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38CKC(Q), 38CMC, 38BRC
Split-System Air Conditioner
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Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Improperinstallation,adjustment,alteration,service,maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information o
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NOTE: Avoid contact between tubing and structure OUTDOOR WALL INDOOR WALL C CAULK LIQUID TUBE VAPOR TUBE INSULATION THROUGH THE WALL 3 ⁄ ″D. (9.53) TIEDOWN
8 JOIST KNOCKOUTS (2) PLACES A HANGER STRAP
(AROUND VAPOR
B INSULATION TUBE ONLY) VAPOR TUBE A94199 TIEDOWN KNOCKOUT LOCATIONS MIN PAD UNIT SIZE DIM (IN.) A B C (In.) (In.) (In.) 38CKC(Q)018, 024 18 X 18 3 15 10-3/16 1″ MIN. 38CKC(Q)030-042 LIQUID TUBE 22-1/2 X 22-1/2 3-11/16 18-1/8 14-3/8 38CMC018-030 SUSPENSION 38BRC024-060 38CKC(Q)0
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AIR DISCHARGE If undersized, damaged, or elliptically shaped tubing is used when making connection, leaks could result. 3. Slide lock nut and ferrule onto each tube. (See Fig. 6.) FIELD POWER
FERRULE LOCK NUT SUPPLY CONN
7 ⁄ ″ DIA HOLE WITH
8 1 1 ⁄ ″ DIA KNOCKOUT
8 3 AND 1 ⁄ ″ DIA
8 KNOCKOUT FIELD CONTROL
SUPPLY CONN
7 ⁄ ″ DIA HOLE
8 SUCTION LINE CONN
TUBING LIQUID LINE CONN A97009 A92121 LIQUID TUBE VAPOR TUBE Fig. 6—Lock Nut/Ferrule Positioning (38CKQ) UNIT SIZE Conn Dia Tube Dia
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5. Wire solenoid coil into system control circuit. LOCK NUT Step 8—Make Electrical Connections Toavoidpersonalinjuryordeath,donotsupplypowertounit with compressor terminal box cover removed. Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown onunitratingplate.Contactlocalpowercompanyforcorrectionof improper voltage. See unit rating plate for recommended circuit TUBING protection device. NOTE: Operation of unit on
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NOTE: Use of available 24-v accessories may exceed the mini- mum 40-va power requirement. Determine total transformer load- Donotventrefrigeranttoatmosphere.Recoverduringsystem ing and increase the transformer capacity or split the load with an repair or final unit disposal. accessory transformer as required. Step 9—Compressor Crankcase Heater Follow these steps to properly pumpdown a system and avoid Whenequippedwithacrankcaseheater,furnishpowertoheatera negative suction pressure. minimumof24hr
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CORPORATE NON-PROGRAMMABLE CORPORATE FA, FB, FC, THERMOSTAT FD, FF AIR NON-PROGRAMMABLE MODEL AC FAN COIL CONDITIONER THERMOSTAT SINGLE AIR STAGE 24 VAC HOT R R MODEL AC CONDITIONER FURNACE R 24 VAC HOT R 24 VAC COM C C SEE C 24 VAC COM C C NOTE 2 HEAT STAGE 1 W/W1 W2 SEE W/W1 C NOTE 2 HEAT STAGE 1 W/W1 COOL STAGE 1 Y/Y2 COOL STAGE 1 Y/Y2 Y/Y2 G INDOOR FAN G INDOOR FAN G G A94385 A94384 CORPORATE PROGRAMMABLE CORPORATE FA, FB, FC, THERMOSTAT PROGRAMMABLE FD, FF AIR SINGLE MODEL AC THERMOSTAT CON
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CORPORATE PROGRAMMABLE CORPORATE THERMOSTAT FK4B AIR NON-PROGRAMMABLE MODEL AC FAN COIL CONDITIONER THERMOSTAT FK4B AIR MODEL AC FAN COIL CONDITIONER R R 24 VAC HOT 24 VAC HOT R R G G INDOOR FAN 24 VAC COM C C HEAT STAGE 1 W/W1 W2 SEE C NOTE 2 HEAT STAGE 1 W/W1 W2 COOL STAGE 1 Y/Y2 Y/Y2 COOL STAGE 1 Y/Y2 Y/Y2 SEE NOT USED O/W2 NOTE 2 O C INDOOR FAN G G Y1/W2 NOT USED Y1 W3 W3 O 24 VAC COM C C NOT USED B E Y1 NOT USED L L E OPTIONAL S1 L OUTDOOR SENSOR S2 A94388 CONNECTION A94389 NON-CORPORATE NO
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NON-CORPORATE NON-PROGRAMMABLE NON-CORPORATE FA, FB, FC, THERMOSTAT NON-PROGRAMMABLE FD, FF AIR MODEL AC FAN COIL CONDITIONER THERMOSTAT SINGLE AIR STAGE MODEL AC CONDITIONER FURNACE 24 VAC HOT R R R R 24 VAC HOT C C SEE C NOTE 2 HEAT STAGE 1 W W2 SEE W/W1 C NOTE 2 HEAT STAGE 1 W COOL STAGE 1 Y COOL STAGE 1 Y/Y2 Y G INDOOR FAN G INDOOR FAN G G A95282 A95283 NOTES: 1. CORPORATE THERMOSTAT WIRING DIAGRAMS ARE ONLY ACCURATE FOR MODEL NUMBERS BEGINNING WITH TSTAT _ _ _ _ _ _ _ 2. WIRING MUST CONFORM
