Carrier 42qg24-h Manual

							 
0 
-  2009  
						

							 
 
 
 
 
 
 
 
 
 
Thank you for selecting Carrier 
Air Conditioner 
 
 
You can be justifiably of your purchase because the same pride in 
craftsmanship and engineering know-how that goes into Carrier 
equipment worldwide have been built into your unit. 
One of the pleasant benefits awaiting you with room air 
conditioning is that in addition to being cooled, the room air is 
filtered and dehumidified. 
 
This installation manual contains all installation, Service and 
maintenance operation  
 
• Installation and servicing of conditioning equipment can be 
hazardous due to system pressures and electrical 
components. Only trained and qualified service personnel 
should install. Repair or service the air conditioning 
equipment . 
 
• When working on air conditioning equipment, observe 
precautions in the literature, tags and labels attached to the 
unit and other safety codes. 
  
  
						

							 
 
TABLE OF CONTENTS
 
                                                                               PAGE NO. 
1. GENERAL NOTES TO INSTALLER 1 
2. MODELS  2 
3. OPERATING LIMITS 2 
4.  DIMENSIONS, WEIGHTS AND MINIMUM CLEARANCES  3 
5. PRECAUTIONS BEFORE INSTALLATION 5 
6. SPLIT SYSTEM DESCRIPTION  8 
7. INSTALLTION ACCESSORIES 9 
8. INSTALLATION CHART 11 
9. SELECTING INSTALLATION LOCATION FOR INDOOR UNIT 12 
10. SELECTING INSTALLATION LOCATION FOR OUTDOOR UNIT  
 10-1 INSTALLATION LOCATIONS 15 
  10-2 CONSIDERATIONS FOR SELECTING INSTALLATION LOCATIONS  15 
11. INSTALLATION LOCATION – CHECK LIST 17 
12. INDOOR UNIT INSTALLATION OF INDOOR UNITS    
 12.1  PREPARING UNIT BEFORE INSTALLATION 18 
 12.2 INSTALLATION STEPS  19 
13. REMOTE CONTROL INSTALLATION 22 
14. OUTDOOR UNIT INSTALLATION  
 14.1  PREPARING UNIT BEFORE INSTALLATION 23 
 14.2 INSTALLATION STEPS  23 
15. CONNECTING REFRIGERANT PIPING LINES 24 
16.  CONNECTING CONDENSATE DRAIN LINE   35 
17. CONNECTING ELECTRICAL WIRING 36 
18. FINISHING INSTALLATION 40 
19. TEST RUNNING 41 
20.  AIR CIRCULATION FOR INDOOR UNIT 42QG SERIES  43 
21. AFTER INSTALLATION CHECK LIST 44 
22.  INSTALLATION OF OPTIONAL AIR FILTERS  46 
23. SELF DIAGNOSTIC FUNCTION FOR MALFUNCTIONS DETECTION 47  
						

							 
 
1
 
1.  GENERAL NOTES TO INSTALLER 
 
CARRIER split room air conditioner has been carefully designed and manufactured under strict 
Quality Control conditions. 
 
Therefore you are completely responsible for proper installation completion and operation of the air 
conditioner. 
 
Carefully read the manual carefully before proceeding with the installation to ensure correct 
installation. This manual describes installation instructions to help ensure trouble free operation and 
extended life of the air conditioner. 
 
Make sure all accessory parts are with the system before beginning installation.  
You will need the following tools during installation: 
1.  Standard screw driver  11. Tube bender 
2.  Phillips head screw driver  12.
 Hexagonal wrench 
3. Cutter drill  13.
 Torque wrench 
4. Metal saw  14.
 Vacuum pump 
5. Water level  15.
 Gas leak detector 
6. Meter  16.
 Manometer for pressure measuring 
7. Tube cutter  17.
 Thermometer 
8. Cutter  18.
 Volts – ohm - millimeter 
9. Reamer  19.
 Electro circuit tester 
10.  Flare tool  
  
 
After completion of installation, perform a run test and give the customer full 
instructions on the correct operation of the air conditioner including: 
 
•  Turning the unit on and off.  •  Removal and cleaning of the air filters. 
•  Functions of the remote control.  •  Re-installation of air filters after cleaning 
 
Leave the owner manual with the customer so that it can to be used during operation of the air 
conditioner. 
 
Leave the installation manual with the customer so that it can be used for any service and 
maintenance operations. 
 
Advise the customer to the tips of energy saving while operating the air conditioner 
for cooling.  
These tips are: 
 
1.  KEEP DOORS, WINDOWS AND ANY OTHER OPENINGS CLOSED to prevent conditioned 
air from escaping and to prevent warm air from entering the space to be air-conditioned. 
 
