Navien NPN-160ENG, 7.6 GPM Non-Condensing Tankless Water Heater, Outdoor Only

Features:

• Non-condensing
• 0.81 Efficiency rating
• NaviTech stainless steel heat exchanger and burner
• Compatible with 3/5″ Category III Concentric vent up to 43 ft
• For residential and commercial applications
• Natural gas ready (can be field converted with optional Conversion Kit)
• Built-in control panel
• 7.6 GPM at 35F
• Max. 160,000 BTUh
• Outdoor wall-hung only
• Ultra Low NOx emissions (20ppm)
• Cascading capable for up to 2 units