and AW series boilers and water heaters

The kit contains the integrated furnace control board

the HK06MB061 is the approved engineering update and direct substitute for the 1206256 and HK06WC061 models found in older mid-to-high efficiency units

Wide Operating Range: Rated for static pressures up to 400 psig

Code 1 Match System: Ensures tight length tolerances for balanced performance in matched belt sets

Siemens Building Technology 331-2906 Actuator 321894-708 and AW series boilers andThe Siemens Building Technology 331 2906 Actuator is a heavy duty, No. 4 pneumatic damper actuator engineered for precise control in commercial HVAC systems. This piston type actuator features a 5 to 10 psi nominal spring range and a robust 4 inch stroke, making it a reliable solution for modulating or two position control of outdoor air, return air, and exhaust dampers. Designed with a pivot mount configuration, it reduces binding and mechanical