SINGLE-PACKAGE
ELECTRIC COOLING UNITS with
Puron® (R-410A) Refrigerant
Model 702B
Sizes 024-060
2 To 5 Nominal Tons
Easy Installation—Factory-assembled package is a compact,
fully self-contained, electric cooling unit that is pre-wired, prepiped, and pre-charged for minimum installation expense. 702B
units are available in a variety of standard cooling sizes with
voltage options to meet residential and light commercial
requirements. Units are light weight, and install easily on a
rooftop or at ground-level. The hightech, composite base pan
eliminates rust problems associated with ground level
applications.
DURABLE, DEPENDABLE COMPONENTS
Scroll Compressors are designed for high efficiency. Each
compressor is hermetically sealed against contamination to help
promote longer life and dependable operation. Vibration isolation
provides quiet operation. Compressors have internal highpressure and overcurrent protection.
CONVERTIBLE DUCT CONFIGURATION —Unit is designed
for easy use in either downflow or horizontal applications. Each
unit is easily converted from horizontal to downflow.
UNIT 702B
Single-Package Products with
Energy-Saving Features and Puron® refrigerant.
• Low Sound Levels
• 12 SEER
• Variable Speed Blower Option
FEATURES/BENEFITS
One-piece cooling unit with optional electric heater, low
installation cost, dependable performance and easy
maintenance.
EFFICIENT OPERATION
High-efficiency design with a SEER (Seasonal Energy
Efficiency Ratio) of 12.0.
Puron® Environmentally Sound Refrigerant is Bryant’s unique
refrigerant designed to help protect the environment. Puron is an
HFC refrigerant which does not contain chlorine that can harm
the ozone layer. The most important advantage of Puron
refrigerant is that it has not been banned in future air
conditioning systems as the traditional refrigerant R-22 has
been. Puron refrigerant is in service in thousands of systems
proving highly reliable, environmentally sound performance.
Perfect Heat, Perfect Humidity™ featuring Variable Speed
Blower motors provides better comfort and energy efficiency.
You can expect up to 30 times better dehumidification; a SEER
boost of up to 12.7; economical constant fan for less than $30 a
year, which provides improved indoor air quality and more even
temperatures from room to room; and reduced indoor noise due
to lower air velocity. In addition, you’ll realize improved installation
flexibility with 3 different airflow choices for best overall comfort.
Copyright 2001 Bryant Corporation
Direct-drive multi-speed, PSC (permanent split capacitor)
blower motor is standard on all 702B models.
Direct-drive, PSC condenser-fan motors are designed to help
reduce energy consumption and provide for cooling operation
down to 40°F outdoor temperature. Motormaster® II low ambient
kit is available as a field-installed accessory.
Corporate thermostats include the Time Guard® II anti-short
cycle protection circuitry. If a non-Corporate thermostat without antishort cycle protection, is used the Time Guard II field installed antishort cycle kit is recommended.
Refrigerant system is designed to provide dependability. Liquid
refrigerant filter driers are used to promote clean, unrestricted
operation. Each unit leaves the factory with a full Puron® refrigerant
charge. Refrigerant service connections are standard on the
suction and discharge lines for checking operating pressures.
Evaporator and condenser coils are computer-designed for
optimum heat transfer and cooling efficiency. The evaporator coil
is fabricated from copper tube and aluminum fins and is located
inside the unit for protection against damage. The condenser coil
is internally mounted on the top tier of the unit. Copper fin coils
and pre-coated fin coils are available from the factory by special
order. These coils are recommended in applications where
aluminum fins are likely to be damaged due to corrosion. They are
ideal for seacoast applications.
High and Low Pressure Switches give added safety and reliability
to the compressor.
Low sound ratings ensure a quiet indoor and outdoor
environment with sound ratings as low as 72 dB.
(See page 3.)
Form No. PDS 702B.24.2
Easy to service cabinets provide easy single-panel accessibility
to serviceable components during maintenance and installation.
The basepan with integrated drain pan provides easy ground level
installation with or without a mounting pad. Convenient handholds
are provided to manipulate the unit on the jobsite. A nesting feature
ensures a positive basepan to roof curb seal when the unit is roof
mounted. A convenient 3/4-in. wide perimeter flange makes frame
mounting on a rooftop easy.
Louvered Grille provides hail and vandalism protection for the
coil.
Downflow operation is easily provided in the field to allow vertical
ductwork connections. The basepan utilizes knockout style seals
on the bottom openings to ensure a positive seal in the horizontal
airflow mode.
Cabinets are constructed of heavy-duty, phosphated, zinc-coated
prepainted steel capable of withstanding 500 hours of salt spray.
Interior surfaces of the evaporator and electric heater
compartments are insulated with cleanable semi-rigid insulation
board, which keeps the conditioned air from being affected by the
outdoor ambient temperature and provides improved indoor air
quality. (Conforms to American Society of Heating, Refrigeration
and Air Conditioning Engineers No. 62P.) The sloped drain pan
minimizes standing water in the drain, which is provided with an
external drain.
TABLE OF CONTENTS
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2
Model Number Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . 3
ARI Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,6
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,8
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-16
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-20
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . 21-24
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26, 27
Standard metal duct covers with insulation come with the unit
and cover the horizontal duct openings. These can be left in place
if the unit is converted to downflow.
—2—
Model number nomenclature
702B
N
X
024
000
VS
Options
BT – AL evap, vinyl condens
CC – AL evap, CU condens
Options
CU –
CU evap
(None)
– Wire
Grille & condens
AD – Louvered Grille
– Grille
Variable
(VS) Unit
BT VS
– Wire
andspeed
Vinyl-Coated
Condenser
VTCoil
– Fin
VS, AL evap, vinyl condens
– VS, AL
evap,
condens ConXT VC
– Louvered
Grille
andCU
Vinyl-Coated
VU
– VS,
CUFin
evap & condens
denser
Coil
used
if ordering
an option
CC Only
– Wire
Grille,
AL Evaporator
and CU/CU
Condenser Coil
AC – Louvered Grille, AL Evaporator and CU/
CU con
Model Number
702B – Single
Packaged Electric
Cooling
TT
Electrical Supply
N – *208/230-1-60
P – 208/230-3-60
E – 460-3-60
AL — Aluminum
CU — Copper
Nominal Cooling Capacity
024 – 2 ton
030 – 2.5 ton
036 – 3 ton
042 – 3.5 ton
048 – 4 ton
060 – 5 ton
*Variable speed units are only available
in 208/230-1-60 (N)
ARI* capacities
COOLING CAPACITIES AND EFFICIENCIES
UNIT
702B
NOMINAL
TONS
STANDARD
CFM
NET COOLING
CAPACITIES
(Btuh)
SEER†
SOUND
RATINGS‡
(dB)
024
030
036
042
048
060
2
2-1/2
3
3-1/2
4
5
800
1000
1200
1400
1600
1750
24,000
29,000
35,000
41,000
48,000
59,000
12.0
12.0
12.0
12.0
12.0
12.0
72
72
72
73
78
76
LEGEND
dB
— Sound Levels (decibels)
db
— Dry Bulb
SEER — Seasonal Energy Efficiency Ratio
wb
— Wet Bulb
* Air Conditioning & Refrigeration Institute.
† Rated in accordance with U.S. Government DOE Department of
Energy) test procedures and/or ARI Standard 210/240-94.
‡ Tested in accordance with ARI Standard 270-95 (not listed in ARI).
NOTES:
1. Ratings are net values, reflecting the effects of circulating fan heat.
Ratings are based on:
Cooling Standard: 80°F db, 67°F wb indoor entering-air temperature and 95°F db outdoor entering-air temperature.
2. Before purchasing this appliance, read important energy cost and
efficiency information available from your retailer.
