LG PRARH1 Installation Manual page 10

Assembly Diagram
n 4 Way CST
Step1. Open front panel.
Step3. Open the cover of PRARH1 and connect wires.
Note: While connecting the PRARH1, attach insulation at the rear of the control box cover
where it receives screws as shown in Fig. A.
Please clean up the remaining wires after installation.
※ Wiring
Auxiliary Heater communication lines
(under AC24V,over AWG24)
These wires should not make
contact with high voltage lines.
To indoor unit PCB
(CN-PTC)
CAUTION
Check the attached direction to the indoor unit.
10 Auxiliary Heater Relay Kit
Aux heater Aux heater Aux heater
communication lines communication lines communication lines
Step2. Assemble PRARH1 with cabinet.
Step4. Assemble control box cover and front panel.
Aux heater
Aux heater
communication lines
communication lines
Aux heater
communication lines
Aux heater
communication lines
Fig. A
Control box cover
Insulation
screw