14" round motorized damper - normally open

Jackson Systems “D” Series round, 2-position motorized dampers are ideal for zone control, make up air, air intake, exhaust air vents, and solar applications. These dampers are shipped to operate as powered closed/spring return open.

FEATURES
• 90º butterfly design
• Heavy duty spiral shell with rolled-in stiffening
beads for superior rigidity. Shell has one crimped
and one straight end, with side mounted motor
control box.
• Damper motors have been tested to 250,000 cycles.
• Motor drive end pivots are made of machined steel
for maximum durability and long life.
• Special windings and heavy-duty steel gearing provide
for long motor life and easy spring close operation.
Cross pin drive on the motor shaft provides positive
direct drive to damper blade without coupling or set
screw, allowing for quick and easy motor change.
• Designed to work with low-pressure systems less than 1” WC
• Driven by a synchronous type, 2-wire, 10VA, 24 volt motor
• Minimum position adjustable.

OPERATION
The powered closed/spring return open version is 2-position, 15 seconds close with power on, and 5 seconds spring open with power off.