with turning vanes
and bent in the direction of the fan rotation to minimize turbulence. Make any duct transitions as smooth
and as gradual as possible to minimize turbulence and
loss of fan static pressure.
Solenoid valves
In applications using variable flow pumping, solenoid
valves can be field-installed and operated from the control
board in the Aquazone™ WSHP unit.
Freeze protection
Applications where systems are exposed to outdoor
temperatures below freezing (32 F) must be protected from
freezing. The most common method of protecting water
systems from freezing is adding glycol concentrations into
the water. Design care should be used when selecting both
the type and concentrations of glycol utilized due to the
following:
• Equipment and performance may suffer with high concentrations of glycol and other antifreeze solutions.
• Loss of piping pressure may increase greatly, resulting
in higher pumping costs.
• Higher viscosity of the mixture may cause excess corrosion and wear on the entire system.
• Acidity of the water may be greatly increased, promoting corrosion.
• Glycol promotes galvanic corrosion in systems of dissimilar metals. The result is corrosion of one metal by
the other, causing leaks.
Hot gas reheat
Hot gas reheat (HGR) allows the user to not only control
space temperature, but also humidity levels within the conditioned space. Excessive moisture in the space can
36
promote mold growth leading to damage in the structure
or interior surfaces, as well as reducing the air quality and
creating an unhealthy environment.
Possible causes of excess humidity could be a byproduct
of the unit having to operate under a widely varying load,
an oversized short cycling unit, a high percentage of unconditioned outside air being introduced into the space, a
high latent load in the space or any location where humidity infiltration is a problem.
Typical unit control is by a wall-mounted thermostat that
senses temperature in the occupied space. By utilizing a
humidistat in addition to the thermostat, part load units
with hot gas reheat are able to control the humidity levels
in the space well. The hot gas reheat option allows cooling
and dehumidification to satisfy both the thermostat and humidistat while preventing over-cooling of the space while in
the dehumidification mode.
Once the thermostat reaches set point temperature, and
is above humidity set point, the unit controller will energize
the reheat valve operating the unit in hot gas reheat mode,
first cooling and dehumidifying, then reheating the air (using hot refrigerant gas) before delivering it to the space,
usually 2° to 5° F below room temperature. The unit operates like a dehumidifier by reheating the air along a constant sensible heat line, while the relative humidity of the
leaving air is reduced. This option offers significant energy
savings over reheating air with electric heating coils.
The moisture removal capacity of a specific heat pump is
determined by the unit latent capacity rating. A heat
pump’s latent capacity can be determined by reviewing the
heat pump specification data sheets. Depending upon the
entering water and air conditions, a total and sensible capacity can be interpolated from the data sheets. Subtracting sensible capacity from total capacity yields latent capacity. Dividing the latent capacity by 1069 converts the
amount of moisture removal from Btuh to lb/hr.
A hot gas reheat valve and a reheat coil are optimal and
included in the refrigerant circuit. The refrigerant circuits in
the cooling and heating modes are identical to a standard
heat pump. In the reheat mode, the compressor discharge
gas is diverted through the reheat valve to the reheat coil
which is located downstream of the cooling coil. The superheated refrigerant gas reheats the air leaving the cooling coil. The hot refrigerant gas then passes though the
water to refrigerant coil where it is condensed to a liquid.
From this point the rest of the cooling cycle is completed
as in a regular heat pump. There are check valves to prevent refrigerant flow into the reheat coil during standard
cooling/heating cycles.
Controls — WSHP Open sequence of operation
The WSHP Open multi-protocol controller will control mechanical cooling, heating, hot gas reheat and waterside
economizer outputs based on its own space temperature
input and set points. An optional CO2 IAQ (indoor air quality) sensor mounted in the space can maximize the occupant comfort. The WSHP Open has its own hardware
clock that is automatically set when the heat pump software is downloaded to the board. Occupancy types are described in the scheduling section below. The following sections describe the functionality of the WSHP Open multiprotocol controller. All point objects that are referred to in
this sequence of operation will be referenced to the objects
as viewed in the BACview6 handheld user interface.
Scheduling
Scheduling is used to start/stop the unit based upon a time
period to control the space temperature to specified occupied heating and cooing set points. The controller is defaulted to control by occupied set points all the time, until
either a Time Schedule is configured with the Equipment
Touch™ interface, i-Vu® Open, or a third party control system Enables/Disables the BAS On/Off point. Your local
time and date must be set for these functions to operate
properly. The occupancy source can be changed to one of
the following:
Occupancy schedules — The controller will be occupied 24/7 until a Time schedule is configured using either,
i-Vu Open, Equipment Touch or a third party Enables/Disables the BAS On/Off point. This can be disabled by going
to Config>Unit>Occupancy Schedules and changing the
point from Enable to Disable.
NOTE: This point must be Enabled in order for i-Vu Open
or Bacview6 to assign a Time schedule to the controller.
Schedule_Schedule — The unit will operate according
to the schedule configured and stored in the unit. The
schedule is accessible via the Equipment Touch user interface, i-Vu Open, or Field Assistant. The daily schedule consists of a start/stop time (standard or 24 hour mode) and
seven days of the week, starting with Monday and ending
on Sunday.
Occupancy input contact (option) — If configured for
remote occupancy control (default), the WSHP Open controller has the capability to use an external dry contact closure to determine the occupancy status of the unit. You will
need to disable the Occupancy Schedules in order to utilize
the Occupancy Contact Input. The control will cause the
unit to go into an occupied mode whenever the abnormal
input is sensed. After the input returns to its normal state,
the unit will stay in the occupied mode for the configured
Occupancy Override Delay period (15 minutes default).
