RESIDENTIAL HUMIDISTAT
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Modes of Operation
Form 16763
17
Heat-Only Mode
In Heat-Only Mode the humidistat will only turn on the humidifier when
the heat signal from the thermostat is on. This mode works well in winter
climates when humidity is only wanted during the heating season.
Basic Mode (Fan Wiring Required For This Mode, G, GF)
In Basic Mode the humidistat will turn on the humidifier when either a fan or
heat signal from the thermostat is on. This mode works well in any climates
that require humidity and in situations where humidity will be needed when
the heat is not running.
*It is recommended that Heat-Only Mode is activated during the summer
months in northern climates to prevent the humidifier from running during
the cooling season.
Eco Mode (Fan Wiring Required For This Mode, G, GF)
In Eco Mode the humidistat will turn on the humidifier when either a fan or
heat signal from the thermostat is on just like Basic Mode. Eco Mode also
adds the humidistat fan on signal. This will turn on if there has been 2 hours
of no heat or fan signals from the thermostat. The humidistat fan signal
will turn on the furnace fan for three minutes to check the humidity level. If
below the setpoint, the humidistat fan signal will stay on and humidify the
space for a maximum of 1 hour or until a heat or fan signal turns on from
the thermostat. A heat or fan signal from the thermostat will reset the 2 hour
timer. If the humidifier cannot meet the humidity needs via the humidifier fan
signal the humidistat will revert to Basic Mode to keep the fan from cycling
unnecessarily.
Performance Mode (Fan Wiring Required For This Mode, G, GF)
Performance Mode is for households that desire the most consistent
humidity levels. The humidistat will turn on the humidifier when either a fan or heat
signal from the thermostat is on. When the heat or fan signal from the
thermostat turns off, the humidistat will check humidity levels. If the humidity
level is below setpoint, the humidistat fan signal will turn on and humidify the
space for a maximum of 1 hour or until a heat or fan signal turns on from the
thermostat. Performance Mode also incorporates the 2 hour no activity timer
described in Eco Mode. If the humidifier cannot meet the humidity needs via
the humidifier fan signal the humidistat will revert to Eco Mode to keep the
fan from cycling unnecessarily.
