Weil McLain 510-811-221 Pilot Assembly Kit Refrigerant A faulty switch often triggers

A faulty switch often triggers "low pressure" or "stuck open" alerts on Lennox communicating thermostats

or a "no heat" condition where the pressure switch fails to close due to insufficient draft

This well is precision-machined for 2-15/16" long bulbs with a 7/16" diameter

enabling technicians to scale system capacity by adding heating or cooling stages

Don't waste time on the job site trying to modify standard PVC or flex when this furnace air pipe is designed to meet exact factory airflow specifications and port connections for a drop-in install

Weil McLain 510-811-221 Pilot Assembly Kit Refrigerant A faulty switch often triggersThe Weil McLain 510 811 221 Pilot Assembly Kit is a critical OEM replacement part engineered specifically for Weil McLain CGi gas boilers (models CGi 25 through CGi 8). For technicians troubleshooting a boiler pilot light not staying lit, this kit provides a comprehensive solution by replacing the core ignition components. It includes the natural gas pilot burner, a precision calibrated pilot orifice, and the integrated pilot bracket, ensuring proper