There are two basic reasons for you to control a hydronic system; to improve comfort and minimise energy costs.
The kind of control that is right for you depends on a number of factors like;
· Comfort requirements
· Energy use requirements
· Controllability of the hydronic system
· Cost of control equipment
· Cost of installation and commissioning
With so many variables, this is often far from an easy choice. There are several theoretical formulas to calculate the “Control difficulty” but the parameters in the formulas are quite difficult to establish. That is why we have developed a chart that sets out a basic rule of thumb;
Choose on/off control, where the control accuracy demands are not prohibitive, and the terminal unit in question is rather slow in response.
Choose modulating control, where Hydronic control accuracy demands are tough and harder to control.
Why balance small terminal units?What control?Circuit characteristicTA SolutionsWhich solution to use?Proven control