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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 02-40QA0007-SI

Printed in U.S.A.

Form 40QA-7SI

Pg CL-2              706       3-06     Replaces: 40QA-5SI

Copyright 2006 Carrier Corporation

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Book 1 4
Tab

3d 2c

START-UP CHECKLIST (cont)

HAS PIPING SYSTEM BEEN EVACUATED TO 1000 MICRONS (IF REQUIRED)? ____________
HAS SYSTEM CHARGE BEEN WEIGHED IN (IF REQUIRED)? ____________
HAVE SERVICE VALVES BEEN FULLY BACKSEATED? ____________
CHECK VOLTAGE: IS VOLTAGE WITHIN RANGE SHOWN FOR UNIT (WITH UNIT OPERATING)?

OUTDOOR ____________

INDOOR ____________

IV. START-UP

IF UNIT HAS A CRANKCASE HEATER, HAS IT BEEN ON FOR 24 HOURS? ____________
MEASURE AND RECORD THE:

AIR ENTERING OUTDOOR UNIT: ____________ F
AIR ENTERING INDOOR UNIT: ____________ F
DISCHARGE LINE TEMPERATURE: ____________ F
VAPOR LINE TEMPERATURE: ____________ F

MEASURE AND RECORD THE:

VAPOR LINE PRESSURE: ____________ PSIG
DISCHARGE PRESSURE: ____________ PSIG

START-UP CHECKLIST

I. PRELIMINARY INFORMATION

OUTDOOR UNIT: MODEL NO.

SERIAL NO.

INDOOR UNIT: MODEL NO.

SERIAL NO.

ACCESSORIES: __________________________________________________________________________________

PISTONS (38HDC and 38QRC SYSTEMS ONLY): INDOOR SIZE: OUTDOOR SIZE 
(38QRC SYSTEMS ONLY):
REFRIGERANT PIPING: EQUIVALENT LINE LENGTH:

(IF OVER 50 FT)*

LIFT: FAN COIL ABOVE OUTDOOR UNIT (IF OVER 25 FT)*?

FAN COIL BELOW OUTDOOR UNIT (IF OVER 25 FT)*?

*APPLIES ONLY TO 38HDC AND 38QRC UNITS USING LONG-LINES APPLICATIONS. MAXIMUM EQUIVALENT

LINE LENGTH FOR 38HDS SYSTEMS IS 50 FT. MAXIMUM LIFT ON 38HDS APPLICATIONS IS 30 FT FROM LOW-
EST SYSTEM POINT TO HIGHEST SYSTEM POINT.

PRE-START-UP

INDOOR UNIT (REFER TO OUTDOOR UNIT INSTALLATION INSTRUCTIONS FOR OUTDOOR UNIT PRE-START-UP 
FUNCTIONS)
IS THERE ANY SHIPPING DAMAGE?
IF YES, WHERE?
WILL THIS DAMAGE PREVENT UNIT START-UP?
IS POWER SUPPLY CORRECT?

(115-V FOR 40QAB024-048, 115 V UNITS; OR 208/230 V FOR 40QAB024-

048, 208/230 V UNITS AND ALL 40QAB060 AND 40QAE024-060 UNITS. ALL SYSTEMS REQUIRE SINGLE-PHASE 
POWER)
HAS GROUND WIRE BEEN CONNECTED?
HAS THE CORRECT SIZE FUSE OR HACR BREAKER BEEN PROVIDED? ARE POWER WIRES

TO THE UNIT SIZED AND INSTALLED PROPERLY? IS THE DISCONNECT SWITCH IN-

STALLED IN SIGHT FROM THE UNIT?

IS THE LOW-VOLTAGE CABLE (INDOOR TO OUTDOOR UNIT) RUN AND CONNECTED PROPERLY?

Summary of Contents for 40QA024-060

Page 1: ...PERATE FRESH AIR INSTALLATION OPTION 20 Ventilation Air Accessory 20 TROUBLESHOOTING 20 START UP CHECKLIST CL1 CL 2 SAFETY CONSIDERATIONS Installing and servicing air conditioning equipment can be haz...

Page 2: ...field supplied for connection of the indoor and outdoor units refrigerant piping condensate drain piping thermostat power and control wiring For some applications a fresh air intake power vent fan and...

Page 3: ...CITY tons 11 2 2 3 3 4 5 NOMINAL SIZE Btuh 18 000 24 000 30 000 36 000 48 000 60 000 OPERATING WEIGHT lb 108 108 117 117 149 179 MOISTURE REMOVAL WEIGHT Pints Hr 4 0 7 3 6 0 9 0 13 0 14 5 FINISH GM Mo...

