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Installation Manual
EN-33
EN-34
Keep the rule of below tables about size and length of communication wiring.
Table-1
Control wiring between indoor and outdoor units (L1, L2, L3), Central control wiring (L4)
*1 Total of control wiring length for all refrigerant circuits ( L1 + L2 + L3 + L4 )
Table-2
Control wiring between outdoor units (L5) (Other system)
Table-3
Remote controller wiring (L6, L7)
Wiring
2-core, non-polarity
Type
Shield wire
Size / Length *1
1.25 mm
2
: Up to 1000 m
2.0 mm
2
: Up to 2000 m
Wiring
2-core, non-polarity
Type
Shield wire
Size / Length
1.25 mm
2
to 2.0 mm
2
Up to 100 m (L5)
Wiring
2-core
Size
0.5 mm
2
to 2.0 mm
2
Length
• Up to 500 m (L6 + L7)
• Up to 400 m with of wireless remote controller in group control.
• Up to 200 m total length of control wiring between indoor units ( L6 )
U3 U4
U1 U2
U1
U3
U2
U4
U1 U2
A B
U3 U4
U1 U2
U1 U2
A B
U1 U2
A B
U1 U2
A B
U1 U2
A B
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U1 U2
A B
U1 U2
A B
U3 U4
U1 U2 U5 U6
L1
L5
L6
L6
L7
L7
L4
3
L
2
L
Central
controller
This system
Other system
Table-1
Header
unit
Follower
unit
Table-1
Table-2
Table-3
Outdoor unit
Indoor unit
Remote controller
Remote controller
Remote controller
Group control through a remote controller
Group control of multiple indoor units (8 units) through a single remote controller
Connection of power wires and communication wires
Remove knockouts on the piping / wiring panel on the front of the unit or the panel on the bottom to get the power and
communication wires through the holes.
NOTE
Separate the power wire and communication wires.
B
A
B
A
B
A
B
A
B
A
B
A
(A.B)
Indoor unit No.1
No.2
No.3
No.4
No.7
No.8
Remote controller
Knockout for the communication wires
and refrigerant piping
2FAN_IM_DB04905901-00.book Page 17 Friday, October 24, 2014 3:19 PM
Summary of Contents for MCY-MAP0401TP Series
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