Bryant 702B User Manual
SINGLE-PACKAGE
Model 702B
ELECTRIC COOLING UNITS with
Puron® (R-410A) Refrigerant
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
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
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.
with a SEER (Seasonal Energy
provides better comfort and energy efficiency.
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.
Direct-drive multi-speed, PSC (permanent split capacitor)
blower motor
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 lea ves 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. The y 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.)
is standard on all 702B models.
Copyright 2001 Bryant Corporation
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 le vel
installation with or without a mounting pad. Con venient 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 con venient 3/4-in. wide perimeter flange makes fr ame
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 evapor ator 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.
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.
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
—2—
P
E
AL
CU
AD
BT
XT
CC
AC
CC
CU
VS
VT
VC
VU
Model number nomenclature
— Aluminum
— Copper
Model Number
702B – Single
Packaged Electric
Cooling
TT
Electrical Supply
N – *208/230-1-60
– 208/230-3-60
– 460-3-60
Nominal Cooling Capacity
024 – 2 ton
030 – 2.5 ton
036 – 3 ton
042 – 3.5 ton
048 – 4 ton
060 – 5 ton
702B N X 024
000 VS
Options
BT – AL evap, vinyl condens
– AL evap, CU condens
Options
– CU evap & condens
(None) – Wire Grille
– Louvered Grille
– Variable speed (VS) Unit
– Wire Grille and Vinyl-Coated Condenser
– VS, AL evap, vinyl condens
Coil Fin
– VS, AL evap, CU condens
– Louvered Grille and Vinyl-Coated Con-
– VS, CU evap & condens
denser Coil Fin
Only used if ordering an option
– Wire Grille, AL Evaporator and CU/CU
Condenser Coil
– Louvered Grille, AL Evaporator and CU/
CU con
*Variable speed units are only available
in 208/230-1-60 (N)
ARI* capacities
COOLING CAPACITIES AND EFFICIENCIES
UNIT
702B
024 2 800 24,000 12.0 72
030 2-1/2 1000 29,000 12.0 72
036 3 1200 35,000 12.0 72
042 3-1/2 1400 41,000 12.0 73
048 4 1600 48,000 12.0 78
060 5 1750 59,000 12.0 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).
NOMINAL
TONS
STANDARD
CFM
702B WITH ICM FIOP RATINGS
UNIT
702B
024 24,000 10.7 12.7
030 29,000 10.7 12.7
036 35,000 10.6 12.5
042 41,000 10.7 12.5
048 48,000 10.5 12.3
060 59,000 10.4 12.3
**“A” Capacity- 80°F indoor db/67°F indoor wb & 95°F outdoor db.
“A”**
CAPACITY
NET COOLING
CAPACITIES
(Btuh)
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.
“A”**
EER
SEER
SEER†
SOUND
RATINGS‡
(dB)
—3—
OUTDOOR SOUND: ONE-THIRD OCTAVE BAND DATA - DECIBELS
MODEL NO. 702B
Frequency (Hz) 024 030 036 042 048 060
63
125
250
500
1000
2000
4000
8000
44.8 48.0 50.0 49.1 51.4 53.7
60.4 58.2 60.4 63.9 65.2 62.6
58.3 59.2 61.6 65.2 69.7 65.9
64.8 65.8 66.9 67.9 72.7 70.6
66.9 67.7 67.8 66.7 72.9 71.6
64.3 64.8 64.6 63.8 69.8 68.2
59.8 61.8 60.7 60.2 65.8 65.8
51.8 53.6 52.8 50.7 57.9 58.3
PHYSICAL DATA
UNIT SIZE 702B 024 030 036 042 048 060
NOMINAL CAPACITY (ton)
OPERA TING WEIGHT (lb)
COMPRESSORS
Quantity
REFRIGERANT*
REFRIGERANT (R-410A) Quantity (lb.)
REFRIGERANT METERING DEVICE
ORIFICE ID (in.)
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)
Cutout
Reset (Auto.)
LOSS-OF-CHARGE/LOW-PRESSURE SWITCH
(Liquid Line) (psig)
Cutout
Reset (Auto.)
