Sanyo 85464359982001 Installing the Drain Piping, Indoor Fan Performance How to Read the Diagram

07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 45

3-21. Installing the Drain Piping

(1)Prepare standard hard PVC pipe (O.D. 1-1/4") for the drain and use the supplied drain socket to prevent water leaks. The PVC pipe must be purchased separately. When doing this, apply adhesive for the PVC pipe at the connection point.

(2)If connecting a drain joint (supplied) to the threaded drain port, first wrap the drain port threads with sealing tape, then connect the joint. (Fig. 3-83)

(3)After connecting the drain pipe securely, wrap insulator (field supply) around the pipe.

Sealing tape

Drain pan	Drain joint
	(supplied)

Drain opening

(25A or 1-11/32"male screw)

Fig. 3-83

Downward gradient

(4)Ensure the drain pipe has a downward gradient (1/100 or more) and prepare traps as indicated in Fig. 3-84.

(5)Also, in another part of the pipe arrangement, prepare traps with an inspection plug to clean dust or debris that may cause leaking of water. (Fig. 3-85)

(6)After connecting the drain piping, slowly pour water into the drain pan to check that the water drains smoothly.

3-22. Caution for Ducting Work

●This unit has high static pressure (applicable external static pressure Max. 24.2 ⋅ 10-3to 31.3 ⋅ 10-3psi (0.68 – 0.88

in.Aq). In the case of small pressure resistance (for instance, a short duct), install a damper for adjusting air flow volume as air flow volume / air flow noise increases.

●If the air conditioner is to be installed in a room such as an office or meeting room which needs a low sound level, provide a supply and return noise absorption chamber with an acoustic liner.

●Include an air filter (field supply) at the return duct.

Min. 1/100

Good

D

Not good

Fig. 3-84

Min. 3-15/16 in.

Min. 1-31/32 in.

Inspection plug

3-23. Indoor Fan Performance

How to Read the Diagram

The vertical axis is the External Static Pressure (psi, in.Aq) while the horizontal axis represents the Air Flow (ft.3/minute). The characteristic curve for the “H,” “Med,” and “Lo” fan speed control.

The nameplate values are shown based on the “H” air flow. Therefore in the case of 36 Type, the flow is 1059 ft.3/minute, while the External Static Pressure is 0.72 in.Aq at “H” position. If the external static pressure is too great (due to long extension of duct, for example), the air flow volume may drop too low at each air outlet.

								Fig. 3-85
(	10-3psi)					36 Type		(in.Aq)	(	10-3psi)			48 Type	(in.Aq)
	36.3							1.0		36.3	n	e		1.0
										Limit	li
			li	n	e
		Limit
	29.0									29.0
re						H		0.8	re					0.8
ssu									ssu				H
Pre						M			Pre				M
	21.8				L			0.6		21.8			L	0.6
tatic							H		tatic
nal S	14.5							0.4	nal S	14.5				0.4
Exter									Exter					H,M
	7.3						M			7.3
								0.2						0.2
														e
							e							lin
						Limit	lin						Limit
	0			883		1059	1236	0		0				0
										1059			1236	1412
					Air Flow (ft.3/minute)							Air Flow (ft.3/minute)

NOTE H : At shipment

Fig. 3-86

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