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2. INDOOR UNIT INSTALLATION
2-1. ATTACHING THE INSTALLATION PLATE
• Find a stud in the wall to attach installation plate (1) horizontally on the wall with screws (2).
• To prevent installation plate (1) from vibrating, be sure to install the attachment screws in
the holes indicated in the illustration. For added support, additional screws may also be
installed in other holes.
• When the indoor unit is to be attached to a concrete wall using recessed bolts, secure
installation plate (1) using 7/16 in. x 13/16 in · 7/16 in. x 1 in. (11 mm × 20 mm · 11 mm ×
26 mm) oval hole (17-3/4 in. [450 mm] pitch).
2-2. DRILLING
1) Determine where the holes will be located on the wall.
2) Drill a ø 2-9/16 in. (65 mm) hole. The outdoor side should be 6/32 to 9/32 in. (5 to 7 mm)
lower than the indoor side.
3) Insert wall hole sleeve (C).
2-3. CONNECTING WIRES FOR INDOOR UNIT
Note:
When the indoor unit is powered from the outdoor unit, depending on local code, a discon-
nect switch needs to be installed to a power supply circuit.
1) Remove the panel assembly. (Refer to 5-1.)
2) Place the upper part of the indoor unit on the installation plate.
3) Remove corner box and conduit cover.
4) Attach conduit pipe (for rear piping) / elbow joint (for right, left, or downward piping) to
conduit cover with lock nut. The thread of the installed conduit pipe / elbow joint appear-
ing inside should be less than 3/8 in. (10 mm). (Fig. 1) Elbow joint should appear less
than 1-3/16 in. (30 mm) outside. (Fig. 2)
5) Process the end of ground wire (Fig. 3). Connect it to the ground terminal of electrical
parts box.
6) Process the end of indoor/outdoor unit connecting wire (A) (Fig. 3). Attach it to the
terminal block. Be careful not to make mis-wiring. Attach the wire to the terminal block
securely so that its core cannot be seen, and no external force affects the connecting
section of the terminal block.
7) Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fas-
tened.
8) Secure indoor/outdoor unit connecting wire (A) and the ground wire with conduit cover.
Never fail to hook the claw of the conduit cover to the electrical box. Attach the conduit
cover securely. (Fig. 4)
9) According to the piping direction, remove the shaded part of the left side of box (Fig. 5)
or corner box (Fig.6). Reinstall corner box and front panel.
Remark:
* A disconnect switch
should be required.
Check the local code.
** Use a ring tongue termi-
nal in order to connect a
ground wire to terminal.
OUTDOOR UNIT
Power supply
208/230 V AC,
1phase 2wires.
60 Hz
Ground
INDOOR UNIT
Grouding
Terminal block
terminal**
Disconnect
switch*
208/230 V AC
1phase, 60 Hz
Grouding terminal**
Bind the line to the center hole.
Installation plate (1)
Level
3-5/16 in.
(84 mm)
or more
Wall
Align the plumb
Attachment screw (2)
line with the
mark
.
Ø 2-9/16 in.
(65 mm)
Fixing
screw
Conduit pipe
or
(for rear piping)
• Connect wires to the appropriate terminals
• For future servicing, leave some slack in the connecting wires.
Conduit cover
Less than 3/8 in.
(10 mm)
Lock nut
Conduit pipe or
elbow joint
Fig. 1
19/32 in.
(15 mm)
1 in.
(25 mm)
Lead
wire
• Make ground wire a little longer than
others. (More than 1-9/16 in. [40 mm])
Fig. 3
Box
Remove panel for
Remove panel for
piping on left side of
piping on bottom left
unit
side of unit
Fig. 5
Ceiling
2-3/8 in. (60 mm) or more
5-5/8 in. (142.5 mm) or more for left
and left back piping (using spacer)
3-5/16 in.
(84 mm)
or more
4 in.
(100 mm)
Insert
Align the
Center of
the
scale with
ø 2-9/16 in.
scale. *
the line. *
(65 mm) hole
Plumb
* Same for left hole.
Wall
6/32-9/32 in.
(5-7 mm)
Outdoor side
Lock nut
Conduit
cover
Indoor terminal
block
Elbow joint
(for right, left, or downward piping)
Less than 1-3/16 in.
(30 mm)
Elbow joint
(for right, left, or
downward piping)
Hook
Conduit cover
Corner box
1 in.
(25 mm)
Remove panel for
piping on right side of
Remove panel for
unit
piping on bottom side
of unit
Wall
Fig. 2
Fig. 4
Fig. 6
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