The RRD is a round damper that is easily inserted into rigid round ducts for retrofit zoning in forced air heating and cooling systems. This power open, power closed damper actuator is available in four sizes for 5 Inch, 6 Inch, 7 Inch and 8 Inch ducts

The RRD is a round damper that is easily inserted into rigid round ducts for retrofit zoning in forced air heating and cooling systems. This power open, power closed damper actuator is available in four sizes for 5 Inch, 6 Inch, 7 Inch and 8 Inch ducts

The RRD is a round damper that is easily inserted into rigid round ducts for retrofit zoning in forced air heating and cooling systems. This power open, power closed damper actuator is available in four sizes for 5 Inch, 6 Inch, 7 Inch and 8 Inch ducts

Easy Slide-In Installation

2.5 Volt Amp Allows for Many Dampers on One Zone

Quiet, Long Life Motor Automatically Shuts Itself Off in Full Open and Closed Positions

Gaskets Around Blade and Under Motor Housing for Low Internal Leakage and Very Low External Leakage

Range Stops with Easy Adjustment from Top of Motor

Easy to See and Reliable Mechanical Blade Position Indicator

Easy to Hook up with Conventional Thermostat Wire

Simple Manual Blade Positioning with Pushbutton Gear Release

Used with Modulating Automatic Round Damper for Bypass Control

The MARD Series Damper is a Power Opened/Closed, Zone or Bypass Damper

It is Usually Used in Light Commercial Applications on Systems Larger than 5 Tons that Do Not Exceed 2 Inch W.C at the Damper, But May be Used in any Residential System as Well

Freeze Protection Control Breaks the Y Circuit to a Compressor Below 36 Deg F and Remakes at 46 Deg F

Unidirectional Motor that Requires Single-Pole, Double-Throw Switching to Drive the Damper Open and Closed

It Uses a Wafer Switch to Power the Synchronous Motor for Only 30 Seconds While the Motor is Moving Between Open and Closed or Vice-Versa

Can be Operated by any Trol-A-Temp or Honeywell Zoning Panelit also Can be Operated by any SPDT Switch or Relay Contact

It Can be Controlled with Five or Three Wires, Depending on the Application

Provides a Low Voltage Power Source for any Honeywell Zone Control Panel or Damper

Powers up to 5 ZD or ARD Damper Motors and 14 RRD Damper Motors from One 40 Volt Amp Transformer

Mounting Options Include Plate or Foot Mounting