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HUMIDIFIER OPERATION
The Intelligent Zoned Comfort System works with your Aprilaire Automatic Humidifier Control (AHC) to enhance the performance
of your whole house humidifier.
The HUM LED on the control will turn on when the humidifier is operating. Humidification, using a whole house humidifier, can
only occur when the heat is on, or when the fan has been set to operate continuously (FAN ON shown on the thermostat). Your
Intelligent Zoned Comfort System can also keep the fan running if the humidification need has not been met. If the AHC senses
that humidification is still required when the heating system is about to turn off, the Intelligent Zoned Comfort System will keep
your fan operating until the need is met, or for 15 minutes. To prevent rapid cycling of your HVAC equipment, the blower will be
operated for no less than 5 minutes.
SECTION A
SECTION B
SECTION C
100
20
0
50
55
INDOOR RELATIVE HUMIDITY (%)
OUTDOOR TEMPERATURE (°F)
SECTION A
VENTILATION DAMPER OPERATING LIMITS
90-713
SECTION A: Controller will not ventilate due to temperature extremes
SECTION B: Controller will ventilate according to timer settings
SECTION C: Controller will ventilate only when heating is on according to the timer settings