Bryant 581J-17-28, Service And Maintenance Instructions

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581J-17-28
Gas Heat Rooftop Package
Nominal 15 to 25 Tons
With Puron ® (R-410A) Refrigerant
Service and Maintenance Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 1 . . . . . . . . . . . . . . . . . . . .
UNIT ARRANGEMENT AND ACCESS 3 . . . . . . . . . . . .
SUPPLY FAN (BLOWER) SECTION 4 . . . . . . . . . . . . . .
2 − SPEED INDOOR FAN MOTOR SYSTEM WITH
VARIABLE FREQUENCY DRIVE (VFD) 6 . . .
ADDITIONAL VFD INSTALLATION AND
TROUBLESHOOTING 6 . . . . . . . . . . . . . . . . . .
CONDENSER COIL SERVICE 8 . . . . . . . . . . . . . . . . . . .
EVAPORATOR COILS 9 . . . . . . . . . . . . . . . . . . . . . . . . . .
PERFECT HUMIDITY ™
DEHUMIDIFICATION SYSTEM 11 . . . . . . . . .
THERMOSTATIC EXPANSION VALVE (TXV) 16 . . . . .
PURON (R − 410A) REFRIGERANT 18 . . . . . . . . . . . . .
COOLING CHARGING CHARTS 19 . . . . . . . . . . . . . . . .
COOLING CHARGING CHARTS (CONT.) 20 . . . . . . . .
COOLING CHARGING CHARTS (CONT.) 21 . . . . . . . .
COMPRESSORS 23
TROUBLESHOOTING THE COOLING SYSTEM 25 . .
CONVENIENCE OUTLETS 26 . . . . . . . . . . . . . . . . . . . .
SMOKE DETECTORS 27 . . . . . . . . . . . . . . . . . . . . . . . . .
INDICATORS 33 .
PROTECTIVE DEVICES 34 . . . . . . . . . . . . . . . . . . . . . . .
RTU − OPEN CONTROL SYSTEM 35 . . . . . . . . . . . . . . . .
GAS HEATING SYSTEM 37 . . . . . . . . . . . . . . . . . . . . . . .
ECONOMI$ER SYSTEMS 47 . . . . . . . . . . . . . . . . . . . . . .
PRE − START − UP/START − UP 55 . . . . . . . . . . . . . . . . . . . .
START − UP, GENERAL 56 . . . . . . . . . . . . . . . . . . . . . . . .
START − UP, RTU − OPEN CONTROLS 58 . . . . . . . . . . . . .
FASTENER TORQUE VALUES 58 . . . . . . . . . . . . . . . . .
APPENDIX I. MODEL NUMBER
NOMENCLATURE 59 . . . . . . . . . . . . . . . . . . . . .
APPENDIX II. PHYSICAL DATA 60 . . . . . . . . . . . . . . . .
APPENDIX III. FAN PERFORMANCE 66 . . . . . . . . . . . .
APPENDIX IV. WIRING DIAGRAMS 71 . . . . . . . . . . . .
APPENDIX V. MOTORMASTER SENSOR
LOCATIONS 82 . . . . . . . . . . . . . . . . . . . . . . . . . .
UNIT START-UP CHECKLIST 83 . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical
components. Only trained and qualified service personnel
should install, repair, or service air-conditioning
equipment. Untrained personnel can perform the basic
maintenance functions of replacing filters. Trained service
personnel should perform all other operations.
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.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations.
Have fire extinguishers available for all brazing
operations.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have
fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and National
Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety − alert
symbol . When you see this symbol on the unit and in
instructions or manuals, be aware of the potential for
physical injury hazards
.
Understand the signal words DANGER , WARNING , and
CAUTION . These words are used with the safety − alert
symbol.
DANGER
identifies a hazardous situation which,
if not avoided, will result in death or severe personal
injury. WARNING indicates a hazardous situation which,
if not avoided,
could
result in death or personal injury.
CAUTION indicates a hazardous situation which, if not
avoided,
could
result in minor to moderate injury or
product and property damage. NOTICE is used to address
practices not related to physical injury. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.