Installation Inside Of The Indoor Unit; Setting Method; Connecting Drycontact With Indoor Unit Pcba And Modbus Controller - LG Therma V AHUW056A3 Engineering Product Data Book

THERMA V
Split Type
10. Accessories

10.1.4 Installation Inside of the indoor unit

1. Loosen and remove two screws that secure the product.
2. Loosen two screws that secure the PCB to separate rear of the case from the PCB.
3. Connect the connection wires properly according to the connection method. (Refer to the instruction and set-up
description)
4. Set the switch according to the setting method. (Refer to the instruction and set-up description)
5. Secure PCB on adequate space inside of the indoor unit.
CAUTION
1. Install the product on flat surface and install anchoring screws at more than 2 places. Otherwise the
centralcontroller may not be anchored properly.
2. Do not tighten anchoring screws too tightly. It may cause deformation of the case.
3. Do not deform the case at random. It may cause malfunction of the central controller.

10.1.5 Setting method

After change any Dry contact setting, then you must press RESET switch to reflect the setting.

Connecting Drycontact with Indoor unit PCBA and Modbus Controller

Indoor unit PCBA
ON
1 2 3 4
CN_CC
Hydro Box Unit
Modbus
Controller
27