Bryant PREFERREDT A07044 Installation Instructions Manual page 45

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.
Dehumidification
Dehumidification is done only during cooling. Depending on type of equipment
used, compressor speed, blower speed, setpoint adjustment, and equipment
cycling are modified to provide added dehumidification. A dehumidification
setpoint (separate from humidification setpoint) is available to the homeowner. It
can range from 46% to 66% relative humidity. When actual humidity is higher
than setpoint, a dehumidification demand exists. The Thermidistat Control
responds by activating the dry contact (when enabled in Option 19). It may also
control the compressor and blower, depending on equipment type and
dehumidify selection choice. The 3 available selections are described below. A
mandatory 5 minute blower off delay will be enforced if there has been a call for
dehumidification during a cooling call. The amount of extra dehumidification
available is very dependent on the type of equipment in the home. Without a
variable- -speed blower, the system's ability to adjust dehumidification is very
limited.
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