NOTE: Scheduling can only be controlled from one
source.
BAS (building automation system) on/off — For use
with a Building Automation System that supports network
scheduling, you will need to disable the Occupancy Schedules so the BAS system can control the unit through a network communication and the BAS scheduling function.
NOTE: Scheduling can only be controlled from one
source.
Global occupancy scheduling — The WSHP Open
controller has the capability to read the occupancy status
from another unit so that a group of WSHPs can be controlled from a single occupancy schedule. The local Occupancy Schedules must be disabled in order to utilize the
global occupancy input.
NOTE: Scheduling can only be controlled from one
source.
BACnet network occupancy input — The WSHP Open
controller has the capability to accept an external BACnet
Binary Network Input for occupancy control. This function
is only compatible with units used in BACnet systems. You
will need to configure the “System Occupancy” BACnet
network input point to locate the device and point name
where the external occupancy point information resides.
Also Occupancy Schedules must be disabled in order to
utilize this input.
NOTE: Scheduling can only be controlled from one
source.
Fire/smoke detector (FSD) input (field optional)
The WSHP Open controller has the capability to read the
status of a normally closed FSD contact input to determine
if a fire or smoke detector alarm is present. If the controller
determines an alarm condition is present, all heating, cooling and the fan are disabled. The normal state of the switch
is factory set to Normally Closed and cannot be changed.
Shutdown input
The WSHP Open controller has a shutdown input (software) which when set to its Active mode will cause the
WSHP to safely shut down in a controlled fashion. Heating
and cooling will be disabled after any minimum runtime
conditions expire and the fan will be disabled after the fan
off timer expires. All alarms are reset but any active alarm
will remain active. After the shutdown input transitions
from Active mode to Inactive mode, the WSHP Open controller will restart after the configured power fail restart delay expires.
Indoor fan
The indoor fan will operate in any one of three modes depending upon the user configuration selected. Fan mode
can be defined/selected as Auto, Continuous, or Always
On. In Auto mode the fan is in intermittent operation during both occupied and unoccupied periods. Continuous fan
is intermittent during unoccupied periods and continuous
during occupied periods. Always On operates the fan continuously during both occupied and unoccupied periods. In
the default mode, Continuous, the fan will be turned on
whenever any one of the following is true:
• It is in occupied mode. Determined by its occupancy
status.
• Whenever there is a demand for cooling or heating in
the unoccupied mode.
• When there is a call for dehumidification (optional).
When power is reapplied after a power outage, there
will be a configured time delay of 5 to 600 seconds before
starting the fan. There are also configured fan delays for
Fan On and Fan Off. The fan on delay defines the delay
time (0 to 30 seconds; default 10) before the fan begins to
37
Controls — WSHP Open sequence of operation (cont)
operate after heating or cooling is started while the fan off
delay defines the delay time (0 to 180 seconds; default 45)
the fan will continue to operate after heating or cooling is
stopped. The fan will continue to run as long as the compressors, heating stages, or the dehumidification relays are
on. If the SPT failure alarm or condensate overflow alarm
is active; the fan will be shut down immediately regardless
of occupancy state or demand.
Automatic 3-speed fan control — The WSHP Open
controller is capable of controlling up to three fan speeds. The
motor will operate at the lowest speed possible to provide quiet and efficient fan operation with the best latent capability.
The motor will increase speed if additional cooling or heating
is required to obtain the desired space temperature set point.
The control increases the motor's speed as the space temperature rises above the cooling or below the heating set point.
The amount of space temperature increase above or below
the set point required to increase the fan speed is user configurable in the set point. Also, the control will increase the fan
speed as the supply-air temperature approaches the configured minimum or maximum limits.
Fan speed control - during heating —
Whenever
heat is required and active, the control continuously monitors the supply-air temperature to verify it does not rise
above the configured Maximum Heating SAT Limit (110 F
default). As the SAT approaches this value, the control will
increase the fan speed as required to ensure the SAT will
remain 5° F below the limit. This feature provides the most
quiet and efficient operation by operating the fan at the
lowest speed possible.
Fan speed control - during cooling — Whenever mechanical cooling is required and active, the control continuously monitors the supply-air temperature to verify it does
not fall below the configured Minimum Cooling SAT Limit
(50 F default). As the SAT approaches this value, the control will increase the fan speed as required to ensure the
SAT will remain 5° F above the limit. Fan will operate at
lowest speed to maximize latent capacity during cooling.
Fan status (option)
An optional input can be configured as either an occupancy input contact or a fan status input. If configured as fan
status, the controller will compare the status of the fan to
the desired commanded state. Whenever the fan is commanded to run (ON), the fan status will be checked and verified to match the commanded state. If the fan status is not
on, then a fan status alarm will be generated after 1 minute
and the equipment's compressor(s) and auxiliary heat will
be disabled and the optional OA damper will close (if
equipped).
Cooling
The WSHP Open controller will operate one or two stages
of compression to maintain the desired cooling set point.
The compressor outputs are controlled by the PI (proportional-integral) cooling loop and cooling stages capacity algorithm. They will be used to calculate the desired number
of stages needed to satisfy the space by comparing the
space temperature (SPT) to the appropriate cooling set
point. The water side economizer, if applicable, will be
used for first stage cooling in addition to the compressor(s).
