8
Informational Display Screens
Dew Point Screen
The Dew Point Screen displays the dew point outside
and inside the crawlspace.
Temperature Screen
The Temperature Screen displays the temperature
outside and inside the crawlspace.
The ATMOX system evaluates the outside and inside temperature
to determine whether or not to ventilate the crawlspace. If the
temperatures are too cold or too hot based on several calculations,
the system will not ventilate with outside air. The ATMOX system
automatically adjusts its temperature parameters for different times of
the year.
Note: If the outside sensor is located in direct sunlight, it will often
heat the metal housing causing the sensor to read a temperature that
is higher than the ambient outdoor temperature. The overall outside
moisture calculations (dew point) will not be incorrect, so this generally
does not affect basic operation of the ATMOX system in determining
when fans should be running.
Dew point is the key to the ATMOX system. Dew point is calculated
from the temperature and humidity measurements and gives you the
best indicator of moisture in the air. A higher dew point means there
is more moisture in the air, and a lower dew point means there is less
moisture in the air. The ATMOX system does not activate ventilation
on an absolute number but instead uses a comparison of air in the
two locations. Under most circumstances, the fans will ventilate when
the outside dew point is 1 to 1.5 degrees lower than inside dew point.
There are some exceptions to this built into the software, for example
temperature parameters need to be met. There is also a time delay
of 15 to 30 minutes to conserve energy and avoid constant on and
off. This means that you will not always see instantaneous change in
operations.
