Check out this amazing video showing how a Caleffi 5465 Series DIRTMAG is separating the magnetite out of a commercial hydronic system! This 12 year-old system recently had the old cast iron boiler replaced with new high-...
An automatic air vent can be affected by water quality issues, such as excessive debris and particulates from corrosion, hard water scale or just plain dirt. The result can be poor air release or water dripping out of the vent cap and onto the floor. Most of the time, all that is needed is a good cleaning. If that doesn't do it,...
Over-dilution of formulated glycol heat transfer fluid (HTF) causes corrosion problems. The reason for this is insufficient concentration of corrosion inhibitors and insufficient pH buffering capacity will form acidic compounds when they oxidize which causes thermal degradation. Over-dilution also causes bio-degradation as discussed during the...
The best place to locate an air separator in a hydronic system is where the water temperature is high and the pressure is low. The solubility of the dissolved gases in the water is lowest at these conditions. For a heating system, the ideal location is at the outlet of the heat source. For chilled water systems, locate the separator in the return...
The short answer is – yes!
Almost all hydronic systems have at least one wetted component made of cast iron or steel (pump volutes, expansion tanks, etc.). All hydronic fluids also contain some amount of air and we know when oxygen, water and iron (or steel) come together the result is corrosion (iron oxides), some of which is ...
