Buderus offers the G315 Series commercial cast iron hot water boilers.
The G315 Series commercial cast iron hot water boilers from Buderus feature a thermostream boiler design that eliminates thermal shock. Return water enters a central distribution pipe and is then injected into, mixed and preheated with supply water in the top header before entering the main heat exchanger. Different diameter ports in the distribution pipe ensure proportionate flow through each section for optimum heat transfer and reduced thermal stresses in the boiler.
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