3Rd Party Controller - LG THERMA V Installation Manual

3rd Party Controller

The product can also be linked to 3rd party controller. 3
manually via RS3 remote controller or automatically itself by means of comparing the outside air
temperature and the pre-set temperature.
How to wire 3rd party controller
Follow below procedures step 1 ~ step 4.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish control box(Indoor) of the unit.
Step 3. Check if the harness(White) is inserted fully to the indoor unit PCB (CN_COM).
Step 4. Connect the 3rd party controller to terminal block 4(21/22) completely. (including Meter
interface module)
Indoor PCB
ACCESSORIES INSTALLATION
rd
party boiler can be controlled by
CN_MODBUS
85
21 22
A B
3 rd PARTY
CONTROLLER
(DC 5 V)
A B
rd
3 PARTY
CONTROLLER
or METER
INTERFACE(LG)