En-21
Connecting of wiring
61 61
(1) Remove the service covers and insulation sheet. And connect the wires to the terminal in accordance with the
terminal nameplate. (Fig. A, Fig. B)
(2) After connecting the wires, use binders to secure the wires. (Fig. B)
Connect the wires without applying excessive tension.
•
Fig1 A
Fig1 B
Terminal block
Binder
(Accessory)
Use the specified wire
type and connect the
wires securely.
Firmly secure the
binders so that the
wire terminals will not
receive external stress.
Please remove the excess.
Binder
Service cover
Terminal block
Binder
(Accessory)
(3) Secure the cables using the binders under the terminal blocks, and then secure the cables using the
binders attached to the base of the valves.
Binder
(Accessory)
Binder
(4) Be sure to install the insulation sheet after the wiring is complete.
Installation method of conduit plate
Please fix the conduit plate (accessory) as shown in the figure below.
Front connection
lock nut
Conduit plate
Cable (with conduit)
Lateral connection
Rear connection
Wiring method
61 51
The wiring example for Outdoor unit, Indoor units and Branch box is shown in figure.
For other connections, refer to Design&Technical Manual.
※
Select the disconnect switch appropriately depending
on the loads (total current value of connected units).
※
Select the disconnect switch appropriately depending
on the loads (total current value of connected units).
1 2 3
Single-phase
208/230V 60Hz
Max.26.5A
BRANCH BOX
Power supply cable
Breaker1
POWER
Breaker2
Breaker1: Eeath leakage breaker
Breaker2: Circuit breaker (MOCP)
Outdoor unit
1 2 3
Single-phase
208/230V 60Hz
Max.26.5A
BRANCH BOX
Power supply cable
Breaker1
POWER
Breaker2
Breaker1: Eeath leakage breaker
Breaker2: Circuit breaker (MOCP)
Outdoor unit
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
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
Indoor
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 BOX
Optional
terminal
(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)
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
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
Indoor
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 BOX
Optional
terminal
(Optional
terminal)
BRANCH BOX1
BRANCH BOX2
Breaker1
POWER
POWER
(Optional
terminal)
Breaker2
Connection cable
Connection cable
[Example 1]
[Example 2]
Junction box
9379069342-02_IM.indb 21
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