Installing The Drain Pipe; Indoor Unit Drain Piping - Panasonic CZ-KPY3A series Installation Instructions Manual

Keep the length of the bolt
from the bracket to 40 mm
Ceiling
Paper model for
installation
Adjust to the same
height
WARNING
Tighten the nut and bolt to prevent unit from falling.

3-4. Installing the Drain Pipe

Hose clip (Accessory)
Heat insulator (Local
supply) (The thickness
must be at least 8 mm.)
It may be required to take off this part for checking or
servicing the drain up motor. Please do not glue.
Make sure that there is no clearance here.
NOT E
Make sure the drain pipe has a downward gradient (1/100 or
more) and that there are no water traps.

3-5. Indoor Unit Drain Piping

● During drain piping connection, be careful not to exert extra
force on the drain port at the indoor unit.
● The outside diameter of the drain connection at the indoor
unit is 32 mm.
Piping material: Polyvinyl chloride pipe VP-25 and pipe
fittings.
● Be sure to perform heat insulation on the drain piping.
Heat insulation material: Polyethylene foam with thickness
more than 8 mm (local supply).
● Drain piping must have down-slope (1/50 to 1/100); be sure
not to provide up-and-down slope to prevent reversal flow.
● Be sure to check no air trap on drain hose and to ensure
smooth water flow and no abnormal sound.
Indoor
unit
Pipe clamp
Down-slope
Air conditioner
body
Set screw for paper
model (4 pieces)
Open the ceiling board along the
outer edge of the paper model.
Fig. 3-3
Flexible hose with
heat insulator
(Accessory)
PVC pipe
(O.D. ø32)
(Local supply)
To be glued
Fig. 3-4
Upward routing
Trap
Fig. 3-5
Down-slope
Air Trap
● The height of drain may be possible up to 750 mm.
Drain port
Indoor unit
● When drain set piping, install as shown in the figure below.
Apply the head when connecting with the
confluence pipe. (about 100 mm)
Indoor
unit
Down-slope (1/50 ~ 1/100)
Drain Test
The air conditioner uses a drain up motor to drain water. Use
the following procedure to test the drain up motor operation.
● Connect the main drain pipe to exterior and leave it
provisionally until the test comes to an end.
● Feed water to the flexible drain hose and check the piping for
leakage.
● Be sure to check the drain up motor for normal operating and
noise when electric wiring is complete.
● When the test is complete, connect the flexible drain hose to
the drain port.
Feed water
Drain up motor
7
Upward-slope
No Air Trap
Fig. 3-6
Down-slope (1/50 ~ 1/100)
Elbow
Elbow
Fig. 3-7
Use VP30 or more for confluence
Fig. 3-8
Drain hose
Main drain pipe
Drain
Glue the joint
port
Drain hose connection
Use the clip (accessory)
Fig. 3-9