ensuring seamless compatibility with factory gas lines

the heater should be energized during the compressor's "off" cycle to maintain oil temperature

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

Easy Installation: Standard configuration allows for rapid field replacement during emergency furnace repair calls

Raypak 005891F O Ring ensuring seamless compatibility with factoryThe 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