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DUNKIRK Helix VX Boiler

Updated: Aug 10, 2016

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Overview of the Helix VX

The Dunkirk Helix VX is a gas-fired, wall-hung modulating condensing boiler with an efficiency of 95% AFUE. The Helix VX is an Energy Star 2016 Most Efficient product and is available in five sizes. It has a 5:1 turn down ratio and features a self-cleaning, vertically mounted helical fin tube heat exchanger constructed of 316L/444 stainless steel. The unit offers a variety of venting options and is approved for PVC, CPVC and Polypropylene venting. A top gas pipe connection with built-in drip leg makes installation easier, and the unit's electrical wiring is easy access with a protective terminal strip. Other features include a control module with text display which manages up to 16 boilers, intermittent direct spark ignition, 30 PSI safety relief valve, boiler drain valve and condensate drain with built-in trap.

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Other Helix VX Reviews

Among the few online comments regarding the Helix VX is one on greenbuildingtalk.com from a professional who recommended that a homeowner looking for opinions on boilers for radiant heating look into the Helix VX.

Helix VX Warranty

Product registration is required within 60 days of installation for maximum warranty coverage. The warranty for the Dunkirk Helix VX boiler is comprised of the following:

  • 15-year heat exchanger warranty, pro-rated after the 10th year
  • 2-year parts and labor warranty

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