and then thread the screws into the housing until they contact the internal piston

Integrating a genuine Nortek 626422R ensures the HVAC safety control operates within exact manufacturer tolerances

Factory Calibrated: Set at -0

verify that the control board is delivering 120 VAC to the harness during the ignition trial

Raypak 005891F O Ring and then thread the screwsThe Raypak 005891F O ring is a critical sealing component specifically engineered for Raytherm pool heater models P 2100 through P 4001. Designed for high performance sealing within the header manifold and unitherm governor assemblies, this genuine Raypak replacement part ensures a pressure tight connection that prevents bypass leaks and maintains thermal efficiency. Constructed from high durometer material capable of withstanding industrial