4
2. Installing the indoor unit
Fig. 2-7
(mm)
F
G
B
B
C
*
E
*
D
C
A
11
2
Min. 20
1. 2. 3.
Check the pitch of the suspension bolt. (340 mm
×
811 mm)
1. Thread washers
1
2
(supplied) and their nuts (procured locally) onto the sus-
pension bolt in advance. (Fig. 2-7)
* Do this in the following order (from the top): nut, insulated washer
2
, washer
without insulation
1
, two nuts.
* Position insulated washer
2
with the insulated surface pointing down, as in the
figure.
2. Lift the unit into place, aligned properly with the suspension bolt. Pass the bracket
between washers
1
and
2
, which are already in place, and secure it. Do the
same in all four places.
* Make sure the suspension bolt extends 20 mm or more from the surface of the
ceiling. Otherwise you will not be able to install the cover panel (sold separately).
3. If the long opening in the bracket and opening in the ceiling do not align, adjust
them until they do.
A
Suspension bolt (3/8" or M10)
B
Ceiling surface
C
Nut (3/8" or M10)
D
Washer
2
(with insulation)
E
Washer
1
F
(Install with insulation facing down)
G
Measurement to upper face of bracket
4. Check that the four corners are all level, using a spirit level or clear plastic tubing
with water in it. (Fig. 2-8)
* Make sure that any slant in the unit after installation is less than 0.5 degrees
(approx. 6 mm on the long dimension of the unit).
5. Tighten all the nuts. (Fig. 2-9)
A
Suspension bolt (3/8" or M10)
B
Clear plastic tubing
C
Underside of bracket
D
Secure front panel here
E
Make these surfaces are flush with each other (0 - 3 mm)
2.5. Fresh air intake hole (Fig. 2-10)
At the time of installation, use the hole (knock out) located at the positions shown in
following diagram, as and when required.
A
Fresh air intake hole (Knock out)
B
4-ø2.8 burring hole
Note:
Make sure that the fresh air intake is no more than 20% of the entire air intake
(when the air flow speed is set to its highest setting).
Caution:
Linkage of duct fan and air conditioner.
If a duct fan is used, be sure to link it with the air conditioner when outside air
is taken in.
Do not run just the duct fan. Otherwise, condensation may form.
B
11
0
11
0
A
C
D E
4.
5.
Fig. 2-8
Fig. 2-9
ø100
ø
122
90
°
B
A
A
250
288.5
108
Fig. 2-10
(mm)
3. Refrigerant pipe and drain pipe
E
D
F
(56)
759
43
C
812
46
A
D
C
ø12.7
198
230
(10)
(96)
(20)
96
ø6.35
B
141
254
302
395
F
G
B
Fig. 3-1
3.1. Refrigerant and drainage piping locations
A
Drain pipe (Use PVC pipe O.D. ø26)
B
Ceiling panel (underside)
C
Refrigerant pipe (gas)
D
Refrigerant pipe (liquid)
E
Electrical box
F
Drain pan
G
Make sure these surfaces are flush with each other.
(mm)
(mm)