Installation Instructions

25
n Example of system wiring design
Connection of shield wire must be connected
(Connected to all connecting sections in each Indoor unit)
Relay connector (As shipment from factory : No connection)
Communication wiring between indoor and outdoor units
Communication wiring between indoor units
Indoor control
P.C. board
Remote controller
[Group control]
CN82
U2U1 A B
U2U1 U3 U4LN
U3 U4
U1 U2
LN
NL
BA
PMV Kit
(Option)
[Indoor unit]
[Outdoor unit]
Earth
Earth
Earth
Central remote controller power supply
1N~ 50Hz, 220 – 240V
1N~ 60Hz, 220V
Outdoor unit
Indoor unit
Remote controller
Central remote controller (Option)
Over current breaker (Fuse) switch
Earth leakage breaker
Main switch
Pull box
PMV Kit (Option)
Outdoor power supply
MCY-MAP###HT series : 1N~ 50Hz, 220 – 240V
MCY-MAP###HT2D series : 1N~ 60Hz, 220V
8
3
2
1
4
1
2
3
4
5
6
7
8
9
U2U1 A B
NL
BA
Earth
8
3
2
U2U1 A B
NL
BA
Earth
8
3
2
U2U1 A B
NL
Earth
2
67
9
6
5
(Option)
4 ELECTRIC WIRING
CAUTION
1. Keep the refrigerant piping system and the indoor-indoor/indoor-outdoor control wiring systems together.
2. When running power supplies and control wires parallel to each other, run them through separate conduits or
maintain a suitable distance between them.
(Current capacity of power wires: 10A or less for 300mm, 50A or less for 500mm)