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■ Concealed-Duct Type (U Type)
3-18. 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. 3-56-1 and Table 3-3-1.
●
It is recommended that space be provided (450 × 450
mm) for checking and servicing the electrical system.
●
Fig. 3-57-1 and Table 3-4-1 show the detailed dimen-
sions of the indoor unit.
Table 3-3-1
Type
12, 16, 18
A (Length)
780
Number of
duct flanges
Table 3-4-1
Dimension
Type
12, 16, 18
662
25
962
1,442
36, 48, 60
90
DC̲Inverter̲Eng.indd 35
DC̲Inverter̲Eng.indd 35
Unit: mm
25
36, 48, 60
1,080
1,560
4
2
3
A
B
C
D
E
600
700
780
290
(200 × 3)
900
1,000
1,080
290
(180 × 5)
1,380
1,480
1,560
335
(230 × 6)
10
L-ø6
(Hole)
I
J
K
19
A (O.D.)
H (Duct suspension bolt pitch)
G (Ceiling opening dimension)
31
B
C
D
(Suspension bolt pitch)
E
E
E
A (Suspension bolt pitch)
Indoor unit
min. 250
Air outlet duct flange
F
G
H
I
262
680
715
180
272
980
1,015
130
(245 × 1)
310
1,460
1,495
130
(245 × 2)
Refrigerant tubing joint (liquid tube)
10
Refrigerant tubing joint (gas tube)
Upper drain port (O.D. 32 mm)
Bottom drain port (O.D. 26 mm)
11
Suspension lug
J
I
Power supply outlet (2-ø30)
19
Fresh air intake port (ø150)
Flange for flexible air outlet duct (ø200)
Tube cover
9
4-ø12
10
Electrical component box
(Hole)
11
Flange for air intake duct
(Option or field supply)
31
M-ø3.3
(Hole)
Inspection access
(450 × 450)
(Field supply)
40
(150)
F
75
65
Fig. 3-57-1
35
Electrical
component box
Inspection
access
450 × 450
Refrigerant
tubing
min. 650
Unit: mm
Fig. 3-56-1
Unit: mm
No. of holes
J
K
L
M
–
340
8
12
245
250
12
16
490
240
16
18
310
25
210
25
175
10
9
35
70
130
285
Inspection access panel
Ceiling
Unit: mm
GB
FR
DE
IT
PT
GR
ES
2007/07/25 13:21:41
2007/07/25 13:21:41
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