and WeatherKing gas furnaces to ensure proper voltage draw and heat output

meeting stringent RFI and EMI standards for reduced electrical interference

While designed for Carrier systems

This unit is built for B-width cabinets

Siemens Building Technology 331-4811 Actuator 320720-756 and WeatherKing gas furnaces toFor veteran technicians managing air handler units and mixing boxes, the Siemens 331 4811 represents the industry standard for pneumatic reliability. This No. 3 Pneumatic Damper Actuator is engineered with a rugged, all metal body designed to withstand the harsh environments of mechanical rooms. Operating on a nominal 8 to 13 psi spring range, this unit provides precise, gradual, or positive actuation of HVAC dampers and air valves. The 331 4811