Carrier Weathermaster 38HQ Installation, Start-up And Service Instructions Manual

Number OneArConditbningMakerr^rrie^Division of^1^ Carrier Corporationf—--'twWeathermaster III Dual-CompressorHeat Pump(Outdoor Coil Section; Indoor Compressor Section)INDEXPageSAFETY CONSIDERATIONS .1INSTALLATION.3Step 1 — Check Equipment and Jobsite . 3• UNPACKAGE UNITS• INSPECT EQUIPMENT• COMPLETE OR CONSIDER SYSTEMREQUIREMENTSStep 2 — install Outdoor CoilSection.4• ON THE GROUND• ON THE ROOFStep 3 — Install Indoor CompressorSection.5Step 4 — install Indoor Fan-Coil andElectric Heater.5Step 5 — Make Piping Connections.5• REPLACE THE ACCURATER^^REFRIGERANT CONTROL PISTON(S)• CONNECT REFRIGERANT LINESStep 6 — Install Fan Control Package ... 6PageStep 7 — Install Outdoor AmbientSwitch.6Step 8 — Install Room Thermostat,Outdoor Thermostat(s) andEmergency Heat Relay. 8Step 9 — Make Electrical Connections ... 8• INSTALL A BRANCH CIRCUITDISCONNECT PER N.E.C.• ROUTE LINE POWER LEADS INTOCOMPRESSOR SECTION• CONNECT GROUND LEADS ANDPOWER WIRES• CONNECT POWER LEADS FROMINDOOR COMPRESSOR SECTIONTO OUTDOOR COIL SECTION• CONNECTCONTROL WIRINGINITIAL START-UP.9SEQUENCE OF OPERATION. 9SERVICE. 11MAINTENANCE . 15SAFETY CONSIDERATIONSInstallation and servicing of air conditioningequipment can be hazardous due to system pressureand electrical components. Only trained and quali¬fied service personnel should install, repair orservice air conditioning equipment.Untrained personnel can perform basic mainten¬ance functions of cleaning coils and filters and re¬placing filters. All other operations should be per¬formed by trained service personnel. When workingon air conditioning equipment, observe precautionsin the literature, tags and labels attached to the unitand other safety precautions that may apply.Follow all safety codes. Wear safety glasses andwork gloves. Use quenching cloth for brazing opera¬tions, Have fire extinguisher available for all brazingoperations.WARNING: Before perforisaisag; servsoe oroa tant: OSS'ijsain SEWstchfes mdoor tnataad otJt^ooraxat ITarn accessory heater power if 'shod: cooSd cause per-© Carrier Corporation 1979 Form 38HQ-6SI