Lochinvar® Double Wall Indirect Water Heater, Model: SIT, 113 gal Capacity, 120000 Btu/hr, 14 gpm Flow Rate, 280 gal First Hour Delivery, 0.5 deg F/hr Standby Loss, NPT Connection, 150 psig, 15.03 sq-ft Coil Heating Surface, 174 gph Continuous Draw, Aquastat Control, 106 gal First Draw, 5.7 ft Heat Source Friction Loss, 2.5 gal Heating Water Capacity, 316L Stainless Steel, 194 deg F, 28 in Dia x 69 in H, Additional Information: 1-1/2 in Domestic Water Connection, 1 in Coil Connection