How To Install The Indoor Unit; 1-Way Cassette Type (D1 Type); Preparation For Suspending; Suspending The Indoor Unit - Panasonic S-22ML1E5 Installation Instructions Manual

3. HOW TO INSTALL THE INDOOR UNIT

■ 1-Way Cassette Type (D1 Type)

3-1. Preparation for Suspending

This unit uses a drain pump. Use a carpenter
that the unit is level.

3-2. Suspending the Indoor Unit

(1) The measurements of the ceiling hole and suspension bolt
positions should be as shown in Fig. 3-1.
The length of the suspension bolts should extend
a minimum of 15 mm beyond the bottom of the unit
suspension bracket. Refer to Fig. 3-6.
(2) Use the full-scale installation diagram (printed on the
package) to determine the suspension bolt pitch.
The positional relationships between the suspension
brackets and the unit, and between the brackets and the
ceiling panel, should be as shown in Figs. 3-1 & 3-2.
1,060 Suspension bolt pitch
1,190 Ceiling opening dimension
1,230 Suspension bolt pitch
Refrigerant tubing joint
(gas tube side)
216
Refrigerant tubing joint
(liquid tube side)
154
94
(3) Depending on the ceiling type:
● Insert suspension bolts as shown in Fig. 3-3
Hole-in-anchor
Hole-in-plug
Suspension bolt (M10 or 3/8")
(field supply)
'
s level to check
Unit: mm
Fig. 3-1
Drain connection port
(Be sure to connect
the supplied flexible hose.)
80 60 43
Power inlet
Unit: mm
Fig. 3-2
Concrete Insert
Fig. 3-3
or
● Use existing ceiling supports or construct a suitable support
as shown in Fig. 3-4.
WARNING
It is important that you use extreme care in supporting
the indoor unit from the ceiling. Ensure that the ceiling is
strong enough to support the weight of the unit. Before
hanging the unit, test the strength of each attached
suspension bolt.
(4) Cut the ceiling material, if necessary. (Figs. 3-1 and 3-2)
(5) If the system requires fresh air to be drawn into the unit,
cut and remove the insulation (both externally and
internally) at the location shown as

3-3. Placing the Unit Inside the Ceiling

(1) When suspending the unit, attach gauges A and B (with
packaging pad) to the indoor unit suspension brackets
using the supplied M5 screws (2 for each bracket) to
create the ceiling opening dimensions.
CAUTION
● Tubing and wiring work will be necessary inside the
72
ceiling after the unit has been suspended. Therefore,
if the ceiling is already installed, perform tubing and
wiring up to the connection position before suspending
the unit.
(2) Attach the special washers (supplied) and nuts (field
supply) to the suspension bolts (4 locations).
CAUTION
● Use 3/8" or M10 nuts.
● The length of the suspension bolts should be such that
there is clearance of at least 15 mm below the bottom
of the bracket, as shown in Fig. 3-7. If the suspension
bolts are too long, they will contact the ceiling panel and
louver motor cover, making installation impossible.
(3) Thread the 3 hexagonal nuts and 2 washers (field supply)
onto each of the the 4 suspension bolts as shown in Fig.
3-7. Use 1 nut and 1 washer for the upper side, and 2 nuts
and 1 washer for the lower side, so that the unit will not fall
off the suspension lugs.
8
Ceiling tiles
Ceiling support
A
in Fig. 3-5.
230
A
Fresh air intake
knock-out hole ø100
Fig. 3-4
Fig. 3-5