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Home » Topics » Plumbing & Mechanical Contractor » John Siegenthaler: Hydronics Workshop

John Siegenthaler: Hydronics Workshop
John Siegenthaler: Hydronics Workshop RSS Feed RSS

Siegenthaler PM

Check valves don't always work as intended

John Siegenthaler, P.E.
John Siegenthaler, P.E.
September 25, 2017

What is the purpose of a check valve?


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Siegenthaler PM

Practice good sensor-ship

Give your temperature controllers 20/20 vision.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
August 29, 2017

Every hydronic system has one or more controllers that measure and respond to temperature.


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Siegenthaler PM

Properly sizing and operating circulators

Reducing head loss reduces the kWh of electrical energy required to operate them.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
July 21, 2017

When designing hydronic circuits, most of us focus on what’s necessary for that circuit to absorb thermal energy at a heat source, carry it along like a conveyor belt and release that energy at one or more heat emitters.


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Siegenthaler PM

The disproportionate world of hydronics

John Siegenthaler, P.E.
John Siegenthaler, P.E.
June 16, 2017

The math associated with some of our assumptions can lead to incorrect conclusions.


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Siegenthaler PM

Continuous circulation in floor-heating circuits

John Siegenthaler, P.E.
John Siegenthaler, P.E.
May 19, 2017

Keep water moving to prevent frozen pipes and other issues.


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Siegenthaler PM

The finer points of applying a 2-pipe buffer tank

John Siegenthaler, P.E.
John Siegenthaler, P.E.
April 28, 2017

There are advantages to using this piping configuration in hydronic systems.


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Siegenthaler PM

How to properly size finned-tube baseboard heat emitters

Have a look at the rating tables for most finned-tube baseboard sold in North America and chances are you’ll see a footnote.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
March 29, 2017

Have a look at the rating tables for most finned-tube baseboard sold in North America and chances are you’ll see a footnote under the table that reads something like this: “Ratings are based on active fin length and include 15% heating effect factor.”


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Siegenthaler PM

Examining the effects of flow reversal in circulators

Unique design concepts sometimes require components to operate in non-standard conditions.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
February 17, 2017

There are hydronic design concepts in which flow must pass backward through a non-operating circulator, perhaps thousands of times over the life of the system.


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Siegenthaler PM

When is flow reversal practical?

Increasing heat output.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
January 18, 2017

Flow reversal is possible in a P/S system, but is it practical?


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Siegenthaler PM

When and how to use reverse return piping

In many hydronic systems, there’s a need to divide the overall system flow into equal streams that pass through several identical components.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
November 16, 2016

When — and when not — to use reverse return piping.


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  • CONTRACTORS
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    • BUSINESS MANAGEMENT
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    • TECHNOLOGY
    • WATER TREATMENT
    • PMC COLUMNS
      • Dave Yates: Contractor’s Corner
      • John Siegenthaler: Hydronics Workshop
      • Kenny Chapman: The Blue Collar Coach
      • Matt Michel: Service Plumbing Pros
      • Scott Secor: Heating Perceptions
  • ENGINEERS
    • CONTINUING EDUCATION
    • DECARBONIZATION | ELECTRIFICATION
    • FIRE PROTECTION
    • GEOTHERMAL | SOLAR THERMAL
    • PIPING | PLUMBING | PVF
    • PME COLUMNS
      • Christoph Lohr: Strategic Plumbing Insights
      • David Dexter: Plumbing Talking Points
      • James Dipping: Engineer Viewpoints
      • John Seigenthaler: Renewable Heating Design
      • Lowell Manalo: Plumbing Essentials
      • Misty Guard: Guard on Compliance
  • RADIANT & HYDRONICS
    • RADIANT COMFORT REPORT
    • THE GLITCH & THE FIX
  • INSIGHTS
    • CODES
    • GREEN PLUMBING & MECHANICAL
    • PROJECT PROFILES
    • COLUMNS
      • Codes Corner
      • Natalie Forster: Editorial Opinion
      • Guest Editorial
    • SPONSOR INSIGHTS
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  • RESOURCES
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    • PM BOOKSTORE
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  • EMAGAZINE
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    • ARCHIVE ISSUES
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    • ADVERTISE
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