2.  CLEAN PERIODICALLY AIR FILTERS to assure maximum efficiency and adequate air 
circulation of the air conditioner. 
 
3.  KEEP DRAPES, FURNITURE OR OTHER OBSTRUCTIONS AWAY FROM BLOCKING 
RETURN AIR AND/OR SUPPLY AIR OF THE AIR CONDITIONER to assure maximum 
efficiency and adequate air circulation of the air conditioner. 
  
						

							 
 
2
 
2. MODELS  
 
HEAT PUMP                                Cool only 
System 
Model 
Indoor Unit 
Model 
Outdoor Unit 
Model 
 System 
Model 
Indoor Unit 
Model 
Outdoor Unit 
Model 
53QG18-H 42QG18-H 38QG18-H  53QG18-C 42QG18-C 38QG18-C 
53QG24-H 42QG24-H 38QG24-H  53QG24-C 42QG24-C 38QG24-C 
 
Notes:
   
53   = Split System 
42   = Indoor Unit 
38   = Outdoor Unit 
H    = Heat Pump 
C    = Cool Only 
  
      
 
 
 
 
 
3. OPERATING LIMITS **  
COOLING  HEATING 
Difference Dry Bulb 
Temp. C° 
Wet Bulb 
Temp. C°  Difference Dry Bulb 
Temp. C° 
Wet Bulb 
Temp. C° 
Indoor temperature 
Maximum 
Minimum  
32 
21  
23 
15  Indoor temperature 
Maximum 
  
27 
  
- 
 
Outdoor temperature 
Maximum 
Minimum  
* 
20  
- 
-  Outdoor temperature 
Maximum 
Minimum  
24 
2  
18 
1 
 
 
MAIN POWER SUPPLY
 
Standard Mild Ambient 
Outdoor Unit  High Ambient 
Outdoor Unit 
Nominal 
220V/1Ph/50HZ  Nominal 
220-240V/1Ph/50HZ 
Min. Voltage   198    Min. Voltage   198 
Max. Voltage   242    Max. Voltage   264    
NOTES: 
*  46°C for System with Mild ambient Standard outdoor unit. 
  52°C for System with High ambient outdoor unit.  
 
**  When the unit is operated above or below these limits for a long time, system diagnostics 
may detect a malfunction and the unit will not operate properly.
  
***  During heat pump operation, the system will undergo several defrost cycles to eliminate ice 
that might possibly collect on the outdoor unit in very low ambient temperatures. 
  
             After completions of defrost cycle, the system will normally operate  
						

							 
 
3
 
4. DIMENSIONS, WEIGHTS AND MINIMUM CLEARANCES 
 
4-1   OUTDOOR UNITS 
  38QG SERIES 
  DIMENSIONS (mm)
 
 
 
 
 
 
Weight 
Model Kg 
38QG18 52.8 
38QG24 58.5 
  
 
 
 
 
 
 
 
 
 
 
 
MINIMUM CLEARANCES FOR FREE AIR CIRCULATION, SERVICE AND MAINTENANCE 
 
Notes: 
-  The front of the condensing unit (Propeller discharge airside) should be free from obstructions.  
Any obstruction should be  away from front  of the condensing unit with distance specified in the 
following drawings. 
 
-  The back of the condensing unit (coil intake airside) should be at least 160 mm  away from any 
obstruction. This distance 160 mm  A  is built-in design of wall   support. 
 
-   A free space should be left on the right side of the outdoor unit. 
  
-  A free space should be left on the side of the refrigerant connections of condensing unit to ensure 
easy access to the terminal block. 
 
-  A free space should be left from the top cover of condensing unit to ensure easy access to electrical 
components, motor and propeller. 
 
-  The refrigerant line connections must be conveniently located for service and maintenance.
Kg 576
860
665
665350  
602
371
384
350 
						

							 
 
4
 
DIMENSIONS, WEIGHTS AND MINIMUM CLEARANCES (Cont.) 
 
MINIMUM CLERANCES OF OUTDOOR UNIT FOR FREE AIR CIRCULATION,  
SERVICE AND MAINTENANCE (Cont.) 
 
 
Obstacle at air inlet to outdoor unit ( unit back ) 
No obstacle at unit top 
 No obstacles at unit and left sides
 
     Single unit installation                   Serial installation of two or more units       
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
Obstacle at air inlet to outdoor unit ( unit back ) 
No obstacle at unit top 
 obstacles at unit right and left sides
 
     Single unit installation                   Serial installation of two or more units     
 
 
 
 
 
 
 
  
 
 
 
 
The hieght of the obstacle should be lower than the height of the outdoor unit. 
 
