4-Way Cassette Type (U1 Type); Preparation For Suspending; Suspending The Indoor Unit; Placing The Unit Inside The Ceiling - Panasonic S-22MU1E5 Installation Instructions Manual

■ 4-Way Cassette Type (U1 Type)

3-32. Preparation for Suspending

This unit uses a drain pump. Use a carpenter's level to check
that the unit is level.

3-33. Suspending the Indoor Unit

(1) Fix the suspension bolts securely in the ceiling using the
method shown in the diagrams (Figs. 3-85 and 3-86), 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. 3-86 and Table 3-5 to make the holes in the
ceiling.
Table 3-5
Length
A
Type
22, 28, 36, 45, 56,
786
73, 106, 140, 160
(3) Determine the pitch of the suspension bolts using the
supplied full-scale installation diagram. The diagram and
table (Fig. 3-87 and Table 3-6) 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 3-6
Length
A
Type
22, 28, 36, 45, 56 121
73, 106, 140, 160 121
Drain outlet (other side)
Suspension lug

3-34. Placing the Unit Inside the Ceiling

This unit is equipped with the drain pump. Check a tape
measure or carpenter's level.
Before installing the ceiling panel, complete the work of
drain pipe and refrigerant pipe installation.
(1) When placing the unit inside the ceiling, determine the
pitch of the suspension bolts using the supplied full-scale
installation diagram. (Fig. 3-88)
Tubing and wiring must be laid inside the ceiling when
suspending the unit. If the ceiling is already constructed,
lay the tubing and wiring into position for connection to
the unit before placing the unit inside the ceiling.
Unit: mm
B C
745 860 to 910 860 to 910
Unit: mm
B C D E
171 256 180 130
171 319 180 130
Refrigerant tubing joint (liquid side)
(VP25)
Note: For DC Fan Tap Change Procedure for 4-Way
D
Refrigerant tubing joint (gas side)
Fig. 3-87
Supplied
screw
32
Cassette, see page 47.
Hole-in-anchor
Hole-in-plug
Concrete
Suspension bolt (M10 or 3/8")
(field supply)
Indoor Unit
View from top
A (suspension bolt pitch)
C (ceiling opening dimension)
Full-scale installation diagram
(printed on top of container box)
Insert
Fig. 3-85
Fig. 3-86
Unit: mm
Fig. 3-88