38
The following conditions must be true in order for the cooling algorithm to run:
• Cooling is set to Enable
• The Fire/Smoke Input and Shutdown modes are
inactive
• Heat mode is not active and the compressor time
guard(s) have expired
• Condensate Overflow input is Normal
• Fan Status is true (if option is enabled)
• If occupied, the SPT is greater than the occupied cooling set point
• Space temperature reading is valid
• If unoccupied, the SPT is greater than the unoccupied
cooling set point.
• If economizer cooling is available and active and the
economizer alone is insufficient to provide enough cooling.
• OAT is greater than the Cooling lockout temperature if
OAT is available
• Condenser Water Pump is on (if condenser water linkage active)
If all the above conditions are met, the compressors will
be energized as required, otherwise they will be de-energized. If cooling is active and should the SAT approach the
minimum SAT limit, the fan will be indexed to the next
higher speed. Should this be insufficient and if the SAT falls
further (equal to the minimum SAT limit), the fan will be indexed to the maximum speed. If the SAT still continues to
fall 5° F below the minimum SAT limit, all cooling stages
will be disabled.
During Cooling, the reversing valve output will be held
in the cooling position (either B or O type as configured)
even after the compressor is stopped. The valve will not
switch position until the heating mode is required.
The configuration screens contain the Min SAT parameter as well as cooling lockout based on outdoor air temperature (OAT), both can be adjusted to meet various specifications.
There is a 5-minute off time for the compressor as well
as a 5-minute time delay when staging up to allow the SAT
to achieve a stable temperature before energizing a second
stage of capacity. Likewise, a 45-second delay is used
when staging down.
After a compressor is staged off, it may be restarted
again after a normal time-guard period of 5 minutes and if
the supply-air temperature has increased above the minimum supply air temperature limit.
The WSHP Open controller provides a status input to
monitor the compressor operation. The status is monitored to determine if the compressor status matches the
commanded state. This input is used to determine if a refrigerant safety switch or other safety device has tripped
and caused the compressor to stop operating normally. If
this should occur, an alarm will be generated to indicate the
faulted compressor condition.
Reverse cycle heating
The WSHP Open controller will operate one or two stages
of compression to maintain the desired heating set point.
The compressor outputs are controlled by the heating PI
(proportional-integral) loop and heating stages capacity algorithm. They will be used to calculate the desired number
of stages needed to satisfy the space by comparing the
space temperature (SPT) to the appropriate heating set
point. The following conditions must be true in order for
the heating algorithm to run:
• Heating is set to Enable
• The Fire/Smoke Input and Shutdown modes are inactive
• Cool mode is not active and the compressor time guard
has expired
• Condensate Overflow input is Normal
• Fan Status is true (if option is enabled)
• If occupied, the SPT is less than the occupied heating
set point
• Space temperature reading is valid
• If unoccupied, the SPT is less than the unoccupied heating set point
• OAT is less than the Heating lockout temperature if
OAT is available.
• Condenser Water Pump is on (if condenser water linkage active)
If all the above conditions are met, the heating outputs
will be energized as required, otherwise they will be deenergized. If the heating is active and should the SAT approach the maximum SAT limit, the fan will be indexed to
the next higher speed. Should this be insufficient, then if
the SAT rises further and reaches the maximum heating
SAT limit, the fan will be indexed to the maximum speed. If
the SAT still continues to rise 5° F above the maximum limit, all heating stages will be disabled.
During Heating, the reversing valve output will be held
in the heating position (either B or O type as configured)
even after the compressor is stopped. The valve will not
switch position until the cooling mode is required.
The configuration screens contain the Max SAT parameter as well as heating lockout based on outdoor-air temperature (OAT), both can be adjusted to meet various specifications.
There is a 5-minute off time for the compressor as well
as a 5-minute time delay when staging up to allow the SAT
to achieve a stable temperature before energizing a second
stage of capacity. Likewise, a 45-second delay is used
when staging down.
After a compressor is staged off, it may be restarted
again after a normal time-guard period of 5 minutes and if
the supply air temperature has fallen below the maximum
supply air temperature limit.
The WSHP Open controller provides a status input to
monitor the compressor operation. The status is monitored
to determine if the compressor status matches the commanded state. This input is used to determine if a refrigerant
safety switch or other safety device has tripped and caused
the compressor to stop operating normally. If this should occur, an alarm will be generated to indicate the faulted compressor condition. Also, if auxiliary heat is available (see below), the auxiliary heat will operate to replace the reverse cycle heating and maintain the space temperature as required.
Auxiliary heat
Single-stage electric auxiliary heat — The control
can operate a single stage of electric heat installed on the
discharge side of the unit in order to maintain the desired
heating set point should the compressor capacity be insufficient or a compressor failure occurs. Unless a compressor
fault condition exists, the heat stage will only operate to
supplement the heat provided by the compressor if the
space temperature falls more than one degree below the
desired heating set point. The heat stage will be controlled
so the SAT will not exceed the Maximum Heating SAT limit and subject to a two-minute minimum OFF time to prevent excessive cycling. Should the compressor(s) fail to operate and heating is required, the auxiliary heat will operate
as required to maintain the space temperature set point.
