Resideo L4064B2228 Controller 321894-709 ensuring the combustion process only

ensuring the combustion process only occurs when the flue is properly evacuated

Key Benefits: Superior Chemical Resistance: The Teflon PFA seat is specifically chosen for its ability to withstand aggressive boiler treatments and thermal cycling

making it compatible with existing shell-band mounts and wiring harnesses without modification

The difference lies in the input and output calibration ranges

Built from high-fatigue resistant elastomers

Resideo L4064B2228 Controller 321894-709 ensuring the combustion process onlyThe Resideo L4064B2228 Fan and Limit Controller is a critical safety and operational component designed for forced warm air heating systems. Featuring a 5 inch bimetal sensing element, this controller provides precise monitoring of plenum temperatures to manage fan cycles and high limit safety cutouts. This unit functions with a fan switch that "makes" on temperature rise and a high limit switch that "breaks" on temperature rise, utilizing a 25F fixed