RETURN-AIR FILTERS (In.)*
Throwaway
* 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 2-1/2 3 3-1/2 4 5
270 291 299 321 326 399
Scroll
5.0 5.5 6.9 9.0 9.5 10.0
Accurater® Piston
.057 .057 .065 .070 .073 .086
1—17
9.1
2350
22
1/8 (825)
3—15
3.7
800
10 x 10
1/4
800
10 x 10
1/2
1—17
12.7
2350
22
1/8 (825)
3—15
3.7
1000
10 x 10
1/4
1000
10 x 10
1/2
2—17
9.1
2350
22
1/8 (825)
3—15
3.7
1200
10 x 10
1/2
1200
10 x 10
3/4
2—17
12.3
2350
22
1/8 (825)
3—15
4.7
1400
11 x 10
3/4
1400
11 x 10
3/4
2—17
12.3
3300
22
1/4 (1100)
4—15
4.7
1600
11 x 10
3/4
1600
11 x 10
3/4
1/4 (1100)
11 x 10
11 x 10
610 ± 15
420 ± 25
20 ± 5
45 ± 10
20 x 20 x 1 20 x 20 x 1 20 x 24 x 1 24 x 30 x 1 24 x 30 x 1 24 x 30 x 1
2—17
16.4
3300
22
4—15
4.7
1750
1.0
1750
1.0
T
O
D
E
A
I
R
F
I
I
T
A
R
S
E
C
R
E
R
U
T
C
N
A
U
F
U
N
A
5
2
3
2
A
M
A
R
C
O
M
H
P
E
A
Y
R
A
T
I
I
S
L
T
Y
P
I
U
N
M
G
P
W
I
T
H
®
E
T
Q
N
U
E
I
P
M
0
4
2
D
T
A
R
N
A
D
—4—
OPTIONS AND ACCESSORIES
Factory-installed options
Coil options
construction for refrigerant coils. Units are shipped standard with
copper tube/aluminum fin construction. See model number
nomenclature for coil options.
Electronic V ariable-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.
Field-installed accessories
Economizer with Solid-State Controls and Barometric
Relief Dampers
Manual Air Damper (25% open)
Electric Heaters
Filter Rack
Flat Roof Curbs (8-in. and 14-in.)
Square-to-Round Duct Transition Kit
Thermostats
Crankcase Heater
Low Ambient Kit (Motormaster® II Control)
Solid-State Time Guard® II Device
Lifting Kit
Compressor Hard Start Kit
Economizer with solid-state controls and barometric relief
dampers
cooling and reduce compressor operation.
Manual outside air damper includes hood and filter rack with
adjustable damper blade for up to 25% outdoor air.
include copper/copper and vinyl-coated
includes filter racks and provide outdoor air during
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.
Flat roof curbs in both 8 in. and 14 in. sizes are a vailable f or roof
mounted applications.
Square-to-round duct transition kit enables 024-048 size
units to be fitted to 14 in. round ductwork.
Thermostats provide control for the system heating and cooling
functions. Thermostat models are av ailable in both programmab le
and non-programmable versions .
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.
Crankcase heater provides anti-floodback protection for low-
load cooling applications.
Low-ambient kit (Motormaster II control) allows the use of
mechanical cooling down to outdoor temperatures as low as 0°F.
Solid-state Time Guard II device provides short-cycling
protection for the compressor. Not required with corporate
electronic thermostats.
Filter rack features easy installation, serviceability, and high-
filtering 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
ODS CATALOG
ORDERING NO.
CPHEATER052A00
CPHEATER069A00
CPHEATER065A00
CPHEATER051A00
CPHEATER053A00
CPHEATER055A00
CPHEATER056A00
CPHEATER057A00
CPHEATER059A00
CPHEATER060A00
CPHEATER061A00
CPHEATER062A00
CPHEATER063A00
LEGEND
ODS — Order Distribution System
NOTE: Electric heaters are rated at 240 v and 480 v. Refer to Multiplication Factors table for other voltages.
