Hydronic Balancing Part 12: Pressure Independent Control Valves

Hydronic Balancing Part 12:  Pressure Independent Control Valves

Designing, 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....

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Hydronic Balancing Part 11: Variable Flow Pumping

Hydronic Balancing Part 11: Variable Flow Pumping

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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Hydronic Balancing Part 8: Read & Set Proportional Balance Method

Hydronic Balancing Part 8:  Read & Set Proportional Balance Method

The 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... 

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Energy Efficient Hot Water Boiler Plant Design Part 5: Fan Coils, Pumps & Flow Control

So you’ve decided to use condensing boilers on your next project – GREAT! Just remember that this decision will impact other aspects of your mechanical design. Condensing boilers DO NOT operate properly in systems that are designed around traditional non-condensing technology.
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