Siemens DDC 550-430 Actuator R-22 helping your air handler maintain

helping your air handler maintain peak performance

the 74W12 is designed for horizontal mounting in Lennox furnace blower assemblies and air handlers

requiring a replacement HH680368

the thermostat controls a single valve for both heating and cooling

making it suitable for large commercial heating equipment

Siemens DDC 550-430 Actuator R-22 helping your air handler maintainThe Siemens DDC 550 430 is a high performance BACnet VAV Actuator designed for DDC terminal box controller applications. Operating on the BACnet MS TP protocol, this integrated unit provides precise, pressure independent control of VAV zone level routines. With a 44 lb in (5 Nm) nominal torque and a 90 second run time at 60 Hz, the Siemens OpenAir GDE series ensures reliable damper positioning for HVAC building automation. The on board differential