Mitsubishi Electric PCA-A KA, Installation Manual, Page: 3 / 40

3
3. Installing the indoor unit
2. Installation location
3.1. Check the indoor unit accessories (Fig. 3-1)
The indoor unit should be supplied with the following accessories
(contained in the inside of the intake grille).
Accessory name Q’ty
1
Washer 4 pcs
2 Pipe cover 1 pc Large size (For gas tubing)
3 Pipe cover 1 pc Small size (For liquid tubing)
4 Band 4 pcs
5 Joint socket 1 pc Marked with “UNIT”
6 Socket cover 1 pc
7
Drain tubing cover 1 pc
8
Wired remote controller 1 pc
2.1. Outline dimensions (Indoor unit) (Fig. 2-1)
Select a proper position allowing the following clearances for installation and main-
tenance.
(inch)
Models W
A24, 30 50-3/8
A36, 42 63
Warning:
Mount the indoor unit on a ceiling strong enough to withstand the weight of
the unit.
2.2. Outline dimensions (Outdoor unit)
Refer to the outdoor unit installation manual.
3.2. Preparation for installation (Fig. 3-2)
3.2.1. Suspension bolt installing spacing
(inch)
Models A B
A24,30 48-11/16 50-3/8
A36,42 61-5/16 63
3.2.2. Refrigerant and drain tubing location
A
Front side outlet
F
Left drain tubing
B
Left side outlet
G
Gas tubing
C
Right side outlet
H
Liquid tubing
D
Independent piece (Removable)
I
Rubber plug
E
Right drain tubing
J
with Joint socket
5
In case of the rear pipe arrangement, make sure to remove the shaded portions
from the
D
independent piece. Then put the
D
independent piece back in initial
position.
(The heat exchanger might be clogged because of dust)
3.2.3. Selection of suspension bolts and tubing positions (Fig. 3-3)
Caution:
Install the indoor unit at least 8 ft. (2.4 m) above fl oor or grade level. For
appliances not accessible to the general public.
Using the pattern paper provided for installation, select proper positions for suspen-
sion bolts and tubing and prepare relative holes.
A
Pattern paper
B
Suspension bolt hole
C
Indoor unit width
Secure the suspension bolts or use angle stock braces or square timbers for bolt
installation.
D
Use inserts of 220-230 lbs. each.
E
Use suspension bolts of W 3/8 or M10 in size.
1 2 3
4 5 6
7 8
W
Min. 10-5/8
Min. 11-13/16
Max. 9-
13/16
9-5/16
Min. 19-11/16
26-3/4
A
9-5/16
B
1/16
2-15/16
3-1/8
12-5/8
26-3/4
1/16
7-1/2
1-13/16
1/4
9-3/16
9-11/16
7-1/16
7-7/8
9-3/16
9-11/16
3-3/8 1/16
3-3/8
5-7/16
4-15/16
7-1/2
1-13/16
4-15/16
6-5/16 7-1/2
2-3/4
3-1/8 Ø2-9/16 Ø3-15/16
Fig. 2-1
Fig. 3-1
70+6
Fig. 3-2
Fig. 3-3
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