2" venting up to 65'
3” up to 150’ (including schedule 40 PVC)
Vent Installation Detector (VID) for added safety
Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions
Patented stainless steel fire tube heat exchanger Navien’s innovative heat exchanger design is ASME‑Certified,“H” Stamped, and reduces high-stress point weld failures common on other combi-boilers
Low gas pressure operation Negative pressure regulating gas valve ensures maximum performance all the way down to 3.5" of water column on natural gas and 8" of water column on propane gas
Advanced user interface with Setup Wizard is made easy with backbit panel, click-wheel control and intuitive text
Built-in control for a boiler pump, 3 zone pumps or 3 zone valves
1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.