Resideo L4064B2228 Controller 321894-709 Key Benefits: Superior Chemical Resistance:

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 061227 200RB5T3 is a VLC (Valve Less Coil) model

this specific OEM model features an integrated breaker to prevent downstream component damage

water leakage from the collector box area

Resideo L4064B2228 Controller 321894-709 Key Benefits: Superior Chemical Resistance:The 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