Carrier 42qg24-h Manual

							 
 
38
 
CONNECTING ELECTRICAL WIRING (Cont.) 
 
17-3 ELECTRICAL DATA 
Input Power Main Power 
Connections 
Cooling Split 
System 
Model Starting 
Current 
(Note 1) System 
Power 
Supply 35 °C 
* 46 °C 
** 52 °C 
*** Heating 
**** Circuit  
Breaker  Wire 
Size 
(Note 2)
 
Heat Pump Amp V/Ph/Hz Amp Watt Amp Watt Amp Watt Amp Watt Amp mm² 
Standard mild ambient outdoor unit with rotary compressor 
53QG18-H 52  9.5 1945 11.5 2425 - - 805 1745 20  4 
53QG24-H 78 220/1/50 
11.8 2435 13.9 2880 15.1 3130 11.8 2460  25  4 
High ambient outdoor unit with rotary compressor 
53QG18-H 44  8.6 1940 10.2 2270 11.1 2450  7.5  1660  20  4 
53QG24-H 66 220/1/50 
12.2 2635 14.2 3090 15.3 3340 11.3 2490  25  4 
Cool Only Amp V/Ph/Hz Amp Watt Amp Watt Amp Watt Amp Watt Amp mm² 
High ambient outdoor unit with rotary compressor 
53QG18-C 44  8.5 1880 9.8 2160 10.5 2320  -  -  20  4 
53QG24-C 66 220/1/50 
12.5 2550 14.4 3015 15.5 3270  -  -  25  4  
Notes: 
1.  Starting Current duration is usually less than 1 Second. 
2.  Wire size shown applies to standard applications with line length up to 15 meter and a subsequent 
voltage drop not to exceed 3%. 
  
  For specific conditions and long lines, the resulting voltage drop must be checked and it may be 
necessary to use the next larger size. 
 
  When sizing wires consider the amperage at peak conditions with the highest possible ambient 
temperature expected for the installation area and lowest probable line voltage. 
 
3. Operating Conditions. 
 
*  Indoor 27/19 °C  DBT/WBT  Outdoor 35 °C DBT 
High speed of indoor unit motor 
 
**  Indoor 27/19 °C  DBT/WBT  Outdoor 46 °C DBT 
High speed of indoor unit motor 
 
***  Indoor 27/19 °C  DBT/WBT  Outdoor  52 °C DBT 
  High speed of indoor unit motor 
 
****  Indoor 20 °C    DBT       Outdoor 7/6 °C DBT/WBT 
High speed of indoor unit motor  
						

							 
 
39
LEGEND 
   Earth 
L     Live power supply. 
N     Neutral power supply. 
R     Live connection indoor/outdoor unit. 
C     Neutral connection indoor/outdoor unit. 
Y   Compressor control. 
O     Reversing valve control. 
W2     Outdoor fan motor control. 
 S   Outdoor coil sensor. 
LEGEND
 
   Earth 
L     Live power supply. 
N     Neutral power supply. 
R     Live connection indoor/outdoor unit. 
C     Neutral connection indoor/outdoor unit. 
Y        Compressor control. 
 
CONNECTING ELECTRICAL WIRING (Cont.)  
17-4 CONNECTING ELECTRICAL WIRING FOR HEAT PUMP SYSTEM 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sizes of electrical wires  
R C Y O W2 S L N 
1 mm2 1 mm2 1 mm2 1 mm2 1 mm2 1 mm2 4 mm2 4 mm2  
 
17-5 CONNECTING ELECTRICAL WIRING FOR COOL ONLY SYSTEM 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sizes of electrical wires  
R C Y L N 
1 mm2 1 mm2 1 mm2 4 mm2 4 mm2   
Note:  (1) Connect the power supply to the outdoor unit and then get the power required 
     for the indoor unit from the outdoor unit. 
 
      (2) All dotted lines to be fitted by installer. 
           (3) Refer to wiring diagrams and stickers-caution sticked inside the outdoor & indoor units. 
 