702B WITH ICM FIOP RATINGS
UNIT
702B
“A”**
CAPACITY
“A”**
EER
SEER
024
030
036
042
048
060
24,000
29,000
35,000
41,000
48,000
59,000
10.7
10.7
10.6
10.7
10.5
10.4
12.7
12.7
12.5
12.5
12.3
12.3
**“A” Capacity- 80°F indoor db/67°F indoor wb & 95°F outdoor db.
—3—
OUTDOOR SOUND: ONE-THIRD OCTAVE BAND DATA - DECIBELS
MODEL NO.
702B
Frequency (Hz)
63
024
44.8
030
48.0
036
50.0
042
49.1
048
51.4
060
53.7
125
60.4
58.2
60.4
63.9
65.2
62.6
250
58.3
59.2
61.6
65.2
69.7
65.9
500
64.8
65.8
66.9
67.9
72.7
70.6
1000
66.9
67.7
67.8
66.7
72.9
71.6
2000
64.3
64.8
64.6
63.8
69.8
68.2
4000
59.8
61.8
60.7
60.2
65.8
65.8
8000
51.8
53.6
52.8
50.7
57.9
58.3
PHYSICAL DATA
UNIT SIZE 702B
024
030
036
042
048
NOMINAL CAPACITY (ton)
2
2-1/2
3
3-1/2
4
060
5
OPERATING WEIGHT (lb)
270
291
299
321
326
399
9.0
9.5
10.0
COMPRESSORS
Quantity
Scroll
REFRIGERANT*
REFRIGERANT (R-410A) Quantity (lb.)
5.0
5.5
REFRIGERANT METERING DEVICE
6.9
Accurater® Piston
ORIFICE ID (in.)
.057
.057
.065
.070
.073
.086
1—17
9.1
1—17
12.7
2—17
9.1
2—17
12.3
2—17
12.3
2—17
16.4
2350
22
1/8 (825)
2350
22
1/8 (825)
2350
22
1/8 (825)
2350
22
1/8 (825)
3300
22
1/4 (1100)
3300
22
1/4 (1100)
3—15
3.7
3—15
3.7
3—15
3.7
3—15
4.7
4—15
4.7
4—15
4.7
800
10 x 10
1/4
1000
10 x 10
1/4
1200
10 x 10
1/2
1400
11 x 10
3/4
1600
11 x 10
3/4
1750
11 x 10
1.0
800
10 x 10
1/2
1000
10 x 10
1/2
1200
10 x 10
3/4
1400
11 x 10
3/4
1600
11 x 10
3/4
1750
11 x 10
1.0
24 x 30 x 1
24 x 30 x 1
24 x 30 x 1
OUTDOOR COIL
Rows—Fins/in.
Face Area (sq ft)
OUTDOOR FAN
Nominal Airflow (Cfm)
Diameter
Motor Hp (Rpm)
OUTDOOR COIL
Rows—Fins/in.
Face Area (sq ft)
INDOOR BLOWER STANDARD
Nominal Airflow (Cfm)
Size (in.)
Motor (Hp)
EVAPORATOR BLOWER ICM FIOP ONLY
Nominal Airflow (Cfm)
Size (in.)
Motor (Hp)
HIGH-PRESSURE SWITCH (psig)
610 ± 15
420 ± 25
Cutout
Reset (Auto.)
LOSS-OF-CHARGE/LOW-PRESSURE SWITCH
(Liquid Line) (psig)
Cutout
Reset (Auto.)
20 ± 5
45 ± 10
RETURN-AIR FILTERS (In.)*
Throwaway
20 x 20 x 1
20 x 20 x 1
20 x 24 x 1
HE
Y
MP
PU
AT
UNIT
AR
T
IFIED O ARI A
RT
S
C
CE
YING WITH
PL
OM
MANUFACTUR
ER
* Required filter sizes shown are based on the larger of the ARI (Air Conditioning & Refrigeration Institute) rated
cooling airflow or the heating airflow velocity of 300 ft/min for throwaway type or 450 ft/min for high-capacity
type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.
2
5
®
A
23
A
EQ
RI
UIP M E NT
STA
NDARD
24
0
—4—
OPTIONS AND ACCESSORIES
Factory-installed options
Coil options include copper/copper and vinyl-coated
construction for refrigerant coils. Units are shipped standard with
copper tube/aluminum fin construction. See model number
nomenclature for coil options.
Electric heaters provide heat in the unit when required. Each
package has a heater module that slides into the controls
compartment. Heater sizes range from 5.0 to 20.0 kW. The
electric heater design allows the use of a single-point power
supply for the entire unit, resulting in lower installed costs.
Electronic Variable-Speed Motor — ICM Motors (Integrated
Control Motor) provide variable-speed operation to optimize
comfort levels year round. They are also more economical to
operate than standard motors.
Flat roof curbs in both 8 in. and 14 in. sizes are available for roof
mounted applications.
Square-to-round duct transition kit enables 024-048 size
units to be fitted to 14 in. round ductwork.
Field-installed accessories
Thermostats provide control for the system heating and cooling
functions. Thermostat models are available in both programmable
and non-programmable versions.
Economizer with Solid-State Controls and Barometric
Relief Dampers
Lifting kit, including 4 metal brackets that fit into the hand-holds,
a support strap and two safety straps, is available to assist in
lifting this product onto a roof application.
Manual Air Damper (25% open)
Electric Heaters
Filter Rack
Flat Roof Curbs (8-in. and 14-in.)
Crankcase heater provides anti-floodback protection for lowload cooling applications.
Square-to-Round Duct Transition Kit
Thermostats
Low-ambient kit (Motormaster II control) allows the use of
mechanical cooling down to outdoor temperatures as low as 0°F.
Crankcase Heater
Low Ambient Kit (Motormaster® II Control)
Solid-state Time Guard II device provides short-cycling
protection for the compressor. Not required with corporate
electronic thermostats.
Solid-State Time Guard® II Device
Lifting Kit
Compressor Hard Start Kit
Economizer with solid-state controls and barometric relief
dampers includes filter racks and provide outdoor air during
cooling and reduce compressor operation.
Manual outside air damper includes hood and filter rack with
adjustable damper blade for up to 25% outdoor air.
Filter rack features easy installation, serviceability, and highfiltering performance for vertical applications.
Compressor hard start kit assists compressor start-up by
providing additional starting torque on single phase units and
prolongs compressor motor life.
ELECTRIC HEATERS
USED WITH SIZES
024
030
036
042
ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
ELECTRIC HEATERS (208/230 — 3 PHASE — 60 Hz)
X
X
X
X
X
X
X
X
X
X
X
ELECTRIC HEATERS (460 V — 3 PHASE — 60 Hz)
X
X
X
X
X
X
X
X
ODS CATALOG
ORDERING NO.
NOMINAL CAPACITY
(kW)
048
060
CPHEATER052A00
CPHEATER069A00
CPHEATER065A00
CPHEATER051A00
CPHEATER053A00
5.0
7.5
10.0
15.0
20.0
X
X
X
X
X
X
X
X
X
X
CPHEATER055A00
CPHEATER056A00
CPHEATER057A00
CPHEATER059A00
5.0
10.0
15.0
20.0
X
X
X
X
X
X
X
X
CPHEATER060A00
CPHEATER061A00
CPHEATER062A00
CPHEATER063A00
5.0
10.0
15.0
20.0
X
X
X
X
X
X
X
X
LEGEND
ODS — Order Distribution System
NOTE: Electric heaters are rated at 240 v and 480 v. Refer to Multiplication Factors table for other voltages.
