The Cemline SEH Instantaneous Water Heater fits the bill!! This package comes factory assembled & wired with a touch screen interface, steam or HW control valve, ASME Code Construction, 316 Stainless Steel tank, and all the necessary trim for a complete system. The largest SEH has capacity to heat 212 GPM from 40F to 120F with 15 psi steam. Cemline also has a great on-line selection tool. Be sure to check out the Cemline SEH and their other heating products at
www.cemline.com.