Indirect Water Heater; Inlet/Outlet Connection 3/4 Inch Male Threaded x 3/4 Inch Male Threaded; Relief Valve Details 3/4 Inch T and P Valve Factory Installed; Tank Dimensions 22.25 Inch Diameter x 64 Inch Height; Tank Material 316L Stainless Steel; Tank Capacity 60 Gallon; Tank Warranty Lifetime; Boiler Supply/Return Connection 1 Inch Male Threaded x 1 Inch Male Threaded; Gross Boiler Output 156000 BTU/Hour; Coil Surface Area 12 Square Foot; Flow Rate 247 GPH; Insulation Details 2 Inch CFC Free Foam Insulation; Options Auxiliary Dip Tube; Inclusions/Features 1/4 Inch Turn Drain Valve, Rust Resistant Plastic Jacket; Application Commercial; Applicable Standard CSA, AHRI; Drain Connection Size 1/2 Inch Female Threaded