220-240V ~ 50Hz  
Circuit  
Breake
r
Main  
Switch  
220-240V ~ 50Hz
Circuit  
Breake
r
Main  
Switch  
Indoor 
Unit  
Outdoor
 
Unit  
Indoor
 
Unit  
Outdoor
 
Unit  
R C Y 
RC Y 
						

							 
 
40
Piping
Decorative Tape
Saddles 
 
18. FINISHING INSTALLATION  
18-1  FINISHING STEPS FOR INSTALLATION   
 
d. Insert grille frame to the top of the 
indoor unit body.   
 
a. Tie together refrigerant piping, drain 
  hose, electrical connection cords. 
Form the refrigerant piping in the required 
direction and bind the drain hose, electrical 
connection cord and signal line together with 
vinyl tape. 
• The drain hose should be always at the bottom 
of lump to assure smooth drainage.  
• The lump must be of circular shape. 
 
 
 
 
 
 
 
 
 
 
e. Push the triangle marks located at the 
bottom of the grill frame.
 
 
f.  Fix the grille frame by the two screws  
  Fix the terminal block cover by the two 
screws.
 
 
b. Fill the gap between the outside wall 
pipe hole and the piping with sealing 
wall sleeve, wall cap and sealer so that 
rain and wind cannot enter.
 
 
 
 
 
 
 
 
 
 
g. Mount insert grille to the top of indoor 
unit body with both hands and fit it to 
the latch of the grille frame.
 
 
c. Adjust the internal deflectors of supply 
air for correct air diffusion to the right 
or left direction as per the requirements 
for the room to be air-conditioned
 
 
h. Check that the return air sensor is 
properly fixed and inside its plastic clip-
on the indoor coil.
 
 
i.  After completion of electrical wiring to the outdoor unit: 
• Fasten the electrical cords with the cable clamp. 
• Install again the service door.  
 
Electric Cables &  
Di-frost sensor cable
Liquid Line 
Drain Hose  Suction 
Line 
Wall Sleeve 
Wall Cap    
Sealer Putty  
Outdoor side 
Wall
Indoor Side   
						

							 
 
41
 
19. TEST RUNNING  
19.1 Note:  
- 
Operate test running after mounting air filters, return grill and cabinet. 
- Operate testing running after completion of connecting refrigerant piping lines,  
drain line and  electrical wiring 
 
19.2  STEPS FOR COOLING TEST RUNNING  
a.  Move circuit breaker to ON position. 
 
b.  After system operation becomes stabilized:      
- Measure high and low pressures to check 
correct refrigerant charge. (See figure & table) 
- Measure total Amps consumed by the system. 
- Measure System working voltage.  
 
 
 
System Cooling Test Running  
 
SYSTEM MODEL 53QG18-H 53QG24-H 
AMBIENT TEMP    ºC 35 40 46 35 40 46 52 
HIGH PRESSURE     PSI  280 315 350 260 305 345 390 
LOW PRESSURE      PSI 72 75 79 60 62 64 66 
TOTAL AMPS             9.5  10.5  11.5  11.8  12.7  13.9  15.1 
Notes: 
1-  Readings at 220 volt and 27 ºC return air to indoor unit 
    and high speed of indoor unit motor. 
2-  System with Standard mild ambient outdoor unit with rotary compressor. 
SYSTEM MODEL 53QG18-H 53QG24-H 
AMBIENT TEMP    ºC 35 40 46 52 35 40 46 52 
HIGH PRESSURE     PSI  280 312 343 392 267 300 334 382 
LOW PRESSURE      PSI 73 75 77 79 65 67 69 71 
TOTAL AMPS             8.6  9.3  10.1 11.1 12.2 13.1 14.0 15.3 
Notes: 
1-  Readings at 220 volt and 27 ºC return air to indoor unit 
    and high speed of indoor unit motor. 
2-  System with High ambient outdoor unit with rotary compressor. 
SYSTEM MODEL 53QG18-C 53QG24-C 
AMBIENT TEMP    ºC 35 40 46 52 35 40 46 52 
HIGH PRESSURE     PSI  260 295 330 370 260 297 335 375 
LOW PRESSURE      PSI 69 71 73 75 62 64 66 68 
TOTAL AMPS             8.5  9.1  9.8  10.5 12.5 13.4 14.4 15.5 
Notes: 
1-  Readings at 220 volt and 27 ºC return air to indoor unit 
    and high speed of indoor unit motor. 
2-  System with High ambient outdoor unit with rotary compressor. (1)
1.   High Pressure Measuring. 
2.  Low Pressure Measuring.  (2)
 
Outdoor Unit Details  
						

							 
 
42
 
TEST RUNNING  (Cont.) 
 