MINIMUM AIRFLOW FOR RELIABLE ELECTRIC HEATER OPERATION
UNIT
AIRFLOW
024
750
030
750
036
1250
042
1205
—5—
048
1500
060
1800
ECONOMIZER
FILTER RACK
MANUAL OUTSIDE AIR DAMPER
REPLACEMENT
PANEL
MANUAL OUTSIDE
AIR HOOD
DAMPER
BLADE
7
—6—
BASE UNIT DIMENSIONS — 702B024-036
CENTER OF GRAVITY
in. [mm]
kg
UNIT HEIGHT
in. [mm]
“A”
X
Y
Z
122.5
37.02 [940.3]
18.5 [469.9]
14.5 [368.3]
16.0 [406.4]
291
132.0
39.02 [991.1]
19.5 [495.3]
15.5 [393.7]
17.6 [447.0]
299
135.6
35.02 [889.5]
19.5 [495.3]
15.3 [387.4]
16.5 [419.1]
UNIT WEIGHT
UNIT
ELECTRICAL
CHARACTERISTICS
lb
702B024
208/230-1-60
270
702B030
208/230-1-60, 208/230-3-60
702B036
208/230-1-60, 208/230-3-60, 460-3-60
702B 024-036 Dimensions
—7—
BASE UNIT DIMENSIONS – 702B042-060
ELECTRICAL
CHARACTERISTICS
lb
702B042
208/230-1-60, 208/230-3-60, 460-3-60
321
702B048
208-230-1-60, 208/230-3/60, 460-3-60
326
702B060
208/230-1-60, 208/230-3-60, 460-3-60
399
702B 042-060 Dimensions
—8—
CENTER OF GRAVITY
in. [mm]
kg
UNIT HEIGHT
in. [mm]
“A”
X
Y
Z
146
38.98 [990.2]
20.5 [520.7]
16.8 [425.5]
16.6 [421.6]
148
38.98 [990.2]
19.5 [495.3]
17.6 [447.6]
18.0 [457.2]
181
42.98 [1091.7]
20.5 [520.7]
16.2 [412.8]
17.6 [447.0]
UNIT WEIGHT
UNIT
ACCESSORY DIMENSIONS
UNIT SIZE
A
in. [mm]
ODS CATALOG NUMBER
50GL024-036
50GL042-060
B
in. [mm]
C
in. [mm]
D
in. [mm]
CPRFCURB006A00
8 [203]
11 [279]
16-1/2 [419]
28-3/4 [730]
CPRFCURB007A00
14 [356]
11 [279]
16-1/2 [419]
28-3/4 [730]
CPRFCURB008A00
8 [203]
16-3/16 [411]
17-3/8 [441]
40-1/4 [1022]
CPRFCURB009A00
14 [356]
16-3/16 [411]
17-3/8 [441]
40-1/4 [1022]
NOTES:
1. Roof curb must be set up for unit being installed.
2. Seal strip must be applied, as required, to unit being installed.
3. Dimensions in [ ] are in millimeters.
4. Roof curb is made of 16-gage steel.
5. Table lists only the dimensions, per part number, that have changed.
6. Attach ductwork to curb (flanges of duct rest on curb).
7. Insulated panels: 1-in. thick fiberglass 1 lb density.
8. Dimensions are in inches.
9. When unit mounting screw is used (see Note A), a retainer bracket must be used as well. This bracket must also be used when required by code
for hurricane or seismic conditions. This bracket is available through Micrometl.
HVAC unit
base
HVAC unit
base
Screw
(NOTE A)
Screw
(NOTE A)
Gasketing
inner flange*
*Gasketing
outer flange
Gasketing
inner flange*
*Gasketing
outer flange
Wood nailer*
Flashing field
supplied
Wood nailer*
Flashing field
supplied
Roofcurb*
Insulation (field
supplied)
Roofing material
field supplied
Roofing material
field supplied
Duct work
field supplied
Cant strip
field supplied
Roofcurb*
Insulation (field
supplied)
Cant strip
field supplied
Duct work
field supplied
Roof
Roof
*Provided with roofcurb
*Provided with roofcurb
Roof Curb for Small Cabinet
Roof Curb for Large Cabinet
Note A: When unit mounting screw is used,
retainer bracket must also be used.
Note A: When unit mounting screw is used,
retainer bracket must also be used.
Supply opening
(B x C)
B Typ.
44 5/16"
D
C Typ.
R/A
A
Gasket around
duct
Insulated
deck pan
Short
Support
Insulated
deck pan
S/A
Long
Support
Return opening
(B X C)
—9—
Gasket around
outer edge
702B Corner weights (In Pounds)
1
2
y
4
3
x
Small Base
Large Base
Model 50GL
Corner Weight #1
024
76
030
036
042
048
060
84
85
71
78
85
Corner Weight #2
49
60
60
55
56
66
Corner Weight #3
57
61
64
85
80
108
Corner Weight #4
88
86
90
110
112
140
Total Weight
270
291
299
321
326
399
SELECTION PROCEDURE (WITH EXAMPLE)
I Determine cooling and heating requirements at design
conditions:
Given:
Required Cooling Capacity (TC). . . . . . . . . . . 33,500 Btuh
Sensible Heat Capacity (SHC) . . . . . . . . . . . . 24,500 Btuh
Required Heating Capacity . . . . . . . . . . . . . . 15,000 Btuh
Condenser Entering Air Temperature . . . . . . . . . . . . 95°F
Indoor-Air Temperature . . . . . . . . . . . 80°F edb, 67°F ewb
Evaporator Air Quantity . . . . . . . . . . . . . . . . . . . .1200 cfm
External Static Pressure . . . . . . . . . . . . . . . . . . . 0.2 in. wg
Electrical Characteristics . . . . . . . . . . . . . . . . . . . 230-1-60
II Select unit based on required cooling capacity.
Enter Cooling Capacities table at condenser entering
temperature of 95°F. The 702B036 unit at 1200 cfm and
67°F ewb (entering wet bulb) will provide a total capacity of
35,000 Btuh and a SHC of 26,000 Btuh. Calculate SHC
correction, if required, using Note 4 under Cooling
Capacities tables.
III Select electric heat.
The required heating capacity is 15,000 Btuh (given).
Determine the electric heat capacity in kW.
15,000 Btuh
= 4.4 kW of heat required
3414 Btuh/kW
closely satisfies the heating required. To calculate kW at
208v, multiply the heater kW by multiplication factor 0.75
found in the Wattage Multiplication Factors table.
5 kW x 0.75 = 3.75 kW
3.75 kW x 3414 Btuh/kW = 12,802.50 Btuh
IV Determine fan speed and power requirements at design
conditions.
Before entering the air delivery tables, calculate the total
static pressure required. From the given, Filter Pressure
Drop table, and the Accessory Electric Heat Pressure Drop
table, find:
External static pressure
0.200 in. wg
Filter
0.130 in. wg
Total static pressure
0.330 in. wg
Enter the table for Wet Coil Air Delivery — (230 and 460 V.)
At 0.33 in. wg external static pressure and low speed, the
motor delivers 1228 cfm, and 440 watts.
V Select unit that corresponds to power source available.
The Electrical Data table shows that the unit is designed to
operate at 208/230-1-60.
