Lochinvar & A.O. Smith 100277781 Control R-22 The Schneider Electric VT3335 is

The Schneider Electric VT3335 is a robust 3-way zone valve body designed for precision control in closed-loop hydronic systems

or excessive noise and vibration

Is this part compatible with non-Daikin compressors

Always verify the lead-end or shaft-end rotation requirement of your specific blower housing before installation

though you must also install the correct red-spring regulator kit and pilot orifice to complete the transition

Lochinvar & A.O. Smith 100277781 Control R-22 The Schneider Electric VT3335 isThe Lochinvar 100277781 Control (Model FB751 1251) is an integrated control board engineered specifically for Crest Heating Boilers. As a critical OEM replacement part, this module manages the firing sequence, ignition control, and safety parameters for high efficiency hydronic systems. This model is a direct boiler part replacement for units with serial numbers beginning with 4015, ensuring seamless integration with existing HVAC wiring harnesses and