AERCO Boiler and Water Heater 27128-1 Pressure Switch Kit R-134A This 240V/480V compatible component is

This 240V/480V compatible component is a direct fit for HVACR technical parts inventories

verify the orifice size and secondary regulator settings according to the manufacturer's technical manual

also designated as the Watts 740-2-40

This HVAC power relay is versatile and used across both heating and cooling platforms

AERCO Boiler and Water Heater 27128-1 Pressure Switch Kit R-134A This 240V/480V compatible component isAERCO 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