Bosch 1600H NG AquaStar 4.3 GPM Indoor Tankless Natural Gas Water Heater

Bosch, 1 Major Appliance Or Shower At A Time, Hydro Ignition, Natural Gas Tankless Water Heater, Hydro Ignition Means No Standing Pilot Or Electricity Needed, Water Flow Spins The Hyrdro Igniter Which Generates The Millivolts Needed To Ignite The Gas To The Burners, 117,000 BTU Input Delivers 3.3 Gallons Per Minute At A 55 Degree Fahrenheit Rise, Standing Pilot, 1/2 Gallon Flow To Activate Burners, Vertical Venting Only, Must Use 5" Double Wall B Vent Pipe, Modulating Gas Valve From 28,000 To 117,000 BTU's For Optimal Performance, 1/2" Male Nominal Pipe Thread Gas & Water Connections, Natural Gas Pressure, Minimum 7" Water Column To Maximum 14" Water Column, Water Pressure Minimum 18 PSI To Maximum 150 PSI, 69% Energy Factor, 80% Thermal Efficiency, T & P Valve Included, Warranty 12 Years On Heat Exchanger & 2 Years On Parts, Qualifies For The Energy Policy Act Credit, CSA Certified.