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All centrifugal pumps in HVAC applications should be equipped with a shut-off valve, check valve, and a balance valve. Or, as an alternative, you can choose a valve that….
Read MoreDesigning, installing and balancing hydronic system became infinitely easier with the introduction of a handy little gadget called a pressure independent control valve or “PIC” valve. These valves, which first hit the market nearly two decades ago, have revolutionized hydronic balancing....
Read MoreThroughout 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.
Read MoreIf you’ve read Parts 1 thru 9 in this Hydronic Balancing Series then you should have a solid understanding of the fundamentals of balancing. If not – go back and review the previous blogs. You need these fundamentals to understand what we will discuss here in Part 10, which is...
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