■ Concealed-Duct Type (US Type)
3-23. 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
the diagram. (Fig. 3-77)
● *H dimension means the minimum height of the unit.
● Select the *H dimension such that a downward slope of at
least 1/100 is ensured as indicated in "3-28. Installing the
Drain Pipe".
● The maintenance space marked with
when the installation box for signal output board (ACC-SG-
AGB) sold separately is used.
● The diagram shows the detailed dimensions of the indoor
unit. (Fig. 3-78)
23
15
(mark) is required
*
564 (Suspension bolt pitch)
38
126
194
155
22
120
40
14
824(Suspension bolt pitch)
Min. 200
or more
Flange for air
outlet duct
* Min. 100 mm or more for bottom air intake
640
27
80
143
10
44
238
30
32
Electrical
component box
Inspection
access
450x450
Refrigerant tubing
Min. 650 or more
Min. 20 or more
*Min. 20 or more
Ceiling
145
Unit: mm
Fig. 3-77
Fig. 3-78