April 03, 2023 When does solar thermal make the most sense? (with Bob Rohr) What drives the adoption of solar hot water systems? Are there specific factors that signal th... Read more
September 17, 2015 How do I install a thermowell in your ThermoCon tanks? All of Caleffi's storage tanks have multiple ports. Installing a temperature sensor t... 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
February 19, 2015 About my expansion tank... We get questions regarding locating and orientation of expansion tanks. Can I mount the tank on its ... Read more
October 23, 2014 Tech Tip: iSolar Controls The intent of Ask Caleffi, was to make it as easy as possible for installers and contractors to unde... Read more
October 02, 2014 Tech Tip: ThermoCon™ Tank Fittings Caleffi thermal storage tanks play an important role in hydronic and renewable energy heating and co... Read more
August 28, 2014 Tech Tip: Stranded Wires Stranded wires can be an obstacle and a hazard on the job site when making connections to small term... Read more
August 13, 2014 How do I commission and configure my iSolar™ controller? One of the more frequent calls that we receive here in Milwaukee is customers asking for assistance ... Read more
July 29, 2014 Control pump speed with 120 VAC? Here’s a good question: “Your iSolar™ controller literature says the relay outputs... Read more