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PIPING AND WIRING FOR INDOOR UNIT
74
Terminal Block Information
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
Terminal
Block 1
Block 3
Terminal
Block 2
Terminal Block 1 ~ 3
Connection for 3rd
Party controller
(5 V DC)
21
22
A
B
3rd PARTY
CONTROLLER
(5V DC)
1
2
3
4
5
L
N
L
N
L
WATER
WATER
TANK
PUMP
HEATER
(C)
Turn on or
Energizing water
Energizing water
off booster
pump for
pump for solar
DHW-recirculation
heater
thermal system
Terminal Block 5
TO ELB FOR
POWER SUPPLY
DHW TANK
(1 Ø, 220-240 V, 50 Hz)
E/HEATER
connecting external
connecting external
electric power supply
electric power supply for
for booster heater
backup heater
Terminal
Block 5
6
7
8
9
N
L
N
L1
WATER
PUMP
MIX PUMP
MIX VALVE
(B)
Power supply for 2nd
heating kit
Connection for thermostat
(230 V AC)
Supporting type : Heating only or
Heating/Cooling
23
24
25
L
N
L1
THERMOSTAT
(Default : 230 V AC)
10
11
12
13
14
L2
N
L
L1
N
3WAY VALVE
(A)
Water flow switching
between under floor
heating and
DHW tank heating
26
27
L2
L3
15
16
17
18
19
L1
L2
N
1(L)
2(N)
2WAY VALVE
OUTDOOR UNIT
(A)
Opening or closing
Power supply for
water flow for
Indoor unit and
FCU cooling
communication
20
3
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