Carrier 38AUQ 07-12 Series Installation, Start-up And Service Instructions Manual

Carrier 38AUQ 07-12 Series Installation, Start-up And Service Instructions Manual Manual pdf 1 page image

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53380047-01 Printed in U.S.A. Form 38AUQ-7-12-04SI Pg 1 1-23 Replaces: 38AUQ-7-12-03SIInstallation, Start-Up and Service InstructionsCONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2INSTALLATION GUIDELINE . . . . . . . . . . . . . . . . . . . . 2Replacement /Retrofit — R-22 to Puron Refrigerant . . 2• ACID TEST• EVALUATE EXISTING REFRIGERANT PIPING• INSTALLATIONINSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . 7Step 2 — Complete Pre-Installation Checks . . . . . . . 7• CHECK UNIT ELECTRIC CHARACTERISTIC• UNCRATE UNIT• INSPECT SHIPMENT• CONSIDER SYSTEM REQUIREMENTSStep 3 — Prepare Unit Mounting Support . . . . . . . . 8• SLAB MOUNTStep 4 — Rig and Mount the Unit . . . . . . . . . . . . . . . 8• RIGGINGStep 5 — Complete Refrigerant Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Check Vertical Separation . . . . . . . . . . . . . . . . . . . . . 9Provide Safety Relief . . . . . . . . . . . . . . . . . . . . . . . . . 9Refrigerant Line Sizing . . . . . . . . . . . . . . . . . . . . . . . . 9Risers in Heat Pump Piping Systems . . . . . . . . . . . . 9• LIQUID LINE RISER• VAPOR LINE RISERInstall Filter Drier and Moisture Indicator . . . . . . . . . 9Install Liquid Line Solenoid Valves . . . . . . . . . . . . . 10Make Piping Connections . . . . . . . . . . . . . . . . . . . . 10Evacuation/Dehydration . . . . . . . . . . . . . . . . . . . . . . 10Preliminary Charge . . . . . . . . . . . . . . . . . . . . . . . . . . 11Step 6 — Install Accessories . . . . . . . . . . . . . . . . . . 11Step 7 — Complete Electrical Connections . . . . . . 11• FIELD POWER SUPPLY• UNITS WITHOUT FACTORY-INSTALLEDDISCONNECT• UNITS WITH FACTORY-INSTALLED DISCONNECT• ALL UNITS• VOLTAGE AND CURRENT BALANCEConvenience Outlets . . . . . . . . . . . . . . . . . . . . . . . . 12Installing Weatherproof Cover . . . . . . . . . . . . . . . . . 13• FIELD CONTROL WIRING• THERMOSTAT• EXTERNAL CONTROL DEVICESStep 8 — Wind Baffles for Low Ambient Control . . 16PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16Turn On Crankcase Heater . . . . . . . . . . . . . . . . . . . .16Preliminary Charge . . . . . . . . . . . . . . . . . . . . . . . . . .16START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1638AUQ Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16• PRELIMINARY CHECKS• COMPRESSOR ROTATION• COMPRESSOR OVERLOAD• ADVANCED SCROLL TEMPERATURE PROTECTION(ASTP)• START UNIT• ADJUST REFRIGERANT CHARGE• FINAL CHECKSOPERATING SEQUENCE . . . . . . . . . . . . . . . . . . . . .20Base Unit Controls . . . . . . . . . . . . . . . . . . . . . . . . . . .20• INDOOR (SUPPLY) FAN• COOLING, UNIT WITHOUT ECONOMIZER —TWO-STAGE UNITS• FAN CYCLING• COOLING, UNIT WITH ECONOMIZER• HEATING• DEFROST CYCLE• SUPPLEMENTAL HEAT/EMERGENCY HEAT• COOLING AND HEATING SHUTDOWNROUTINE SYSTEM MAINTENANCE . . . . . . . . . . . . .22Quarterly Inspection (and 30 days after initial start) . . . . . . . . . . . . . . .22• INDOOR SECTION• OUTDOOR SECTION• ECONOMIZER OR OUTSIDE AIR DAMPERMAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22Quarterly Inspection (and 30 days after initial start) . . . . . . . . . . . . . . .22• INDOOR SECTIONSeasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . .22• AIR CONDITIONINGSERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . .23• COMPRESSOR OIL• SERVICING SYSTEMS ON ROOFS WITHSYNTHETIC MATERIALS• LIQUID LINE FILTER DRIER• FIELD REFRIGERANT ACCESS PORTS• OUTDOOR COIL METERING DEVICES• REFRIGERANT SYSTEM PRESSURE ACCESS PORTSCompressor Protection . . . . . . . . . . . . . . . . . . . . . . .26• COMPRESSOR OVERCURRENT• COMPRESSOR OVERTEMPERATURE PROTECTION(IP)• CRANKCASE HEATER• HIGH PRESSURE SWITCH• LOSS OF CHARGE SWITCH• OUTDOOR FAN MOTOR PROTECTION• CONTROL CIRCUIT, 24-V38AUQ*07-12Heat Pump Condensing Unitswith Puron ® Refrigerant