BTU VENTILATION CORPORATION
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OFFICE 888-884-8070
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FAX 218-346-7485
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www.btucorp.com
XT-70 Control Panel
28
HMI HUMIDITY CONTROL:
5.10
The HUMIDITY CONTROL screen allows the user to make adjustments to the humidity control.
Caution: it is
never recommended to control humidity using a evaporative cooling cell.
Humidity control should be
achieved by controlling the water supply to centrifugal head humidifiers. The humidifiers should be wired so that
the spinning head will come on when the fans are running. The pump should be controlled by the Humid 1 and
Humid 2 outputs. Humidifiers can be tested with the fans running by using the MOA switches and switching the
humidifier to Manual.
Depending upon the condition of the potatoes, many different setting could be used for the humidity control.
Contact the local dealer for information on setting up humidity control.
The cell has up to four different operation modes. Each of the centrifugal humidifier has three types of control.
Caution:
when operating in the high humidity ranges, 95-100 %, great care should be used and frequent
checks on the humidity sensor should be done. The plenum should be visually checked daily to deter-
mine the amount of free water in the plenum.
The XT panel design was drawn from years of field experience, which led to creating humidity control that sets a
new standard for the industry. A bad, saturated or out-of-calibration humidity sensor can cause many problems
with old-style humidity controls.
The XT panel guards against these issues by having a failsafe Off mode of operation. An On time should always
be programmed in. This On time acts as a minimum setting for the humidifiers. Thus, even if the humidity is
