Carrier 53QG18-H User 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
PAGENO.
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
HEATPUMP Coolonly
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
665
350
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
Singleunitinstallation Serialinstallationoftwoormoreunits
Obstacle at air inlet to outdoor unit ( unit back )
No obstacle at unit top
obstacles at unit right and left sides
Singleunitinstallation Serialinstallationoftwoormoreunits
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 more
400 mm
or more
160 mm
or more
400 mm
or more
400 mm
or more
400 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 more
160 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
Singleunitinstallation Serialinstallationoftwoormoreunits
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
Singleunitinstallation Serialinstallationoftwoormoreunits
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 1080 185
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 ).
!

8
6. SPLIT SYSTEM DESCRIPTION
1: Remote control signal receiver.
2: Operating status leds. 6: Supply air outlet
3: Supply air flap 7: Characteristics nameplate.
4: Air return. 8: Inter connecting tubing.
5: Air filter. 9: Condensate drain line.
Indoor Unit
3
8
7
2
1
9
45
Outdoor Unit
6

9
7. INSTALLATION ACCESSORIES
7.1 STANDARD INSTALLATION ACCESSORIES Supplied from the factory
DESCREPTION CONFIGURATION QTY USAGE
Battery 1.5 volt size AAA
alkaline type 2 To operate the wireless remote control
Wireless remote control and
Plastic holder for remote
1 To operate the air conditioner
To mount remote control on the wall
Owner manual 1 To illustrate control functions of operation
Installation Manual 1 To illustrate installation instructions.
Insulation Tube. 1
To insulate half unions and Flare nuts after
connecting refrigerant piping lines to the
indoor and outdoor units.
Wall hang bracket 1 For indoor unit installation on the wall.
Self tapping screw 5 x L50 5 For wall hang bracket installation
Tapping Screws 2 For adjustment the gap between indoor
unit and wall.
Drain Elbow 1 Outdoor unit
Condensate drain
7.2 OPTIONAL ACCESSORIES Supplied from the factory as per the requirement
DESCREPTION CONFIGURATION QTY USAGE
Wall support for outdoor unit
1 To mount outdoor unit on the wall
Floor support for outdoor unit
1 To mount outdoor unit on the
ground or floor
Insulated refrigerant piping lines
with flare couplings of lengths
4-6-8-10-12 meter
1
To connect Freon between
outdoor and indoor units and
refrigerant piping lines
Optional air filters
(Carbon air filter + Photo-catalytic
air filter)
Set of 2
To eliminate odor and cigarette
smoke in the room air
respectively.
PTC starting device 1
To start the compressor in
outdoor unit at low voltage down
187V

10
INSTALLATION ACCESSORIES (Cont.)
7.4 OTHER INSTALLATION ACCESSORIES
Not supplied from the factory but must be used in the field to complete installation.
DESCREPTION USAGE
Electrical Connection Cords To electrically connect the indoor unit, the outdoor unit and circuit
breaker
ـWall Sleeve
ـWall Cap
ـSealer putty
To fill the gap between the wall hole and the lump of refrigerant
piping lines, electrical connection cables and condensate drain line.
ـFinishing tape PVC film To tie together the refrigerant piping lines, electrical connection
cables and condensate drain line.
ـVinyl tape To stick pipe insulation.
ـDrain hose ID 16-17mm To remove condensate water, from the indoor unit to the outside.
ـRefrigerant piping lines To connect Freon R22 between outdoor and indoor units
ـPipe insulation To insulate suction and liquid refrigerant piping lines
- Refrigerant R22 To adjust refrigerant charge for long refrigerant piping lines
(more than 3 meter)
- Refrigerant Oil To be added for long refrigerant piping lines (more than 10 meters)
- Clamps or saddles To secure the lump of refrigerant piping lines, electrical cables and
condensate drain line

11
8. INSTALLATION CHART
1) Installing outdoor unit 5) Connecting refrigerant
piping lines 9) Air purging with a vacuum pump
2) Drilling hole thru the
wall 6) Connecting condensate drain line 10) Refrigerant leak test
3) Installing indoor unit 7) Connecting electrical
wiring 11) Opening service valves
4) Processing pipes 8) Finishing outer pipe
covering 12) Finishing installation
13) Test Running
14) Description of operation
Outdoor
unit

12
9. SELECTING INSTALLATION LOCATION FOR INDOOR UNIT
9.1 CONSIDERATIONS FOR SELECTING INSTALLATION LOCATION
Avoid excessive height difference between
indoor and outdoor units
Avoid excessive length of refrigerant piping
lines between indoor and outdoor units
Location of Indoor Unit
Relative to Space to be Air-Conditioned.
The installation location should permit the unit
to deliver air to all of the space to be uniformly
air-conditioned.
Avoid direct sunlight that may affect
performance of the unit
Avoid heat sources such as steam or flame
that may affect performance of the unit.
Avoid obstructions such as Curtains,
Furniture and Cloths…etc. These obstructions
can affect motion of supply air and/or return
air, which in turn affects unit efficiency and
airflow.
175CM OR MORE

13
SELECTING INSTALLATION LOCATION FOR INDOOR UNIT (Cont.)
CONSIDERATIONS FOR SELECTING INSTALLATION LOCATION (Cont.)
Avoid an installation location, which has an
environment with oil vapors.
Avoid an installation location which has an
environment affected by high frequency waves
generated as from radio equipment’s welders
and medical equipment’s.
Avoid installation location on humid walls or positions with water hazard, e.g. laundry premises.
Check that the wall surface is flat enough to allow easy and safe installation.
The wall structure should be strong enough to carry the unit weight and avoid deformation,
rupture or vibration during operation.
Choose an installation location that allows easy installation.
Choose an installation location that allows for free air circulation service and maintenance
minimum clearances.
Choose an installation location where condensate water from indoor unit can easily be piped
to an appropriate drain
Location of Wall Hole
The wall hole (required to pass refrigerant piping lines, electrical cables and drain hose)
should be according to the selected installation location.