19.4  STEPS FOR HEATING TEST RUNNING  
 
a.  Move circuit breaker to ON position. 
 
b.  After system operation becomes stabilized: 
- Measure high and low pressures to check 
correct refrigerant charge. (See figure) 
- Measure total Amps consumed by the system. 
- Measure system-working voltage. 
 
 
 
 
 
System Heating Test Running   
 
SYSTEM MODEL 53QG18-H 53QG24-H 
AMBIENT TEMP    ºC  7 7 
HIGH PRESSURE    PSI   240  260 
LOW PRESSURE     PSI  52  50 
TOTAL AMPS     8.5  11.8  
Notes: 
1- Readings at 220 volt and 20 ºC return air to indoor unit 
    and high speed of indoor unit motor. 
2- System with Standard mild ambient outdoor unit with rotary compressor. 
 
SYSTEM MODEL 53QG18-H 53QG24-H 
AMBIENT TEMP    ºC  7 7 
HIGH PRESSURE    PSI   230  250 
LOW PRESSURE     PSI  60  60 
TOTAL AMPS     7.5  11.3  
Notes: 
1- Readings at 220 volt and 20 ºC return air to indoor unit 
    and high speed of indoor unit motor. 
2- System with High ambient outdoor unit with rotary compressor. 
 1.  Low Pressure Measuring. 
2. High Pressure Measuring.  (1)
(2)
 
Outdoor Unit 
Details  
						

							 
 
43
 
20. AIR CIRCULATION FOR INDOOR UNIT 42QG SERIES  
Air is supplied into the room through the supply grilles located on the bottom of the cabinet of the indoor unit. 
Air from the room is drawn into the indoor unit through the return grille and filters at the top of the indoor unit. 
• Make absolutely sure that the supply and return grilles of the indoor units are not obstructed (even partially). 
 
The airflow direction can be adjusted to optimize air distribution in the room. 
Press button SWING repeatedly to choose one of the following louver positions:  
 
Symbol on display 
 
Air direction will be set automatically. 
Louver will be set to the preset position  
according to the operation mode. 
 
 
• In Cool or Dry or Fan mode, the louvre will swing in cooling range. 
• In Heat mode, the louvre will swing in heating range. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6 positions can be chosen. 
The louvre can be set to one  
of 6 different airflow directions. 
 
 
 
 
The louver will continuously swing up and down. 
“Swing” always assures optimal even air distribution in the room. 
 
 
 
 
 
 
 
COOL
HEAT   Swing Range 
   Notes: 
• Please do not fix the flap at position   6   for a long time, because this position 
minimizes air circulation resulting in uneven room temperature. 
• Do not adjust the flap by the hand during SWING operation because it may damage 
the air swing mechanism. 
• If you want maximum cooling or heating capacity, please set louvre at position  4  
						

							 
 
44
 
21. AFTER INSTALLATION CHECK LIST 
 
21.1 INDOOR UNIT 
a.   The installation location is adequate.  
b.  The unit is solidly mounted and leveled.  
c.   The air filters are installed correctly.  
d.  The internal deflectors of supply air are adjusted for correct air diffusion.  
21.2 OUTDOOR UNIT 
a.   The installation location is adequate.  
b.  The unit is solidly mounted and leveled.  
c.   The wall support is fixed properly with the wall.  
d.  The service door and its fixing screw are replaced.  
21.3  REFRIGERANT PIPING LINES CONNECTIONS 
a.   The refrigerant piping lines are adequate with system model.  
b.  The insulation is wrapped on the coupling connections.  
c.   The air purge is properly done.  
d.  The refrigerant piping lines are tested for refrigerant leakage.  
e.   The service valves for suction and liquid in outdoor unit are open.  
f.   The cap nuts for flare valves are properly tightened.  
21.4  CONDENSATE DRAIN LINE CONNECTIONS 
a.   The Condensate drain line from indoor unit is gradually inclined downwards to the 
 outside. 
 
b.  The Condensate water flow smoothly.  
21.5 ELECTRICAL CONNECTIONS 
a.   The operating voltage electrical power supply is in the voltage range shown on the 
unit’s nameplates. 
 
b.  The sizes of electrical connection cords are adequate according to system model.  
c.  The size and type of unit circuit breaker are adequate according to system model.  
d.  The electrical wiring connections between power supply, outdoor unit, indoor unit 
and circuit breaker are adequate. 
 
e.  All fields electrical wiring connections are tightened and secured.  
f.  The earth wire is connected to the ground.   
						

