Installation Instructions

23
Design of control wiring
1. All control wiring is 2-core and non-polarity wire.
2. Ensure use of shielded wiring in the following cases to prevent noise issues.
• Indoor-indoor / outdoor-indoor control wiring, Central control wiring.
Table-1 Control wiring between indoor and
outdoor units (L1, L2, L3),
Central control wiring (L4)
Note ∗1 : Total of control wiring length for all refrigerant circuits ( L1 + L2 + L3 + L4 )
Table-3 Remote controller wiring (L6, L7)
Wiring
Type
Size
Length
∗∗
∗∗
∗1
2-core, non-polarity
Shield wire
1.25 mm² : Up to 1000 m
2.0 mm² : Up to 2000 m
Wiring
Type
Size
Length
2-core, non-polarity
Shield wire
1.25 mm² to 2.0 mm²
Up to 100 m (L5)
Wire
Size
Length
2-core
0.5 mm² to 2.0 mm²
• Up to 500 m ( L6 + L7 )
• Up to 400m with of wireless remote controller in group control.
• Up to 200m total length of control wiring between indoor units ( L6 )
U3 U4
U1 U2
U1
U3
U2
U4
U1 U2
A B
Remote controller
Outdoor unit
Indoor unit
U3 U4
U1 U2
U1 U2
A B
U1 U2
A B
U1 U2
A B
U1 U2
A B
Central control
device
U1 U2
A B
Mini-SMMS
S-MMS
(Super modular multi system)
U3 U4
U1 U2
U5 U6
U1 U2
A B
Remote controllerRemote controller
U1 U2
A B
U1 U2
A B
U3 U4
U1 U2
U5 U6
L1
L5
L6
L6
L7
L7
L4
L2 L3
Header
unit
Follower
unit
Table-1
Table-2
Table-3
Table-1
AB AB AB AB AB AB
(A, B)
No.8No.7No.4No.3No.2 Indoor unit No.1
Remote
controller
Table-2 Control wiring between outdoor
units (L5) (S-MMS)
• Group Control through a Remote Controller
Group control of multiple indoor units (8 units) through a single remote controller
4 ELECTRIC WIRING