Specifications include, but are not limited to: A. The heat exchanger skid shall be supplied with Simplex heat exchanger mounted on a single skid. Sizing as shown on schedules. Skid shall be provided with single entry points for liquid inlet, liquid outlet, steam inlet and condensate outlet. The skid shall be hydrostatically tested prior to shipping. B. The basis of operation shall be as follows. The hydronic water is heated in the u-tubes of a vertical heat exchanger designed to be flooded at approximately 15% at full load in order to have a condensate outlet temperature of 200oF or lower, eliminating energy losses due to flash steam. C. The steam will be supplied directly to the skid; no pressure reducing station or control valves are required. Condensate can be lifted at the outlet of the skid; no condensate pump required.