LG ACHH Series Installation Manual page 15

4
Additional wiring
Refer to the wiring diagram for on-site wiring. Only the main panel (HMI installed panel)
requires wiring at the site. Control box is already fully wired out of the box.
* On-site wiring location
- Pump output: DO3
- Modbus: CH4 A, B
- Pump interlock: UI6, G
- Remote alarm: DI3, GND
- HMI power: External board 12V, GND (When installing outdoor, use separate power cable
for indoor installation)
- Remote operation: DI1, GND
- Water Spray Output: DO6
Correct installation
When installing several chillers, install the circuit breaker by each chiller.
Circuit breaker Circuit breaker
Main Power Supply
INSTALLATION
Circuit breaker
15