Damper Type - Observer TSTAT0201CW Installation Manual

Damper Type

Power Open/Closed (default)
Choose this selection for dampers that require power to
open and power to close.
Spring Return
This type of damper requires continuous power to remain
open, or to remain closed, depending on the type of damper
that is installed. A power open, spring closed damper should
be wired to the Common and Open terminals on the damper
control module. A power closed, spring open damper should
be wired to the Common and Close terminals on the damper
control module.
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