An installer sets up a zoned distribution system. To keep it simple, he uses the same size piping for the headers and all the distribution circuits. The heat source is a low-mass copper tube boiler with high flow resistance.
Trends show the market for solar combisystems — systems that provide both domestic water and space heating — has potential to expand. An estimated 42,000 of these systems are installed in the United States, and the market is growing slowly.
An installer who is used to boiler replacements may view the mechanical room aspects of changing from a boiler to a geothermal heat pump the same as a boiler changeout; just swapping out one “box” for another. Unfortunately, this can lead to some significant operating problems.
The company has provided $15,000 to support 2014 student scholarships through the Plumbing-Heating-Cooling Contractors Educational Foundation and PHCC National Auxiliary.
North America’s top plumbing and pipe-fitting apprentices were put to the test during the 2014 United Association International Apprenticeship Competition, which was held late August in conjunction with the Instructor Training Program at Washtenaw Community College in Ann Arbor, Mich.
Due to the high price of fuel oil, a contractor is hired by a building owner to install a wood-gasification boiler to supplement the oil boiler. The building’s distribution system consists of a three-zoned air handler with hot water coils.
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