LG Therma V AHUW096A3 Installation Manual page 62

ACCESSORIES INSTALLATION
62
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 19
L N L1
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 L1
THERMOSTAT
(Default : 230 V AC)
(L) (N) (C)
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
20
!
L2
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat
does not require electric power supply.
(H)
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.
WARNING
20 !
L2
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat
does not require electric power supply.
(H)
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.