Enter the Electric Heater Packages table for 208/240,
single-phase, 702B036 unit. The 5-kW heater at 240v most
—10—
PERFORMANCE DATA
STANDARD PSC INDOOR MOTOR
COOLING CAPACITIES
702B024 COOLING PERFORMANCE TABLE
Temp (F)
Outdoor Air
Entering
Condenser
75
85
95
105
115
125
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
Evaporator Air—CFM/BF
600/0.08
800/0.10
1000/0.12
Evaporator Air—Ewb (F)
62
67
72
62
67
72
62
67
72
23.7
19.6
1.74
22.4
18.9
1.91
21.2
18.4
2.11
19.1
17.1
2.37
16.9
15.9
2.73
14.7
14.7
3.16
26.0
16.8
1.76
25.0
16.3
1.96
23.7
15.8
2.17
21.5
14.6
2.45
19.3
13.5
2.82
16.8
12.5
3.28
28.1
13.9
1.78
27.2
13.4
1.97
26.2
13.0
2.21
23.8
12.0
2.47
21.8
11.1
2.89
19.2
10.2
3.38
24.7
22.3
1.88
23.6
21.8
2.07
22.3
21.1
2.25
20.1
19.5
2.52
18.2
18.2
2.88
16.1
16.1
3.34
26.9
18.6
1.90
25.8
18.2
2.09
24.0
17.3
2.25
22.3
16.4
2.61
20.0
15.4
3.01
17.4
14.2
3.46
28.7
14.5
1.91
27.7
14.2
2.11
26.7
13.8
2.35
24.2
12.8
2.61
22.3
11.9
3.02
19.6
11.1
3.51
25.2
24.4
2.04
24.1
24.1
2.22
23.0
23.0
2.40
21.0
21.0
2.68
19.2
19.2
3.07
16.9
16.9
3.54
26.9
19.7
2.09
25.9
19.4
2.29
24.7
19.0
2.52
22.3
17.8
2.81
20.1
16.8
3.21
17.5
15.7
3.68
28.7
14.9
2.11
27.5
14.6
2.30
26.4
14.1
2.52
24.1
13.1
2.81
22.1
12.6
3.23
19.4
11.6
3.72
702B030 COOLING PERFORMANCE TABLE
Temp (F)
Outdoor Air
Entering
Condenser
75
85
95
105
115
125
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
Evaporator Air—CFM/BF
750/0.08
1000/0.11
1250/0.15
Evaporator Air—Ewb (F)
62
67
72
62
67
72
62
67
72
29.0
25.2
2.11
27.5
24.5
2.34
25.9
23.7
2.58
23.3
22.0
2.90
21.5
21.2
3.14
19.7
19.7
3.55
32.2
21.5
2.14
30.7
20.9
2.38
29.4
20.4
2.65
26.2
18.7
3.00
24.4
17.9
3.28
22.2
16.8
3.69
34.3
17.2
2.15
33.3
16.8
2.44
31.9
16.3
2.67
29.1
15.1
3.01
26.9
14.2
3.33
24.7
13.4
3.70
30.4
29.0
2.28
28.7
28.1
2.52
27.5
27.5
2.78
24.8
24.8
3.07
23.1
23.1
3.39
21.4
21.4
3.78
32.8
23.5
2.32
31.7
23.3
2.60
29.0
21.9
2.75
27.0
21.1
3.19
24.9
20.2
3.49
22.7
19.2
3.86
34.6
18.0
2.33
33.4
17.6
2.62
32.3
17.2
2.85
29.4
16.0
3.20
27.5
15.2
3.48
24.8
14.3
3.89
31.1
31.1
2.46
29.8
29.8
2.68
28.5
28.5
2.95
25.9
25.9
3.31
24.2
24.2
3.62
22.3
22.3
4.00
32.6
24.7
2.58
31.5
24.4
2.87
29.8
24.3
3.09
27.0
22.9
3.43
24.8
22.0
3.74
22.5
21.0
4.10
34.2
18.1
2.59
33.3
18.0
2.84
31.9
17.7
3.12
29.1
16.4
3.47
26.8
15.7
3.79
24.6
14.8
4.10
See Legend and Notes on page 13.
—11—
PERFORMANCE DATA
STANDARD PSC INDOOR MOTOR
COOLING CAPACITIES
702B036 COOLING PERFORMANCE TABLE
Temp (F)
Outdoor Air
Entering
Condenser
75
85
95
105
115
125
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
Evaporator Air—CFM/BF
900/0.09
1200/0.13
1500/0.18
Evaporator Air—Ewb (F)
62
67
72
62
67
72
62
67
72
35.2
30.3
2.58
32.9
28.7
2.83
31.0
27.9
3.11
27.9
26.0
3.49
25.5
24.7
3.85
22.2
22.2
4.48
38.7
25.5
2.61
36.9
24.8
2.88
34.9
24.0
3.19
31.5
22.2
3.59
28.8
21.0
3.96
24.6
19.1
4.59
41.6
20.7
2.61
39.9
20.1
2.89
37.9
19.3
3.20
34.3
17.7
3.60
31.4
16.5
3.96
27.0
14.8
4.61
36.6
34.0
2.79
34.8
33.3
3.05
32.4
30.8
3.33
29.3
28.3
3.73
27.5
27.5
4.07
24.0
24.0
4.71
39.8
28.0
2.84
37.9
27.4
3.11
35.0
26.0
3.33
32.2
24.8
3.82
29.4
23.4
4.19
25.0
21.5
4.79
41.9
21.6
2.83
40.2
21.0
3.12
38.3
20.3
3.43
34.6
18.6
3.82
31.5
17.5
4.19
27.0
15.8
4.84
37.3
37.3
3.03
35.5
35.5
3.28
33.8
33.8
3.56
30.7
30.7
3.97
28.3
28.3
4.34
24.5
24.5
4.98
39.5
29.3
3.14
37.7
28.8
3.43
35.7
28.0
3.74
32.0
26.5
4.15
29.2
25.2
4.46
24.8
23.0
5.09
41.5
21.6
3.14
39.8
21.1
3.43
37.8
20.5
3.73
34.0
18.7
4.13
31.0
17.6
4.51
26.3
15.8
5.15
702B042 COOLING PERFORMANCE TABLE
Temp (F)
Outdoor Air
Entering
Condenser
75
85
95
105
115
125
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
Evaporator Air—CFM/BF
1050/0.10
1500/0.13
1750/0.17
Evaporator Air—Ewb (F)
62
67
72
62
67
72
62
67
72
40.9
35.2
2.93
38.8
34.2
3.26
36.5
33.1
3.60
31.9
30.3
4.26
28.6
28.6
4.92
25.3
26.6
5.62
44.6
29.5
2.97
42.7
28.7
3.31
40.7
27.8
3.70
35.8
25.3
4.42
32.0
23.6
5.10
28.4
21.8
5.84
48.1
23.4
2.99
46.3
22.8
3.35
44.2
22.0
3.73
39.4
20.0
4.46
35.6
18.6
5.18
32.0
17.1
5.97
42.3
39.8
3.20
40.4
39.0
3.53
38.1
38.1
3.87
33.9
33.9
4.50
30.8
30.8
5.06
27.8
27.8
5.66
45.8
32.4
3.27
43.8
31.7
3.62
41.0
30.4
3.94
36.8
28.5
4.75
32.9
26.9
5.47
29.1
25.1
6.24
49.1
24.6
3.30
47.1
24.0
3.66
45.0
23.3
4.03
40.0
21.3
4.78
36.0
20.0
5.49
32.1
18.5
6.26
43.1
43.1
3.48
41.5
41.5
3.76
39.8
39.8
4.15
35.5
35.5
4.91
32.2
32.2
5.63
29.0
29.0
6.41
45.9
34.4
3.70
43.9
33.8
4.04
41.6
33.0
4.43
36.5
30.7
5.17
32.7
29.1
5.84
28.9
27.2
6.57
48.8
25.1
3.72
46.9
24.5
4.07
44.7
23.9
4.45
39.8
22.1
5.21
35.5
20.6
5.94
31.3
19.0
6.73
See Legend and Notes on page 13.
