Table of Contents
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NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS .....................................................1
Introduction ....................................................................................2
Receiving and Installation..............................................................2
Check Equipment......................................................................2
Provide Unit Support ................................................................2
Provide Clearances....................................................................2
Rig and Place Unit....................................................................2
Select and Install Ductwork .....................................................5
Provide for Condensate Disposal .............................................6
Install Electrical Connections...................................................7
PRE-START-UP ..........................................................................10
START-UP ...................................................................................12
Check for Refrigerant Leaks ..................................................12
Start-Up Adjustments..............................................................12
Defrost Control .......................................................................19
MAINTENANCE.........................................................................20
Air Filter..................................................................................22
Indoor Blower and Motor.......................................................22
Outdoor Fan ............................................................................22
Electrical Controls and Wiring...............................................22
Refrigerant Circuit ..................................................................22
Indoor Airflow ........................................................................23
Metering Devices-Accurater Piston.......................................23
Pressure Switches....................................................................23
Loss of Charge Switch ...........................................................23
High-Pressure Switch..............................................................23
Copeland Scroll Compressor (Puron Refrigerant).................23
Refrigerant System..................................................................23
System Information.................................................................24
TROUBLESHOOTING ...............................................................24
Start-Up Checklist ........................................................................24
NOTE TO INSTALLER - READ THESE INSTRUCTIONS
CAREFULLY AND COMPLETELY before installing this unit.
Also, make sure the Owner's Manual and Service Instructions are
left with the unit after installation.
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified personnel should install, repair, or service
air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters. All other operations should be performed
by trained service personnel. When working on air-conditioning
equipment, observe precautions in the literature, tags, and labels
attached to the unit, and other safety precautions that may apply.
Installation, Start-Up,
and Service Instructions
SINGLE-PACKAGE HEAT PUMP UNITS
WITH PURON (R-410A) REFRIGERANT
-1-
Cancels: II 602B-24-1
Fig. 1-Unit 602B
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
available for all brazing operations.
WARNING: Improper installation, adjustment, alter-
ation, service, maintenance, or use can cause explosion,
fire, electric shock, or other occurrences, which could
cause serious injury or death or damage your property.
Consult a qualified installer or service agency for infor-
mation or assistance. The qualified installer or agency
must use only factory-authorized kits or accessories when
modifying this product.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the product or in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words - DANGER, WARNING, CAU-
TION, and NOTE. Danger identifies the most serious hazards,
which will result in severe personal injury or death. Warning
indicates a condition that could cause serious personal injury or
death. Caution is used to identify unsafe practices, which would
result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
1. The power supply (volts, phase, and hertz) must correspond
to that specified on unit rating plate.
2. The electrical supply provided by the utility must be
sufficient to handle load imposed by this unit.
602B
II 602B-24-2
12-00
C99063
.
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Summary of Contents for Bryant 302B
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Page 1: Table Of Contents
Installation, Start-Up, 602B and Service Instructions SINGLE-PACKAGE HEAT PUMP UNITS WITH PURON (R-410A) REFRIGERANT Cancels: II 602B-24-1 II 602B-24-2 12-00 NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. TABLE OF CONTENTS SAFETY CONSIDERATIONS .............1 Introduction ..................2... -
Page 2: Introduction
Check all items against shipping list. Immediately notify the 1. Remove unit from shipping carton. Leave top shipping skid nearest Bryant Air Conditioning office if any item is missing. To on the unit as a spreader bar to prevent the rigging straps prevent loss or damage, leave all parts in original packages until from damaging the unit. - Page 3 C00160 CENTER OF GRAVITY UNIT HEIGHT UNIT WEIGHT IN. (MM) UNIT ELECTRICAL CHARACTERISTICS IN. (MM) ”A” 602B024 208/230-1-60 135.6 35.02 (889.5) 19.0 (482.6) 18.3 (463.6) 16.0 (406.4) 602B030 208/230-1-60,208/230-3-60 145.2 37.02 (940.3) 20.0 (508.0) 19.3 (489.0) 17.6 (447.0) 602B036 208/230-1-60,208/230-3-60, 460-3-60 148.8 37.02 (940.3) 20.0 (508.0)
- Page 4 C00161 CENTER OF GRAVITY UNIT HEIGHT UNIT WEIGHT IN. (MM) UNIT ELECTRICAL CHARACTERISTICS IN. (MM) ”A” 602B042 208/230-1-60, 208/230-3-60, 460-3-60 158.8 40.98 (1040.9) 21.0 (533.4) 20.5 (520.7) 16.6 (421.6) 602B048 208/230-1-60, 208/230-3-60, 460-3-60 161.0 40.98 (1040.9) 20.0 (508.0) 21.3 (539.8) 18.0 (457.2) 602B060 208/230-1-60, 208/230-3-60, 460-3-60...
