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2. INDOOR UNIT INSTALLATION
2-1. ATTACHING THE INSTALLATION PLATE
• 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 3 in. (75 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 electrical cover.
4) Remove display panel, conduit cover and conduit plate.
5) Attach conduit pipe (for rear piping) / elbow joint (for right, left, or downward piping) to
conduit plate with lock nut. The thread of the installed conduit pipe / elbow joint appearing
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)
6) Process the end of ground wire (Fig. 3). Connect it to the ground terminal of electrical parts
box.
7) 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.
8) Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fastened.
9) Reinstall conduit plate, conduit cover and display panel.
10) According to the piping direction, remove the shaded part of the left side of box (Fig. 4)
or corner box (Fig. 5). Reinstall electrical cover, 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.
Power supply
208/230 V AC,
1phase 2wires.
60 Hz
Ground
INDOOR UNIT
Grounding
Terminal block
terminal**
Disconnect
switch*
208/230 V AC
1phase, 60 Hz
OUTDOOR UNIT
Grounding terminal**
Lead wire
• Make ground wire a little longer than
others. (More than 1-9/16 in. [40 mm])
Bind the line to the center hole.
Installation plate (1)
3-7/8 in.
(100 mm)
or more
Wall
Attachment screw (2)
Electrical cover
Fixing
screw
Display panel
• Connect wires to the appropriate terminals
• For future servicing, leave some slack in the connecting wires.
Conduit plate
19/32 in.
(15 mm)
Remove box for
piping on left
side of unit
Fig. 3
Ceiling
2-1/8 in. (54 mm) or more
5-1/8 in. (130 mm) or more for left/
left rear piping (using spacer)
Level
5-1/8 in.(130 mm)
Align the plumb
Insert
line with the
the
mark
.
scale. *
Plumb
Wall
Ø 3 in.
6/32-9/32 in.
(75 mm)
(5-7 mm)
Outdoor side
Grounding
Electrical box
terminal
Conduit cover
Lock nut
Conduit plate
or
Elbow joint
(for right, left, or downward piping)
Less than 3/8 in.
(10 mm)
Lock nut
Conduit pipe or
Conduit plate
elbow joint
(for right, left, or downward piping)
Fig. 1
Remove corner box
for piping on bottom
right side of unit
Box
Remove box for
piping on bottom left
side of unit
Fig. 4
4-3/8 in.
(110 mm)
or more
Wall
Center of
Align the
scale with
ø 3 in.
the line. *
(75 mm) hole
* Same for left hole.
Indoor terminal
block
Conduit pipe
(for rear piping)
Less than 1-3/16 in.
(30 mm)
Elbow joint
Fig. 2
Remove corner box for
piping on right side of unit
Corner box
Fig. 5
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