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What is Control Head in Hydronic Variable Speed Pumping?

RL Deppmann February 19, 2024Monday Morning Minutes, Pumps, Hydronic Design, Selection and Specification, Curves, Affinity Laws

Control head is a term used in many different industries. What is the control head in our world of variable speed pumping hydronic and plumbing …

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hydronic variable pumpingvariable pumpingcontrol head

Variable Speed Pump Motors and Drives

RL Deppmann February 12, 2024Affinity Laws, Monday Morning Minutes, Pumps, Hydronic System Design, Selection and Specification, Curves, Efficiency, Speed, Affinity Laws

  Danfoss VFD Motor Efficiency Terms Bell & Gossett ECM Pump   Variable speed centrifugal pumps in building heating, cooling, and plumbing systems use a …

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affinity lawsvariable speed pump motorsVariable Speed Drivehydronic system design
heat or cool variable flow system chart
heat or cool variable flow system chart

Developing Variable Speed Pump Curves

RL Deppmann February 5, 2024Pumps, Hydronic System Design, Selection and Specification, Curves, Efficiency, Speed, Affinity Laws, Monday Morning Minutes, Affinity Laws

Most heating and cooling pumps in commercial buildings operate in a variable speed mode. Today, we take your Monday Morning Minutes to explore the variable …

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selection and specificationhydronic system designpumpspump curvesvariable speedaffinity laws
closed system diagram
closed system diagram

Closed System Curves in HVAC Hydronic Systems

RL Deppmann January 22, 2024Selection and Specification, Curves, Affinity Laws, Affinity Laws, Monday Morning Minutes, Pumps, Hydronic System Design

  A system curve is a graphical representation of how a heating or cooling system flow rate and system head might change as the load …

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affinity lawsclosed systemsclosed system curveshydronic system design

The Bell and Gossett System Syzer and Pump Affinity Laws – to resolve a field problem (Part 2)

Norm Hall February 22, 2010Monday Morning Minutes, Pumps, Hydronic System Design, Affinity Laws, Affinity Laws, Troubleshooting

Printer Friendly (PDF) Last week we used the Pump Affinity Laws to determine what size the impeller would be trimmed to in an oversized pump. …

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The Bell and Gossett System Syzer and Pump Affinity Laws – to resolve a field problem

Norm Hall February 15, 2010Troubleshooting, Monday Morning Minutes, Pumps, Hydronic System Design, Affinity Laws, Affinity Laws

Printer Friendly (PDF) The Pump Affinity Laws are used to determine the system curve. If we know the point of operation on a pump curve, …

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The Bell and Gossett System Syzer and Pump Affinity Laws

Norm Hall February 8, 2010Monday Morning Minutes, Pumps, Hydronic System Design, Affinity Laws, Affinity Laws

Hydronic heating system flow rates and pressure drops are related through a series of AFFINITY LAWS. Let’s examine the laws and how to use them …

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  • Products
    • Overview
    • Pumps and Accessories
    • Boilers and Water Heaters
      • Water Heater Stock
      • Boiler Stock
    • Hydronic Systems
    • Plumbing Systems
    • Steam and Condensate
    • Variable Frequency Drives (VFDs)
    • Glycol Solutions
    • Snowmelt Designs
  • System Design
    • Overview
    • Project Gallery
    • Selection and Design Tools
  • Water Solutions
  • Contractors
  • Service & Parts
    • Overview
    • Startup and Warranty
    • Parts
    • Service and Maintenance
  • Education
    • Overview
    • Basic Hydronic Blog Articles
    • Training Opportunities
    • Factory Classes
  • About RLD
    • Overview
    • Team Deppmann
    • R.L. Deppmann Locations
    • Careers
    • Community Engagement
    • Press and News