At the recent ASPE Convention and Expo, I visited friends at the Leonard booth. I was invited to see their new electronic thermostatic mixing valves. Simply stated, it was cool. The adjustment of the hot water temperature setting was quick and easy on the basic model. The other models can connect to the building management system, or even your cell phone.
One of the best things about hydronic heating systems is that it’s easy to integrate some method of domestic water heating. This combination has been used for decades in systems where a boiler was the sole heat source. It’s also possible when a heat pump serves as the heat source.
In last month’s column, I presented a “template” for a system that provides space heating, cooling and domestic water heating using a cold climate air-to-water heat pump as the primary heat source, and the sole source of chilled water for cooling.