1
1-343
HOW TO INSTALL THE INDOOR UNIT
4-Way Cassette Type (Type U1)
Preparation for Suspending
This unit uses a drain pump. Use a carpenter’s level to check
that the unit is level.
Suspending the Indoor Unit
(1) Fix the suspension bolts securely in the ceiling using the
method shown in the diagrams (Figs. 1-7 and 1-8), by
attaching them to the ceiling support structure, or by any
other method that ensures that the unit will be securely
and safely suspended.
(2) Follow Fig. 1-8 and Table 1-4 to make the holes in the
ceiling.
Table 1-4
Unit: mm
Length
Type
A
B
C
D
36, 45, 50, 60,
71, 100, 125, 140
786
745
860 to 910
860 to 910
(3) Determine the pitch of the suspension bolts using the
supplied full-scale installation diagram. The diagram
and table (Fig. 1-9 and Table 1-5) show the relationship
between the positions of the suspension fitting, unit, and
panel.
Use the nut (field supply) and washer (supplied) for
upper and lower position of the suspension lug.
Table 1-5
Unit: mm
Length
Type
A
B
C
D
E
36, 45, 50, 60, 71
121
171
256
180
130
100, 125, 140
121
171
319
180
130
Hole-in-anchor
Hole-in-plug
Concrete
Insert
Suspension bolt (M10 or 3/8")
(field supply)
Note: For DC Fan Tap Change Procedure for 4-Way
Cassette, see page 1-351.
Fig. 1-7
Fig. 1-8
Fig. 1-9
Indoor Unit
View from top
B (suspension bolt pitch)
A (suspension bolt pitch)
C (ceiling opening dimension)
D (ceiling opening dimension)
D
E
A
B
C
33.5
Drain outlet (other side)
(VP25)
Suspension lug
Refrigerant tubing joint (liquid side)
Refrigerant tubing joint (gas side)
Unit: mm
SM830231-02̲Single̲欧州.indb 343
SM830231-02̲Single̲欧州.indb 343
2014/09/19 13:21:53
2014/09/19 13:21:53