NOMINAL CAPACITY
(kW)
ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)
5.0 XXXXXX
7.5 XXXXXX
10.0 X X X X X X
15.0 X X X X X
20.0 X X X X
ELECTRIC HEATERS (208/230 — 3 PHASE — 60 Hz)
5.0 XXXXX
10.0 X X X X X
15.0 X X X X X
20.0 X X X X
ELECTRIC HEATERS (460 V — 3 PHASE — 60 Hz)
5.0 X X X X
10.0 X X X X
15.0 X X X X
20.0 X X X X
024 030 036 042 048 060
USED WITH SIZES
MINIMUM AIRFLOW FOR RELIABLE ELECTRIC HEATER OPERATION
UNIT 024 030 036 042 048 060
AIRFLOW
750 750 1250 1205 1500 1800
—5—
ECONOMIZER
FILTER RACK MANUAL OUTSIDE AIR DAMPER
REPLACEMENT
PANEL
MANUAL OUTSIDE
AIR HOOD
DAMPER
BLADE
—6—
7
BASE UNIT DIMENSIONS — 702B024-036
UNIT
702B024
702B030 208/230-1-60, 208/230-3-60 291 132.0 39.02 [991.1] 19.5 [495.3] 15.5 [393.7] 17.6 [447.0]
702B036 208/230-1-60, 208/230-3-60, 460-3-60 299 135.6 35.02 [889.5] 19.5 [495.3] 15.3 [387.4] 16.5 [419.1]
ELECTRICAL
CHARACTERISTICS
208/230-1-60 270 122.5 37.02 [940.3] 18.5 [469.9] 14.5 [368.3] 16.0 [406.4]
UNIT WEIGHT
lb kg X Y Z
UNIT HEIGHT
in. [mm]
“A”
CENTER OF GRAVITY
in. [mm]
702B 024-036 Dimensions
—7—
BASE UNIT DIMENSIONS – 702B042-060
UNIT
702B042 208/230-1-60, 208/230-3-60, 460-3-60 321 146 38.98 [990.2] 20.5 [520.7] 16.8 [425.5] 16.6 [421.6]
702B048 208-230-1-60, 208/230-3/60, 460-3-60 326 148 38.98 [990.2] 19.5 [495.3] 17.6 [447.6] 18.0 [457.2]
702B060 208/230-1-60, 208/230-3-60, 460-3-60 399 181 42.98 [1091.7] 20.5 [520.7] 16.2 [412.8] 17.6 [447.0]
ELECTRICAL
CHARACTERISTICS
UNIT WEIGHT
lb kg X Y Z
UNIT HEIGHT
in. [mm]
“A”
CENTER OF GRAVITY
in. [mm]
702B 042-060 Dimensions
—8—
ACCESSORY DIMENSIONS
UNIT SIZE ODS CATALOG NUMBER
50GL024-036
50GL042-060
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]
A
in. [mm]
B
in. [mm]
C
in. [mm]
D
in. [mm]
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 brack et must also be used when required by code
for hurricane or seismic conditions. This bracket is available through Micrometl.
HVAC unit
Screw
(NOTE A)
*Gasketing
outer flange
Flashing field
supplied
Roofing material
field supplied
Cant strip
field supplied
base
Gasketing
inner flange*
Wood nailer*
Roofcurb*
Insulation (field
supplied)
Duct work
field supplied
Flashing field
Roofing material
Screw
(NOTE A)
*Gasketing
outer flange
supplied
field supplied
Cant strip
field supplied
HVAC unit
base
Gasketing
inner flange*
Duct work
field supplied
Wood nailer*
Roofcurb*
Insulation (field
supplied)
Roof
*Provided with roofcurb
Roof Curb for Small Cabinet
Note A: When unit mounting screw is used,
retainer bracket must also be used.
B Typ .
Insulated
deck pan
Return opening
(B X C)
5
44
/16"
Supply opening
(B x C)
D
C Typ .
Long
Support
Short
Support
Roof
*Provided with roofcurb
Roof Curb for Large Cabinet
Note A: When unit mounting screw is used,
retainer bracket must also be used.
R/A
A
Gasket around
S/A
duct
Insulated
deck pan
Gasket around
outer edge
—9—
Loading...