Indoor air quality (IAQ) and demand controlled ventilation (DCV)
If the optional indoor air quality sensor is installed or the
network input point “System Space AQ” is utilized, the
WSHP Open controller can maintain indoor air quality,
with a field-installed modulating OA damper providing demand controlled ventilation. The control operates the modulating OA damper during occupied periods. The control
monitors the CO2 level and compares it to the configured
set points and adjusts the ventilation rate as required. The
control provides proportional ventilation to meet the requirements of ASHRAE specifications by providing a base
ventilation rate and then increasing the rate as the CO2 level increases. The control will begin to proportionally increase ventilation when the CO2 level rises above the start
ventilation set point and will reach the full ventilation rate
when the CO2 level is at or above the maximum set point.
A user configurable minimum damper position ensures
that proper base ventilation is delivered when occupants
are not present. The IAQ configurations can be accessed
through the configuration screen. The following conditions
must be true in order for this algorithm to run:
• Damper control is configured for DCV.
• The Fire/Smoke Input and Shutdown modes are inactive.
• Fan Status is true (if option is enabled).
• The unit is in an occupied mode.
• IAQ sensor reading is greater than the DCV Start Control set point.
The control has four user adjustable set points: DCV
start control set point, DCV Maximum Control set point,
Minimum damper position and the DCV Maximum damper position.
NOTE: In order for the damper to maintain proper base
ventilation, the fan must be configured to operate in either
the Continuous or Always On mode.
Two-position OA damper — The control can be configured to operate as a ventilation damper in a 2-position ventilation mode to provide the minimum ventilation requirements during occupied periods. This control operation still
utilizes the modulating damper actuator.
39
Controls — WSHP Open sequence of operation (cont)
Dehumidification with hot gas reheat (HGR)
The WSHP Open controller will provide occupied and unoccupied dehumidification only on units that are equipped
with the factory-installed HGR option. This function requires an accessory space relative humidity sensor. When
using a relative humidity sensor to control dehumidification
during occupied or unoccupied times, the dehumidification
set points are used accordingly. Additionally, the network
input point “System Space RH” may also be used in place
of the hard wired RH (relative humidity) sensor. When the
indoor relative humidity becomes greater then the dehumidification set point a dehumidification demand will be acknowledged. As long as heating or cooling is not currently
active, dehumidification will be energized, bringing on the
supply fan (medium speed), mechanical cooling, and the
integral refrigerant hot gas reheat coil. The controls will engage cooling mode, start the compressor if not already operating, and waste heat from the compressor cooling cycle
will be diverted to the reheat coil. The reversing valve will
be positioned to operate the compressor in the cooling
mode. If a call for sensible cooling takes place during hot
gas reheat operation, the hot gas reheat is de-energized
and the reheat operation is turned off. Once the call for
cooling has been satisfied and if there is still a need for dehumidification, the unit will continue to operate in a dehumidification mode with the compressor providing cooling
and the refrigerant reheat energized.
Demand limit
The WSHP Open controller has the ability to accept three
levels of demand limit from the BACnet network. In response to a demand limit, the unit will decrease its heating
set point and increase its cooling set point to widen the
range in order to immediately lower the electrical demand.
The amount of temperature adjustment in response is user
adjustable for both heating and cooling and for each demand level. The response to a particular demand level may
also be set to zero.
Power failure restart delay
The control provides a user configurable delay when recovering from a power failure or SHUTDOWN mode or when
transitioning from unoccupied to occupied mode in order
to prevent excessive demand when many units start simultaneously. Each unit can be user configured for a unique
delay between 5 and 600 seconds. The factory programmed default delay is 180 seconds.
Fire/smoke detector alarm
The control monitors the voltage input to J1-9 to detect if
a smoke detector or fire detector Normally Closed contact
has opened, indicating an alarm condition. The control will
verify the presence of 24 vac on this input. If the input
should open at any time, an alarm will be generated after 3
seconds and the equipment (fan, compressor, auxiliary
heat and damper) will immediately return to an OFF or
closed state.
Space temperature alarms
The control provides the ability to generate an alarm whenever the space temperature exceeds the alarm set point. A
separate occupied hysteresis and fixed unoccupied high and
40
low alarm set points are provided. The control provides a 5minute alarm delay during unoccupied periods. During occupied periods, the control uses the occupied temperature set
points and applies the hysteresis value to determine the
alarm set points. Whenever an occupancy transition from
unoccupied to occupied occurs or the occupied temperature
set points are changed causing an alarm condition to occur,
the control will automatically calculate an alarm delay (equivalent to the configured delay time in minutes per degree F
times the temperature error that occurred plus 15 minutes).
This will prevent nuisance alarms whenever an occupancy
change occurs and allows time for the unit to correct an
alarming temperature condition.
Condenser water temperature alarm
The control has 4 configurable alarm limits for condenser
water temperature. The control will verify that the water
temperature is within operating range (between high and
low limits) for the specific operating mode (heating or cooling) before energizing the compressor. Once the compressor is started, the condenser water temperature is further
monitored to verify that it is within limits to ensure sufficient
water is flowing through the coil. Should the leaving water
temperature rise above or fall below the appropriate limits,
and alarm is generated and the compressor will be shut
down if the condition occurs for more than 15 seconds.
Supply air temperature alarm
The control has 2 configurable alarm limits for supply air
temperature. The control will verify that the supply air temperature is within operating range (between high and low
limits) whenever the compressor or auxiliary heat is operating. Should the air temperature rise above or fall below the
appropriate limit, an alarm is generated if the condition occurs for more than 1 minute.
High condensate/overflow alarm
The control will monitor a discrete input to determine the
state of a condensate level switch. The input can be configured to alarm on either an open or closed switch condition.
