The Modulating Automatic Round Damper is a round damper with a 24-Vac, floating-control type modulating motor for bypass and zone damper control. It is constructed of 22-gauge galvanized steel and has male (crimped) and female (uncrimped) ends to connect to any rigid or flexible round duct. It is available in 5, 6, 7, 8, 9, 10, 12, 14, 16, 18 inch diameter sizes. The motor timing is 90 seconds open to closed. The MARD is used for bypass control when connected to the Static Pressure Switch (SPC). Although it can be used on any bypass application, it is recommended for systems larger than 2000 cfm. The MARD can also be used as a zone control damper connected to a zone control panel. Features:
Uses 90-second open to closed motor.
Can be used as a zone damper.
ML6161 is replacement motor.
Available in 5, 6, 7, 8, 9, 10, 12, 14, 16, and 18 in. diameter sizes.
Used with Static Pressure Control (SPC) for bypass applications.