If you see significant oxidation on the pilot hood or if the pilot flame is lazy and yellow even after cleaning

or the system failing to initiate the burner circuit due to an "open" safety loop

The stainless steel case provides superior corrosion resistance

and Coleman HVAC equipment

This limit control is typically wired into the 24V safety pilot circuit

Schneider Electric (Erie) VS2222 Valve Body If you see significant oxidationThe Schneider Electric Erie VS2222 is a high performance 1 2 inch NPT zone valve body designed for demanding hydronic and steam applications. Engineered as a two way two position valve, this unit features a 2. 5 Cv rating, providing precise flow control for terminal unit applications including fan coils, baseboards, and small reheaters. This PopTop series valve utilizes a stainless steel stem and a high temperature EPDM paddle, ensuring reliable shut