Buderus SSB255 206,000 BTU Gas-Fired Floor Standing Condensing Boiler

Note: Product Title reflects this boiler's IBR Net Output Rating Specifications: Max Input Rate (BTU/hr): 255,000 Min Input Rate (BTU/hr): 51,180 Turndown Rate (%): 5:1 (20%) Gas Connections: 1" Max/Min NG Pressure (Inch W.C.): 10.5 / 3.5 Max/Min LPG Pressure (Inch W.C.): 13 / 8 Water Connections: 1½" Water Volume (Gallons): 4.0 Vent/Air Intake Connections: 3" Max Operating Temp (°F): 194 Surface Heat Exchanger (SqFt): 22.0 Min. Clearance to Combustibles: 2"