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• Communication wiring and central control wiring use 2-core non-polarity wires.
Use 2-core shield wires to prevent noise trouble.
• Connecting the closed end terminal of shield wire.
(Connected to all connecting sections in each unit)
• Use 2-core non-polarity wire for remote controller. (A, B terminals)
Use 2-core non-polarity wire for Multi port type FS unit and Single port type FS unit (Long piping model). (A, B terminals)
Use 2-core non-polarity wire for wiring of group control. (A, B terminals)
• In case of Single port type FS unit, control wire and power line wire between FS unit and indoor unit are the accessory parts of
FS unit. (Wire length : 6 m)
If the length between indoor unit and Flow selector unit exceeds 5 m, connect by using the Connection cable kit sold separately
(RBC-CBK15FE).
Restriction of control wiring
Be sure to keep the rule of below tables about size and length of control wiring.
L6
L7
L3
L5
L1
L4
L2
A BA BA B
L8
U1 U2
AB
U3 U4
U1 U2 U5 U6
U3 U4
U1 U2 U5 U6
U3 U4
U1 U2 U5 U6
U3 U4
U1 U2 U5 U6
U1 U2
AB
U1 U2
AB
U1 U2
AB
U1 U2
AB
U3 U4
U1 U2 U5 U6
U3 U4
U1 U2 U5 U6
U1 U2
AB
U1 U2
AB
U1 U2
AB
U1
U3
U2
U4
AB
Central
control
device
Header
unit
Header
unit
Header
unit
Follower
unit
Follower
unit
Follower
unit
Indoor
unit
Outdoor
unit
Remote
controller
Super modular multi system
Table-3
Table-1
Table-2
Table-3
Table-3
Table-1
Remote
controller
Remote
controller
Multi port type
FS unit and
Single port type
FS unit (Long
piping model)
Table-1 Control wiring between indoor and outdoor units (L1, L2, L3), Central control wiring (L4)
Wiring 2-core, non-polarity
Type Shield wire
Size/Length 1.25 mm
2
: Up to 1000 m/2.0 mm
2
: Up to 2000 m (*1)
(*1): Total length of Communication wiring length for all refrigerant circuits (L1 + L2 + L3 + L4)
Table-2 Communication wiring between outdoor units (L5)
Wiring 2-core, non-polarity
Type Shield wire
Size/Length 1.25 mm
2
to 2.0 mm
2
/Up to 100 m (L5)
Table-3 Remote controller wiring (L6, L7), Multi port type FS unit and Single port type FS unit
(Long piping model) wiring (L8)
Wiring 2-core, non-polarity
Type 0.5 mm
2
to 2.0 mm
2
Size/Length
• Up to 500 m (L6 + L7)
• Up 400 m in case of wireless remote controller in group control.
• Up to 200 m total length of control wiring between indoor units and Multi port type FS unit
and Single port type FS unit (Long piping model) (L6+L8)
• Up to 300 m (L6 + L7+L8)
• Up to 300 m (L7)
37-EN 38-EN