Should this input be in an alarm state, the control will start
a timer and after the timer exceeds a configurable Condensate Overflow Alarm Delay limit (10-second default), the
control will generate an alarm and the unit will disable the
compressor and fan outputs.
Fan status alarm (optional)
The control generates a fan status alarm should the fan status input detect the fan is OFF after any fan speed output
has been enabled. A 30-second alarm delay is used to allow the fan sufficient time to start operating before an
alarm condition is detected. The control monitors the fan
output and if the fan is operating at any speed, the fan status must detect the fan is operating.
Compressor status alarm
The control generates a compressor failure alarm should
the compressor status input detect the compressor is OFF
after the compressor output has been energized. A 6-minute alarm delay is used to allow the compressor to start
(prevents alarms due to time guard operation) before an
alarm condition is detected. The control monitors the
compressor output and if the compressor output is energized, the compressor status input must detect the compressor operation.
This will prevent nuisance alarms whenever an occupancy change occurs and allows time for the unit to correct
an alarming humidity condition.
Filter status alarm
Condenser water linkage failure alarm (if condenser water linkage was active)
The control provides the ability to generate a dirty filter
alarm after the number of fan run hours exceeds a configurable filter alarm timer limit. The control monitors the fan
output and if the fan is operating at any speed, it accumulates run time. Should the fan run time hours exceed the
configurable limit, an alarm is generated. To reset the
alarm timer after the alarm has been generated, a Reset
Filter Alarm input is provided. The filter alarm can be disabled by setting the Filter Alarm Timer Delay to zero (factory default).
Indoor air quality alarm
The control provides the ability to generate a high CO2 level alarm during occupied periods whenever the CO2 sensor
value exceeds the user adjustable limit. Whenever an occupancy transition from unoccupied to occupied occurs, or
the occupied alarm limit is changed to a value that causes
an alarm condition to occur, the control will automatically
calculate an alarm delay:
the configured delay time in minutes
ppm times the error that occurred
+ 15 minutes
This prevents nuisance alarms from occurring when occupancy changes or the set point is changed. The IAQ
alarm can be disabled by setting Occupied High IAQ Alarm
Limit to zero.
Relative humidity alarm
The control provides the ability to generate an alarm
whenever the space relative humidity exceeds the alarm set
point. Separate occupied and unoccupied high humidity
alarm set points are provided. The control provides a 5minute alarm delay during unoccupied periods. During occupied periods, the controller uses the occupied high RH
alarm limit. Whenever an occupancy transition from unoccupied to occupied occurs, or the occupied high alarm limit
is lowered causing an alarm condition to occur, the control
will automatically calculate an alarm delay:
the configured delay time in minutes
% RH times the humidity error
condition that occurred
+ 15 minutes
The control generates a condenser water linkage failure
alarm should linkage fail after once being active. The linkage status is monitored and should it fail to be updated
from the Loop Controller, then a Condenser Water Linkage alarm is generated. A 6-minute alarm delay is provided
to prevent false alarm from occurring.
NOTE: This alarm can only be reset by re-establishing linkage and correcting the condition that caused the linkage
failure to occur or by setting the SHUTDOWN point to Active momentarily.
Airside linkage failure alarm (if airside linkage
was active)
The control generates an airside linkage failure alarm
should linkage fail after once being active. The linkage status is monitored and should it fail to be updated from the
Master Zone Controller, then an Airside Linkage alarm is
generated. A 6-minute alarm delay is provided to prevent
false alarm from occurring.
NOTE: This alarm can only be reset by re-establishing linkage and correcting the condition that caused the linkage
failure to occur or by setting the SHUTDOWN point to Active momentarily.
OAT sensor alarm (if network OA temperature
was active)
The control generates an OAT sensor failure alarm should
the value of OAT fail to be updated through the Network
after once being active. The update status is monitored and
should it fail to be updated, then an OAT sensor alarm is
generated. An alarm delay (approximately 1 hour) is provided to prevent false alarm from occurring while minimizing the required update rate for OAT.
NOTE: This alarm can be reset by setting the SHUTDOWN point to Active momentarily.
ZS sensor alarm (if ZS sensor was active)
The control generates a ZS sensor failure alarm should the
ZS sensor fail to communicate with the control. The update status is monitored and should it fail to be updated,
then the alarm is generated.
41
Guide specifications
Two-Stage Water Source Heat Pumps with
Puron® Refrigerant (R-410A)
HVAC Guide Specifications
Size Range: 18,500 to 78,700 Btuh
Cooling Capacity
14,400 to 84,000 Btuh
Heating Capacity
Carrier Model Number: 50PTH, 50PTV
Part 1 — General
1.01 SYSTEM DESCRIPTION
A. Single-package horizontally and vertically mounted
water source heat pump with Puron refrigerant
(R-410A) and electronic controls.
B. Equipment shall be completely assembled, piped
and internally wired. Capacities and characteristics
as listed in the schedule and the guide specifications
that follow.
1.02 QUALITY ASSURANCE
A. All equipment shall be rated and certified in accordance with ANSI/AHRI/ASHRAE/ISO (American
National Standard Institute/Air-Conditioning, Heating and Refrigeration Institute/American Society of
Heating, Refrigerating, and Air-Conditioning Engineers/International Organization for Standardization) 13256-1, latest edition, and ETL listed to UL
(Underwriters Laboratories) standard 1995. The
units shall have AHRI/ISO and ETL labels.
B. All units shall be factory tested in all operating modes
and safety switch operation shall be verified. Quality
control system shall automatically perform via computer: triple leak check, pressure tests, evacuate and
accurately charge system, perform detailed heating
and cooling mode tests, and quality cross check all
operational and test conditions to pass/fail data base.
