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Throughout our Hydronic Balancing Series, we’ve been slowly and meticulously making our way to the more complex control systems that we see today. We walked you through the steps of proportionate balancing a simple 3-zone system and taught you how to trim an impeller in accordance with ASHRAE 90.1. Today, we’re going to see what happens when we add variable speed drives to the system.
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Happy New Year and welcome to the newly launched JMP Study Hall!
In the spirit of the New Year, we are excited to unveil the brand new look--and name--of our blog. We hope that you’ll find this new design much easier to navigate and will appreciate the direct access it gives to all our channels for HVAC education.
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Balancing 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...
Read MoreBalancing contractors and facility operators would have a much easier time balancing a hydronic system if they were present during the system design process. Unfortunately that is rarely the case so there is usually a certain amount of detective work that comes with balancing. The biggest part of that is getting a handle on the overall pumping system. You can’t effectively balance a system without understanding...
Read MoreThere are multiple choices for creating a balanced hydronic system. Here is a list of the most commonly used devices.
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