Honeywell HE250 Thermostat User Manual

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Wiring Configuration  
INSTALLATION ADDENDUM  
ADVANCED MODELS (HE150/HE250/HE300)  
HE150 OR HE250  
HE300  
G OR W  
C
AIR PROVING  
DEVICE  
G OR W  
AIR PROVING  
DEVICE  
2
OR  
3
2
OR  
3
C
H8908  
H8908  
1
3
0
40  
30  
40  
2
0
50  
60  
POWER IN  
20  
10  
50  
60  
1
0
OFF  
ON  
OFF  
ON  
1
POWER IN  
DIP SWITCH SETTING  
RESET POWER AFTER  
ANY DIP SWITCH CHANGES  
1
2
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.  
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.  
1
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.  
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.  
3
USE AIR PROVING DEVICE INSTEAD OF THE G/W CONNECTION  
TO HUMIDIFY ANY TIME THE FAN IS OPERATING.  
3
USE AIR PROVING DEVICE INSTEAD OF THE G/W CONNECTION  
TO HUMIDIFY ANY TIME THE FAN IS OPERATING.  
M29938A  
Fig. 1. Wiring H8908 to humidify only with a call for heat or fan.  
HE150 OR HE250  
HE300  
1
FROM  
HUMIDITY  
CONTROL  
FROM  
HUMIDITY  
CONTROL  
POWER IN  
1
POWER IN  
DIP SWITCH SETTING  
RESET POWER AFTER  
ANY DIP SWITCH CHANGES  
1
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.  
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.  
1
HE300 USES A LINE CORD PLUG.  
M29939A  
Fig. 2. Wiring TrueIAQ, VisionPRO IAQ, or Prestige, using the intelligent control to program humidity calls with heat,  
cool, or on demand.  
6
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WIRING CONFIGURATION  
HE150 OR HE250  
HE300  
POWER OUT  
POWER OUT  
24V FOR  
ELECTRONIC  
HUMIDISTAT  
G (THERMOSTAT)  
1
24V FOR  
G (THERMOSTAT)  
1
ELECTRONIC  
HUMIDISTAT  
FROM  
HUMIDITY  
CONTROL  
FROM  
HUMIDITY  
CONTROL  
R
R
2
G (FURNACE)  
POWER IN  
G (FURNACE)  
2
POWER IN  
DIP SWITCH SETTING  
RESET POWER AFTER  
ANY DIP SWITCH CHANGES  
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.  
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.  
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.  
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.  
HE300 USES A LINE CORD PLUG.  
M29940A  
Fig. 3. Wiring to force the HVAC system fan on whenever humidity is needed (on demand).  
HE150 OR HE250  
HE300  
POWER OUT  
24V FOR  
ELECTRONIC  
HUMIDISTAT  
POWER OUT  
24V FOR  
ELECTRONIC  
HUMIDISTAT  
G (THERMOSTAT)  
1
G (THERMOSTAT)  
1
AFS  
AFS  
FROM  
HUMIDITY  
CONTROL  
FROM  
HUMIDITY  
CONTROL  
R
R
2
G (FURNACE)  
POWER IN  
G (FURNACE)  
2
POWER IN  
DIP SWITCH SETTING  
RESET POWER AFTER  
ANY DIP SWITCH CHANGES  
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.  
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.  
HE150/HE250 USES A 15 VA TRANSFORMER WIRED INTO 24V IN.  
HE100/HE200 USES A 10 VA TRANSFORMER WIRED INTO 24V IN.  
HE300 USES A LINE CORD PLUG.  
M29941A  
Fig. 4. Wiring to force fan on and prove airflow in the duct.  
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WIRING CONFIGURATION  
BASIC MODELS (HE100/HE200)  
HUMIDIFIER  
1
2
PROVIDE DISCONNECT MEANS AND  
OVERLOAD PROTECTION AS REQUIRED.  
24 VAC WIRING.  
H8908  
3
0
40  
TRANSFORMER  
2
0
50  
60  
L1  
10  
OFF  
ON  
(
HOT) POWER  
2
SUPPLY FAN CONTROL  
WATER  
L2  
SOLENOID  
LEAD WIRE  
1
FURNACE  
FAN  
MOTOR  
M29945A  
Fig. 5. Wiring H8908 with fan interlock.  
HUMIDIFIER  
1
2
POWER SUPPLY. PROVIDE DISCONNECT  
MEANS AND OVERLOAD PROTECTION AS  
REQUIRED.  
H8908  
24 VAC WIRING.  
3
0
40  
TRANSFORMER  
2
0
50  
60  
L1  
10  
(
HOT) POWER  
OFF  
ON  
2
FAN CONTROL  
DPST  
SUPPLY  
L2  
1
SWITCHING  
RELAY  
WATER  
2
-SPEED  
SOLENOID  
LEAD WIRE  
H
L
FAN  
MOTOR  
C
M29942A  
Fig. 6. Wiring H8908 with 2-speed fan motor.  
3
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WIRING CONFIGURATION  
H8908  
HUMIDIFIER  
3
0
40  
2
0
50  
60  
1
0
2
OFF  
ON  
TRANSFORMER  
1
L2 L1  
(
HOT)  
CURRENT  
SENSING  
RELAY  
WATER  
LO  
SOLENOID  
LEAD WIRE  
C
HI  
1
2
POWER SUPPLY. PROVIDE DISCONNECT  
MEANS AND OVERLOAD PROTECTION AS  
REQUIRED.  
24V WIRING.  
M29943A  
Fig. 7. Wiring H8908 with current-sensing relay.  
HUMIDIFIER  
H8908  
AIR PROVING  
DEVICE  
3
0
40  
2
0
50  
60  
1
0
OFF  
ON  
2
TRANSFORMER  
WATER  
1
SOLENOID  
LEAD WIRE  
L2 L1  
HOT)  
(
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
24V WIRING.  
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  
®
©
U.S. Registered Trademark  
2011 Honeywell International Inc.  
Toronto, Ontario M1V 4Z9  
customer.honeywell.com  
69-2576—01 M.S. 01-11  
Printed in U.S.A.  

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