the AFRBUP is UL 2043 compliant and suitable for use in air plenums per NEC Section 300

With an automatic reset feature

Factory New OEM Quality: Ensures full compatibility with Danfoss valve bodies

This switch integrates seamlessly into the control loop

Lochinvar & A.O. Smith 100110696 O Ring Seal 322055-301 the AFRBUP is UL 2043The Lochinvar & A. O. Smith 100110696 O Ring Seal is a critical OEM replacement part engineered specifically for high efficiency boiler maintenance and commercial water heater service. This seal plate gasket is designed to provide a high tolerance, leak proof interface between the heat exchanger and the burner mounting plate. Constructed from high grade elastomers capable of withstanding the thermal cycling of hydronic heating systems, the 100110696