AUTOMATIC OPPOSED BLADE DAMPERS (AOBD)
68-0246 10
CHECKOUT
After installin
and wirin
the dampers, turn on the power
suppl
and check out the s
stem. To check out the forced air
s
stem, see the s
stem specifications.
CAUTION
Equipment Damage Hazard.
Shorting can damage thermostat heat anticipator.
Avoid shortin
across s
stem control terminals when
checkin
s
stem operation.
IMPORTANT
To ensure accurate temperature control, do not
touch or breathe on the thermostat bimetal or ther-
mometer.
Determining Damper Position (See Fig. 15)
1.
Observe that damper is open when the crank arm points
toward the damper.
2.
Observe that damper is closed when the crank arm
points awa
from the damper.
Fig. 15. Determining damper position.
THE DAMPER IS OPEN WHEN THE CRANK ARM
POINTS TOWARD THE DAMPER.
THE DAMPER IS CLOSED WHEN THE CRANK ARM
POINTS AWAY FROM THE DAMPER.
1
1
REMOVE ACTUATOR COVER TO VIEW CRANK ARM POSITION.
1
M2281