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Precision Modulation: Engineered for negative pressure gas systems to provide accurate air-gas ratio control without mechanical lag
ensuring the mechanical connections and bulb sensitivity match original factory specifications
variable pitch sheave designed for precise HVAC blower speed adjustment and fan drive optimization
and outdoor elements
When should the external equalization be used
Resideo MARD-8 Damper 340155-7024 Precision Modulation: Engineered for negativeThe Resideo MARD 8 is a heavy duty 8 inch modulating automatic round damper designed for high performance bypass and zone control in commercial and residential HVAC systems. Built with a 22 gauge galvanized steel shell, this single blade damper features a male crimped and female uncrimped end for seamless integration with rigid or flexible ductwork. A primary application for this 3 wire motorized damper is managing bypass air in systems larger than