—12—
PERFORMANCE DATA
STANDARD PSC INDOOR MOTOR
COOLING CAPACITIES
702B048 COOLING PERFORMANCE TABLE
Evaporator Air—CFM/BF
Temp (F)
Outdoor Air
Entering
Condenser
1200/0.06
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
75
85
95
105
115
125
1600/0.08
2000/0.11
Evaporator Air—Ewb (F)
62
67
72
62
67
72
62
67
72
47.9
41.5
3.38
45.7
40.4
3.77
43.3
39.1
4.15
39.2
36.4
4.67
35.3
34.4
5.32
32.0
32.0
6.16
52.3
34.8
3.43
50.2
34.1
3.80
47.9
33.1
4.23
43.7
30.8
4.79
39.6
29.0
5.50
35.2
27.0
6.31
56.8
28.2
3.48
54.7
27.4
3.86
52.3
26.5
4.28
47.9
24.6
4.82
43.7
23.0
5.54
38.7
21.0
6.34
49.6
47.4
3.68
47.5
46.5
4.03
45.3
45.3
4.41
41.5
41.5
4.93
38.2
38.2
5.65
34.4
34.4
6.47
53.7
38.7
3.78
51.6
37.9
4.16
48.0
36.2
4.46
44.6
34.6
5.14
40.3
32.8
5.85
35.5
30.8
6.63
58.1
29.9
3.82
56.1
29.3
4.21
53.7
28.5
4.63
48.9
26.4
5.19
44.3
24.7
5.89
39.3
22.8
6.69
50.5
50.5
4.01
48.9
48.9
4.36
47.0
47.0
4.78
42.9
42.9
5.34
39.3
39.3
6.06
35.0
35.0
6.89
54.0
41.6
4.23
51.6
40.9
4.63
48.9
39.9
5.07
44.3
37.5
5.60
40.1
35.7
6.27
35.2
33.4
7.04
57.7
30.7
4.27
56.0
30.3
4.68
53.5
29.5
5.11
48.9
27.6
5.66
44.0
26.0
6.36
38.8
24.0
7.16
702B060 COOLING PERFORMANCE TABLE
Temp (F)
Outdoor Air
Entering
Condenser
75
85
95
105
115
125
BF
Ewb
kW
SHC
TC
PSC
—
—
—
—
—
—
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
Evaporator Air—CFM/BF
1500/0.05
1750/0.06
2000/0.07
2500/0.08
Evaporator Air—Ewb (F)
62
67
72
62
67
72
62
67
72
62
67
72
57.6
50.6
4.63
54.4
49.0
5.06
51.2
47.5
5.54
45.8
44.0
6.17
41.9
41.9
6.75
38.6
38.6
7.36
64.3
43.0
4.69
60.9
41.6
5.17
57.5
40.0
5.68
51.9
37.0
6.35
47.6
35.1
6.94
43.2
33.2
7.64
69.9
34.4
4.75
67.0
33.4
5.21
63.7
32.2
5.72
57.7
29.5
6.39
53.2
27.8
6.98
48.3
25.8
7.67
59.8
55.5
4.67
56.4
53.6
5.10
53.1
51.9
5.58
47.8
47.8
6.23
44.5
44.5
6.83
41.1
41.1
7.58
66.1
46.2
4.71
63.0
45.0
5.17
59.0
43.2
5.64
53.4
40.3
6.36
49.0
38.3
6.95
44.5
36.3
7.64
71.7
36.3
4.78
68.6
35.2
5.23
65.3
34.0
5.74
59.1
31.4
6.41
54.4
29.6
6.99
49.4
27.6
7.68
61.7
59.8
4.68
58.0
58.0
5.14
55.1
55.1
5.64
50.2
50.2
6.30
46.8
46.8
6.82
43.1
43.1
7.63
67.6
49.3
4.73
64.5
48.2
5.18
60.7
46.8
5.69
54.6
43.4
6.37
50.1
41.5
6.95
45.4
39.3
7.64
73.1
38.1
4.80
69.9
37.0
5.26
66.5
35.8
5.76
60.1
33.1
6.42
55.2
31.3
7.01
50.0
29.1
7.69
65.0
65.0
4.70
62.3
62.3
5.17
59.3
59.3
5.68
53.8
53.8
6.36
50.0
50.0
6.94
46.0
46.0
7.64
69.6
54.8
4.75
66.4
54.0
5.21
62.7
52.8
5.71
56.2
49.3
6.38
51.6
47.1
6.95
46.7
44.5
7.65
75.1
41.3
4.84
71.6
40.2
5.29
68.1
39.1
5.79
61.4
36.2
6.44
56.5
34.5
7.03
51.0
32.1
7.71
LEGEND
Bypass Factor
Entering Wet-Bulb
Total Unit Power Input
Sensible Heat Capacity (1000 Btuh)
Cooling Capacity (1000 Btuh)
Permanent Split Capacitor
NOTES:
1. Ratings are net; they account for the effects
of the evaporator-fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. The following formulas may be used:
t
ldb
= t
edb
ⴚ
sensible capacity (Btuh)
1.10 x cfm
t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving
evaporator coil (h lwb )
hlwb = hewbⴚ
total capacity (Btuh)
4.5 x cfm
Where: h ewb = Enthalpy of air entering evaporator coil
4. The SHC is based on 80°F Edb (Entering dry bulb) air temperature
through Evaporator coil. Below 80°F Edb, subtract (Correction Factor x
CFM) from SHC. Above 80°F Edb, add (Correction Factor x CFM) to
SHC. Correction Factor = 1.10 x (1 + BF) x (Edb + 8)
—13—
PERFORMANCE DATA (CONT)
ECONOMIZER 1-in. FILTER PRESSURE DROP (in. wg)
UNIT 702B
PRESSURE DROP
024-036
0.20
042-060
0.25
MULTIPLICATION FACTORS
HEATER kW
RATING
VOLTAGE
DISTRIBUTION
MULTIPLICATION
FACTOR
240
200
208
230
240
.69
.75
.92
1.00
480
440
460
480
.84
.92
1.00
Example: 20 kW (at 240v) heater on 230v
= 20.0 (.92 mult factor)
= 18.4 kW capacity at 230 v
FILTER PRESSURE DROP (In. wg)
CFM
FILTER SIZE
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
20 X 20 X 1
0.05
0.07
0.08
0.10
0.12
0.13
0.14
0.15
—
—
—
—
—
—
—
—
—
—
2300
—
20 X 24 X 1
—
—
—
—
0.09
0.10
0.11
0.13
0.14
0.15
0.16
—
—
—
—
—
—
—
—
24 X 30 X 1
—
—
—
—
—
—
—
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
ELECTRIC HEAT PRESSURE DROP TABLES
Small Cabinet: 024-036
STATIC
CFM
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
5 Kw
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.02
0.04
0.06
0.07
7.5 Kw
0.00
0.00
0.00
0.00
0.00
0.00
0.02
0.03
0.05
0.07
0.08
0.09
10 Kw
0.00
0.00
0.00
0.00
0.00
0.02
0.04
0.06
0.07
0.09
0.10
0.11
15 Kw
0.00
0.00
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
Large Cabinet: 042-060
STATIC
CFM
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
5 Kw
0.00
0.00
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
7.5 Kw
0.00
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
10 Kw
0.00
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
15 Kw
0.00
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
20 Kw
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
—14—
WET COIL AIR DELIVERY — STANDARD 702B UNIT 024-060
230 AND 460 VOLT
Unit
702B
Motor
Speed
Low
024
Med
High
Low
030
Med
High
Low
036
Med
High
Low
042
Med
High
Low
048
Med
High
Low
060
Med
High
0.0
0.1
0.2
0.3
Watts
281
282
281
278
External Static Pressure (in. wg)
0.4
0.5
0.6
276
0.7
0.8
0.9
1.0
—
—
—
—
—
—
CFM
833
776
702
638
554
Watts
—
—
—
375
370
363
357
352
—
—
—
CFM
—
—
—
894
800
754
636
518
—
—
—
Watts
—
—
—
—
—
468
457
444
431
423
—
CFM
—
—
—
—
—
884
802
697
467
397
—
Watts
246
244
243
241
—
—
—
—
—
—
—
CFM
910
806
749
680
—
—
—
—
—
—
—
Watts
343
339
336
332
328
322
317
—
—
—
—
—
CFM
1148
1104
1028
958
850
782
645
—
—
—
Watts
—
—
—
—
441
432
421
410
400
—
—
CFM
—
—
—
—
1102
988
896
783
529
—
—
Watts
—
470
458
445
430
415
399
384
—
—
—
CFM
—
1350
1257
1240
1199
1107
1015
924
—
—
—
Watts
—
—
514
501
487
471
455
438
422
—
—
CFM
—
—
1338
1295
1288
1181
1111
968
813
—
—
Watts
—
—
—
646
636
626
614
602
589
—
—
—
CFM
—
—
—
1385
1268
1196
1159
1032
948
—
Watts
—
625
614
605
593
574
549
518
485
454
—
CFM
—
1540
1510
1473
1396
1348
1288
1192
1124
1037
—
Watts
—
—
—
—
726
695
661
625
591
561
540
CFM
—
—
—
—
1648
1593
1530
1446
1352
1237
1114
Watts
—
—
—
—
—
—
—
790
766
742
713
CFM
—
—
—
—
—
—
—
1616
1492
1394
1283
Watts
—
588
577
572
566
556
539
517
491
—
—
CFM
—
1514
1543
1467
1408
1374
1324
1237
1161
—
—
Watts
—
756
738
719
699
676
650
623
596
572
555
CFM
—
1785
1765
1706
1628
1577
1503
1421
1357
1298
1253
Watts
—
—
—
—
896
862
829
800
775
752
728
CFM
—
—
—
—
1880
1804
1704
1547
1565
1406
1367
Watts
903
898
873
842
814
792
777
764
743
701
618
CFM
2190
2158
2081
2026
1958
1866
1822
1744
1678
1535
1377
Watts
—
1002
978
960
941
914
880
839
798
764
750
CFM
—
2389
2291
2216
2120
2020
1952
1852
1727
1617
1549
Watts
—
—
—
1080
1080
1066
1041
1008
972
938
—
CFM
—
—
—
2316
2181
2122
2101
2000
1802
1672
—
NOTES:
