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How to wire Heating / Cooling / DHW Heating thermostat
Follow below procedures Step 1 ~ Step 3.
Step 1. Uncover front cover of the unit and open the control box.
Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3.
Step 3. Find terminal block and connect wire as below.
TB 1
23
24
25
26
L
N
L1
L2
THERMOSTAT
(Default : 230 V AC)
(L)
(N)
(C)
Thermostat
WARNING
!
Mechanical type thermostat.
Do not connect wire (N) as mechanical type thermostat does not require electric power supply.
CAUTION
!
Do not connect external electric loads.
Wire (L) and (N) should be used only for operation electric type thermostat.
Never connect external electric loads such as valves, fan coil units, etc.
If connected, Main PCB (Heater) can be seriously damaged.
(L) : Live signal from PCB to thermostat
27
(N) : Neutral signal from PCB to thermostat
L3
(C) : Cooling signal from thermostat to PCB
(H) : Heating signal from thermostat to PCB
(D) : DHW Heating signal from thermostat to PCB
(H)
(D)
ACCESSORIES INSTALLATION
73
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