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Page 5: Select And Install Ductwork
C00071 CORNER WEIGHTS (SMALL CABINET) CORNER WEIGHTS (LARGE CABINET) Unit Unit Total Weight Total Weight Corner Weight 1 Corner Weight 1 Corner Weight 2 Corner Weight 2 Corner Weight 3 Corner Weight 3 Corner Weight 4 Corner Weight 4 → Fig. -
Page 6: Provide For Condensate Disposal
HVAC unit HVAC unit base base Gasketing inner flange* Screw Screw Gasketing (NOTE A) inner flange* (NOTE A) *Gasketing *Gasketing outer flange outer flange Wood nailer* Wood nailer* Flashing field Flashing field supplied supplied Roofcurb* Roofcurb* Insulation (field Insulation (field supplied) supplied) Roofing material... -
Page 7: Install Electrical Connections
OPTIONAL OPTIONAL RETURN SUPPLY OPENING OPENING MAXIMUM ALLOWABLE DIFFERENCE (in.) C99065 Fig. 6—Unit Leveling Tolerances 2" EVAP. COIL COND. COIL condensate connection to ensure proper drainage. Make sure that the outlet of the trap is at least 1 in. lower than the drain-pan C99096 condensate connection to prevent the pan from overflowing. - Page 8 TABLE 1—PHYSICAL DATA—UNIT 602B UNIT SIZE 602B024 602B030 602B036 602B042 602B048 602B060 NOMINAL CAPACITY (ton) 2-1/2 3-1/2 OPERATING WEIGHT (lb.) COMPRESSOR QUANTITY TYPE SCROLL COMPRESSOR REFRIGERANT R-410A REFRIGERANT METERING DEVICE Accurater Refrigerant (R-410A) Quantity (lb.) 10.6 12.4 ORIFICE ID (in.) 0.061 0.061 0.067...
- Page 9 INDOOR THERMOSTAT RETURN FROM TOP COVER POWER SOURCE DISCONNECT PER NEC* *NEC - NATIONAL ELECTRICAL CODE C00063 Fig. 10—Typical Installation 1” MIN. TRAP OUTLET 2” MIN. C99013 Fig. 12—Condensate Trap The unit transformer supplies 24-v power for complete system including accessory electrical heater. An automatic-reset circuit breaker (See Fig.
- Page 10 TABLE 3—ELECTRICAL DATA—602B VOLTAGE UNIT 602B COMPRESSOR ODFM IDFM ELECTRIC HEAT SINGLE POINT POWER SUPPLY V-PH-HZ RANGE SIZE Nominal Kw* UNIT MCA MAX FUSE OR CKT BKR MOCP 19.8/19.8 30/30 208/230–1–60 13.5 61.0 3.8/5.0 18.1/20.8 42.3/45.8 50/50 7.5/10.0 36.1/41.7 64.9/71.9 70/80 22.9/22.9 30/30...
- Page 11 C00152 → Fig. 13—Wiring Schematics —11—...
- Page 12 C00153 Fig. 14—Wiring Schematics —12— →...
- Page 13 C00154 → Fig. 15—Wiring Schematics —13—...
- Page 14 EXAMPLE: Supply voltage is 460-3-60. AB = 452 v LEGEND BC = 464 v AC = 455 v — Full Load Amps — Locked Rotor Amps 452 + 464 + 455 ® Average Voltage = — Minimum Circuit Amps MOCP — Maximum Overcurrent Protection 1371 —...
