Diversified Heat Transfer Inc. (DHT) introduced the STP Series fully packaged storage water heater. The water heater uses a compact double wall brazed plate heat exchanger that optimizes heat transfer by generating more efficient hot water replenishment of the storage tank. It is suited for a variety of new and retrofit water-to-water heating applications that require little to large storage volume capacities, such as apartment complexes, correctional facilities, hospital and other health care centers, hospitality settings, and colleges and universities.
The ASME-certified STP Series water heater is built with a heat exchanger made from 316L stainless steel plates that are AHRI 400 Rated. The units have a standard carbon steel tank with double glass lining, with a duplex stainless steel model also available.

DHT has developed the STP Series with a modular design that allows multiple simplex and duplex heat exchangers to be stacked for efficient built-in redundancy and extra capacity in a small footprint. Company officials said maintenance is also improved through the design, as it allows each heat exchanger to be isolated for cleaning and servicing to eliminate system downtime. 

Recovery rates of the STP Series range from 600 gph to 10,800 gph with 180°F boiler water for 100° temperature rise. Domestic storage temperature has a control range of 50°-180° using a VFD pump or 2- or 3-way control valve on the boiler water side. Standard tank sizes are from 175-500 gallons, with 750-1,000 gallon units available via special order.

-- Diversified Heat Transfer Inc.