NYC Adopts ASHRAE Legionella Standards

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NYC Adopts ASHRAE Legionella Standards

New York City wasted no time adopting portions of the recently published Standard 188-2015, Legionellosis: Risk Management for Building Water Systems.  This is following the recent outbreak of... 

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ASHRAE Passes Standard 188-2015, Legionellosis: Risk Management for Building Water Systems

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Why has ASHRAE decided to address balancing in a standard that is written for the purpose of Legionella prevention? The reason has to do with domestic hot water recirculation systems – particularly large systems with multiple returns coming back to the boiler. If these return lines are not balanced it is possible that...  

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Hydronic Balancing Part 1: The Standards and Driving Force Behind the New Requirements

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Balancing plays a critical roll in the performance of any hydronic heating and cooling system. For that reason alone, ASHRAE has made hydronic balancing a non-negotiable stop on the road to compliance with ASHRAE 90.1-2010 (or 2013), starting with this requirement....
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Heads up on ASHRAE 90.1 - 2013 and Its Impact on Commercial HVAC Design!

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The Department of Energy (DOE) released a statement last month saying that ANSI/ASHRAE/IES Standard 90.1 - 2010 Energy Standard for Buildings Except Low-Rise Residential Buildings offers 8.5% source energy savings and 7.6% site energy savings over the 2010 version. That’s enough to warrant another round of changes to commercial building codes. State governments now officially have until September 26, 2016....
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Domestic Hot Water Recirculation Part 2: Where ASHRAE 90.1 Conflicts with OSHA

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When it comes to domestic hot water recirculation design, OSHA safety provisions and ASHRAE 90.1 energy efficiency requirements have put plumbing engineers between the proverbial rock and hard place. In an effort to minimize the energy penalty associated with mandatory domestic hot water recirculation, ASHRAE 90.1 has created operational parameters for these systems. The problem is that these parameters are in direct conflict with OSHA’s requirements for Legionella prevention.
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