depending on the specific seal material and system pressure

the EC3 controller is stand-alone

A normally open valve stays open until energized

625-inch diameter shafts

When troubleshooting common heating failures

Utica-Dunkirk 550001508 Draft Inducer R-448A depending on the specific sealIf you are troubleshooting a pressure switch lockout or dealing with a seizing blower wheel on a Utica or Dunkirk boiler, the Utica Dunkirk 550001508 Draft Inducer is the specific OEM replacement part required to restore proper exhaust sequencing. This high static furnace inducer motor is critical for purging the heat exchanger of residual combustion gases and establishing the negative pressure necessary to close the sail or pressure switch. Designed