Most HVAC systems have pipes, pumps, fittings, valves and other components made of many different materials. There are many ways for dirt, scale and other debris to be present in the heat transfer fluid (HTF). Our staff has seen new buildings with significant debris in newly-installed HTF; for example, the steel pipe used in the construction is often stored outdoors and subject to an environment of dirt, and welding slag as the system is constructed. Neglected systems may show scale, chunks of iron oxide and other suspended substances.
Clearing a system of physical contamination is a fairly simple process: G2 can install a bag filter housing with isolation valves in the mechanical room, close to the circulation pumps. We have several different filter pore sizes, and generally start with a coarse filter to pick up the largest contaminants first. By examining the debris and testing the HTF for inhibitors, we can assist you in improving the condition of the HTF in your system. This process may take as long as several weeks. The side-stream flow is low enough as to not degrade the heat transfer efficiency of your system while it is temporarily in place.