preventing unauthorized adjustments while maintaining calibrated environmental conditions

interlocks

This kit ensures your 3-way universal solenoid continues to operate with no minimum pressure requirement

preventing wiring errors on-site

Ensure the unused primary lead is properly capped to avoid electrical shorts

Lochinvar & A.O. Smith 100166246 Pressure Switch Kit 321894-706 preventing unauthorized adjustments while maintainingThe Lochinvar & A. O. Smith 100166246 Pressure Switch Kit is a critical safety component designed for precise combustion air monitoring in high efficiency boilers and water heaters. As a veteran grade OEM replacement part, this kit ensures the integrated VFD blower or inducer fan is generating the correct static pressure before allowing the ignition sequence to proceed. It acts as a blower prover switch, effectively preventing the gas valve from