this unit provides the precise calibration required for demanding boiler environments

70W belly band with a 6

OEM Compatibility: Designed for use with Williams-brand gas valves for a seamless mechanical fit

the larger inducer blower-to-collector box gasket

or a "no flame" lockout code on the IFC

Laars Heating Systems R2080201 Kit 321894-708 this unit provides the preciseThe Laars Heating Systems R2080201 Kit is a field proven temperature control conversion kit engineered to transition existing FX05 controllers over to the more robust Watlow series. As a critical boiler control board upgrade, this kit resolves the obsolescence of the Laars 2400 439 part, ensuring that legacy hydronic systems maintain precise thermal regulation. For technicians managing commercial boiler maintenance, this FX05 to Watlow conversion