							 
 
45
 
INSTALLATION CHECK LIST (Cont.) 
 
21.6 FINISHING INSTALLATION 
a.   The refrigerant piping lines, electrical cables and drain hose are lumped together. 
  The drain hose is at the bottom of lump. 
 
b.  The wall passage hole is properly sealed.  
21.7 TESTING RUNNING 
a.   The cooling and heating cycles are tested 
  At least one complete cooling cycle of unit operation is observed. 
  At least one complete heating cycle of unit operation is observed. 
 
b.  There is no any abnormal noise or vibration from the outdoor unit during operation.  
c.   There is no any abnormal noise or vibration from the indoor unit during operation.  
d.  The wireless remote control operate Correctly.  
e.   Each lamp on the indoor unit lights normally.  
21.8 CUSTOMER GUIDANCE 
a.   The correct operation of the air conditioner has been explained to the customer 
  including the following points:   
• Starting and stopping method  
• Operation switching  
• Temperature adjustment  
• Timer Function  
• Air Flow switching  
• Other remote control operations  
• How to use the air louvers  
• Filter removal and cleaning  
b.  The operation and installation manuals have been given to the customer.  
  
						

							 
 
46
 
22.  INSTALLATION OF OPTIONAL AIR FILTERS 
 
22.1 NOTE: 
  Optional set of air filters can be added and field installed as shown below. 
 
 
22.2 TYPE OF AIR FILTERS:  
Standard anti – bacteria air filters for dust & bacteria removal 
 
Optional carbon filter for odor removal 
 
Optional photo-catalytic filter for cigarette smoke removal 
 
 
 
22.3 INSTALLATION STEPS OF OPTIONAL AIR FILTERS:  
Step (1): After lifting return air grill up to the top of the unit, pull the standard air filters downward. 
 
Step (2): Install optional air filters inside the top guides of the unit (specified for optional air filters), 
then install standard air filters. 
 
Step (3): Install return air grille and close it. 
 
  
						

							 
 
47
 
23.  SELF DIAGNOSTIC FUNCTION FOR MALFUNCTIONS DETECTION 
 
EXPLAINATION OF SELF-DIAGNOSTIC FUNCTION 
 
-  Self-diagnostic function is the key for success of air conditioner operation.  
-  The printed circuit boards existing inside the indoor unit are equipped with self-diagnostic function 
to detect malfunction and automatically stops the operation at the air conditioner. 
 
-  Once a malfunction is detected, the diagnostic control section will force the system mode to OFF 
for 3 minutes. After the OFF delay, system mode releases and allowed returning to its normal state. 
The system will be allowed to restart on its own.  
The diagnostic control section will allow the system to fail 5 consecutive times before shutting 
down the system.  
If the system is performing an active defrost, both the compressor drive and reversing valve 
malfunction test will be cancelled and reinitiated after the following compressor OFF-ON cycle.  
 
- The unit on lamp is scanned every half-second and the error codes are displayed by the flashing 
frequency of unit on lamp. The error codes are displayed during SHUT-OFF  (3 minutes off and after 
the 5th retry failure). 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
Malfunction 
Reason 
Flashing 
Frequency 
Allowed 
Modes 
Return Air Sensor  3  Fan Only 
Indoor Coil Sensor  4  Fan Only 
Compressor Drive  9  Fan Only 
Electronic Control PCB (EEPROM)  10  Fan Only 
 
Notes : 
 
1-  Prior to the malfunction repair, disconnect the electrical mains supply by moving the circuit 
breaker to OFF position. 
 
2-  After repairing the malfunction:  
     2-1 Press Reset button (3)  
     2-2  connect the electrical main supply by moving the circuit breaker to ON position  
     2-3 operate the air conditioner by using the wireless remote control. 
 
1 : Green led flashes 
     if there is a malfunction 
3 : Reset  Button 
1
3