Design and Technical Manual

6. SYSTEM DESIGN
WIRING METHOD

Practical transmission wiring method is shown below.
Each terminal has to be connected the following rules.
1 2 3
1 2 3
1 2 3
Indoor
unit
Remote
controller
BRANCH BOX
REMOTE
CONTROL
1 2 3
Single-phase
208/230V 60Hz
Max.26.5A
BRANCH BOX
Power supply cable
Breaker1
POWER
Breaker2
Breaker1: Earth leakage breaker
Breaker2: Circuit breaker (over current)
1 2 3 1 2 3 1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3 1 2 3
1 2 3
1 2 3
1 2 3
1 2 3 1 2 3
Single-phase
208/230V
60Hz
Branch
box
(Primary)
Branch box (Secondary1
Outdoor unit
) Branch box (Secondary2)
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
unit
OUTDOOR UNIT
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor
Disconnect
switch
POWER
REMOTE
CONTROL
BRANCH BOX
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
REMOTE
CONTROL
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
REMOTE
CONTROL
BRANCH BOX
(Optional
terminal)
BRANCH BOX1
BRANCH BOX2
Breaker2
Breaker1
Single-phase
208/230V
60Hz
POWER
Breaker2
Breaker1
Single-phase
208/230V
60Hz
POWER
Breaker2
Breaker1
(Optional
terminal)
Connection cable
Select the disconnect switch appropriately depending
on the loads (total current value of connected units).
1 2 3
Central remote
controller
Example 1
1 2 3
1 2 3
1 2 3
Indoor
unit
Remote
controller
BRANCH BOX
REMOTE
CONTROL
Outdoor unit
1 2 3
Single-phase
208/230V 60Hz
Max.26.5A
BRANCH BOX
Power supply cable
Breaker1
POWER
Breaker2
Breaker1: Earth leakage breaker
Breaker2: Circuit breaker (over current)
1 2 3 1 2 3 1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3 1 2 3
1 2 3
1 2 3
1 2 3
1 2 3 1 2 3
Single-phase
208/230V
60Hz
Branch
box
(Primary)
Branch box (Secondary1) Branch box (Secondary2)
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
unit
OUTDOOR UNIT
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor
Disconnect
switch
POWER
REMOTE
CONTROL
BRANCH BOX
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
REMOTE
CONTROL
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
REMOTE
CONTROL
BRANCH BOX
BRANCH BOX1
BRANCH BOX2
Breaker1
Breaker2: Curcuit breaker (over current)
POWER POWER
Breaker2
Breaker1: Earth leakage breaker
Junction box
※
Select the disconnect switch appropriately depending
on the loads (total current value of connected units).
1 2 3
Central remote
controller
Connection cable
Example 2
- (06 - 44) -
SYSTEM DESIGN SYSTEM DESIGN