LG PRARH0 Manuel D'installation page 8

3. Assembly Diagram
■ 1 Way CST
Step1. Open control front panel.
Step2. Assemble PRARH0 with cabinet.
※ Wiring
Auxiliary Heater
communication lines
(under AC24V)
To indoor unit PCB
(CN-PTC)
8 Auxiliary Heater Relay Kit
Step3. Open the cover of PRARH0 and connect wires.
Step4. Assemble control box cover and front panel.