Honeywell HE150, HE250, HE300 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.

WIRING CONFIGURATION
69-2576—01 2
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.
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