28 May '16, 2pm

Memorial Day deals look enticing, Using a Tankless Water Heater for Space Heat

Memorial Day deals look enticing, Using a Tankless Water Heater for Space Heat

At the 2011 experts’ meeting that Michael Chandler and I attended, Armin Rudd said, “Beginning in the mid-1990s, we began using water heaters for space heating. We had failed check valves in Taco pumps. We had scale. You get thermosyphon flow that gets past the check valve. On some systems, we got hot water flow to the coil during cooling. You get hot water heating systems and cooling systems fighting each other. To cut that short, most of those builders went to a different system because of the problems. Then we started using tankless water heaters. In 2006, decided to take another look at this. We had the low flow problem. The units wouldn’t turn on unless you had .6 gpm Gallons per minute. Measure of liquid (usually water) flow. . Then we had the frequent on/off flow problem — a lot of that. You end up with slugs of hot and cold water in the system. Since 2006, manufact...

Full article: http://www.greenbuildingadvisor.com/articles/dept/musings...

Tweets

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