8" Round Zone Damper

Damper Specifications
Construction – 24 Ga. Galvanized Steel (4”-8”)
22 Ga. Galvanized Steel (9”-20”)
Linkage – Direct Drive
Sizes – 4”, 5”, 6”, 7”, 8”, 9”, 10”, 12”, 14”, 16”, 18”, 20”
Motor Voltage – 12VDC, 0.100A
Torque – 7.0 in/lbs, 112.0 in/oz, 0.79NM
Temperature Rating - 0 F to 150F Operating, -13 F to 175 F Storage
Humidity – 5% to 95% Non-Condensing
Damper Timing – Nominal 5 Sec. Powered Open-Closed
Connection - Modular RJ11, 2 Ports
Duct Pressure – Maximum 2”W.C.

The RDP series are galvanized steel, single blade dampers compete with a 12 Volt DC motor actuator. These dampers are shipped complete and ready for installation. The RDP can be installed in any position in any properly sized duct. All RDP dampers are rated for duct systems less than 2.0” W.C.

Dampers are available in 4”, 5”, 6”, 7”, 8”, 9”, 10”, 12”, 14”, 16”. 18” and 20” diameters. Dampers are ordered as RDPdd, using 2 digits for each dimension.

A 12 Volt DC damper motor, Model MP12M, powers the RDP. The motor powers the damper closed and open. The MP12M motor wires by simply plugging the motor in using the modular cord, supplied with each damper. The modular cord is a 25’ length of standard four (4) conductor telephone wire with RJ11 jacks on each end. The motor is complete with 2 jacks allowing you to daisy chain up to 10 dampers per zone.

The MP12M motor has been tested to over 1,000,000 cycles to provide long life. Even replacing the motor is a simple less than one (1) minute change by loosening the setscrew holding the motor onto the damper, slide the motor off the damper shaft, place a new one on and secure with the screw. 

The RDP motor also has a two-color Light Emitting Diode (LED) to indicate the damper position. When the LED is GREEN the damper is Open. When the LED is RED the damper is Closed. When the LED is not lit the motor is typically moving between open and closed. The motor cycles between open and closed in less than 5 seconds.