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1,380
490
436, 448
1,442
1,480
1,560
335
310
1,460
1,495
130
240
16
18
(230x6)
(245x2)
L
M
No. of holes
A
B
C
D
E
F
G
H
I
J
K
Refrigerant tubing joint (narrow tube)
Refrigerant tubing joint (wide tube)
Upper drain port (O.D. 32 mm)
Bottom drain port (O.D. 26 mm)
Suspension lug
Power supply outlet (2-ø30)
Fresh air intake port (ø150)
Flange for the flexible air outlet duct (ø200)
Tube cover
Electrical component box
Flange for the air intake duct
(Option or field supply)
9
10
9
10
11
11
(Suspension bolt pitch)
(Suspension bolt pitch)
M-ø3.3
(Hole)
4-ø12
(Hole)
(Hole)
A (O.D.)
L-ø6
I
10
10
10
55
55
200
10
I
J
J
K
B
C
D
(150)
40
E
E
E
F
75
65
285
70
130
25
210
310
25
175
35
90
31
31
H (Duct suspension bolt pitch)
G (Ceiling opening dimension)
25
100
185
580
25
115
190
85
25
70
30
160
630
25
10
88
275
(Ceiling opening dimension)
260
(O.D.)
19
19
Inspection access
(450
×
450)
(Field supply)
Inspection access panel
Ceiling
14
Fig. 3-31
Fig. 3-33
Fig. 3-32
■
CONCEALED DUCT TYPE (model ADR)
3-9. Required Minimum Space for Instal-
lation 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
Table 3-3.
• It is recommended to provide inspection access (450 x 450
mm) for checking and servicing the electrical system.
• Fig. 3-31 and Table 3-4 show the detailed dimensions of the
indoor unit.
3-10. Suspending the Indoor Unit
Depending on the ceiling type:
• Insert bolt anchors as shown in Fig. 3-32.
or
• Use existing ceiling support or construct a suitable support
as shown in Fig. 3-33.
A (Suspension blt pitch)
Inspection
access
Electrical
component
box
Refrigerant
tubing
Air outlet duct flange
Indoor Unit
425 Type
436, 448 Type
A
1080
1560
Number of duct flanges
3
4
Model
Model
Dimension
Dimension
WARNING
• It is important to use extreme care in supporting the
indoor unit inside the ceiling. Ensure that the ceiling
is sufficiently strong to accept the weight of the unit.
Before hanging the unit, test the strenght of each
attached suspension bolt.
Ceiling tiles
Insert
Concrete
Hole-in-anchor
Hole-in-plug
Suspension bolt (M10 or 3/8’’)
(field supply)
Ceiling Support
EG
Table 3-3
Table 3-4
900
245
425
962
1,000
1,080
290
272
980
1,015
130
250
12
16
(180x5)
(245x1)