Domestic Hot Water Recirculation Part 1: What’s The Point?

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What could have led ASHRAE, and subsequently building codes all over the U.S., to require domestic hot water recirculation systems in non-residential buildings? This relatively bold stance on water conservation is quite simply a reaction to profound water shortages throughout the U.S. – shortages that will only get worse as the population continues to increase.
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How to Avoid Legionella Outbreaks in Domestic Hot Water Systems

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Domestic hot-water systems are frequently implicated as the source of legionellosis (Legionnaires’ disease) outbreaks. Very small quantities of Legionella, the bacteria that causes the disease, is commonly found in the ground, in water, and even in tap water. Legionella is not likely to become a health risk unless it begins to multiply and colonize. If not properly designed or maintained, a domestic hot water system (as well as other open water systems) can facilitate such growth....
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What is Legionella and Why Should You Care?

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Legionella. It is a potentially fatal bacterium that for the most part has managed to fly under the radar of the general public since it was first determined as the cause of Legionnaires’ disease in the 1970s. Despite the fact that there are well-known techniques to prevent the growth of the causative bacteria, legionellosis (commonly known as Legionnaires’ disease) has taken the lives of well over 100,000 people in the U.S. alone. Furthermore, reported cases of the bacteria has risen 217 percent in just the last decade, according to the Centers for Disease Control and Prevention.
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Designing Commercial Sewage Lift Stations Part 7: Elevator Pits

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By Chris Edmondson

Sump pumps aren’t just for plumbing applications.  Did you know that most elevator pits also require sump pumps?  ASME 17.1 – 2007 states that any elevator that is provided with Firefighters’ Emergency Operation

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No More Constant Speed Pressure Boosting Under ASHRAE 90.1 - 2010

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By Mark Bingham

“Constant speed pressure boosters are DEAD and GONE TO HEAVEN!”

That was the prevailing message recently from Chris Edmondson, CEO of JMP, as he briefed the folks here at about the upcoming mandatory changes under SECTION 10.4 of the new ASHRAE 90.1 – 2010.

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