NOTE: If unit fails on any cross check, system shall
not allow unit to ship.
C. Serial numbers will be recorded by factory and furnished to contractor on report card for ease of unit
warranty status. Units shall be prewired and precharged in factory.
Part 2 — Product
2.01 EQUIPMENT
A. General:
Units shall be designed to operate throughout the
range of entering fluid temperature of 40 to 120 F
in the cooling mode and 20 to 90 F in the heating
mode. Equivalent units from other manufacturers
can be proposed provided approval to bid is given
10 days prior to bid closing.
B. Basic Construction:
1. Units shall have the airflow arrangement as
shown on the plans. If units with these arrangements are not used, the contractor supplying
the water source heat pumps is responsible for
any extra costs incurred by other trades and
42
2.
3.
4.
5.
6.
7.
8.
must submit detailed mechanical drawings
showing ductwork requirements and changes or
relocation of any other mechanical or electrical
system. If other arrangements make servicing
difficult the contractor must provide access panels and clear routes to ease service. The
architect must approve all changes 10 days
prior to bid.
All units shall have stainless steel drain pans to
comply with this project’s IAQ (indoor air quality) requirements. No exceptions shall be
allowed.
All water source heat pumps shall be fabricated
from heavy gage G-90 galvanized posts and
panels. All interior surfaces shall be lined with
1/ in. thick, 1.5 lb/cu ft dual-density insulation
2
for thermal insulation and acoustic attenuation. Insulation must be non-combustible, nonhydroscopic and anti-fungal. Insulation must
meet NFPA (National Fire Protection Association) 90A and 90B for fire protection as well as
Fire Hazard classification 25/50 (per ASTM
[American Society for Testing and Materials]
E84 and UL 723 and CAN/ULC S102-M88),
ASTM C1071, erosion requirements of UL181
and be certified to meet GREENGUARD indoor
air quality standards for low emitting products.
One blower access panel and two compressor
compartment access panels shall be removable
with supply and return air ductwork in place.
Unit shall have a floating basepan consisting of
a 1/2 in. thick high density rubber pad between
the compressor base plate and the unit basepan
to prevent transmission of vibration to the
structure.
All units shall have a factory-installed four-sided
filter rack capable of accepting either one or
two-inch filters. Units shall have a 1-in. thick
throwaway type fiberglass filter as standard.
The filter rack shall incorporate a 1-in. duct
flange. The contractor shall purchase one spare
set of filters and replace factory-shipped filters
upon completion of start-up.
Cabinets shall have separate holes and knockouts for entrance of line voltage and low voltage
control wiring. Supply and return water connections shall be brass FPT fittings and shall be
securely mounted flush to the cabinet allowing
for connection to a flexible hose without the use
of a back-up wrench. Water connections which
protrude through the cabinet shall not be
allowed.
Hanging brackets shall be provided as standard
for horizontal units.
All units shall have condensate overflow switch,
air-coil and water-coil Freeze sensor as standard.
C. Access Panels:
All units (horizontal and vertical) must have a minimum of three access panels for serviceability of
compressor compartment. Units having only one
access panel to compressor, heat exchangers,
expansion device, or refrigerant piping shall not be
acceptable.
D. Unit Removal:
Contractor must ensure that units can be easily
removed for servicing and coordinate locations of
electrical conduit and lights with the electrical
contractor.
E. Compressor:
1. Two-stage hermetic compressor specifically
designed for heat pump operation and shall be
internally protected with thermal overload protection and mounted on rubber vibration isolators.
2. The compressor shall have a dual level vibration
isolation system.
3. Compressor shall be located in an insulated
compartment away from airstream to minimize
sound transmission.
F. Fan and Motor Assembly:
1. Units shall have a direct-drive centrifugal fan. A
constant torque electronically commutated
motor shall be used for premium efficiency.
These motors shall feature 5 pre-programmed
torque settings that can be changed in the field
to match design requirements. 460 v, 3 ph,
60 Hz units with these motors must be able to
operate without the need for a neutral wire for
the motor.
2. The fan motor shall be isolated from the housing by torsionally flexible isolation.
3. The fan and motor assembly must be capable of
overcoming the external static pressures as
shown on the schedule. External static pressure
rating of the unit shall be based on a wet coil.
Ratings based on a dry coil shall NOT be
acceptable.
4. All units shall have removable blower inlet ring
as standard for ease of service and maintenance.
5. Optional pre-programmed high efficiency constant airflow ECM (electronically commutated
motor) fan motor.
G. Refrigerant Circuit:
1. Units shall use R-410A refrigerant. All units
shall have a factory sealed and fully charged
refrigerant circuit with the following components:
2. Bi-directional refrigerant metering thermal
expansion valves. Finned tube refrigerant-to-air
heat exchanger not exceeding 14 fins per inch.
Refrigerant-to-air heat exchangers shall utilize
enhanced aluminum fins and rifled copper tube
construction rated to withstand 600 psig refrigerant working pressure. All air coils shall have
non-ferrous aluminum end plates.
3. Optional coated coils to have copper tubes with
tin coating and aluminum fins coated to pass
1000 hour ASTM B117 salt fog testing.
4. Reversing valve. Reversing valves shall be fourway solenoid activated refrigerant valves which
shall fail to the heating operation should the
solenoid fail to function. Reversing valves which
fail to the cooling operation shall not be
allowed.