1. Deduct 10% For 208v.
2. Deduct field-supplied air filter pressure drop to obtain external Static pressure available for ducting.
3. Air delivery values are without air filter.
4. Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended.
—15—
702B ICM FIOP DRY COIL AIRFLOW–SMALL CABINET
UNIT
SIZE
024
030
036
CFM ADJUST
PIN SELECT
LO PIN
NOM PIN
HI PIN
EXTERNAL STATIC
PRESSURE RANGE
0.0–0.4
0.4–0.7
0.7–1.0
0.0–0.4
0.4–0.7
0.7–1.0
0.0–0.4
0.4–0.7
0.7–1.0
COOLING
800
725
—
885
805
730
990
930
855
COOLING
DEHUMIDIFY
715
670
—
715
695
645
795
775
745
COOLING
1010
920
825
1105
1030
930
1255
1160
1050
COOLING
DEHUMIDIFY
890
845
795
890
865
825
1010
980
925
COOLING
1110
1025
970
1235
1175
1115
1400
1355
1280
COOLING
DEHUMIDIFY
990
960
910
990
975
940
1125
1110
1085
702B ICM FIOP DRY COIL AIRFLOW–LARGE CABINET
UNIT
SIZE
CFM ADJUST
PIN SELECT
LO PIN
NOM PIN
HI PIN
EXTERNAL STATIC
PRESSURE RANGE
0.1–1.0
0.1–1.0
0.1–1.0
COOLING
1100
1225
1410
042
COOLING
DEHUMIDIFY
980
980
1125
COOLING
1260
1400
1610
048
COOLING
DEHUMIDIFY
1120
1120
1290
COOLING
1575
1750
2010
060
COOLING
DEHUMIDIFY
1400
1400
1610
702B ICM FIOP WET COIL PRESSURE DROP
STANDARD CFM
UNIT
SIZE
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
024
0.005
0.007
0.010
0.012
0.015
—
—
—
—
—
—
—
—
—
—
—
030
—
0.007
0.010
0.012
0.015
0.018
0.021
0.024
—
—
—
—
—
—
—
—
036
—
—
—
0.019
0.023
0.027
0.032
0.037
0.042
0.047
—
—
—
—
—
—
042
—
—
—
—
0.014
0.017
0.020
0.024
0.027
0.031
0.035
0.039
0.043
—
—
—
048
—
—
—
—
—
—
0.027
0.032
0.036
0.041
0.046
0.052
0.057
0.063
0.068
—
060
—
—
—
—
—
—
—
—
—
0.029
0.032
0.036
0.040
0.045
0.049
0.053
—16—
TYPICAL PIPING AND WIRING
ROOF-MOUNTING
CURB
ROOF
RETURN-AIR
FLEXIBLE DUCT
SUPPLY-AIR
FLEXIBLE DUCT
CEILING
CONCENTRIC DIFFUSER BOX
(FIELD-SUPPLIED)
C00023
INDOOR
THERMOSTAT
RETURN
AIR
FROM
POWER
SOURCE
TOP COVER
DISCONNECT
PER NEC*
*NEC - NATIONAL ELECTRICAL CODE
C00063
—17—
APPLICATION DATA
Condensate trap — A 2-in. condensate trap must be field
supplied.
1” MIN.
Remove the inserts similar to removing an electrical knock-out.
Leave on duct covers to seal the horizontal discharge openings
in the unit. Units installed in horizontal discharge orientation do
not require duct covers.
Maximum cooling airflow — To minimize the possibility of
condensate blow-off from the evaporator, airflow through the
units should not exceed 450 cfm/ton.
TRAP
OUTLET
2” MIN.
Ductwork — Secure downflow discharge ductwork to roof curb.
For horizontal discharge applications, attach ductwork to unit
with flanges.
To convert a unit to downflow discharge — Units are
equipped with factory-installed inserts in the downflow openings.
—18—
Minimum cooling airflow — The minimum cooling airflow is
350 cfm/ton.
Minimum cooling ambient operating temperature — All
standard units have a minimum ambient operating temperature of
40°F. Units with the ICM Indoor Motor FIOP have a minimum
cooling outdoor operating temperature of 55°F. With accessory
low ambient temperature kit, units can operate at temperatures
down to 0°F.
Maximum operating outdoor air temperature — Maximum
outdoor operating air temperature for cooling is 125°F.
ELECTRICAL DATA
UNIT
SIZE
702B
024
V-PH-Hz
VOLTAGE
RANGE
Min
Max
COMPRESSOR
RLA
LRA
OUTDOOR
INDOOR
FAN MOTOR FAN MOTOR
FLA
FLA
208/230-1-60
187
253
13.5
61.0
0.8
2.0
208/230-1-60
187
253
14.7
73.0
0.8
2.1
208/230-3-60
187
253
9.6
63.0
0.8
2.1
208/230-1-60
187
253
15.4
83.0
0.8
3.6
208/230-3-60
187
253
12.2
77.0
0.8
3.6
460-3-60
414
506
5.1
35.0
0.8
1.9
208/230-1-60
187
253
18.6
105.0
0.8
4.1
208/230-3-60
187
253
13.8
88.0
0.8
4.1
460-3-60
414
506
6.3
39.0
0.8
2.0
208/230-1-60
187
253
20.5
109.0
1.6
4.1
208/230-3-60
187
253
14.7
91.0
1.6
4.1
460-3-60
414
506
6.5
46.0
0.9
2.0
208/230-1-60
187
253
27.6
158.0
1.6
6.2
208/230-3-60
187
253
18.1
137.0
1.6
6.2
460-3-60
414
506
9.0
62.0
0.9
3.2
030
036
042
048
060
*See Legend and Notes on page 20.
