LG THERMA V Installation Manual page 82

PIPING AND WIRING FOR OUTDOOR UNIT
82
Terminal Block Information
(For Split)
Symbols used below pictures are as follows :
- L, L1, L2 : Live (230 V AC)
- N : Neutral (230 V AC)
- BR : Brown, WH : White, BL : Blue, BK : Black
Terminal Block 1
energizing water
pump for solar
thermal system
1 2 3 4
L L1 N L
WATER
3WAY VALVE
PUMP
(B)
(B)
water flow switching between
using solar thermal heating
and skipping solar
thermal heating
Terminal Block 2
opening or closing
water flow for FCU
cooling
11 12 13 14
1(L) 2(N) 3 L1 L2
2WAY VALVE
OUTDOOR UNIT
(A)
Power supply for Indoor
unit and communication
Terminal Block 3 (1Ø Electric Heater)
connecting external electric
power supply for DHW tank
electric heater
1(L) 2(N) 3(L)
TO ELB FOR
DHW TANK E/HEATER
connecting external electric
power supply for internal
Terminal Block 4 & 5
21 22 23 24
A B L
3 PARTY
rd
Mix
CONTROLLER
Pump
(DC 5 V)
Connection for 3 rd
Party controller
(5 V DC)
water flow switching between
under floor heating and
DHW tank heating
5 6 7 8 9
N L N L L1
WATER
3WAY VALVE
TANK
(A)
HEATER
turn on or off DHW
tank heater
15 16 17 18 19
N L N L1
THERMOSTAT
(Default : 230 V AC)
Connection for thermostat
(230 V AC)
Supporting type : Heating only or
Heating/Cooling
4(N)
POWER SUPPLY
(1 Ø, 220-240 V, 50 Hz)
electric heater
25 26 27
N L1 L2 N
Mix Valve
Power supply for
nd
2 heating kit
10
N
20
L2
Terminal
Block 1
Terminal Block 3 (3Ø Electric Heater)
connecting external
electric power supply
for internal
electric heater
1 2 3
R S T
POWER SUPPLY
(3 Ø, 380-415 V, 50 Hz)
Terminal Terminal
Block 2 Block 3
Terminal
Block 4 & 5
connecting external
electric power supply
for internal
electric heater
4 5
L
POWER SUPPLY TO ELB FOR
EARTH DHW TANK E/HEATER
connecting external
electric power supply
for DHW tank
electric heater
6
N