En-10
• Connect the remote controller wires to the primary unit.
Wired remote controller is recommended using simultaneous twin or triple connection.
*Earth (Ground) the remote controller if it has a earth (ground) line.
Wired remote controller cable
3-wire type only
Wired remote controller
Remote controller cable
Bus wire (Locally purchased,
remote controller cable)
Max length: 500 m
Red
White
Black
Indoor unit
(Primary)
Indoor unit
(Secondary)
Indoor unit
(Secondary)
3.6.2. Connection cable preparation
■
Connection cable
Keep the earth (ground) wire longer than the other wires.
Connection cable
20 mm
30mm or more
Earth (Ground)
wire
• Use a 4-core wire cable.
■
Remote controller cable
For 2-wire type
For 3-wire type
30 mm 30 mm
3.6.3. How to connect wiring to the terminals
■
Caution when wiring cable
To strip off the insulation of a lead wire, always use a special tool such as a wire stripper.
If there is no special tool, carefully strip off the insulation by using a knife or other utensil.
(1) Use ring terminals with insulating sleeves as shown in the fi gure to connect to the
terminal block.
(2) Securely clamp the ring terminals to the wires by using an appropriate tool so that the
wires do not come loose.
Strip : 10 mm
Ring terminal
Sleeve
(3) Connect specifi ed wires securely, and fasten them so that there is no stress applied on
the terminals.
(4) Use a screwdriver with an appropriate bit size to tighten the terminal screws. Using of
screwdriver with inappropriate bit size will damage the screw heads, and the screws
will not be tightened properly.
(5) Do not overtighten the terminal screws. Otherwise, the screws may break.
Screw with special washer
Wire
Ring terminal
Terminal blocks
Wire
Screw with special washer
Ring terminal
(6) Refer to the table for the terminal screw tightening torques.
(7) Please do not fi x 2 power supply cables with 1 screw.
Tightening torque [N·m (kgf·cm)]
M4 screw 1.2 to 1.8 (12 to 18)
3.6.4. Connection wiring
CAUTION
• Be careful not to mistake the power supply cable and connection wires when install-
ing.
• Install so that the wires for the remote controller will not come in contact with other
connection wires.
(1) Remove the control box cover
(2) Connect the connection cable.
Cover
Screws
■
Connection cable
12 3
Control line
Connection cable
(power supply)
Power line
Outdoor
unit
Earth (ground)
9379124119-03_IM.indb 109379124119-03_IM.indb 10 2019/2/22 16:51:372019/2/22 16:51:37
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