SYSVRF2 CASSETTE IM

7.3 Indoor unit power

7-3-1 A special power supply is employed for indoor units that is different from the outdoor units’ supply.

7-3-2 Use a universal indoor power supply and electricity leakage protection devices and operating switches for indoor units that connect to the

same outdoor unit.

7.4 Signal wire for communicate indoor unit and outdoor unit

This wire must be connected based on terminals’ numbers. A connection error could lead to a unit malfunction.

7.5 Jointing part of wire

Apply the attached thermal insulation material to seal pipe joints. Failure to seal will lead to condensation.

7.6 Wires in the panel

Wire the wire holder of the swinging motor according to (5.4). Install the panel.

7.7 Settings diagram for the terminal holder

Please refer to the nameplate in each indoor unit for the connective method.

Signal-phase power supply model

Fig. 7-1

Wire slot

Indoor power

Indoor unit

Signal wire for communicate

indoor unit and outdoor unit

Grounding line

Outdoor power

supply

RCCB

To outdoor/indoor

units comm. bus

To outdoor/indoor

units comm. bus

Indoor Unit Power

P Q E