Installing The Drain Piping - Panasonic S-12MU1U6 Installation Instructions Manual

CAUTION
●
The indoor unit includes a drain pump. Be sure to use a
level gauge and verify that the unit is level.
●
Before inserting the ceiling material, complete as much
of the drain piping work and refrigerant tubing work as
possible.
(6) The distance between the unit and the opening of the
ceiling and the distance between the bottom
surface of the ceiling and the bottom surface of the
fl ange of the unit should follow the dimensions given
in Figs. 3-60 and 3-61.

3-16. Installing the Drain Piping

(1) Prepare standard hard PVC pipe (O.D. 1-1/4") for the
drain and use the supplied drain hose and hose band
to prevent water leaks.
The PVC pipe must be purchased separately. The
unit's transparent drain port allows you to check
drainage. (Fig. 3-62)
CAUTION
●
Do not use adhesive at the drain connection port on
the indoor unit.
●
Insert the drain pipe until it contacts the socket, as
shown in the fi gure at right, then secure it tightly with
the hose band.
●
Tighten the hose clamps so their locking nuts face
upward. (Fig. 3-62)
●
Do not use the supplied drain hose bent at a 90° angle.
(The maximum permissible bend is 45°.)
●
Check the drainage at the unit drain port
(transparent).
(2) After checking the drainage, wrap the supplied
packing and drain pipe insulator around the pipe, then
secure it with the supplied clamps. (Fig. 3-63)
NOTE
Make sure the drain pipe has a downward gradient (1/100
or more) and that there are no water traps.
VRF_Indoor_US.indb 24 VRF_Indoor_US.indb 24
2-1/8
Suspension bolts
Tubing side
Suspension bolts
Fig. 3-60
Fig. 3-61
Align the hose band with end of
the hose, and tighten so that it
does not contact the bead.
Drainage check
section on drain
Supplied
port (transparent)
drain hose
Packing (supplied)
Bead
Drain insulator (supplied)
Fig. 3-62
Drain insulator (supplied)
Fig. 3-63
24
2-1/8
Unit: in.
Ceiling
material
Hard PVC pipe
VP-25
PVC adhesive
(Field supply)
2011/09/30 12:23:06 2011/09/30 12:23:06