LG Therma V AHUW096A2 - How to Wire Thermostat

Installation Manual 59
ENGLISH
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.
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat does not
require electric power supply.
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
(N) : Neutral signal from PCB to thermostat
(H) : Heating signal from thermostat to PCB
Thermostat
(L) (N) (H)
THERMOSTAT
(Default : 230 V AC)
17
L
BR
18
N
BL
19
L1
BR
20
L2
BK
(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
Step 5. Find terminal block and connect wire as below.
Mechanical type thermostat
Do not connect wire (N) as mechanical type thermostat does
not require electric power supply.
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.
Thermostat
(L) (N) (C) (H)
THERMOSTAT
(Default : 230 V AC)
17
L
BR
18
N
BL
19
L1
BR
20
L2
BK
WARNING
CAUTION
WARNING
CAUTION
Accessories Installation