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3. HOW TO INSTALL THE INDOOR UNIT
■
Concealed Duct Type (U Type)
3-1. Required Minimum Space for Installation and Service
●
This air conditioner is usually installed above the ceiling so that the
indoor unit and ducts are not visible. Only the air intake and air outlet
ports are visible from below.
●
The minimum space for installation and service is shown in
Fig. 3-1 and Table 3-1.
●
It is recommended that space be provided (17-23/32 × 17-23/32
in.) for checking and servicing the electrical system.
●
Fig. 3-2 and Table 3-2 show the detailed dimensions of the indoor
unit.
Table 3-1
Type
30-23/32 (780)
A (Length)
Number of duct flanges
Table 3-2
Dimension
A
Type
23-5/8
7, 9, 12, 15
26-1/16
(7-7/8 3) 27-9/16 30-23/32 11-13/32 10-5/16 26-25/32 28-5/32
35-7/16
18, 24
37-7/8
(7-3/32 5) 39-3/8
54-11/32
36, 48, 54
56-25/32
(9-1/16 6) 58-9/32 61-13/32 13-3/16
3-17/32
7, 9, 12, 15
18, 24
42-17/32 (1,080)
2
3
B
C
D
42-17/32 11-13/32 10-23/32 38-19/32 39-31/32
13/32
L-ø1/4
(Hole)
I
J
K
3/4
A (O.D.)
H (Duct suspension bolt pitch)
G (Ceiling opening dimension)
1-7/32
B
C
D
(Suspension bolt pitch)
E
E
Unit: in. (mm)
36, 48, 54
61-13/32 (1,560)
4
E
F
G
12-7/32 57-15/32 58-27/32
13/32
11
J
I
3/4
4-ø15/32
(Hole)
1-7/32
18-ø1/8
(Hole)
Inspection access
(17-23/32
17-23/32)
(Field supply)
1-9/16
(5-29/32)
2-15/16
E
F
2-9/16
Fig. 3-2
9
A (Suspension bolt pitch)
Min.
Indoor unit
9-27/32
Air outlet duct flange
Fig. 3-1
H
I
J
7-3/32
–
13-3/8
9-21/32
5-1/8
(9-21/32 1) 9-27/32
19-9/32
5-1/8
9-7/16
(9-21/32 2)
Refrigerant tubing joint (liquid tube)
Refrigerant tubing joint (gas tube)
Upper drain port (O.D. 1-1/4 in.)
Bottom drain port (O.D. 1-1/32 in.)
Suspension lug
Power supply outlet (2- ø1-3/16 hole)
Fresh air intake port ( ø5-29/32 hole)
Flange for the flexible air outlet duct ( ø7-7/8 hole)
Tube cover
Electrical component box
Flange for the air intake duct
(Option or field supply)
Inter-unit control wiring
12-7/32
31/32
8-9/32
31/32
6-7/8
1-3/8
5-1/8
2-3/4
11-7/32
Inspection access panel
Ceiling
Unit: in.
Electrical
component box
Inspection
access
17-23/32
17-23/32
Refrigerant
tubing
Min. 25-19/32
Unit: in.
Unit: in.
No. of holes
K
L
M
8
12
12
16
16
18
10
9
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