The Nordyne 903106 Control Board is the essential OEM integrated furnace control for managing sequence of operation in Nordyne

or the furnace failing to progress past the initial purge cycle due to an open pressure switch

Reliable Fail-Safe: Integrated spring return normally open logic ensures continuous flow for freeze protection or bypass requirements during power interruptions

OEM Precision: Genuine Lochinvar 100111732 factory component ensures exact set-point calibration at -

The Nordyne 661049R Orifice is a precision-engineered #49 natural gas burner orifice designed for specific gas furnace manifold assemblies

United Electric SD6225-75 Brass Well 328140-751 The Nordyne 903106 Control BoardProfessionals in the field rely on the United Electric SD6225 75 to provide a rigid, pressure tight housing for temperature bulbs and capillaries. This brass thermowell is built for hydronic and process systems where maintaining a sealed boundary is critical during sensor maintenance. Featuring a 1 2" NPT process connection and a 4 inch immersion depth (4" BT), it ensures the sensor is positioned deep enough into the flow for accurate thermal transfer