Specifications include, but are not limited to: Remove and dispose of the existing heat exchangers, storage tank and associated hot water delivery equipment. Remove softener and replace with Marlo MRG-450-3 triple progressive softener system, pipe, electrical and associated equipment. Temporary service of hot water supply will be required as hot water delivery down time shall not be allowed. Demolish existing steam lines, condensate, pumps, traps, valves, manifold and piping and replace with new as shown on P1 thru P11 on the drawings. Install 3 new Basco 2-pass u-tube heat exchangers or engineer approved equivalent and 1000 gallon low pressure, ASME, hot (minimum 190 degree F or above rated) water storage tank.