Wiring And Water Piping For Unit; Electrical Wiring; Wire Specification - LG AHBW Series Installation Manual

4. Wiring and Water Piping for Unit

Procedures about water piping and electric wiring are described in this chapter. Water piping and water
circuit connection, water charging, pipe insulations will be shown for water piping procedures.
Accessories connection, such as electric heater, sanitary water tank, thermostat, 3way or 2way valves, etc
will be dealt in separated chapter.

Electrical Wiring

Power cable is a cable which is used to supply external electricity to the unit. This cable is generally
connected between external power source (such as main electric power distribution panel of user's house)
and the unit.
Procedure for wiring to the unit is four steps. Before starting wiring, check if wire specification is suitable
and read following directions and cautions VERY carefully.

Wire specification

Power cable specification : The power cord connected to the unit should be complied with IEC
60245 or HD 22.4 S4 (Rubber insulated cord, type 60245 IEC 66 or H07RN-F)
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
Terminal specification of power cable and related cautions :
Use round pressure terminals for connections to the power terminal block.
When none are available, follow the instructions below.
• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.)
• When connecting wiring which is the same thickness, do as shown in the figure below.
1 Phase(Ø)
Power wire
Round pressure terminal
Wiring and Water Piping for Unit
Installation Manual 37