Phau Ntawv Qhia

En-8
3.6.2. Connection cable preparation
■
Connection cable
Ground (Earth)
wire
2-3/4 in (70 mm)
1-3/4 in (45 mm)
Conduit connector
Keep the ground (earth) wire longer than the other wires.
• Use a 4-core wire cable.
■
Remote controller cable
1-3/16 in (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 figure 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 : 3/8 in (10 mm)
Ring terminal
Sleeve
(3) Connect specified 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) Do not fix 2 power supply cables with 1 screw.
Tightening torque [lbf·in (N·m)]
M4 screw 11 to 16 (1.2 to 1.8)
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
Conduit connector
(power supply)
Power line
Outdoor
unit
Ground (Earth)
■
Remote controller cable
Y1 Y2
1
REMOTE CONTROL
Ex IN
2
Terminal
Remote
controller
cable
Remote controller
Ground (Earth)
*Ground (Earth) the remote controller if it has a ground (earth) wire.
(3) After wiring is complete, secure the remote controller cable, conduit connector.
Lock nut
Conduit connector
(power supply)
Cable tie (accessories)
Remote controller cable
Attach the conduit connector on
the wiring connecting port.
(The grommet edging and the
connection cable clamp are not
used.)
Lock nut
Conduit
connector
Do not bind the connection cable (power supply) and other cables together.
(4) Seal the cable outlet or other gaps with putty to prevent dew condensation or insect
from entering the electric control box.
(5) Replace the control box cover.
(6) Fix the conduit with the supporters as shown below.
Conduit
Indoor unit
Supporter
30 in
(756 mm)
or less
54 in
(1,360 mm)
or less
54 in
(1,360 mm)
or less
54 in
(1,360 mm)
or less
CAUTION
Do not bundle the remote controller cable, or wire the remote controller cable in paral-
lel, with the indoor unit connection wire (to the outdoor unit) and the power supply
cable. It may cause erroneous operation.