How To Install The Indoor Unit; 4-Way Cassette Type (U1 Type); Preparation For Suspending; Suspending The Indoor Unit - Panasonic S-12MU1U6 Installation Instructions Manual

3. HOW TO INSTALL THE INDOOR UNIT

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4-Way Cassette Type (U1 Type)

3-1. Preparation for Suspending

This unit uses a drain pump. Use a level gauge 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
Type
31-1/32
12, 18, 24, 36
(788)
(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 fi tting, unit, and panel.
Table 3-2
Length
A
Type
4-29/64
12, 18, 24
(113)
4-29/64
36
(113)
Drain outlet(other side)
Suspension lug
3-3. Placing the Unit Inside the Ceiling
(1) When placing the unit inside the ceiling, determine the
pitch of the suspension bolts using the supplied full-
scale installation diagram. (Fig. 3-4)
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.
VRF_Indoor_US.indb 10 VRF_Indoor_US.indb 10
Unit: in. (mm)
B C D
28-15/32 34-27/32 34-27/32
(723) (885) (885)
Unit: in. (mm)
B C D E
6-13/16 10-5/64 8-17/64 3-15/32
(173) (256) (210) (88)
6-13/16 12-9/16 8-17/64 3-15/32
(173) (319) (210) (88)
(VP25) Refrigerant tubing joint(liquid side)
Note: For DC Fan Tap Change Procedure for
4-Way Cassette, see page 16.
Hole-in-anchor
Hole-in-plug
A (suspension bolt pitch)
C (ceiling opening dimension)
Refrigerant tubing joint(gas side)
Power supply outlet
Inter-unit control wiring
Fig. 3-3
Full-scale installation diagram
Supplied bolt
(printed on top of container box)
10
Concrete Inser t
Suspension bolt (M10 or 3/8")
(field supply)
Fig. 3-1
Fig. 3-2
Unit: in. (mm)
Unit: in. (mm)
Fig. 3-4
2011/09/30 12:22:56 2011/09/30 12:22:56