Panasonic R410A service manual Installing the Drain Piping

6-4. Installing the Drain Piping

(1)Prepare standard hard PVC pipe for the drain and use the supplied drain hose and hose band to pre- vent water leaks.

The PVC pipe must be purchased separately. The transparent part allows you to check drainage. (Fig. 1-17)

Tighten the hose clamps so CAUTION their locking nuts face upward.

(Fig. 1-17)

(2)After checking the drainage, wrap the supplied packing and drain pipe insulator around the pipe. (Fig. 1-18)

	NOTE
1	Ensure 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 tube, as this may cause water to spray from the drain tube outlet. (Fig. 1-19)

If it is necessary to increase the height of the drain pipe, the section directly after the connec- tion port can be raised a maximum of 19-1/2". Do not raise it any higher than 19-1/2", as this could result in water leaks. (Fig. 1-20)

Do not install the pipe with an upward gradient from the connection port. This will cause drain water to flow backwards and leak when the unit is stopped. (Fig. 1-21)

Do not apply force to the piping on the unit side when connecting the drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig. 1-22)

Provide insulation for any drain pipe that is run indoors.

Refer to “ SUPPLEMENT ON DRAIN PIPING”.

1. Specifications

Transparent part for	Hose band	Adhere with
checking drainage	(supplied)	PVC adhesive.

Packing	Drain hose	Drain hose	Hard PVC pipe
		adapter	(not supplied)
(supplied)	(supplied)	(supplied)

Fig. 1-17

Drain insulator (supplied)

Fig. 1-18

Air bleeder

Fig. 1-19

11" or less (as short as possible)

19-1/2" or less

Fig. 1-20

Upward gradient prohibited

Fig. 1-21

Support pieces

Fig. 1-22

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