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When the outdoor temperature is 0 °C or less, do not use the accessory drain pipe
and drain cap. If the drain pipe and drain cap are used, the drain water in the pipe may
freeze in extreme cold weather. (Reverse cycle model only)
In the area with heavy snowfall, if the intake and outlet of outdoor units blocked with
snow, it might become diffi cult to get warm and it is likely to cause of the breakdown.
Please construct a canopy and a pedestal or place the unit on a high stand (local
confi gured).
5. INSTALLATION
5.1. Outdoor unit installation
Tapping screw
Front hooks
Rear hooks
Connector cover
Install the unit where it will not be tilted by more than 5°.
When installing the outdoor unit where it may exposed to strong wind, fasten it securely.
5.2. Outdoor unit wiring
1. CONNECTION DIAGRAMS
Control line
Power line
3
2
1
EARTH (GROUND)
Indoor unit
side terminal
Earth (Ground) line
2. CABLE PREPARATION
• When stripping off the coating of a lead wire, always use a special tool such as a wire
stripper. If there is no special tool available, carefully strip the coating with a knife etc.
Keep the earth (ground) wire longer than the other wires.
Earth (Ground)
wire
How to connect wiring to the terminal
Caution when wiring cable
(1)
Use crimp-type terminals with insulating sleeves as shown in the fi gure to
connect to the terminal block.
(2)
Securely clamp the crimp-type terminals to the wires using an appropriate tool
so that the wires do not come loose.
(3)
Use the specifi ed 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
screwdriver that is too small, otherwise, the screw heads may be damaged and
prevent the screws from being properly tightened.
CAUTION
Connector cover removal
Remove the tapping screw.
Installing the connector cover
(1) After inserting the four hooks, then
slide the cover.
(2) Tighten the tapping screw.
WARNING
Power supply
EARTH
(GROUND)
N
L
3
2
1
EARTH
(GROUND)
Outdoor unit
side terminal
Connection cable
and power cable
(5)
Do not tighten the terminal screws too much, otherwise, the screws may break.
(6)
See the table below for the terminal screw tightening torques.
Strip : 10mm
Screw with special washer
Crimp-type terminal
Wire
Terminal blocks
Tightening torque [N·m (kgf·cm)]
M4 screw
3. OUTDOOR UNIT
(1) Remove the outdoor unit connector cover.
(2) Bend the end of the cable as shown in the fi gure.
(3) Connect the end of the connection cable fully into the terminal block.
(4) Fasten the sheath with a cable clamp.
(5) Install the connector cover.
Control box
Connection cable
Earth (Ground)
screw
Connection cable
Cable clamp
Connection cable wiring
Run the connection cable to the rear of the outdoor unit within the A range of the arrows
shown in the figure.
(The connector cover becomes difficult to install.)
Before starting work, check that power is not being supplied to the indoor unit and
outdoor unit.
Match the terminal block numbers and connection cable colors with those of the indoor
unit.
Erroneous wiring may cause burning of the electric parts.
Connect the connection cable fi rmly to the terminal block. Imperfect installation may
cause a fi re.
Always fasten the outside covering of the connection cable with the cord clamp. (If the
insulator is chafed, electric leakage may occur.)
Securely earth (ground) the power cable.
Do not use the earth (ground) screw for an external connector. Only use for intercon-
nection between two units.
Crimp-type
terminal
Sleeve
Screw with
special washer
Crimp-type
terminal
Wire
1.2 to 1.8 (12 to 18)
Cable clamp
Earth (Ground)
screw
Power supply cable
Connection cable
CAUTION
En-4
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