Thermogenics Hg 500B Nax Steam Boiler, 500BHP, 250PSIG, 575V, 858SQFT, 20.9MMBTU/Hr

The Thermogenics HG 500B NAX is a high-performance packaged coil tube steam boiler designed for industrial and commercial applications. This unit delivers a rated thermal output of 500 BHP (4,905 kW) with a maximum working pressure of 250 PSIG. It features a heating surface of 858 square feet (79.7 square meters) and utilizes a forced circulation, multi-coiled tube design that allows for full steam output from a cold start in approximately five minutes. The boiler is equipped with a fully modulating burner system offering up to a 10:1 turndown ratio on natural gas, with a maximum burner input of 20,900,000 BTU/hr and a minimum of 2,090,000 BTU/hr. Electrical requirements for the main power supply are 575 volts, 60 Hz, 3-phase, while the control system operates on 120 volts, 60 Hz, single-phase power. Construction complies with ASME BPVC Section I and CSA B51 standards, featuring a double-walled boiler shell that preheats combustion air to minimize radiation losses. Standard equipment includes a PLC-based flame safeguard system, automatic bottom and surface blowdown controls, and a steam separation drum that ensures 99% plus dry saturated steam. The compact footprint and low water content design enhance operational safety by eliminating the potential for catastrophic steam-side failure. Typical dimensions for this 500 BHP model are approximately 168 inches in length, 98 inches in width, and 107 inches in height, with a shipping weight of roughly 21,000 lbs.