5. Coaxial (tube in tube) refrigerant-to-water heat
exchanger. Refrigerant-to-water heat exchangers shall be insulated and with copper inner
water tube and steel outer refrigerant tube
design rated to withstand 600 psig working
refrigerant pressure and 400 psig working
water pressure. Shell and tube style refrigerantto-water heat exchangers shall be treated as
pressure vessels and shall require refrigerant
pressure relief valves piped to the exterior of
the building. The contractor supplying the
water source heat pumps with shell and tube
heat exchangers shall be responsible for any
additional installation costs. Brazed plate waterto-refrigerant heat exchangers shall require
additional centrifugal separators added to the
supply water piping at each unit. Each separator shall have an automated clean out valve
piped to a waste line. The contractor supplying
water source heat pumps with brazed plate heat
exchangers shall be responsible for any additional costs.
6. Optional cupronickel water coil to have the
refrigerant to water heat exchanger made of a
cupronickel inner water tube construction.
7. Safety controls including both a high pressure
and low pressure switch. Temperature sensors
shall not replace these safety switches.
8. Access fittings shall be factory installed on high
and low pressure refrigerant lines to facilitate
field service.
9. Activation of any safety device shall prevent
compressor operation via a lockout circuit. The
lockout circuit shall be reset at the thermostat
or at the contractor supplied disconnect switch.
Units which may be reset at the disconnect
switch only shall not be acceptable.
H. Controls and Safeties:
1. Electrical:
A control box shall be located within the unit
and shall contain a transformer, controls for the
compressor, reversing valve and fan motor
operation and shall have a terminal block for
low voltage field wiring connections. The transformer shall be rated for a minimum 75 va. All
units shall be nameplated for use with time
delay
fuses
or
HACR
(Heating,
43
Guide specifications (cont)
Air-Conditioning, and Refrigeration) circuit
breakers. Unit controls shall be 24 volts.
2. Solid-State Safety Circuit:
All units shall have a solid-state safety control
circuit with the following features:
a. Anti-short cycle time delay on compressor
operation.
b. Random start on power up mode.
c. Brown out/surge/power interruption protection.
d. Low pressure switch 120-second bypass
timer.
e. Shutdown on the following fault indications:
1) High or low refrigerant pressure safety
switches inputs.
2) Freeze sensors shall monitor refrigerant
temperature to the water coil in the
heating mode and refrigerant coil in the
cooling mode.
3) Condensate sensor input.
f. Alarm output which closes for selectable dry
contact closure or 24 vac remote fault indication.
g. Alarm output selectable for constant output
for general alarm notification, or pulse output
for annunciation of the specific fault alarm.
h. Selectable reset of unit at thermostat or disconnect.
i. Automatic intelligent reset. Unit shall automatically reset after a safety shutdown and
restart after the anti-short cycle timer and random start timer expire. Should a fault reoccur within 60 minutes after reset, then a
permanent lockout will occur. Reset attempts
shall be selectable for either 2 or 4 tries. A
condensate overflow will place the unit in an
immediate hard lockout.
j. Ability to defeat time delays for servicing.
k. A light-emitting diode (LED) to indicate safety
alarms. The LED shall annunciate the following alarms:
1) High refrigerant pressure,
2) Low refrigerant pressure,
3) Low refrigerant temperature to the
water coil in the heating operation,
4) High level of condensate in the drain
pan,
5) Brown out/surge/power interruption.
l. The LED will display each fault condition as
soon as the fault occurs. If a permanent lockout occurs, then the fault LED will display the
type of fault until the unit is reset.
m. UL listed, UL Canada listed, and RFI (radio
frequency interference), ESD (electrostatic
discharge), and transient protected.
44
n. Freeze Protection: A freeze stat shall sense
the entering refrigerant temperature to the
coaxial coil (in the heating mode) and shall
activate the compressor lockout circuit when
the refrigerant temperature drops below
either 15 F or 30 F. The factory default is
30 F and the temperature setting may be set
at 15 F by cutting the resistor (R42) located
above the dip switch. The freeze stat may not
provide protection in case of loss of flow in
the heating mode. A flow switch or pressure
differential switch is recommended to prevent
unit operation in case of loss of flow. A second freeze sensor shall be mounted at the
refrigerant inlet to the air coil. Should the
refrigerant temperature drop below 30 F the
unit will go into a soft lockout.
3. Deluxe D Controls:
Optional electronic Deluxe D control shall have
all the features of the Complete C control with
the following additional features:
a. 75 va transformer.
b. Energy Management Switch to enable
remote operation of WSHP.
c. Boilerless system control can switch automatically to electric heat at low loop water
temperature.
d. Phase loss and reversal protection shall be
provided on the unit to protect the compressor from operating in reverse rotation.
e. Auxiliary pump relay to enable a pump operation when calling for compressor operation.
4. WSHP Open Multiple Protocol Controls:
a. Units shall have all the features above (Complete C Board) and the state of the art WSHP
Open multiple protocol interface board. All
point objects will have the ability to be viewed
in the Equipment Touch™, System Touch™
or field assistant user interface. The following
points must be available at a central or
remote computer location:
1) Space temperature
2) Leaving water temperature
3) Discharge air temperature
4) Command of space temperature set
point
5) Cooling status
6) Heating status
7) Low temperature sensor alarm
8) High pressure switch alarm
9) Fan on/off position of space thermostat
10) Unoccupied/occupied command
11) Cooling demand
12) Heating demand
13) Fan “ON/AUTO” command
14) Fault prevention with auto reset
15) Itemized fault code viewed with Equipment Touch interface
b. Additional WSHP Open multiple protocol
control features shall include:
1) Three-speed fan control. Controller shall
automatically, based upon space temperature input, operate the fan at the
lowest of 3 selectable speeds to achieve
space temperature set point.