—19—
ELECTRIC HEAT
Nominal kW*
FLA
—/—
3.8/5.0
5.4/7.2
7.5/10.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
—/—
3.8/5.0
7.5/10.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
—/—
5.0
10.0
15.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
15.0/20.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
15.0/20.0
—/—
5.0
10.0
15.0
20.0
—/—‚
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
15.0/20.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
15.0/20.0
—/—
5.0
10.0
15.0
20.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
15.0/20.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
15.0/20.0
—/—
5.0
10.0
15.0
20.0
—/—
18.1/20.8
25.9/30.0
36.1/41.7
—/—
18.1/20.8
25.9/30.0
36.1/41.7
—/—
10.4/12.0
20.8/24.1
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
—/—
10.4/12.0
20.8/24.1
31.3/36.1
—/—
6.0
12.0
18.0
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
72.2/83.3
—/—
10.4/12.0
20.8/24.1
31.3/36.1
41.6/48
—/—
6.0
12.0
18.0
24.1
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
72.2/83.3
—/—
10.4/12
20.8/24.1
31.3/36.1
41.6/48
—/—
6.0
12.0
18.0
24.1
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
72.2/83.3
—/—
10.4/12.0
20.8/24.1
31.3/36.1
41.6/48
—/—
6.0
12.0
18.0
24.1
POWER SUPPLY
MAX FUSE
UNIT MCA or CKT. BKR.
MOCP
19.7/19.7
25.1/28.5
34.9/40.0
47.6/54.6
21.3/21.3
25.2/28.7
35.0/40.1
47.8/54.7
14.9/14.9
15.7/17.7
28.7/32.7
23.7/23.7
27.1/30.5
36.9/42.0
49.6/56.6
72.2/82.6
19.7/19.7
19.7/19.7
30.6/34.6
43.6/49.6
9.1
9.9
17.4
24.9
28.2/28.2
28.2/31.2
37.5/42.6
50.3/57.2
72.8/83.3
95.4/109.3
22.2/22.2
22.2/22.2
31.2/35.2
44.2/50.2
57.1/65.1
10.7
10.7
17.5
25.1
32.6
31.3/31.3
31.3/31.3
37.5/42.6
50.3/57.2
72.8/83.3
95.4/109.3
24.1/24.1
24.1/24.1
31.2/35.2
44.2/50.2
57.1/65.1
11.0
11.0
17.5
25.1
32.6
42.3/42.3
42.3/42.3
40.1/42.6
52.9/59.8
75.4/85.9
98.0/111.9
30.4/30.4
30.4/30.4
33.8/37.8
46.8/52.9
59.7/67.7
15.4
15.4
19.0
26.6
34.1
25/25
25/30
40/50
50/60
25/25
25/30
40/50
50/60
20/20
20/20
30/35
30/30
30/30
40/50
50/60
—
25/25
25/25
35/35
45/50
15
15
20
25
35/35
35/35
40/50
60/60
—
—
30/30
30/30
35/40
45/60
—
15
15
20
30
35
40/40
40/40
40/50
60/60
—
—
30/30
30/30
35/40
45/60
—
15
15
20
30
35
50/50
50/50
40/50
60/60
—
—
35/35
35/35
35/40
50/60
—
20
20
20
30
35
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
80/90
—
—
—
—
—
—
—
—
—
—
—
—
80/90
100/110
—
—
—
—
60/70
—
—
—
—
—
—
—
—
—
80/90
100/110
—
—
—
—
60/70
—
—
—
—
—
—
—
—
—
80/90
100/125
—
—
—
—
60/70
—
—
—
—
—
702B WITH ICM FIOP ELECTRICAL DATA
UNIT
SIZE
702B
VOLTAGE
RANGE
V-PH-Hz
Min
Max
OUTDOOR
INDOOR
FAN MOTOR FAN MOTOR
COMPRESSOR
RLA
LRA
FLA
FLA
024
208/230-1-60
187
253
13.5
61.0
0.8
4.3
030
208/230-1-60
187
253
14.7
73.0
0.8
4.3
036
208/230-1-60
187
253
16.9
83.0
1.6
6.8
042
208/230-1-60
187
253
22.4
105.0
0.9
6.8
048
208/230-1-60
187
253
20.5
109.0
1.6
6.8
060
208/230-1-60
187
253
27.6
158.0
1.6
9.1
ELECTRIC HEAT
Nominal kw*
FLA
—/—
3.8/5.0
5.4/7.2
7.5/10.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
15.0/20.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
15.0/20.0
—/—
3.8/5.0
5.4/7.2
7.5/10.0
11.3/15.0
15.0/20.0
—/—
18.1/20.8
25.9/30.0
36.1/41.7
—/—
18.1/20.8
25.9/30.0
36.1/41.7
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
72.2/83.3
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
72.2/83.3
—/—
18.1/20.8
25.9/30.0
36.1/41.7
54.2/62.5
72.2/83.3
SINGLE POINT
POWER SUPPLY
MAX FUSE
UNIT MCA or CKT. BKR.
22.2/22.0
27.9/31.4
37.8/42.9
50.5/27.5
23.5/23.5
27.9/31.4
37.8/42.9
50.5/57.5
26.9/26.9
31.1/34.5
40/9/46.0
53.6/60.6
76.2/86.6
30.9/30.9
31.1/34.5
40.9/46.0
53.6/60.6
76.2/86.6
98.8/112.7
34.0/34.0
34.0/34.5
40.9/46.0
53.6/60.6
76.2/86.6
98.8/112.7
45.2/45.2
45.2/45.2
43.8/48.9
56.5/63.5
79.1/89.5
101.6/115.5
30/30
30/35
40/50
60/60
30/30
30/35
40/50
60/60
35/35
35/40
50/50
60/–
—
40/10
40/40
50/50
60/–
—
—
40/40
40/40
50/50
60/–
—
—
60/60
60/60
50/50
60/–
—
—
MOCP
—
—
—
—
—
—
—
—
—
—
—
–/70
80/90
—
—
—
–/70
90/90
100/125
—
—
—
–/70
90/90
100/125
—
—
—
–/70
90/90
110/125
ELECTRICAL DATA LEGEND
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
LEGEND
FLA
LRA
MCA
MOCP
RLA
—
—
—
—
—
Full Load Amps
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
Rated Load Amps
®
*Heater capacity (KW) based on heater voltage of 208v, 240v, & 480v.
If power distribution voltage to unit varies from rated heater voltage,
heater KW will vary accordingly.
NOTES:
1. In compliance with NEC (National Electrical Code) requirements
for multimotor and combination load equipment (refer to NEC
Articles 430 and 440), the overcurrent protective device for the
unit shall be Power Supply fuse . The CGA (Canadian Gas
Association) units may be fuse or circuit breaker.
2. Minimum wire size is based on 60 C copper wire. If other than
60 C wire is used, or if length exceeds wire length in table,
determine size from NEC.
3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine
the percentage of voltage imbalance.
Average Voltage = 452 + 464 + 455
3
1371
=
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 452 = 5 v
(BC) 464 457 = 7 v
(AC) 457 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is
more than 2%, contact your local electric utility company
immediately.
% Voltage imbalance
max voltage deviation from average voltage
= 100 x
average voltage
—20—
TYPICAL WIRING SCHEMATIC — 208/230-1-60 SHOWN
—21—
TYPICAL WIRING SCHEMATIC — 208/230-3-60 SHOWN
208/230-3-30
—22—
TYPICAL WIRING SCHEMATIC — 460-3-60 SHOWN
—23—
ICM FIOP WIRING SCHEMATIC — 208-230-1-60 SHOWN
—24—
CONTROLS
SEQUENCE OF OPERATION
Cooling — When the system thermostat calls for cooling, 24 V
is supplied to the “Y” and “G” terminals of the thermostat. This
completes the circuit to the contactor coil (C) and indoor
(evaporator) fan time delay relay (TDR). The normally open
contacts of C close and complete the circuit to compressor motor
(COMP) and to outdoor (condenser) fan motor (OFM). Both
motors start instantly. The set of normally open contacts of TDR
close and complete the circuit through IFM. The IFM starts
instantly.
