ensuring the burner circuit is interrupted at the exact calibrated water level

When diagnosing LP boiler firing issues

This configuration is critical for paint spray booth applications

preventing short-cycling and protecting the heat exchanger from low-water events

operating within a temperature range of 14°F to 194°F

Carrier HH18HC350 Rollout Switch 322057-301 ensuring the burner circuit isThe Carrier HH18HC350 Rollout Switch is a critical safety component designed for high temperature monitoring in select Carrier, Bryant, and Payne gas fired furnaces and packaged RTU systems. This OEM flame rollout switch features a 350 degrees F fixed setpoint and a Single Pole Double Throw (SPDT) configuration. In the event of a "rollout" where flames escape the combustion chamber, the thermal sensitive coil triggers the manual reset rollout switch