Panasonic U1 Serie Instructions D'installation page 7

3. HOW TO INSTALL THE INDOOR UNIT
■ 4-Way Cassette Type (U1 Type)
3-1. Preparation for Suspending
This unit uses a drain pump. Use a carpenter's level to check
that the unit is level.
3-2. Suspending the Indoor Unit
(1) Fix the suspension bolts securely in the ceiling using the
method shown in the diagrams (Figs. 3-1 and 3-2), 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. 3-2 and Table 3-1 to make the holes in the
ceiling.
Table 3-1
Length
A B
Type
36, 45, 50, 60,
786 745
71, 100, 125, 140
(3) Determine the pitch of the suspension bolts using the
supplied full-scale installation diagram. The diagram
and table (Fig. 3-3 and Table 3-2) 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 3-2
Length
E
Type
36, 45, 50, 60, 71 121
100, 125, 140 121
Drain outlet (other side)
(VP25)
Suspension lug
Unit: mm
C D
860 to 910 860 to 910
Unit: mm
F G H I
171 256 180 130
171 319 180 130
Refrigerant tubing joint (liquid side)
Note: For DC Fan Tap Change Procedure for 4-Way
Cassette, see page 21.
Hole-in-anchor
Hole-in-plug
Suspension bolt (M10 or 3/8")
(field supply)
Indoor Unit
View from top
A (suspension bolt pitch)
C (ceiling opening dimension)
Refrigerant tubing joint (gas side)
7
Insert
Concrete
Fig. 3-1
Fig. 3-2
Unit: mm
Fig. 3-3