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Honeywell HE150, HE250, HE300 Fig. 7. Wiring H8908 with current-sensing relay., Fig. 8. Wiring H8908 in line with air proving device.

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WIRING CONFIGURATION

Automation and Control SolutionsHoneywell International Inc.1985 Douglas Drive NorthGolden Valley, MN 55422Honeywell Limited-Honeywell Limitée35 Dynamic DriveToronto, Ontario M1V 4Z9customer.honeywell.com

® U.S. Registered Trademark

© 2011 Honeywell International Inc.

69-2576—01 M.S. 01-11

Printed in U.S.A.

Fig. 7. Wiring H8908 with current-sensing relay.Fig. 8. Wiring H8908 in line with air proving device.

M29943A

L1

(HOT)

L2 1

2

1

2

POWER SUPPLY. PROVIDE DISCONNECT

MEANS AND OVERLOAD PROTECTION AS

REQUIRED.

24V WIRING.

TRANSFORMER

CURRENT

SENSING

RELAY C

LO

HI

H8908

10

OFF ON

20

30 40

50

60

HUMIDIFIER

WATER

SOLENOID

LEAD WIRE

M29944A

L1

(HOT)

L2

1

2

1

2

POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

24V WIRING.

TRANSFORMER

AIR PROVING

DEVICE

H8908

10

OFF ON

20

30 40

50

60

HUMIDIFIER

WATER

SOLENOID

LEAD WIRE

Contents

Main INSTALLATION ADDENDUM 69-2576-01 Wiring Configuration POWER IN ADVANCED MODELS (HE150/HE250/HE300) Fig. 1. Wiring H8908 to humidify only with a call for heat or fan. FROM HUMIDITY CONTROL Fig. 3. Wiring to force the HVAC system fan on whenever humidity is needed (on demand). Fig. 4. Wiring to force fan on and prove airflow in the duct. BASIC MODELS (HE100/HE200) Fig. 5. Wiring H8908 with fan interlock. Fig. 6. Wiring H8908 with 2-speed fan motor. Fig. 7. Wiring H8908 with current-sensing relay. Fig. 8. Wiring H8908 in line with air proving device.