How To Wire Thermostat - LG THERMA V Installation Manual

1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 55

How to wire thermostat

Follow below procedures Step 1 ~ Step 5.
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. If it is Heating only thermostat, go to step 4. Otherwise, if it is Heating / cooling thermostat,
go to step 5.
Step 4. Find terminal block and connect wire as below. After connecting, go to step 5.
17 18
L N
THERMOSTAT
(Default : 230 V AC)
(L) (N)
Thermostat
(L) : Live signal from PCB to thermostat
(N) : Neutral signal from PCB to thermostat
(H) : Heating signal from thermostat to PCB
Step 5. Find terminal block and connect wire as below.
17 18 19
L N
THERMOSTAT
(Default : 230 V AC)
(L) (N)
Thermostat
(L) : Live signal from PCB to thermostat
(N) : Neutral signal from PCB to thermostat
(C) : Cooling signal from thermostat to PCB
(H) : Heating signal from thermostat to PCB
WARNING
19 20
L1 L2
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat does not
require electric power supply.
CAUTION
(H)
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.
WARNING
20
Mechanical type thermostat
L1 L2
Do not connect wire (N) as mechanical type thermostat does
not require electric power supply.
CAUTION
(C) (H)
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.
Accessories Installation
Installation Manual 55