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

Industrial Grade Protection: Features automatic thermal overload protection to prevent winding failure during high-ambient operations

and AW series boilers and water heaters

Siemens Building Technology 331-2906 Actuator 321894-708 The kit contains the integratedThe 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