The Dunkirk Helix VLT is a wall-hung modulating condensing gas boiler with an efficiency of 95% AFUE. The Helix VLT is an Energy Star Most Efficient 2016 product and is available in six models with capacities ranging from 50,000 to 299,0000 BTU/hr. The unit’s heat exchanger is constructed of 316L/444 stainless steel and has a vertically mounted helical fin tube design which helps remove water deposits and prevents scaling. The unit features built-in primary and secondary pipe, and a boiler control module which can stage fire up to 16 boilers. It has a factory-installed low water cut off with test feature and a user display interface with text display which allows easy programming.
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