14
SELECTING INSTALLATION LOCATION FOR INDOOR UNIT (Cont.)
9.2 POSSIBLE OUTLET LOCATIONS OF REFRIGERANT PIPING LINES FROM INDOOR UNIT
Possible outlet locations of refrigerant
piping lines from indoor unit.
The refrigerant piping lines can be
connected in one of the following Four
outlet locations as indicated by (1), (2), (3)
and (4)
When the piping is connected to the
direction of (1) or (2) or (4),
Detach the knock – out either at the side
or at the bottom of the unit. See fig. (2)
NOTE:
The recommended outlet location to pass
refrigerant piping lines, electrical cables
and condensate drain line either from
behind unit right or from behind unit left to
keep appearance of installation and to
facilitate installation.
The unit hides the refrigerant lines;
electrical cables and condensate drain line.
* Note:
In case of impossibility of mounting the indoor unit directly on the wall, use floor support for indoor unit
SR OUTLET
LOCATION NOTES
1 UNIT RIGHT Remove right side knock-out
2 UNIT
BOTTOM Remove bottom knock-out
3UNIT BACK Do not remove side
or bottom knock-out
4 UNIT LEFT Remove left side knock-out
Fig. (1)
4
3
2
1
4
2
1
Fig. (2)

15
10. SELECTING INSTALLATION LOCATION FOR OUTDOOR UNIT
10.1 INSTALLATION LOCATIONS
The condensing unit can be installed in any outside location, on a wall, roof or on a ground level.
10.2 CONSIDERATIONS FOR SELECTING INSTALLATION LOCATIONS
Avoid excessive distance between outdoor
and indoor units
Avoid excessive height between outdoor
and indoor units
Avoid any obstruction of the unit air outlet
and intake or any obstacle that is too close
Avoid multiple unit installation with units
facing each other.
Avoid unnecessary turns and bends in the
refrigerant piping lines.

16
SELECTING INSTALLATION LOCATION FOR OUTDOOR UNIT (Cont.)
CONSIDERATIONS FOR SELECTING INSTALLATION LOCATION (Cont.)
Avoid dripping into
passageways.
Avoid soiling of pipe
ends
Avoid allowing
piping to get wet
before connection
Avoid disconnecting
the refrigerant
connections after
installation, this will
cause refrigerant
leaks
Avoid connecting the condensate drain line
to the outdoor unit.
a. Weight of Outdoor Unit
The installation location of outdoor unit should be able to support operating weight of outdoor
unit, and not cause vibration.
b. Effect of Direct Sunlight
The installation location of outdoor unit is preferable to be far away from the direct sunlight.
c. Effect of heat sources, steam or flammable gas
The installation location of outdoor unit should be far away from heat sources, steam or
flammable gas.
d. Cleanness of location
The installation location of outdoor unit should be free of dust or any material, which can
cause clogging of condenser coil. When installing unit on the ground, select a location not
subjected to flooding.
When the installation is made on the rooftop or other places subject to strong wind :
When the outdoor unit is to be installed on the rooftop or at the places where there are no other
buildings around. it is required to avoid the strong wind from blowing directly into the air outlet of the
outdoor unit so as to prevent the negative impacts on cooling or heating performances due to
insufficient airflow of the outdoor unit heat exchanger and to prevent from faulty performances.
When there are walls in the vicinity, the air outlet
should face the wall and keep a space of 500mm
from the wall.
When the air outlet is affected by the strong wind,
the installation position should be changed so as
to make the air outlet at a straight angle from the
wind direction.

17
11. INSTALLATION LOCATION CHECK LIST
(A) INDOOR UNIT
- The installation location is close to the outdoor unit
- The wall hole (required to pass refrigerant piping, electrical cables and drain line)
is on the unit right back
- The installation location permit the unit to deliver air to all of the space
to be air-conditioned
- The installation location is far away from any sunlight
- The installation location is far away from any heat sources
- The installation location avoid obstructions, which affect motion of supply and/or
return air to the unit
- The installation location permit free service space around the unit right, left and top
(B) OUTDOOR UNIT
- The electrical power supply is close to the outdoor unit
- The installation location is close to the indoor unit
- The installation location is able to support operating weight of outdoor unit
- The installation location is far away from any sunlight
- The installation location is free of dust or any material,
which can cause clogging of outdoor coil
- The installation location allow sufficient space
for air circulation around the unit
- The installation location allow sufficient space
for service and maintenance around the unit
(C) REFRIGERANT PIPING LINES BETWEEN INDOOR AND OUTDOOR UNITS
- The excessive length of refrigerant piping lines is avoided
- The excessive height between indoor and outdoor units is avoided