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Renewable resources

Blog post categories list
Blog post categories list
Idronics Hydronic Principles Ask Caleffi Podcast Mixing Valves Air Separation Dirt Separation Domestic Hot Water Systems Water Quality Zone Valves and Radiator Valves Balancing Valves Renewable resources Coffee with Caleffi Q&A Zone Relay Controls Manifolds and Mixing Stations Hydraulic Separation Pressure Reducing Valves Filling and Backflow Prevention Certifications Engineering Tools and Documentation Heat Meters BIM Mixing Valves, Thermostatic
When does solar thermal make the most sense? (with Bob Rohr)
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...
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How do I install a thermowell in your ThermoCon tanks?
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...
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Is there a difference between a buffer tank and a storage tank?
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...
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How do I change the thermostat in a boiler protection valve?
August 05, 2015

How do I change the thermostat in a boiler protection valve?

Designed to protect non-condensing boilers from flue gas condensation, when installed prop...
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Can I dilute glycol to less than 25% concentration?
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...
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Do I need a double-wall heat exchanger for solar domestic hot water applications?
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. ...
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Does steam-back damage glycol?
July 07, 2015

Does steam-back damage glycol?

A small amount of boiling (in a solar collector that is stagnating) won’t immediatel...
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Expansion Tanks
February 19, 2015

About my expansion tank...

We get questions regarding locating and orientation of expansion tanks. Can I mount the tank on its ...
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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...
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October 02, 2014

Tech Tip: ThermoCon™ Tank Fittings

Caleffi thermal storage tanks play an important role in hydronic and renewable energy heating and co...
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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...
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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 ...
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