the ZB110UV ensures precise ignition timing and robust flame monitoring for demanding combustion environments

This assembly is specifically calibrated for Williams Floor Furnaces models 4505A and 6505A

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

For rapid field installation

Siemens Building Technology 331-4811 Actuator 320720-756 the ZB110UV ensures precise ignitionFor 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