Sanyo XMHX1252, XMHX1852, CHDZR09053 Section directly after the connection port can be raised a

3-22. Installing the Drain Piping

(1)Prepare standard hard PVC pipe (O.D. 1-1/4") for the drain and use the supplied hose band to prevent water leaks. The PVC pipe must be purchased separately.

The transparent drain part on the unit allows you to check drainage. (Fig. 3-91)

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 figure at right, then secure it tightly with the hose band.

U● Do not use the supplied drain hose bent at a 90° angle. (The maximum permissible bend is 45°.)

●Tighten the hose clamps so their locking nuts face upward. (Fig. 3-91)

(2)After connecting the drain piping securely, wrap the supplied packing and drain pipe insulator around the pipe, then secure it with the supplied vinyl clamps. (Fig. 3-92)

NOTE

Make sure the drain pipe has a downward gradient (1/100 or more) and that there are no water traps.

●Do not install an air bleeder as this may

CAUTION cause water to spray from the drain pipe outlet. (Fig. 3-93)

Align the hose band with end of the hose, and tighten so that it does not contact the bead.

Drainage check				Hard PVC
section on drain port			Hard PVC	pipe
(transparent)	Drain hose			VP-25
		(supplied)	socket VP-25
			(not supplied)	(not supplied)
			PVC adhesive
	Bead	Packing (supplied)
		Fig. 3-91
	Drain insulator (supplied)

Vinyl clamps

Fig. 3-92

Air bleeder

Prohibited

Fig. 3-93

● If it is necessary to increase the height of the drain pipe, the

11-13/16" or less

section directly after the connection port can be raised a

maximum of 19-11/16". Do not raise it any higher than

19-11/16", as this could result in water leaks. (Fig. 3-94)

● Do not install the pipe with an upward gradient from the connec-

tion port. This will cause the drain water to flow backward and leak

Good

19-11/16" or less

when the unit is not operating. (Fig. 3-95)

● Do not apply force to the piping on the unit side when connecting

the drain pipe. The pipe should not be allowed to hang unsupport-

ed from its connection to the unit. Fasten the pipe to a wall, frame,

or other support as close to the unit as possible. (Fig. 3-96)

3-23. Checking the Drainage

After wiring and drain piping are completed, use the following proce- dure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water.

(1)Connect power to the power terminal board (R, S terminals) inside the electrical component box.

(2)Remove the tube cover and through the opening, slowly pour approx. 0.3 gal of water into the drain pan to check drainage.

(3)Short the check pin (CHK) on the indoor control board and oper- ate the drain pump. Check the water flow through the transparent drain port and see if there is any leakage.

50

Fig. 3-94

Upward gradient

Prohibited

Fig. 3-95

Support pieces

Fig. 3-96

W-3WAY_ECO-i_US.indd 50 2008/02/07 10:55:59