Sanyo 85464359982001 Installing the Drain Piping, indoor unit, The maximum permissible bend is

07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 41

3-16. 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. 3-68)

CAUTION

● Do not use adhesive at the drain connection port on the

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	Drain hose	Hard PVC	pipe
(transparent)			VP-25
	(supplied)	socket VP-25
		(not supplied)	(not supplied)

PVC adhesive

Bead Packing (supplied)

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.

● 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. 3-68)

(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. 3-69)

NOTE

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. (Fig. 3-70)

●If it is necessary to increase the height of the drain pipe, the 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. 3-71)

●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 when the unit is not operating. (Fig. 3-72)

●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. 3-73)

3-17. 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 about 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.

Fig. 3-68

Drain insulator (supplied)

Vinyl clamps

Fig. 3-69

Air bleeder

Prohibited

Fig. 3-70

11-13/16" or less

19-11/16" or less

Good

Fig. 3-71

Upward gradient

Prohibited

Fig. 3-72

Support pieces

Fig. 3-73

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