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HE420A STEAM POWER HUMIDIFIER
69-1108—2 6
a. If set up correctly, the humidifier will begin oper-
ating. In “Test” mode, the humidistat will operate
for approximately one minute.
b. If the humidifier does not activate properly in
“Test” mode, refer to Appendix A.
4.
Set the humidistat. Refer to Humidistat Operating
Instructions for detailed instruction on initial settings.
a. If home is occupied, set the knob to “5”, or for
manual operation, set the knob to 35%.
b. If home is vacant, turn the knob to counterclock-
wise to “Off.”
INSTALL THE SAFETY CONTROL
SHUTOFF
Refer to the manual “Wiring Instructions for High-Capacity
Steam Humidifiers” (page 11) for complete instruction on
installing the Safety Control Shutoff.
CHECK THE HUMIDIFIER
OPERATION
After installation is complete, use the following steps to
check the humidifier operation:
1. Turn on the humidifier water supply.
2. Be sure the humidifier has power and then plug in
the humidifier.
3. Turn the Humidity Control to the Test position.
NOTE: If relative humidity is above 45% in the home, or
the outdoor temperature is above 50°F, a jumper
may need to be placed across the humidistat’s
OUT terminals to perform this checkout.
4. Check that the furnace blower comes on to circulate
the moist air. The blower may take as long as fifteen
minutes to start.
5. Refer to the Humidity Control owner’s manual for
operation.