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In our last blog we covered (in detail!) the step-by-step process of proportionately balancing a hydronic system. But many of you may be wondering if all that legwork is truly necessary when theoretically....
Read MoreThe task of proportional balancing is the first step to achieving an energy efficient pumping system. It involves adjusting the system balancing valves to make certain that all zones get proportionate flow under design conditions. Once this task is complete, it gives us the opportunity to trim the fat out of the system for greater efficiency...
Read MoreNew 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...
Read MoreWhy 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...
Read MoreBalancing isn’t just about adjusting valves. Sometimes (very often in fact) it is about evaluating the performance of the pump(s) under real world operating conditions. Remember what ASHRAE 90.1 has to say about Hydronic System Balancing: “Hydronic systems shall be proportionately balanced in a manner to first minimizethrottling losses; then the pump impeller shall be trimmed or pump speed shall be adjusted to meet...
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