SystemAir VRF Series User Manual

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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
Grounding line
Outdoor power
supply
RCCB
RCCB
To outdoor/indoor
units comm. bus
To outdoor/indoor
units comm. bus
Indoor Unit Power
L
N
Indoor Unit Power
L
N
P Q E

SystemAir VRF Series Specifications

General

Brand	SystemAir
Model	VRF Series
Category	Air Conditioner
Language	English