Navien Tankless Water Heater Parts Diagram: Repair 2026
A tankless water heater parts diagram maps key internal components including primary and secondary heat exchangers, water flow sensors, gas valve assemblies, ignition electrodes, and PCB controllers. It details cold inlet routing, hot outlet plumbing, condensate drain assembly lines connected to a protective P-trap, and Category IV polypropylene vent pipe terminations. 📌 Key Takeaways Primary…
