10
Damper
Damper function
Primary temperature regulation is carried out using a flow of outdoor air controlled by a
damper.
The supply air consists of a mixture of the air from the room and from outdoors. The
opening and closing of the damper is determined by a sensor that measures the
temperature of the supply air.
The damper automatically adjusts against closed or open to reach supply air
temperature at 21-22 °C. Damper mode is conditioned by the fact that the set point on
the control panel has been reached. This set point relates to the return air temperature
and can be set from 25 °C to 35 °C. (Learn more about this in section ”Set points”,
page 12.
A signal from a moisture meter (accessory) will cause the damper to close if there is an
AC current in the unit.
A signal from a smoke detector (accessory) will cause the damper to close immediately.
If the heating element is activated, the damper will be closed.
As the damper is not a spring-return damper, it will remain in position in the event of a
power failure.
Supply air temperature
