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Home » Topics » Hydronic Technology

Hydronic Technology
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Ray Wohlfarth

Are boilers dangerous?

Take precautions when repairing or maintaining commercial boilers.
ray wohlfarth
Ray Wohlfarth
September 20, 2013

John was a custodian for a local school district. We used to call him “20 Questions” because he would constantly ply us with questions about the boilers when we would perform the annual service. He would jokingly ask how many of the 20 questions he would have left.


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John Siegenthaler Hydrolics Workshop

Parsing a number

Differences exist between rules of thumb and precise calculations.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
September 20, 2013

 

Differences exist between rules of thumb and precise calculations.


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My day as a potted plant

A tale of corporate misunderstandings and embarrassing new suits.
Dan Holohan
Dan Holohan
September 20, 2013

 Our daughter, Colleen, born and raised on Long Island, now lives in a suburb of Boston with her husband, Adam. The town they live in is called Medford.  


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Spirax Sarco-logo-422px

Lorraine Wiseman named president and GM of Spirax Sarco

September 13, 2013

She assumed her role on August 8, 2013, and is responsible for the USA business. 


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Ferguson-Byron-422px

Ferguson welcomes Byron Woodard as new CMO

September 11, 2013

Woodard comes to Ferguson from McGraw Hill Financial - Platts, where he was the vice president of global marketing.


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Bradford White-logo-422px

Bradford White donates to 2013 PHCC student scholarship fund

September 10, 2013

This year the PHCC Education Foundation and the PHCC National Auxiliary each received $7,500. 


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legend feat

Temperature gauge

Legend continues to expand its existing offering of gauges with its new temperature gauge with thermowell.
August 22, 2013

Legend continues to expand its existing offering of gauges with its new temperature gauge with thermowell.


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bosch feat

Tankless water heaters

Bosch’s Greentherm C 1050 ES and C 950 ES condensing gas-fired tankless water heaters are both Energy Star-rated models
August 22, 2013

Bosch’s Greentherm C 1050 ES and C 950 ES condensing gas-fired tankless water heaters are both Energy Star-rated models


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Ray Wohlfarth

Are modulating burners worthwhile?

Consider low-high-low burners on your next replacement.
ray wohlfarth
Ray Wohlfarth
August 22, 2013

For years we have designed boiler rooms consisting of two oversized boilers with fully modulating burners. 


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John Siegenthaler Hydrolics Workshop

Nature vs. math

Formulas and assumptions don’t always predict what happens.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
August 22, 2013

 The following formula has been around the North American hydronics industry for a long time:  


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    • BATH & KITCHEN PRO
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    • 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
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