Installing The Duct; Suspending The Indoor Unit - Panasonic S-22MM1E5A Installation Instructions Manual

3-4. Installing the Duct

Connect the duct supplied in the field as shown in Fig. 3-7.
Flange
(Field supply)
Connection screw (x10)
Rectangular solid duct
(Field supply)
Air inlet side
Air inlet side
• Attach the duct and intake-side flange (field supply).
• Connect the flange to the main unit with 10 - ø3.1 (Hole)
screws.
• Wrap the intake-side flange and duct connection area with
aluminum tape or something similar to prevent air escaping.
CAUTION
When attaching a duct to the intake-side, be sure to attach
an air filter inside the air passage on the intake-side. (Use
an air filter whose dust collecting efficiency is at least 50%
in a gravimetric technique.)
The included filter is not used when the intake duct is
attached.
Air outlet side
• Connect the duct according to the air outside of the outlet-
side flange.
• Wrap the outlet-side flange and the duct connection area
with aluminum tape or something similar to prevent air
escaping.
CAUTION
● Be sure to insulate the duct to prevent condensation from
forming. (Material: glass wool or polyethylene foam, 25 mm
thick)
● Use electric insulation between the duct and the wall when
using metal ducts to pass metal laths of the net or fence
shape or metal plating into wooden buildings.
● Be sure to explain about the way of maintaining and cleaning
local procurements (air filter, grille [both air outlet and suction
grille], etc.) to your customer.

3-5. Suspending the Indoor Unit

Depending on the ceiling type:
• Insert suspension bolts as shown in the diagram. (Fig. 3-8)
or
• Use existing ceiling supports or construct a suitable
support as shown in the diagram. (Fig. 3-9)
AMP Air Conditioning
Flange
Insulation material
Main unit
(Field supply)
Air outlet side
Fig. 3-7
Hole-in-anchor
Concrete
Hole-in-plug
Suspension bolt
(M10 or 3/8")
(field supply)
Fig. 3-8
WARNING
It is important that you use extreme care in supporting
the indoor unit inside 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.
(1) When placing the unit inside the ceiling, determine the pitch
of the suspension bolts referring to the dimensional data as
shown in Fig. 3-1.
Tubing must be laid and connected inside the ceiling when
suspending the unit. If the ceiling is already constructed,
lay the tubing into position for connection to the unit before
placing the unit inside the ceiling.
(2) Screw in the suspension bolts allowing them to protrude from
the ceiling as shown in Fig. 3-8. (Cut the ceiling material, if
necessary.)
(3) Thread the 3 hexagonal nuts and 2 washers (field supply)
onto each of the 4 suspension bolts as shown in Fig. 3-10
and 3-11. Use 1 nut and 1 washer for the upper part, and 2
nuts and 1 washer for the lower part, so that the unit will not
fall off the suspension lugs.
Nuts and washers
(use for upper and
lower)
Double nuts
Suspension bolt
Hexagonal nut
Double nuts
9
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Ceiling tiles
Insert
Ceiling support
Fig. 3-9
Suspension bolt
Suspension lug
Notch
Fig. 3-10
Fig. 3-11