69-2576-01
Wiring Configuration
HE150 OR HE250
DIP SWITCH SETTING
RESET POWER AFTER
ANY DIP SWITCH CHANGES
HE300
H8908
10
OFF ON
20
30
40
50
60
M29938A
POWER IN
G OR W
C
OR
AIR PROVING
DEVICE
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.
CONNECT G TO HUMIDIFY WHEN THERE IS A FAN CALL.
CONNECT W TO HUMIDIFY WHEN THERE IS A HEAT CALL.
NEVER CONNECT BOTH. CONNECT C WHEN USING G OR W.
USE AIR PROVING DEVICE INSTEAD OF THE G/W CONNECTION
TO HUMIDIFY ANY TIME THE FAN IS OPERATING.
1
1
2
3
3
2
HE300 USES A LINE CORD PLUG.
CONNECT G TO HUMIDIFY WHEN THERE IS A FAN CALL.
CONNECT W TO HUMIDIFY WHEN THERE IS A HEAT CALL.
NEVER CONNECT BOTH. CONNECT C WHEN USING G OR W.
USE AIR PROVING DEVICE INSTEAD OF THE G/W CONNECTION
TO HUMIDIFY ANY TIME THE FAN IS OPERATING.
1
3
2
H8908
10
OFF ON
20
30
40
50
60
POWER IN
G OR W
C
AIR PROVING
DEVICE
1
2
3
OR
M29939A
FROM
HUMIDITY
CONTROL
HE150 OR HE250
DIP SWITCH SETTING
RESET POWER AFTER
ANY DIP SWITCH CHANGES
HE300
POWER IN
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.
1
1
HE300 USES A LINE CORD PLUG.
1
POWER IN
FROM
HUMIDITY
CONTROL
1
ADVANCED MODELS (HE150/HE250/HE300)
INSTALLATION ADDENDUM
Fig. 2. Wiring TrueIAQ, VisionPRO IAQ, or Prestige, using the intelligent control to program humidity calls with heat,
Fig. 1. Wiring H8908 to humidify only with a call for heat or fan.
cool, or on demand.
WIRING CONFIGURATION
M29940A
G (FURNACE)
G (THERMOSTAT)
ONLY NEEDED IF SYSTEM’S THERMOSTAT DOES NOT ISOLATE Y FROM G.
IF NEEDED, BREAK THE THERMOSTAT G TO SYSTEM G CONNECTION
AND ROUTE THROUGH HUMIDIFIER AS SHOWN.
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.
1
1
POWER OUT
24V FOR
ELECTRONIC
HUMIDISTAT
2
ONLY NEEDED IF SYSTEM’S THERMOSTAT DOES NOT ISOLATE Y FROM G.
IF NEEDED, BREAK THE THERMOSTAT G TO SYSTEM G CONNECTION
AND ROUTE THROUGH HUMIDIFIER AS SHOWN.
HE300 USES A LINE CORD PLUG.
1
2
HE150 OR HE250
DIP SWITCH SETTING
RESET POWER AFTER
ANY DIP SWITCH CHANGES
HE300
POWER IN
2
R
POWER IN
2
FROM
HUMIDITY
CONTROL
G (FURNACE)
G (THERMOSTAT)
1
POWER OUT
24V FOR
ELECTRONIC
HUMIDISTAT
R
FROM
HUMIDITY
CONTROL
ONLY NEEDED IF SYSTEM’S THERMOSTAT DOES NOT ISOLATE Y FROM G.
IF NEEDED, BREAK THE THERMOSTAT G TO SYSTEM G CONNECTION
AND ROUTE THROUGH HUMIDIFIER AS SHOWN.
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.
1
2
ONLY NEEDED IF SYSTEM’S THERMOSTAT DOES NOT ISOLATE Y FROM G.
IF NEEDED, BREAK THE THERMOSTAT G TO SYSTEM G CONNECTION
AND ROUTE THROUGH HUMIDIFIER AS SHOWN.
HE300 USES A LINE CORD PLUG.
1
2
M29941A
G (FURNACE)
G (THERMOSTAT)
1
POWER OUT
24V FOR
ELECTRONIC
HUMIDISTAT
HE150 OR HE250
DIP SWITCH SETTING
RESET POWER AFTER
ANY DIP SWITCH CHANGES
HE300
POWER IN
2
R
POWER IN
2
FROM
HUMIDITY
CONTROL
AFS
AFS
G (FURNACE)
G (THERMOSTAT)
1
POWER OUT
24V FOR
ELECTRONIC
HUMIDISTAT
R
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.
69-2576—01 2
BASIC MODELS (HE100/HE200)
A
PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED.
24 VAC WIRING.
2
TRANSFORMER
L1
POWER
(HOT)
SUPPLY
L2
1
FAN CONTROL
FURNACE
FAN
MOTOR
H8908
30
20
10
OFF ON
WIRING CONFIGURATION
HUMIDIFIER
40
50
60
2
WATER
SOLENOID
LEAD WIRE
M29945
L1
(HOT)
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION AS
REQUIRED.
24 VAC WIRING.
2
POWER
SUPPLY
FAN CONTROL
DPST
SWITCHING
RELAY
HL
C
2-SPEED
FAN
MOTOR
Fig. 6. Wiring H8908 with 2-speed fan motor.
Fig. 5. Wiring H8908 with fan interlock.
H8908
40
TRANSFORMER
30
50
20
10
60
OFF ON
2
HUMIDIFIER
WATER
SOLENOID
LEAD WIRE
M29942A
3 69-2576—01
WIRING CONFIGURATION
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
Fig. 7. Wiring H8908 with current-sensing relay.
HUMIDIFIER
H8908
AIR PROVING
DEVICE
2
20
10
OFF ON
30 40
50
60
TRANSFORMER
WATER
SOLENOID
LEAD WIRE
L2
1
L1
(HOT)
POWER SUPPLY. PROVIDE DISCONNECT MEANS
1
AND OVERLOAD PROTECTION AS REQUIRED.
24V WIRING.
2
M29944A
Fig. 8. Wiring H8908 in line with air proving device.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2011 Honeywell International Inc.
69-2576—01 M.S. 01-11
Printed in U.S.A.
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