Panasonic WH-ADF0309J3E5CM Service Manual page 108

Make sure the drain pipe has a downward gradient (1/100 or more) and that there are no water traps.
CAUTION

Do not install an air bleeder as this may cause water to spray from the drain pipe outlet.
(1) Drain hose connection

The drain hose is connected below the refrigerant tubing.
CAUTION

Wrap the drain insulator (supplied) between the connection of the drain hose and tubing not to expose
the copper tubing.
Also, wrap the hose band together. Wrap the hose band with the drain insulator, where the screw is
located facing upward. Then, tighten the insulator with a vinyl tape not to cause the detachment.
If the tubing parts remain exposed, condensation may occur.

Be sure to use the supplied drain hose.

If other commercially available hose bands are used, the drain hose may become pinched or wrinkled
and there is danger of water leakage. Therefore be sure to use the supplied hose bands.

Connect the drain pipe so that it slopes downward from the unit to the outside.

Never allow water traps to occur in the course of the piping.

Insulate any piping inside the room to prevent dripping.

After the drain piping, pour an appropriate amount of water into the drain pan through the opening on the
side of the air discharge port. Check the water draining smoothly.
Air bleeder
Prohibited
Upper drain port
Downward slant :
Min. 1/100
Bottom drain port
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