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EN
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Example of system wiring design
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 300 mm, 50A or less for 500 mm)
CN82
U2
U1
A B
U2
U1
U3 U4
L N
U3 U4
U1 U2
L N
N
L
B
A
8
3
2
1
4
1
2
3
4
5
6
7
8
9
U2
U1
A B
N
L
B
A
8
3
2
U2
U1
A B
N
L
B
A
8
3
2
U2
U1
A B
N
L
2
6
7
9
6
5
PMV Kit
(Option)
[Outdoor unit]
[Indoor unit]
Relay connector (Factory default : No connection)
Communication wiring between indoor and outdoor units
Communication wiring between indoor units
Connection of shield wire must be connected
(Connected to all connecting sections in each Indoor unit)
Indoor control
P.C. board
Remote controller
[Group control]
Earth
Earth
Earth
Earth
Earth
Earth
(Option)
Outdoor power supply
MCY-MAP***HT
: 1N ~ 50 Hz, 220 V-240 V
MCY-MAP***HT2D : 1N ~ 60 Hz, 220 V
Central remote controller power supply
1N ~ 50 Hz, 220 V-240 V
1N ~ 60 Hz, 220 V
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)
7
Installation of outdoor unit
When using the outdoor unit under the following conditions, it is necessary to set up DIP switch on the outdoor unit
interface P.C. board.
CAUTION
When anyone of the following condition is applied, set up DIP switch.
1. When using PMV Kit in the MINI-SMMS system
2. When using the indoor unit under high humidity condition
Setup method
• Turn on DIP switch [SW08] on the interface P.C. board of the outdoor unit.
[Reference]
Indoor side: 27 °C dry bulb temperature
24 °C wet bulb temperature
Operation time 4 hours or more.
SW11
1
ON
2 3 4
SW12
1
ON
2 3 4
SW06
1
ON
2 3 4
SW07
1
ON
ON
ON
ON
2 3 4
SW09
SW08
1
1
2 3 4
SW10
1 2 3 4
SW13
1
ON
2 3 4
SW14
1
ON
2 3 4
Outdoor unit interface P.C. board
Switch [SW08]
31-EN
32-EN
