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2. Auto Humidify
Thermidistat Control will automatically adjust the humidity setpoint
according to the outdoor temperature. As the outdoor temperature
decreases, the humidity setpoint also decreases. Settings ranging from 1 to
9, 1 being the lowest and 9 the highest, will be visible to the homeowner.
See Fig. 17 for outdoor temperature/indoor humidity relationship in auto
humidify mode.
3. Humidify Off
The humidify function can be turned off completely. This does not
require changing existing setpoints.
To Select Humidification (programmable)
Press the soft key below the humidify icon to bring up humidity select screen.
Humidify options are only available when in Heating mode. When system is in
AUTO mode, humidify options are available if the last system operation was a
call for heat.
To Select Humidification (non−programmable)
Press the features button twice. The first press displays the outdoor air
temperature and the second press displays the humidity value and humidify
target.
Pressing the mode button shall cycle through the available humidification
selections (Off, Humidify and Auto Humidify).
Additional Humidify Comments
The humidifier is actually turned on when humidity is 1% below setpoint and
turned off when it reaches 1% above setpoint. This built−in hysteresis prevents
humidify output from toggling on and off when humidity level is near setpoint.