Dunkirk is one of the most established names in hydronic heating. Their reputation has been built over the years by ingenious design and perpetual innovation. The Excelsior EXB is a highly efficient oil-fired boiler produced by Dunkirk. It excels in new construction or as a replacement boiler. This is due in large part to the EXB's fantastic versatility and longevity. Excelsior EXB boilers are designed with ease of installation and ease of use in mind. The boiler's compact design makes it easy to fit into your home's system and a reversible burner door provides even more flexibility. The EXB features straightforward dial-based controls with a clear LED screen. Setting your boiler for comfortable, efficient operation is rarely easier than it is with an EXB. Dunkirk selected cast-iron for the Excelsior EXB's heat exchanger because of the material's reliability and durability. When it comes to oil-fired hydronic heating, the Excelsior EXB is one the best options available.
Three Pass Heat Exchanger
For the EXB's cast-iron heat exchanger Dunkirk employed a three-pass design. This design maximizes heat transfer by routing the boiler water through the heat exchanger three times. Superior heat transfer means less wasted energy and more efficient heat.
The control for Excelsior EXB boilers features an energy saving operating mode. Economy Mode is set through a dial on the control. When active, it automatically manages the temperature and circulation of your system to find the perfect balance of efficiency and comfort.
The reversible burner door of the Excelsior EXB provides quick access to the heat exchanger and oil line for inspection and service purposes. Extra wide flueways also streamline the maintenance process; they accumulate less dirt and are easier to clean.
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