En-6
Earth
(Ground)
screw
Indoor unit terminal block
Disconnect switch
Please connect
it to the specified
terminal.
Outdoor unit or
Branch box
Terminal block for the optional remote controller
• To connect the indoor unit wires to the terminal correctly, refer to the figure for proper
length.
14AWG
Earth (Ground) wire
Conduit holder
Conduit connector
9-1/16
(230)
9-7/16
(240)
6.3. How to the install the indoor unit wire harness
(1) Remove the screws, then remove the conduit holder.
(2) Fasten the indoor unit wire harness to the conduit holder using the lock nut.
IMPORTANT: Refer to [6.1. Wiring system diagram] about the length of indoor unit wire
harness.
(3) Use the screws to install the conduit holder provide with the indoor unit.
(4) Remove the screws, then remove the cable clamper.
(5) Connect indoor unit wire harness to the terminal.
Refer to the wiring diagram
(6) Use the screws to install the cable clamper.
Lock nut
Conduit holder
Conduit connector
6.4. How to connect wiring to the terminals
Caution when wiring cable
When stripping off the insulation of a lead wire, always use a special tool such as a wire
stripper. If there is no special tool available, carefully strip the insulation with a knife etc.
(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the wires using an appropriate tool so that the
wires do not come loose.
Strip : 3/8 in. (10 mm)
Ring terminal
Sleeve
(3) Use the specified wires, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screw-
driver that is too small, otherwise, the screw heads may be damaged and prevent the
screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
Screw with special washer
Wire
Ring terminal
Terminal blocks
Wire
Screw with special washer
Ring terminal
(6) See the table below for the terminal screw tightening torques.
Tightening torque [lbf·in (N·m)]
M4 screw
11 to 16 (1.2 to 1.8)
CAUTION
• Attach the cable clamp firmly by holding the connection cable, and make sure that the
clamp is fixed securely.
Incomplete attachment of the cable clamp might cause a malfunction of the open
panel.
• Match the terminal block numbers and connection cable colors with those of the
outdoor unit.
Erroneous wiring may cause burning of the electric parts.
• Connect the connection cables firmly to the terminal block. Imperfect installation may
cause a fire.
• Always fasten the outside covering of the connection cable with the cable clamp.
(If the insulator is chafed, electric discharge may occur.)
• Always connect the ground wire.
• Do not use the earth screw of the indoor unit for the connection other than a specified
outdoor unit.
7. FINISHING
(1) Insulate between pipes.
• Insulate suction and discharge pipes separately.
• For rear, right, and bottom piping, overlap the connection pipe heat insulation and
indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap.
• For left and left rear piping, butt the connection pipe heat insulation and indoor unit
pipe heat insulation together and bind them with and vinyl tape so that there is no gap.
• For left and left rear piping, wrap the area which accommodates the rear piping
housing section with cloth tape.
• For left and left rear piping, bind the connection cable to the top of the pipe with
vinyl tape.
• For left and left rear piping, bundle the piping and drain hose together by wrapping
them with cloth tape over the range within which they fit into the rear piping
housing section.
(2) Temporarily fasten the connection cable along the connection pipe with vinyl tape.
(Wrap to about 1/3 the width of the tape from the bottom of the pipe so that water
does not enter.)
(3) Fasten the connection pipe to the outside wall with a saddle, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealer so that rain
water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
*Locally purchased
Pipe
Saddle*
Outside wall cap*
Sealer putty*
(Outdoors)
Wall
Unit: in. (mm)
Screw
9387082098-02_IM.indb 6
21/03/2016 10:12:54
