Carrier 38YSA manual

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A good user manual

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- informations concerning technical data of Carrier 38YSA
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Table of contents for the manual

  • Page 1

    38YSA Split-System Heat Pump Installation and Start-Up Instructions NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. SAFETY CONSIDERATIONS Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or othe[...]

  • Page 2

    INSPECT EQUIPMENT File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications. Step 2 — Install on a Solid, Level Mounting Pad If conditions or local[...]

  • Page 3

    Step 6 — Thermostatic Expansion Valve For proper unit operation and reliability, units must be installed with field-supplied hard shutoff TXV. Do not install with evaporator coils having capillary tube metering devices or pistons. Due to system design, this unit must be installed with a factory-listed indoor section. Non-approved coils could caus[...]

  • Page 4

    For buried-line applications greater than 36 in., consult your local distributor. If refrigerant tubes or indoor coil are exposed to atmosphere, they must be evacuated to 500 microns to eliminate contamination and moisture in the system. OUTDOOR UNIT CONNECTED TO FACTORY-APPROVED INDOOR UNIT Outdoor unit contains correct system refrigerant charge f[...]

  • Page 5

    The unit cabinet must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes. Failure to follow this warning can result in an electric shock, fire, or death. CONNECT GROUND AND POW[...]

  • Page 6

    Fig. 9 — Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Fan Coils and No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats A97536 24 VAC HOT R G W/W1 Y/Y2 O/W2 R W3 W2 RVS COOLING C B S1 S2 W2 CARRIER PROGRAMMABLE THERMOSTAT MODEL HP TWO OUTDOOR THERMOSTATS FA, FB, FC, FD, FF, FH FAN COIL HEAT PUMP G Y1/W[...]

  • Page 7

    Fig. 10 — Typical 24-v Circuit Connections using Other HP Thermostats with Fan Coils and No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats A97404 24 VAC HOT R C W2 Y G R W3 W2 G RVS COOLING E W2 OTHER HP THERMOSTAT TWO OUTDOOR THERMOSTATS FA, FB, FC, FD, FF, FH FAN COIL HEAT PUMP C O R C O INDOOR FAN HEAT STAGE 2 COOL/HEAT STA[...]

  • Page 8

    Fig. 11 — Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Smart Heat and No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats and Carrier Model 2S Thermostat with FK4C Fan Coil and Intelligent Staging A97543 24 VAC HOT R G W/W1 Y/Y2 O/W2 RVS COOLING C B S1 S2 SUPPLEMENTAL HEATING RELAY CARRIER PROGRAMMABLE[...]

  • Page 9

    Fig. 12 — Typical 24-v Circuit Connections using Other HP Thermostats with Smart Heat and No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats A97412 24 VAC HOT R C Y G O RVS COOLING W2 OTHER HP THERMOSTAT HEAT PUMP E R C Y G O W2T W3 W2D Y 0 R C O W2 Y INDOOR FAN EMERGENCY HEAT COOL/HEAT STAGE 1 24 VAC COM HEAT STAGE 2 CUT JW1 S[...]

  • Page 10

    WIRING DIAGRAM NOTES: 1. CARRIER THERMOSTAT WIRING DIAGRAMS ARE ONLY ACCU- RATE FOR MODEL NUMBERS BEGINNING WITH TSTA T_____ __ . 2. WIRING MUST CONFORM TO NEC OR LOCAL CODES. 3. SOME UNITS ARE EQUIPPED WITH PRESSURE SWITCH(ES), TEM- PERATURE SWITCH, OR 5-MINUTE COMPRESSOR CYCLE PRO- TECTION. CONNECT 24-V FIELD WIRING TO FACTORY- PROVIDED STRIPPED [...]

  • Page 11

    providing electrical potential to second heater sequencer (if used). If outdoor temperature falls below setting of outdoor thermostat (field-installed option), contacts close to complete circuit and bring on second bank of supplemental electric heat. When thermostat is satisfied, its contacts open, de-energizing contactor and sequencer. All heaters[...]

  • Page 12

    Step 14 — Final Checks IMPORTANT: Before leaving job, be sure to do the following: 1. Securely fasten all panels and covers. 2. Tighten service valve stem caps to 1/12-turn past finger tight. 3. Leave User ’ s Manual with owner. Explain system operation and periodic maintenance requirements outlined in manual. 4. Fill out Dealer Installation Ch[...]