Navien Premium Tankless

1/2 in gas pipe capable up to 24 in
Field convertible gas system
Ultra condensing efficiency
Dual stainless steel heat exchangers
Low NOx emissions (20 ppm)
Schedule 40, 2 in venting up to 75 ft
Cascading capable
EZNav multi-line control panel
Built-in hot button control panel
Common vent up to twelve units