This piston damper actuator is versatile and can be used for both proportional and two-position applications depending on the control signal provided

Its intelligent changeover logic includes a 20-minute maximum run time before switching modes and a 2-minute purge period to dissipate conditioned air

always ensure the blower speed taps and jumpers are set to match the specific CFM requirements of the furnace being serviced to prevent premature heat exchanger fatigue

Key Benefits: Ensures accurate signal transmission between the Spence pressure pilot and the 4-inch main valve

Bard HVAC 8408-028BX Thermostat 321142-301 This piston damper actuator isFor contractors managing Bard HVAC systems, the Bard HVAC 8408 028BX Outdoor Thermostat is a critical component for precise temperature regulation. This unit, also identified as Outdoor TStat C12 2047 000, is engineered to accurately sense ambient temperature fluctuations, relaying essential data to your HVAC system for optimal heating and cooling adjustments. It's identical to the 8408 028 model, ensuring seamless integration and reliable performance