In our last blog, we cautioned against using pressure independent control (PIC) valves when attempting to apply area control with reset. But why is that a problem? Aren’t PIC valves the greatest thing since microwave ovens?...Read More
We’ve talked about manual versus automatic balancing methods and we’ve talked about curve control versus area control. Now it’s time to consider the balance valve type impact on the pump control area. Let’s start this conversation with a question...Read More
Last week we learned that ASHRAE defines a balanced system as one that delivers a flow sufficient to achieve a 97% heat transfer at each coil. This week will look at why we balance and outline the strategies that are ...Read More
What are your options when unbalanced circuits in an existing hydronic system are creating comfort issues due to underflow or overflow through coils? We just spent the last twelve blogs describing the various methods for balancing a start-up system but do those same methods apply to existing systems and retrofits?
The short answer is....Read More