51
UConcealed-Duct Type (U Type)3-22. Required Minimum Space forInstallation and ServiceThis 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. 3-91 and Table 3-4.It is recommended that space is provided (17-23/32
×17-23/32 in.) for checking and servicing the electrical system.Fig. 3-92 and Table 3-5 show the detailed
dimensions of the indoor unit.Table 3-4 Unit: inch (mm)
Type 26 36A (Length) 42-17/32 (1,080) 61-13/32 (1,560)Number of duct flanges 34ABCDEFGHIJK35-7/16 9-21/32
UH(W)2672R 37-7/8 (7-3/32×5) 39-3/8 42-17/32 11-13/32 2-23/32 38-19/32 39-31/32 5-1/8 (9-21/32×1) 9-27/32 12 16
54-11/32 19-9/32
UH(W)3672R 56-25/32 (9-1/16×6) 58-9/32 61-13/32 13-3/16 12-7/32 57-15/32 58-27/32 5-1/8 (9-21/32×2) 9-7/16 16 18
No. of
holes
DimensionTable 3-5 Unit: inch (mm)
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)
9
10
9
10
11
11
(Suspension bolt pitch)
)hctip tlob
noisnepsuS(
M-ø1/8
(Hole)
4-ø15/32
(Hole)
(Hole)
A (O.D.)
L-ø1/4
I
13/3213/32
23/31
23/5-28/
7
-
7
23/
5
-
2
23/31
IJJK
B
C
D (5-29/32)
1-9/16
E E E F 2-15/16
2-9/16
11-7/32
2-3/4
5-1/8
31/328-9/32
12-7/32
31/32
6-7/8
1-3/8
3-17/321-7/321-7/32
H (Duct suspension bolt pitch)
G (Ceiling opening dimension)
23
/13
61/5
1
-
3
23
/9
-
7
23/72-22
23/13
23/71-4
23/
51
-
7
23/11-3
23/13
61/3-14/3-2
6
1
/5-6
23/1361/31-42
23/31
23/51-3
61/3
1
-
01
)noisnemid gninepo gnilieC(
4/1-01
).D.O(
3/43/4
Inspection access
(17-23/32
×
17-23/32)
(Field supply)
Inspection access panel
Ceiling
Indoor Unit
Inspection
access
17-23/32
×
17-23/32
Air outlet duct flange
min.
9-27/32
.nim
4/3-51
min. 25-19/32
23/72-22
A (Suspension bolt pitch) Electrical
component box
Refrigerant
tubing
Unit: inch
.nim
23/72-9
Fig. 3-91Fig. 3-92LM