Terminal Block Information - LG Therma V Series Installation Manual

Piping and Wiring for Indoor Unit
Terminal Block Information (1Ø Electric Heater)
Symbols used below pictures are as follows :
- L, L1, L2 : Live (230V AC)
- N : Neutral (230V AC)
- BR : Brown , WH : White , BL : Blue , BK : Black
Terminal Block 1
3WAY VALVE
(B)
1 2 3
L L1 N
BR WH BL
water flow switching between using
solar thermal heating and skipping
solar thermal heating
Terminal Block 2
OUTDOOR UNIT
11 12 13
1(L) (2(N) 3
(BR) BL BK
Power supply for Indoor
unit and communication
Terminal Block 3
EXTERNAL POWER
(INTERNAL E/HEATER)
1 2
L N
BR BL
connecting external electric
power supply for internal
electric heater
54 Air-to-Water Heat Pump
water flow switching between
energizing water
under floor heating and sanitary
pump for solar
thermal system
WATER WATER
PUMP TANK
(B) HEATER
4 5 6 7
L N L N
BR BL BR BL
turn on or off sanitary
water tank heater
opening or closing
water flow for FCU
cooling
2WAY VALVE
(Default : 230V AC)
(A)
14 15 16 17
L1 L2 N L
BR WH BL BR
Connection for thermostat
(230V AC)
Supporting type : Heating only or
Heating/Cooling
connecting external electric
power supply for sanitary
water tank electric heater
EXTERNAL POWER
(W/TNK E/HEATER)
3 4
L N
BR BL
water tank heating
3WAY VALVE
(A)
8 9 10
L L1 N
BR WH BL
THERMOSTAT
18 19 20
N L1 L2
BL WH BK
Terminal
Block 1
Terminal
Block 2
Terminal
Block 3