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E
F
F
G
En-5
Wall
Outdoor side
2-2. HOLE DRILLING
1) Determine the wall hole position.
2) Drill a dia. 2-15/16 in. (75 mm) hole. The outdoor side should be 3/16 to 1/4
in. (5 to 7 mm) lower than the indoor side.
3) Insert wall hole sleeve
K.
Unit suspension procedures
• Adjust the length of the bolt’s protrusion from the ceiling surface beforehand.
• Check the pitch of the suspension bolt
E. (12-1/8 × 41-3/8 in. (308 mm ×
1051 mm))
1) Install special washer
and their nuts F onto the suspension bolt
E
in
advance.
* Do this in the following order (from the top): nut
F, special washer with
cushion
, special washer , nut F, nut
G
.
* Position special washer, with cushion
with the insulated surface pointing
down,asinthegure.
2) Lift the unit into place, aligned properly with suspension bolt
E. Pass the
bracket between special washer, with cushion
and special washer ,
which are already in place, and secure it. Do the same in all four places.
* Make sure the suspension bolt
E extends 2-3/4 in. (70 mm) or more from
the surface of the ceiling. Otherwise you will not be able to install the grille
(optional).
* If the points for securing the grille are not ush with the ceiling surface,
water may condense, or the panel may not open/close.
3) If the long opening in the bracket and opening in the ceiling do not align,
adjust them until they do.
4) Check that the four places for securing the grille are all level using a spirit
level.
5) Tighten all the nuts.
2-3. DRAIN PIPING
• Use drain pipe B for drain piping. Be sure to connect the piping joints using
adhesive of polyvinyl chloride family to prevent leakage.
• Before drain piping work, remove the pipe cover, hose band, pipe band, and
spacer (cushion). Dispose of the spacer (cushion), as it will not be needed.
• Drain hose
is 21-5/8 in. (550 mm) long, so that drain piping exit can be
moved up. Cut drain hose
into appropriate length before connecting.
Hose band
Pipe band
Pipe cover
Indoor unit side
Cut within this area
Drain piping side
(Connect drain
pipe
B
)
ø2-15/16 in.
(ø75 mm)
3/16 to 1/4 in.
(5-7 mm)
21-5/8 in. (550 mm)
16-15/16 in. (430 mm)
Ceiling surface
Make sure these
surfaces are
ushwitheach
other (0 to 1/8 in.
(0-3 mm)).
Point for securing grille Point for securing grille
Drain pan
2-3/4 in.
(70 mm)
or more
4-13/16 in.
(122 mm)
Point for securing grille
Point for securing grille
Enlarged view
Suspension bolt (W3/8)
Make sure these
surfacesareush
with each other (0 to
1/8 in. (0-3 mm)).
Spacer (cushion)
1 2
1 Push
Secure
2 Secure 3 Position in the
center
Unit
Nutwithange(W3/8)
Special washer (with cushion, 4 pcs)
Special washer
Nutwithange(W3/8)
Nut (W3/8)
BH79A643H01_01En.indd 5 2021/05/06 17:37:21
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