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

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

The stainless steel case provides superior corrosion resistance

its standard thread-in design and included split sleeve adapter make it interchangeable with most major HVAC manufacturers' standing pilot systems

or a ruptured internal diaphragm within the switch itself

Schneider Electric (Erie) VS2222 Valve Body This limit control is typicallyThe 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