On the loss of the thermostat call for cooling, 24 v is removed
from both the “Y” and “G” terminals (provided the fan switch is in
the “AUTO” position) deenergizing the compressor contactor
and opening the contacts supplying power to compressor/OFM.
After a 60-second delay, the IFM shuts off. If the thermostat fan
selector switch is in the “ON” position, the IFM will run
continuously.
Heating — If accessory electric heaters are installed, on a call
for heat, circuit R-W is made through the thermostat contacts.
Circuit R-G is made which energizes the TDR. If the heaters are
staged, then the thermostat closes a second set of contacts
(W2) when second stage is required. When thermostat is
satisfied, contacts open, deenergizing the heater relay and the
TDR. After a 60-second delay, the IFM shuts off. If the
thermostat fan selector switch is in the “ON” position, the IFM will
run continuously.
NOTE: On units with a Time Guard® II device: once the
compressor has started and then stopped, it cannot be restarted
again until 5 minutes have elapsed.
ICM FIOP Models Only — The indoor blower operation with
a call for fan operation (G) in cooling mode will perform by the
on/off delay profile selected at start up on the easy select™
board.
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GUIDE SPECIFICATIONS
PACKAGED ELECTRIC COOLING UNITS
CONSTANT VOLUME APPLICATION
HVAC Guide Specifications
Size Range: 2 to 5 Tons, Nominal Cooling
Bryant Model Number: 702B
Part 1—General
SYSTEM DESCRIPTION
Outdoor rooftop or ground mounted, electric cooling unit
utilizing a hermetic compressor for cooling duty and optional electric heating. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.
Condenser fan/coil section shall have a draw-thru design
with vertical discharge for minimum sound levels.
QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI Standards 210/
240-94 and 270-95.
B. Unit shall be designed in accordance with UL Standard
1995.
C. Unit shall be manufactured in a facility registered to ISO
9001 manufacturing quality standard.
D. Unit shall be UL listed and c-UL certified as a total package
for safety requirements.
E. Roof curb shall be designed to conform to NRCA Standards.
F. Insulation and adhesives shall meet NFPA 90A requirements for flame spread and smoke generation.
G. Cabinet insulation shall meet ASHRAE Standard 62P.
DELIVERY, STORAGE AND HANDLING
Unit shall be stored and handled per manufacturer’s recommendations.
Part 2 — Products
EQUIPMENT
A. General:
Factory-assembled, single-piece, cooling unit. Contained
within the enclosure shall be all factory wiring, piping, controls, refrigerant charge (R-410A), and special features required prior to field start-up.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of phosphated, zinccoated, pre-painted steel capable of withstanding 500
hours of salt spray.
2. Normal service shall be through a single removable
cabinet panel.
3. The unit shall be constructed on a rust proof basepan
that has an externally trapped, integrated sloped drain
pan.
4. Evaporator fan compartment top surface shall be insulated with a minimum 1/2-in. thick, flexible fiberglass insulation, coated on the air side and retained by
adhesive and mechanical means. The evaporator wall
sections will be insulated with a minimum semi-rigid
foil-faced board capable of being wiped clean. Aluminum foil-faced fiberglass insulation shall be used in the
entire indoor air cavity section.
5. Unit shall have a field-supplied condensate trap.
C. Fans:
1. The evaporator fan shall be 3-speed, direct-drive, as
shown on equipment drawings, or factory installed optional variable speed motor and control.
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2. Fan wheel shall be made from steel, and shall be doubleinlet type with forward curved blades with corrosion resistant finish. Fan wheel shall be dynamically balanced.
3. Condenser fan shall be direct drive propeller type with
aluminum blades riveted to corrosion resistant steel
spiders, be dynamically balanced, and discharge air
vertically.
D. Compressor:
1. Fully hermetic compressors with factory-installed vibration isolation.
2. Scroll compressors shall be standard on all units.
E. Coils:
Evaporator and condenser coils shall have aluminum
plate fins mechanically bonded to seamless copper tubes
with all joints brazed. (Copper/copper and vinyl-coated
construction available as option.) Tube sheet openings
shall be belled to prevent tube wear.
F. Refrigerant Metering Device:
Refrigerant metering device shall be of the single body
fixed orifice feed type.
G. Filters:
Filter section shall consist of field-installed, throwaway, 1in. thick fiberglass filters of commercially available sizes.
H. Controls and Safeties:
1. Unit controls shall be complete with a self-contained
low voltage control circuit.
2. Units shall incorporate an internal compressor protector that provides reset capability.
3. Unit shall provide High and Low/Loss-of-Charge Pressure Safety Protection.
I. Operating Characteristics:
1. Unit shall be capable of starting and running at 125°F
ambient outdoor temperature, exceeding maximum
load criteria of ARI Standard 210.
2. Compressor with standard controls shall be capable of
operation down to 40° F ambient outdoor temperature.
(55°F with ICM FIOP)
3. Unit shall be provided with 60-second fan time delay after the thermostat is satisfied (with standard indoor
blower motor).
4. On ICM FIOP-Fan on/off delay profile is selected (for
cooling) on the Easy Select™ Board.
J. Electrical Requirements:
All unit power wiring shall enter the unit cabinet at a single
location.
K. Motors:
1. Compressor motors shall be of the refrigerant-cooled
type with line-break thermal and current overload protection.
2. All fan motors shall have permanently lubricated bearings, and inherent, automatic reset, thermal overload
protection.
3. Condenser fan motor shall be totally enclosed.
L. Grille
1. Louvered Grille:
Louvered grille shall be standard on all units.
M. Special Features Available
1. ICM Indoor Blower FIOP:
Integral control motor shall be a factory installed option
for optimizing comfort levels in all operating modes and
GUIDE SPECIFICATIONS continued
increasing system efficiency.
2. Coil Options:
Shall include factory-installed optional copper/copper and vinyl-coated refrigerant coils.
3. Economizer:
a.Economizer controls capable of providing free cooling using outside air.
b. Equipped with low leakage dampers not to exceed
3% leakage, at 1.0 in. wg pressure differential.
c. Spring return motor shuts off outdoor damper on
power failure.
4. Flat Roof Curb:
Curbs shall have seal strip and a wood nailer for
flashing and shall be installed per manufacturer’s instructions.
5. Manual Outdoor Air Damper:
Package shall consist of damper, birdscreen, and
rainhood which can be preset to admit outdoor air for
year-round ventilation.
6. Thermostat:
To provide for one-stage heating and cooling in addition manual or automatic changeover and indoor fan
control.
7. Low Ambient Package:
Shall consist of a solid-state control and condenser
coil temperature sensor for controlling condenser-fan
8.
9.
10.
11.
12.
13.
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motor operation, which shall allow unit to operate
down to 0° F outdoor ambient temperature.
Filter Rack Kit:
Shall provide filter mounting for downflow applications.
Square-To-Round Duct Transitions:
Shall have the ability to convert the supply and return
openings from rectangular to round. (024-048 only)
Compressor Protection (Time Guard® II Kit)
Solid-state control shall protect compressor by preventing “short cycling.”
Crankcase Heater:
Shall provide anti-floodback protection for low-load
cooling applications.
Electric heaters:
a. Electric heater shall be available as a fieldinstalled option.
b. Heater elements shall be open wire type, adequately supported and insulated with ceramic
bushings.
c. Electric heater packages must provide single point
power connection capability.
Compressor Hard Start Kit:
Shall be available to give a boost to the compressor
motor at each start-up. (Single Phase only).
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
UNIT MUST BE INSTALLED IN ACCORDANCE
WITH INSTALLATION INSTRUCTIONS
Cancels: PDS 702B.24.1
Form: PDS 702B.24.2
© 2001 Bryant Heating & Cooling Systems, 7310 W. Morris St., Indpls., IN 46231
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PRINTED IN U.S.A.
Catalog No. 5270-202
5-01