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. A single coil Dunkirk H2O indirect fired water heater is a great addition to any hydronic heating system. Fast, efficient domestic hot water production is as simple as connecting an H2O to your boiler. With centralized connections on the top of the unit, setup is quick and easy. The H2OI115CDK has a 115 gallon storage capacity and an impressive recovery time to make sure that you'll always have hot water when you need it. With an indirect-fired water heater, you can use your boiler's efficiency and power for domestic hot water in addition to space heating. When it comes to reliable, efficient water heating in a durable package, the H2O is a fantastic choice.
The H2OI115CDK is built to last. H2O water heaters are wrapped in a thermoplastic jacket to prevent damage while stainless steel construction of the DHW tank prevents damaging corrosion and keeps your water supply clean.
Standby heat loss is one of the quickest ways to negate the energy savings of an indirect-fired water heater. Two and a quarter inches of expanded polystyrene insulation bring the H2O's standby loss under a half degree Fahrenheit per hour.
Advanced Heat Exchanger Design
Dunkirk uses a smooth heat exchanger coil with a large diameter for the H2O line. These design elements prevent buildup that inhibits heat transfer. Stainless steel was selected as the material for its corrosion resistance. The result is an efficient, low-maintenance heat exchanger.
Commercial Connection Sizes
The cold water inlet of the H2OI115CDK is moved to the left side of the unit. This allows Dunkirk to increase the connection sizes to support higher flow rates.