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Page 15: Pre-Start-Up
PRE-START-UP WARNING: Failure to observe the following warnings could result in serious personal injury or death: 1. Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system. 2. Do not operate compressor or provide any electric power to unit unless compressor terminal cover is in place and secured. -
Page 16: Start-Up
6. Each unit system has 2 Schrader-type ports, one low-side the internal protector will shut off the compressor. The 3-phase Schrader fitting located on the suction line, and one power leads to the unit must be reversed to correct rotation. When high-side Schrader fitting located on the compressor dis- turning backwards, the difference between compressor suction and charge line. - Page 17 INDOOR COIL OUTDOOR COIL Bypass Position Metering Position LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Metering Device Arrow indicates direction of flow C00095 Fig. 22—Typical Heat Pump Operation, Heating Mode OUTDOOR COIL INDOOR COIL Metering Position Bypass...
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Page 18: Defrost Control
TABLE 4—WET COIL AIR DELIVERY UNIT 602B 024-060 (DEDUCT 10 PERCENT FOR 208-V)* EXTERNAL STATIC PRESSURE (IN. WG) UNIT MOTOR SPEED Watts Watts Watts High Watts Watts 1202 1170 1079 Watts High 1174 Watts 1374 1290 1205 1116 1020 Watts 1500 1408 1301... - Page 19 → TABLE 6—ELECTRIC HEAT PRESSURE DROP TABLE SMALL CABINET: 024-036CFM 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 10 kw 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07 0.09...
- Page 20 (030) 60 Hz COOLING CHARGING CHART (024) 60 Hz COOLING CHARGING CHART For Use with Units Using R410a Refrigerant For use with units using R410a Refrigerant SUCTION LINE TEMPERATURE (DEG. C) OUTDOOR SUCTION LINE TEMPERATURE (DEG. C) TEMP OUTDOOR TEMP 1173 1152 1104...
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Page 21: Maintenance
(048) 60Hz COOLING CHARGING CHART (060) 60 Hz COOLING CHARGING CHART For use with units using R410a Refrigerant OUTDOOR For use with units using R410a Refrigerant TEMP SUCTION LINE TEMPERATURE (DEG. C) SUCTION LINE TEMPERATURE (DEG. C) OUTDOOR TEMP 1173 1173 1104 1104... -
Page 22: Indoor Blower And Motor
CESO130076–00 Speedup Quiet Defrost interval Pins Shift DIP switches A99442 Fig. 31—Defrost Control II. INDOOR BLOWER AND MOTOR results, spray condenser coil fins from inside to outside the unit. On units with an outer and inner condenser coil, be sure to clean NOTE: All motors are prelubricated. -
Page 23: Electrical Controls And Wiring
6. Ensure that setscrew engages the flat area on the motor shaft IX. PRESSURE SWITCHES when tightening. Pressure switches are protective devices wired into control circuit (low voltage). They shut off compressor if abnormally high or low 7. Replace grille. pressures are present in the refrigeration circuit. -
Page 24: Refrigerant System
XIII. REFRIGERANT SYSTEM XIV. SYSTEM INFORMATION This step covers the refrigerant system of the 602B, including the A. Time-Delay Relay compressor oil needed, servicing systems on roofs containing The Time-Delay Relay (TDR) is a solid-state control, recycle synthetic materials, the filter drier and refrigerant charging. delay timer which keeps indoor blower operating for 60 sec on A. - Page 25 HEAT PUMP WITH PURON—QUICK REFERENCE GUIDE Puron refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement components are de- signed to operate with Puron. Puron refrigerant cylinders are rose colored. • Puron refrigerant cylinders manufactured prior to March 1, 1999, have a dip tube that allows liquid to flow out of cylinder in upright position. Cylinders manufactured March 1, 1999 and later DO NOT have a dip tube and MUST be positioned upside down to allow liquid to flow.
- Page 26 TABLE 7—TROUBLESHOOTING CHART SYMPTOM CAUSE REMEDY Power Failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective thermostat, contactor, transformer, control relay, defrost board, or high pressure or loss- Replace component of-charge/low pressure switch Compressor and outdoor fan Insufficient line voltage Determine cause and correct...
- Page 27 START-UP CHECKLIST (REMOVE AND STORE IN JOB FILE) I. PRELIMINARY INFORMATION Model No ................................Serial No ................................Date ..................................Technician ................................II. PRE-START-UP ____ Verify that all packing materials have been removed from unit ____ Remove all shipping holddown bolts and brackets per installation instructions ____ Make sure that –...
- Page 28 © 2001 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —28— Printed in U.S.A. 602b Catalog No. 5360-205...