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Blog: Hydronic Principles

What kind of water do you put into your hydronic system?

April 11, 2022

Mark Olson, Caleffi North America GM, joins Greg and Dan during this episode of the Ask Caleffi podcast.  They discuss problems that can result from poor water quality within a hydronic system that can rob its equipment of life and reduce energy efficiency.  Our podcast gurus discuss prevention methods to help you on your next service call or new...

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Last modified: 
April 11, 2022
Ask Caleffi PodcastHydronic PrinciplesMagnetic SeparationWater Quality

Debris Lurking in Your Hydronic System

July 16, 2021

Got 5? Minutes that is! Then you've landed in the right place on our Ask Caleffi Blog. In this episode of the 5 Things You Need to Know - a mini training series featuring Cody Mack, our training and education manager - symptoms, problems and SOLUTIONS regarding debris in your hydronic system are discussed. ...

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Last modified: 
August 26, 2021
5 Things You Need To KnowAir and Dirt SeparationHydronic PrinciplesMagnetic Separation

"The path of least resistance." Do I really need a balancing valve?

June 29, 2021

Understanding the concepts of balancing a multi-circuit hydronic or domestic hot water system is less complicated when you understand how different balancing valves work and where to apply them.  Listen in as Greg and Dan help make your balancing job easier!...

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Last modified: 
June 29, 2021
Ask Caleffi PodcastBalancing ValvesDomestic Hot Water SystemsHydronic Principles

Are corrosion and noise signs of air in a hydronic system?

April 13, 2021

Episode 3 picks up where Episode 2 left off (an interesting discussion pertaining to air vents).   There is more to know about air in a hydronic system than what meets the eye.  Are...

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Last modified: 
June 24, 2021
Air and Dirt SeparationAir VentsAsk Caleffi PodcastHydronic Principles

How Water Behaves in Hydronic Systems

April 10, 2017

by Mark Olson, CEO of Caleffi North America, Inc.      as featured in HPAC Magazine      February 2017  Two common problems resulting from poor water quality are excessive corrosion and limescale accumulation. In Part I (...

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Last modified: 
April 28, 2021
Hydronic PrinciplesMagnetic SeparationArticlesWater Quality

How do I know when a y-strainer needs to be cleaned out?

July 22, 2016

A Y-strainer is an in-line filter for hydronic systems. As the strainer starts trapping dirt, resistance to flow (pressure drop) will increase. Measuring the pressure drop across the strainer while the system pumps are running, will indicate how plugged the strainer is. The Caleffi...

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Last modified: 
July 22, 2016
Air and Dirt SeparationHydronic PrinciplesWater Quality

Can I mount an air vent on top of your dirt separators?

May 24, 2016

Yes, you can. Air bubbles that make their way into the upper part of a dirt separator housing will be automatically removed if an air vent is installed. Our brass dirt separators, such as the 5462 Series DIRTCAL and...

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Last modified: 
May 24, 2016
Air and Dirt SeparationAir VentsHydronic Principles

What is the bottom connection on the 551 Series DISCAL?

December 03, 2015

It is common practice to connect a boiler trim kit, or just an expansion tank, to the bottom of a Caleffi 551 Series DISCAL air separator. The 551 has a 1/2" NPT female thread on the bottom and can be ordered with, or without, a "service check valve...

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Last modified: 
December 03, 2015
Air and Dirt SeparationHydronic Principles
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