Carrier 38CKC(Q) manual

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Table of contents for the manual

  • Page 1

    38CKC(Q), 38CMC, 38BRC Split-System Air Conditioner Installation and Start-Up Instructions NOTE: Read the entire instruction manual before starting the installation. SAFETY CONSIDERATIONS Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death[...]

  • Page 2

    Step 3—Clearance Requirements When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Common clearances are 6 in. on 1 side, 12 in. on 2 sides, and 30 in. on service side of unit. Allow 24 in. between units. Discharge air must be unobstructed and must not recirculate. Position so water, snow, or ice[...]

  • Page 3

    4. After wrapping service valve with a wet cloth, tubing set can be brazed to service valve using either silver bearing or non-silver bearing brazing material. 5. Refrigerant tubing and indoor coil are now read for leak testing. This check should include all field and factory joints. MECHANICAL CONNECTION (38CKQ MODELS) 1. Cut tubing to correct len[...]

  • Page 4

    Wiring must comply with local codes and NEC requirements, if a field-supplied control power source is needed when adding solenoid. 1. Remove coil liquid connection cap and discard. 2. Mount solenoid valve on liquid tube, making sure valve flow arrow points toward indoor coil. Mount valve in any position except valve body at top and electric coil at[...]

  • Page 5

    NOTE: Use of available 24-v accessories may exceed the mini- mum 40-va power requirement. Determine total transformer load- ing and increase the transformer capacity or split the load with an accessory transformer as required. Step 9—Compressor Crankcase Heater When equipped with a crankcase heater, furnish power to heater a minimum of 24 hr befo[...]

  • Page 6

    Fig. 10—Typical 24-v Circuit Connections A94386 C G R C O/W2 Y/Y2 W/W1 G R 24 VAC HOT INDOOR FAN HEAT STAGE 1 COOL STAGE 1 NOT USED NOT USED CORPORATE PROGRAM MABLE THERMOSTAT MODEL AC SEE NOTE 2 24 VAC COM NOT USED NOT USED OPTIONAL OUTDOOR SENSOR CONNECTION Y1/W2 S2 S1 L B C AIR CONDITIONER SINGLE STAGE FURNACE Y/Y2 W/W1 A94384 G W/W1 C R C G Y[...]

  • Page 7

    Fig. 10—Typical 24-v Circuit Connections (Continued) A95281 G Y/Y2 W2 C R FAN COIL FK4B C G W R 24 VAC HOT HEAT STAGE 1 COOL STAGE 1 INDOOR FAN NON-CORPORATE NON-PROGRAMMABLE THERMOSTAT MODEL AC AIR CONDITIONER SEE NOTE 2 L E W3 O Y1 Y A94388 G Y/Y2 W2 C R FAN COIL FK4B C G W/W1 C R 24 VAC HOT 24 VAC COM HEAT STAGE 1 COOL STAGE 1 INDOOR FAN CORPO[...]

  • Page 8

    A95282 G W2 C R FAN COIL C G Y W R 24 VAC HOT HEAT STAGE 1 COOL STAGE 1 INDOOR FAN AIR CONDITIONER SEE NOTE 2 FA, FB, FC, FD, FF NON-CORPORATE NON-PROGRAMMABLE THERMOSTAT MODEL AC A95283 G W/W1 C R C G Y W R 24 VAC HOT HEAT STAGE 1 COOL STAGE 1 INDOOR FAN NON-CORPORATE NON-PROGRAMMABLE THERMOSTAT MODEL AC AIR CONDITIONER SEE NOTE 2 Y/Y2 SINGLE STAG[...]