Built with industrial-grade relays and digital signal processing

perform system evacuation

Can I use a generic O-ring instead

including ignition sequences

without this precise signal

AERCO Boiler and Water Heater 27128-1 Pressure Switch Kit THPU32HP7Y Built with industrial-grade relays andAERCO 27128 1 Low Pressure Gas Switch Kit is built for dependable gas pressure monitoring in commercial boiler and water heater systems. This boiler low gas pressure switch interrupts the control circuit if inlet gas pressure drops below the set point, helping prevent improper combustion and unsafe operation. Designed for use with AERCO boilers and water heaters, it supports stable ignition and protects critical components in hydronic heating