User Guide
Dehumidistat Disable automatically disables the dehumidistat function on the main control when outdoor
temperatures exceed 15°C (59
o
F) for a full 24 hour period. All other ERV features and functions operate normally
while the dehumidistat function is disabled.
Dehumidistat Re-Enable automatically re-enables the dehumidistat function if either the outdoor temperature
drops below 15°C (59
o
F) for a full 24 hour period or if the ERV is reset (unplugged for 30 seconds).
9
Dehumidistat Control
Only the DXPL02 control has
an adjustable Dehumidistat.
ERV's are not Dehumidifiers but may have a dehumidifying effect on the ventilation air only. This
greatly depends on climate, heating/cooling system being operated in the home and lifestyles
of the occupants.
NOTE: The Dehumidistat control feature will not work when the outside air is above 15°C (59°F)
therefore, this function is automatically disabled.
Homes in northern climates may experience high indoor humidity levels during the heating season.
This can become a problem in many well insulated, tight homes. Excessive condensation on the
windows is an indication of poor indoor air quality. This can result in mold and mildew and the
eventual degradation of the building structure itself.
Your ERV may reduce indoor humidity levels when the outdoor air is drier than the indoor air.
These conditions usually occur during the heating season when outdoor temperatures are less
than 15°C (59
o
F).
The DXPL02 control has an adjustable Dehumidistat which when activated jumps the ERV to high
speed ventilation. Once the humidity in the house is reduced, the ERV will revert back to its
previous speed or setting.
We suggest operating the ERV for the first few days without use of the Dehumidistat function to
observe if a further dehumidification effect will be required. The Dehumidistat operates in % of RH
(relative humidity) with 60 being high and 20 being low. If after a few winter days, further
dehumidification is required (the house is still too humid), set the humidity level to a lower
amount. The average person is comfortable between 30% and 50% RH. Refer to the "Setting the
Dehumidistat" section of the DXPL02 control instructions on how to set the Dehumidistat.
Dehumidistat Notes