Page 4: ...3 4 5 NOMINAL SIZE Btuh 18 000 24 000 30 000 36 000 48 000 60 000 OPERATING WEIGHT lb 110 110 119 119 151 181 MOISTURE REMOVAL WEIGHT Pints Hr 4 0 7 3 6 0 9 0 13 0 14 5 FINISH GM Motorhome White with...

Page 5: ...119 4 1013 16 1493 4 57 8 1368 4 91 2 1459 2 11 2 648 048 149 151 5 119 16 1817 5 65 8 1692 5 101 4 1783 1 97 8 555 3 31 16 992 060 179 181 7 8 2336 7 3 2211 7 65 8 2302 1 115 8 601 4 119 16 1512 NOT...

Page 6: ...T CONCRETE SLAB Install hang ing bolts with expansion anchor TO MOUNT UNIT 1 Remove mounting bracket and reinstall the 2 hex head bolts factory supplied into each side of indoor unit as shown in Fig 6...

Page 7: ...een the structure and the unit to absorb vibrations d A piston is shipped in the factory installed meter ing device body Fig 13 with the indoor unit Use Tables 4A 4C to verify that you have the requir...

Page 8: ...pipe with nylon wire tie passing through hole Fig 15 NOTE Do not fasten nylon wire ties tight enough to deform the insulation as this affects its performance 5 Insulate condensate drain line s that a...

Page 9: ...Fig 11 Hanging Fan Coil Unit Field supplied Fig 12 Routing Wires Over Piping NOTE Teflon Seal must face toward the outdoor heat pump unit Fig 13 AccuRater Metering Device at Service Valve Bypass Type...

Page 10: ...lectrical data is the same for both the 24 000 Btuh 024 unit and the 024 unit that has been field reconfigured for 18 000 Btuh Refer to Before Installation section on page 3 for reconfiguration detail...

Page 11: ...ues 2 All wiring must comply with the applicable local and national codes 3 Liquid line need not be insulated cooling only units 4 Wiring and piping shown are general points of connection guides only...

Page 12: ...mostat Operating Instructions Mount thermostat to a wall in the occupied space using 2 field supplied screws Locate the thermostat in an area that is not subjected to drafts or direct sunlight through...

Page 13: ...nections must be made to the outdoor unit for it to operate as a system with the indoor unit Route 5 wires of field supplied 18 gage AWG thermostat cable between the low voltage terminal block of the...

Page 14: ...FLAT THERMOSTAT FLATSTAT CARRIER COOLING ONLY HEAT COOL 53DFS250 FS SLIMLINE THERMOSTAT CARRIER HEAT PUMP COOLING ONLY HEAT COOL 53DFS250 SL 5 1 1 PROGRAMMABLE THERMOSTAT CARRIER COOLING ONLY HEAT CO...

Page 15: ...te as a sys tem with the indoor unit Route 2 wires of field supplied 18 gage AWG American Wire Gage thermostat cable between the low voltage terminal block of the fan coil unit and the blue and brown...

Page 16: ...16 Fig 20 Cooling System Wiring Diagram...

Page 17: ...17 Fig 21 Heat Pump Wiring Diagram...

Page 18: ...gh speed and the unit is equipped with the power ventilation kit the ventilation fan will operate to provide fresh air COOLING MODE OPERATION When the room ther mostat senses a demand for cooling the...

Page 19: ...Maintenance procedures for the outdoor units are in the individual unit installation instructions To avoid the possibility of electric shock before performing any cleaning and maintenance operations...

Page 20: ...Mode button until either COOL or HEAT is dis played as desired 4 Adjust thermostat set point to desired room tempera ture If system starts within a few minutes service may not be necessary If system...

Page 21: ...t Cool Properly Air filter s in indoor unit is dirty or needs to be replaced Clean or replace air filter s Temperature is set too high or too low Reset temperature to desired comfort setting using the...

Page 22: ...ent discussed in this manual including Unit Familiarization Maintenance Installation Overview Operating Sequence A large selection of product theory and skills programs are available using popular vid...

Page 23: ...CR BREAKER BEEN PROVIDED ____________ ARE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY ____________ IS THE DISCONNECT SWITCH INSTALLED WITHIN SIGHT OF THE UNIT ____________ IS THE LOW VOLTAGE...

Page 24: ...ATION OUTDOOR UNIT MODEL NO SERIAL NO INDOOR UNIT MODEL NO SERIAL NO ACCESSORIES __________________________________________________________________________________ PISTONS 38HDC and 38QRC SYSTEMS ONLY...

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