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Slant/Fin has introduced the commercial line of the VGH Boiler. The next generation duo stainless steel water tube heat exchanger features larger water passages, increasing the heat output for its size. The lower pressure drop on the water side also contributes to the compact size, and the lower pressure on the flue gas side contributes to the longer approved vent lengths (up to 481 feet).
A stainless steel premix burner reduces excess air and provides efficient and reliable direct spark ignition. Integrated combustion analyzer test ports are standard on all models, and the vent connection is deigned to accept PVC, CPVC, Polypropylene and stainless steel. The small-footprint VGH-, 299, 399 and 500 are perfect for most commercial installations. The onboard control has four built in cascade program modes, allows for remote operation controlling the heating, DHW and boiler sequencing and has the ability to cascade up to 16 boilers. Residential and combi sizes are expected by the 2019 Heat Season.