Boiler Water Quality

Course Overview

Hydronic system performance is highly dependent on the quality of the system fill water, both from an efficiency and longevity standpoint. You may have heard about VDI 2035 as a standard when it comes to water quality. In this course we will examine VDI 2035 and the quality standard it sets for hydronic water. In most applications, municipal or well water on site is used to fill the hydronic system. Domestic water may be suitable to consume but due to pH, hardness or other compounds dissolved in the water, the water may have adverse effects on the system. We will look at how these compounds enter the water and the potential problems that dissolved compounds present to the system. Additionally, we will look at the various methods of removing these compounds either in the fill process or through chemical addition. Finally, the various common additives for hydronic systems will be presented.