Bryant R-22 service manual Table Of Contents, Safety Considerations

Application Guide and Service Manual

AIR CONDITIONERS AND HEAT PUMPS USING R-22 REFRIGERANT

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
INSTALLATION GUIDELINE	2
Residential New Construction	2
Add-On Replacement (Retrofit)	2
Seacoast (For Air Conditioners Only)	2
ACCESSORY DESCRIPTIONS	2
Compressor Crankcase Heater	2
Evaporator Freeze Thermostat	2
Winter Start Control	2
Compressor Start Assist—PTC	2
Compressor Start Assist Capacitor/Relay	2
Low-Ambient Controller	2
MotorMaster™ Control	2
Low-Ambient Pressure Switch	2
Wind Baffle	3
Coastal Filter	3
Support Feet	3
Liquid-Line Solenoid Valve	3
Thermostatic-Expansion Valve	3
Isolation Relay	3
LOW-AMBIENT GUIDELINE	3
LONG-LINE GUIDELINE	3
Approved Systems	3
Interconnecting Tubing Sizing	3
Metering Device Sizing	6
Liquid-Line Solenoid And Tubing Configuration	7
Charging Information	8
2–Speed Applications	8
UNIT IDENTIFICATION	8
Product Number Stamped on Unit-Rating Plate	8
Serial Number Identification	9
CABINET	10
Remove Top Cover—Before 1/1/92	10
Remove Fan-Motor Assembly—Before 1/1/92	10
Information Plate—Reliant Products	10
Control-Box Cover—Cube Products	10
Remove Top Cover— After 1/1/92	10
Remove Fan-Motor Assembly—After 1/1/92	11
ELECTRICAL	12
Aluminum Wire	12
Contactors	13
Capacitors	14
Cycle Protector	15
Crankcase Heater	16
Time-Delay Relay	16
Pressure Switches	17
Defrost Thermostats	18
Defrost-Control Board	18

—1—

Cancels: AP01-3, SM01,02-4	SM01,02-5
		10-00
Fan Motors		21
Service Alarm Control Board		21
Outdoor Thermostat(s)		22
Compressor Plug		24
Low-Voltage Terminals		25
RECIPROCATING COMPRESSOR		25
Mechanical Failures		25
Electrical Failures		26
System Cleanup After Burnout		27
Compressor Removal And Replacement		27
COPELAND SCROLL COMPRESSOR		28
Features		28
Troubleshooting		28
Discharge Thermostat		28
Discharge Solenoid Valve		28
MILLENNIUM SCROLL COMPRESSOR		29
Features		29
Compressor Protection		29
Troubleshooting		29
Scroll Compressor, 3–Phase Monitor		29
TWO-SPEED SYSTEM		29
Cautions and Warnings		29
System Functions		29
Factory Defaults		33
Major Components		33
LED Function/Malfunction Lights		34
Troubleshooting		34
REFRIGERATION SYSTEM		35
Refrigeration Cycle		35
Leak Detection		35
Brazing		37
Service Valves		38
Check-Flo-Rater™ (Bypass-Type) Heat Pumps Only		...........39
Reversing Valve		39
Thermostatic-Expansion Valves (TXV)		40
Thermostatic-Expansion Valve (Bi-Flow TXV)		41
Coil Removal		41
Liquid-Line Strainer (Heat Pumps Only)		41
Accumulator		43
Contaminant Removal		43
System Charging		43
Checking Charge		43
CARE AND MAINTENANCE		45

SAFETY CONSIDERATIONS

Service and repair of these units should be attempted only by trained service technicians familiar with Bryant standard service instructions and training manual.

All equipment should be installed in accordance with accepted practices and unit Installation Instructions, and in compliance with all national and local codes.

Power should be turned off when servicing or repairing electrical components. Extreme caution should be observed when trouble- shooting electrical components with power on. Observe all warn- ing notices posted on equipment.