Sanyo 85464359982001 Be careful since the fan will start when you, Increasing the Fan Speed

07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 42

CAUTION	Be careful since the fan will start when you
	short the pin on the indoor control board.

(4)When the check of drainage is complete, open the check pin (CHK) and remount the insulator and drain cap onto the drain inspection port.

3-18. Increasing the Fan Speed

If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure:

(1)Remove 4 screws on the electrical component box and remove the cover plate.

U(2) Disconnect the fan motor sockets in the box.

(3)Take out the booster cable (sockets at both ends) clamped in the box.

Indoor Fan Performance

Power supply outlet

Inter-unit control wiring

Fig. 3-74

(4)	Securely connect the booster cable sockets between the
	disconnected fan motor sockets in step 2 as shown in
	Fig. 3-75.
(5)	Place the cable neatly in the box and reinstall the cover

( 10-3psi)	7, 12 Type (in.Aq)		( 10-3psi)	18 Type	(in.Aq)
21.8		0.6	21.8			0.6

plate.

Electrical component box

Fan			Booster cable
					Booster cable
motor
	Fan motor socket
		(At shipment)		(Booster cable installed)

External Static Pressure

14.5

7.3

Limit

e
n
li
	li	n	e
Limit

HT

H

M

L

	re
0.4	ssuPre
0.2	nal Static
	Exter

14.5

7.3

	e
	n
	li
Lim	it
	Limit	li	n

0.4

e

0.2

HT

H

M

L

Fig. 3-75

0 0 0

177353

Air Flow (ft.3/minute)

Air

0

353 530 Flow (ft.3/minute)

How to read the diagram

The vertical axis is the external static pressure (psi, in.Aq) while the horizontal axis represents the air flow

( 10-3psi)

24 Type

36 Type (in.Aq)

(ft.3/minute). The characteristic curves for “HT,” “H,” “M” and “L” fan speed control are shown. The nameplate values are shown based on the “H” air flow. For the 24 type, the air flow is 635 ft.3/minute, while the external static pressure is 7.1 ⋅ 10-3psi at “H” position. If exter- nal static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed as explained above.

( 10-3psi) 21.8

re
Pressu	14.5
nal Static	7.3
Exter
	0

	e
	n
li
Limit
	e
	n
Limit	li

L

HT

H

M

(in.Aq)

0.621.8

re

0.4ssu 14.5 Pre

al Static

0.2n 7.3 Exter

0 0

	e
	n
	li					0.6
Limit
			n	e
		li			HT	0.4
	Limit
				H
						0.2
				M
				L
						0

353 706

Air Flow (ft.3/minute)

706 1059

Air Flow (ft.3/minute)

NOTE HT : Using the booster cable

H: At shipment

Fig. 3-76

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