December 08, 2016 What is fall-off pressure for a pressure reducing valve? Fall-off pressure is the reduction of pressure at the outlet of a pressure reducing valve (PRV), whe... Read more
March 24, 2016 How many gallons of water can I demineralize with your HYDROFILL, before I need to replace the resin bags? It depends on the hardness of the site water. The Water Treatment Capacity table in the HYDROFILL&nb... Read more
March 23, 2016 How do I use your new HYDROFILL demineralizer to fill a glycol system? Unless you know the actual system volume, it would be tough to partially fill with demineralized wat... Read more
March 03, 2016 Can a Caleffi Z-one Relay control both domestic hot water heating and space heating using one boiler? Yes, the relay controls have the ability to prioritize DHW demand and they also have the ability to ... Read more
February 10, 2016 How do I design a hydronic system for different temperature emitters? The most basic, and typically the most economical, way to design a hydronic system for multiple temp... Read more
November 20, 2015 How is magnetite removed from a hydronic system? Magnetic dirt removal in hydronic heating and cooling systems is a hot topic these days. Check out t... Read more
November 12, 2015 What is a reset schedule for a heating system? With outdoor reset, the system does not run at one fixed water temperature. It is called outdoor res... Read more
November 05, 2015 What does magnetite in a hydronic system look like? Check out this amazing video showing how a Caleffi 5465 Series DIRTMAG is separating the magnetite o... Read more
August 12, 2015 Is there a difference between a buffer tank and a storage tank? Are they the same thing? What's different? Really a tank is a tank. Anytime we use a tank for... Read more
July 23, 2015 Can I dilute glycol to less than 25% concentration? Over-dilution of formulated glycol heat transfer fluid (HTF) causes corrosion problems. The reason f... Read more
July 07, 2015 Do I need a double-wall heat exchanger for solar domestic hot water applications? That is a really good question! It really varies from state to state, even from city to city. ... Read more
July 07, 2015 Does steam-back damage glycol? A small amount of boiling (in a solar collector that is stagnating) won’t immediatel... Read more