Sanyo TH2442 / CH2442 Specifications Increasing the Fan Speed, How to read the diagram, Type

1. Specifications

1-11 Increasing the Fan Speed

Electrical component box

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

Jumper cable

(Jumper cable installed)

2159_M_I

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

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

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

(4)Securely connect the jumper cable sockets between the disconnected fan motor sockets in step 2.

(5)Place the cable neatly in the box and reinstall the cover plate.

External Static Pressure

150

(Pa)

100

50

12 Type

line
Limit	line
Limit
	HT
	HH
	H
	L

(inAq)	150
0.5	(Pa)

0.4Pressure 100

0.3 Static

0.2External 50

0.1

18 Type

Limit	line
	line
Limit

HT

HH

H

L

(inAq)

0.5

0.4

0.3

0.2

0.1

0

200 300 400

Air Flow (CFM)

0	0				0
	200	300	400	500

Air Flow (CFM)

Indoor Fan Performance																			1980_U_I
			24 Type								200		36 Type						0.8
											(Pa)								(inAq)
									(inAq)			line
	150	line									150	Limit							0.6
PressureStaticExternal	(Pa)	Limit							0.5	PressureStaticExternal									0.5
	100								0.4		100		line						0.4
			line
		Limit										Limit							0.3
									0.3
								HT
	50								0.2		50							HT	0.2
							HH									H	H
					H				0.1						H				0.1
				L										L
	0								0		0								0
	300		500			700		900			500		1000
			Air Flow (CFM)										Air Flow (CFM)
									1982_U_I									1983_U_I
	NOTE			HT		: Using the booster cable

H : At shipment

1981_U_I

■How to read the diagram

The vertical axis is the external static pressure (Pa) while the horizontal axis represents the AIR FLOW (CFM). 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 636 CFM, while the external static pressure is 49 Pa at “H” position. If 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.

This problem may be solved by increasing the fan speed as explained above.

SM830082

I - 95