Phase III Model TR Indirect Fired Water Heaters, when coupled with any boiler, provide the most efficient systems available for volume water heater applications. Model TR water heaters can be easily manifolded to form modular systems suitable for any service hot water needs.
Phase III's advanced technological design features two concentric tanks. The inner tank- constructed of high quality, durable stainless steel - contains service hot water. The outer tank (steel) contains hot water from the boiler. Service water in the inner tank is heated by circulated hot water from the boiler in the outer tank. A steel jacket and polyurethane foam insulate the outer tank to provide maximum efficiency.