Obstacle at air inlet to outdoor unit ( unit back ) 
obstacle also at unit top 
 No obstacles at unit right and left sides
 
 
 
 
 
 
 
 
 
 
 
 
 
DIMENSIONS (mm) 
 
160 mm 
or more 
400 mm
 
or more400 mm
 
or more  160 mm
 
or more
400 mm
 
or more400 mm
 
or more400 mm
 
or more 250 mm
 
or more
400mm
 
or more 160 mm
or more 160 mm
 
or more 
400 mm
 
or more 250 mm
 
or more160 mm
 
or more 
						

							 
 
5
 
DIMENSIONS, WEIGHTS AND MINIMUM CLEARANCES (Cont.)  
MINIMUM CLERANCES OF OUTDOOR UNIT FOR FREE AIR CIRCULATION,  
SERVICE AND MAINTENANCE (Cont.) 
 
Obstacle at air outlet from outdoor unit ( unit front ) 
No obstacle also at unit top 
 No obstacles at unit right and left sides
 
     Single unit installation                   Serial installation of two or more units     
 
 
 
 
 
  
Obstacle at air outlet from outdoor unit ( unit front ) 
Obstacle also at unit top 
No obstacles at unit right and left sides 
 
 
 
 
 
 
 
   
Obstacles at both air inlet and air outlet of outdoor unit ( both unit front & back ) 
No obstacle also at unit top 
 No obstacle at unit right and left sides
 
    Single unit installation                   Serial installation of two or more units 
 
 
 
 
 
 
 
 
  
The height of obstacle at both front and back side, should be lower than the height of outdoor unit.   
Serial installation at front and rear sides 
Standard installation
 
Open the upper side and both right and left sides. 
 
 
 
 
 
 
 
 
 
 
The height of obstacle at both front and back, should be lower than the height of the outdoor unit. 160 mm
 
or more 
1000 mm 
or more 160 mm
 
or more
1000 mm
 
or more
400 mm
 
or more  400 mm
 
or more 1000 mm
 
or more 500 mm
 
or more 
1000 mm
or more 1000 mm
 
or more 
160 mm
 
or more  1000 mm
 
or more 1500 
or more 1000 mm
 
or more  160 mm
 
or more 
						

							 
 
6
 
DIMENSIONS, WEIGHTS AND MINIMUM CLEARANCES (Cont.) 
 
4-2 INDOOR UNITS 
42QG SERIES  
DIMENSIONS (mm)
  
 
 
 
 
  Weight 
Model Kg 
42QG18 14 
42QG24 14 
  
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
MINIMUM CLEARANCES FOR FREE AIR CIRCULATION, SERVICE AND MAINTENANCE 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Kg 1080185
Mounting Plate Main Body 
Connection Tube Drain Hose 
295   
						

							 
 
7
 
5.  PRECAUTIONS BEFORE INSTALLATION 
 
SAFETY CONSIDERATIONS 
 
• Installation of air conditioning equipment can be hazardous due to system pressures and 
electrical components. 
 
• The installation of the air conditioner must be done by Carrier or one of Carrier authorized 
dealers.
 
 
  
WARNING 
 
• This installation manual describes the installation procedures of Carrier split room air 
conditioner consisting of an outdoor unit and an indoor unit manufactured by Carrier.
 
 
What is not covered in Carrier warranty? 
1-  Failure due to wrong electrical connections between the electrical power supply and 
circuit breaker of air conditioner leading to fire due to short-circuiting. As these electrical 
connections are owner’s responsibility. 
 
2-  Failure due to Misuse, Abusing, overloading, negligence of air filters cleaning and 
negligence of instructions included in the owner’s manual.
 
 
3-  Failure due to Accident / Weather Natural catastrophe, accident due to bad weather  
(Hail Storm, Sand Storm, lightning, Flooding, Acid Rain and Air Borne fallout, etc). 
 
4-  Failure due to damages during transport done through the owner. 
 
5-  Failure due to any modifications in the product done through the owner and not done by 
Carrier or one of Carrier authorized dealers.
 
 
6-  Failure due to Installation done through the owner and not done by Carrier or one of 
Carrier authorized dealers.
 
 
7-  Failure due to Service and Maintenance done through the owner and not done by Carrier 
or one of Carrier authorized dealers.
 
 
8-  Failure due to repair by using non-genuine Carrier Parts, or substituting other than Carrier 
parts done through the owner and not done by Carrier or one of Carrier authorized dealers.
 
 
9-  Product normal sound ( refrigerant – moving parts ) 
 
10-  Inconvenience or commercial loss is not covered. 
 
The decision of Carrier in ascertaining the same will be final. Any such repairs will be carried - 
out at the expense of the owner ( purchaser ). 
 
 
!