Circuit Breaker Specification; Wiring Procedure For Power Cable And Connecting Cable - LG THERMA V Air-to-Water Heat Pump Installation Manual

Circuit Breaker Specification

• Select a power source that is capable of supplying the current required by the AWHP.
• Use a recognized circuit breaker between the power source and the unit.
A disconnection device to adequately disconnect all supply lines must be fitted.
• Capacity of circuit breaker recommended.
• Separate main power supply and heater supply.
Model
Power
Indoor Outdoor
Supply
AHNW096A0 AHUW096A0
AHNW09604A1 AHUW096A1
AHNW126A0 AHUW126A0
1~
AHNW146A0 AHUW146A0
220-240V
AHNW166A0 AHUW166A0
50Hz
AHNW09606A0
AHNW09A06A0 AHUW096AN
AHNW09806A0
AHNW16606A1
AHNW16A06A1 AHUW168A1
AHNW16806A1
3N~
AHNW16606A1
380-415V
AHNW16A06A1 AHUW148A1
50Hz
AHNW16806A1
AHNW16606A1
AHNW16A06A1 AHUW128A1
AHNW16806A1
1~
AHNW16606A1 AHUW126A1
AHUW146A1 220-240V
AHNW16606A1
50Hz
AHNW16606A1 AHUW166A1
1~
AHNW09604A1 AHUW096A2 220-240V
50Hz
AHNW16606A1 1~
AHNW16A06A1 220-240V
AHUW126A2
AHNW16806A1 50Hz
AHNW16606A1
1~
AHNW16A06A1
AHUW146A2 220-240V
AHNW16806A1
50Hz
Notes:
1. MCA / MOP
MCA = (1.25 x Load1) + Load2 + Load3
MOP = (2.25 x Load1) + Load2 + Load3
- Load1 : Rated running current of largest motor
(compressor or other motor)
- Load2 : sum of current for all other motors
- Load3 : any other load rated 1.0A or more
2. Select wire spec. based on the MCA
3. Recommended circuit breaker is ELCB (Earth Leakage Circuit breaker)

Wiring Procedure for Power Cable and Connecting Cable

Step 1. : Disassemble the side panel from the outdoor unit by loosing screws.
Step 2. : Connect Power cable to Main Power Terminal and Connecting cable to Control
Terminal, respectively.
See below figure for detailed information. When connecting earth cable, the
diameter of cable should be bigger than 1.6mm
connected to the terminal block where earth symbol
Step 3. : Use cable clamps (or cord clamps) to prevent unintended move of Power cable and
Connecting cable.
Step 4. : Reassemble the side panel to the outdoor unit by fastening screws.
Core Component Electrical Spec.
Electric Heater
Compressor
RLA FLA Capacity Power RLA
(kW) (A)
(A) (A)
Supply
9.7 15 2+2 8.3
17.0 25
1Ø 230V
17.0 27
3+3 12.5
17.0 27
9.7 15 15.8
3Ø 220V
2+2+2
8.7
3Ø 400V
3+3 12.5
1Ø 230V
5.3 15.8
3Ø 220V
2+2+2
3Ø 400V 8.7
3+3 12.5
1Ø 230V
5.0 9.9 3Ø 220V 15.8
2+2+2
8.7
3Ø 400V
3+3 1Ø 230V 12.5
4.0 15.8
3Ø 220V
2+2+2
3Ø 400V 8.7
25
17.0 3+3 1Ø 230V 12.5
27
27
9.7 15 2+2 1Ø 230V 8.3
3+3
1Ø 230V 12.5
14.5
3Ø 220V 15.8
2+2+2
3Ø 400V 8.7
29
3+3 1Ø 230V 12.5
16.9 3Ø 220V 15.8
2+2+2
3Ø 400V 8.7
Piping and Wiring for Outdoor Unit
Sanitary Tank Heater For Heat Pump
Capacity Power FLA MOP
(kW) (A) (A)
Supply
23.9
40.3
23.9
14.0
13.3
1Ø
3 12.5
230V
11.1
40.3
23.9
34.7
40.1
4. RLA is measured during each individual compressor test condition.
MCA : Minimum Circuit Amperes (A)
MOP : Maximum rating Over current Protective device
RLA : Rated Load Amperes (A)
FLA : Full Load Amperes (A)
S/Heater: Sanitary Water Tan Heater
to secure safety. The earth cable is
2
MOP & Circuit Breaker
For Electric Heater For Electric Heater
(without S/Heater) (with S/Heater)
Circuit MOP Circuit MOP
Breaker(A) (A) Breaker(A) (A)
20 27 30 45
40
41 40 53
20 37 30 49
22 20 38
41 40 53
13 37 30 49
22 20 38
41 40 53
13 37 30 49
22 20 38
41 40 53
10 37 30 49
22 20 38
40 41 40 53
20 27 30 45
41 40 53
30 37 30 49
22 20 38
41 40 53
37 30 49
40
22 20 38
is marked.
Installation Manual 47
Circuit
Breaker(A)
40
50
40
30
50
40
30
50
40
30
50
40
30
50
40
50
40
30
50
40
30