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OPERATION
MANUAL OPERATION
The position of the damper vane can always be
determined by looking at the indicator wheel. If the
word “open” is visible, the vane is open. If the word
“closed” is visible, the vane is closed.
Observe the following instructions in the event it is neces-
sary to change the damper vanes from closed to open
position. For example, if the cooling system is not zoned
but does use the same duct work as the heating system,
the damper vanes should be changed from the closed
position to the open position at the start of the cooling
season.
Be sure to change the vanes back to the open
position at the start of the heating season.
CAUTION
!
To change damper vane from closed to open position:
Loosen wing nuts and pull damper motor back from
duct a short distance. Rotate indicator wheel 90° in
either direction so that yoke on damper motor drops
into the two round holes on indicator wheel. Then
retighten wing nuts.
To change damper vane from open to closed position:
Loosen wing nuts and pull damper motor back from
duct a short distance. Rotate indicator wheel 90° in
either direction so that yoke on damper motor drops
into the two square holes on indicator wheel. Then
retighten wing nuts.