2) Two-position OA (outdoor air) damper
3) Modulating OA damper with DCV
(demand controlled ventilation)
4) Hot gas reheat solenoid valve
5) Two-position water economizer control
6) Modulating water economizer control
7) Single stage electric auxiliary heat
8) Power fail restart delay
9) Two-stage compression control
5. Multiple-protocol WSHP Open controller
remote ZS sensors for DDC control options.
Only Carrier ZS sensors can be used with the
WSHP Open controller. Sensors are available
as follows, and all sensors below offer monitoring of space temperature only, or space temperature and CO2, or space temperature and
humidity, or space temperature and CO2 and
humidity.
a. ZS Standard sensor with a communication
port.
b. ZS Plus sensor with communication port,
occupancy status indicator, local occupancy
override and setpoint adjustment.
c. ZS Pro sensor with communication port,
occupancy status indicator, local occupancy
override, setpoint adjustment, LCD display,
alarm indicator and fan speed control.
d. ZS Pro-F sensor with communication port,
occupancy status indicator, local occupancy
override, setpoint adjustment, LCD display,
alarm indicator, fan speed control, cooling/
heating/fan only mode control and F to C
conversion.
I. Piping:
1. Supply and return water connections shall be
copper FPT fittings and shall be securely
mounted flush to the cabinet corner post allowing for connection to a flexible hose without the
use of a back-up wrench.
2. All water connections and electrical knockouts
must be in the compressor compartment corner
post so as to not interfere with the serviceability
of unit. Contractor shall be responsible for any
extra costs involved in the installation of units
that do not have this feature.
J. Factory-Installed Options:
1. Mute package to include compressor blanket.
2. Hot gas reheat to be installed and controlled by
a humidistat connected to the H terminal and
shall start the unit in the reheat mode should
the humidity be above set point once the
thermostat control is satisfied. Sensible cooling
or heating requirements shall take precedence
over hot gas reheat.
3. A non-fused factory-mounted disconnect shall
be installed on the unit.
4. A two-way solenoid water valve shall be factory
mounted in the interior of the unit. The valve
shall cycle open whenever there is a call for
compressor operation and the valve shall be
equipped with an end switch.
5. An internal secondary pump shall be installed in
the unit, 208/230 volts only.
6. Factory-installed UL listed electric heater packages shall be available for the units. Available
only on vertical units with top discharge and
horizontal units with end blow configuration.
7. Closed cell foam (CCF) shall be installed on
interior surfaces of water source heat pump and
shall meet the density and compression requirements of ASTM D 1056, the water absorption
requirements of ASTM D-1667 and the tensile
and elongation requirements of ASTM D-412.
Closed cell foam shall meet the flammability
requirements of FMVSS302 and UL 94.
K. Accessories:
1. Hose Kits and Valves:
All units shall be connected to main water supply and return headers with hoses. The hoses
shall be 2 ft long, braided stainless steel rated to
400 psig at 265 F. Hoses may contain optional
ball valves with P/T (pressure/temperature)
ports, Y strainers with blow down valves and/or
autoflow regulators as specified in the schedule.
2. Electric Duct Heaters:
a. Duct heater shall be slip-in type and shall be
UL approved for zero clearance to combustible surfaces. The heater shall bear a UL/
CSA (Canadian Standards Association) label.
Control panel and element housing shall be
constructed of heavy gage galvanized steel.
All heating elements shall be made of nickel/
chromium resistance wire with ends terminated by means of staking and heliarc welding
to machine screws. Heating element support
structure shall consist of galvanized steel wire
formed and constructed to support ceramic
bushings through which the heating element
passes. Control cabinet shall be constructed
of heavy gage galvanized steel with multiple
knockouts for field wiring. Control cabinet
shall have a solid cover also of heavy gage
galvanized steel and held in place with hinges
and tool-release latches.
b. Duct heater shall be supplied with primary
over temperature protection by built in disc
type automatic reset thermal cutouts and secondary over temperature protection by built
in disc type manually resettable thermal
45
Guide specifications (cont)
cutouts. These devices must function independently of one another and are not acceptable if series connected in the control circuit
wiring. A disconnecting magnetic control circuit is required. All duct heaters will require
either a fan interlock circuit or an airflow
switch.
c. Over-current protection by means of factoryinstalled fusing within the control cabinet shall
be provided for heaters rated at more than 48
amps. Heating elements shall be subdivided
and fused accordingly.
d. All wiring, component sizing, component
spacing and protective devices within the
46
control cabinet shall be factory installed and
comply with NEC (National Electrical Code)
and UL standards. All heaters shall function
properly with a 60 Hz power supply.
e. A wiring diagram depicting layout and connections of electrical components within the
control cabinet shall be affixed to the inside of
the control cabinet cover.
f. A rating plate label shall be affixed to the
exterior of the control cabinet cover which
states model number, serial number, volts,
amps, phase, frequency, control volts, voltamps and minimum airflow requirements.
Carrier Corporation • Syracuse, New York 13221
1-15
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Pg 48
Catalog No. 04-52500108-01
Printed in U.S.A.
Form 50PT-10PD
Replaces: 50PT-1APD