8
■
English
4�
Wiring
Refer to the installation manual for the outdoor unit also�
WARNING
•
Do not use tapped wires, extension cords, or starburst connections, as they may cause overheating, electric shock, or fire.
• Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the
terminal block.) Doing so may cause electric shock or fire.
•
Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire.
CAUTION
When connecting the connection wire to the terminal block using a single core
wire, be sure to perform curling.
Problems with the installation may cause heat and fire.
Good
Wrong
1) Remove the front grille. (Refer to
“2� Removing and installing
the front grille” on page 11.)
2) Remove the conduit mounting plate and then secure the
conduit to the conduit mounting plate with the lock nut, as
shown in the illustration.
3) Strip wire ends (3/4 inch (20mm)).
4) Match wire colors with terminal numbers on the indoor and
outdoor unit’s terminal blocks and firmly secure the wires in
the corresponding terminals with the screws.
5) Connect the ground wires to the corresponding terminals.
6) Pull the wires lightly to make sure they are securely connected.
7) Attach the conduit mounting plate.
8)
Shape the wires so that the service lid fits securely.
9) Attach the front grille. (Refer to
“2� Removing and installing
the front grille” on page 11.)
10) Take care to ensure that all wiring between the indoor unit and
the outdoor unit has a consistent connection. Any splices can
cause communication errors.
Back
Wire retainer
Terminal block
Electrical wiring box
Shape wires so that
the service lid fits
securely.
Use the specified wire type.
(Illustration may differ from some models)
Conduit
mounting plate
Lock nut
Conduit
Claw
Seat the claw
onto this part
and secure
Strip wire ends
(3/4 inch
(20mm)).
3/4 inch
(20mm)
1
2
3
1 2 3
L
1
L
2
Firmly fix the wires with the
terminal screws.
Outdoor
unit
Indoor
unit
Firmly fix the wires with the terminal screws.
Use AWG16 if the connection wire
length is less than 33ft (10m), or
AWG14 if it is 33ft (10m) or more.
5�
Drain piping
1) Connect the drain hose, as described on the right.
• Avoid placing the end of the drain hose in a drainage
location that could cause bad odors or corrosive gas to
flow backward into the outlet.
• The drainage water may change color due to bacteria or
other organisms. Place in a location where the flow of
drainage water will not cause a problem.
• Minimize the number of bends in the drain hose as much
as possible.
If bending the drain hose, bend it gently.
2)
Remove the air filters and transfer some water to the
indoor heat exchanger by pouring water into the drain pan.
3)
Make sure that water flows out of the drain hose.
Make a downward slope
Getting higher
Wrong
Wrong
Containing waves
Wrong
With the end of the hose
in the drain outlet
Leave a gap of 1-15/16 inches (50mm) or
more at the end of the outlet
4)
If drain hose extension or embedded
drain piping is required, use appropriate
parts that match the hose front end.
5)
When extending the drain hose, use a
commercially available extension hose
with an inner diameter of 5/8 inch (16mm).
Be sure to thermally insulate the indoor
section of the extension hose.
Figure of hose front end
φ
5/8”
(
φ
16mm)
Indoor unit
drain hose
Extension drain hose
φ
5/8”
(
φ
16mm)
φ
5/8”
(
φ
16mm)
Heat insulation tube
(field supply)
Drain hose supplied
with the indoor unit
English
01_EN_3P654325-1B.indd 8
2021/08/27 13:37:34
