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Pumping from an Atmospheric Tank: Pump and Tank Piping (Part 2)

Norm Hall December 19, 2022Pumps, NPSH, Selection and Specification, Monday Morning Minutes

What can be simpler than pumping water from an open or atmospheric tank into another tank or system? What seems simple to many opens a …

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TanksNorm HallBell and GossettpumpsPiping

Pumping from an Atmospheric Tank: Pump Selection and Installation (Part 1)

Norm Hall December 12, 2022Pumps, NPSH, Selection and Specification, Monday Morning Minutes

What can be simpler than pumping water from an open or atmospheric tank into another tank or system? What seems simple to many opens a …

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Bell and GossettNPSHpumpsvariable speedhydrovarNorm Hall

Heat Pump Water Heaters: Drive Down First Cost Using Hybrid Solutions (Part 11)

Norm Hall October 31, 2022Water Heaters, Plumbing System Design, Electric, Heat Pump Water Heaters, Heat Pump Water Heaters, Monday Morning Minutes

The owner of a local engineering firm recently said to me, “First cost and space are key discussion points in any building design.” First cost …

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Hydronicspumpshydronic systemshydronic systemWater Heaters
Lemonade Stand
Lemonade Stand

Heat Pump Water Heaters: How They Work (Part 2)

Norm Hall August 8, 2022Water Heaters, Plumbing System Design, Electric, Heat Pump Water Heaters, Heat Pump Water Heaters, Monday Morning Minutes

Heat pump water heaters have a place in the decarbonization efforts by building plumbing designers, contractors, and engineers. Heat pumps have been part of the …

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Norm HallpumpsHVAC Hydronic SystemHVAC SystemsWater Heaters
scientist vs engineer
scientist vs engineer

Circulator Pump Curves & Step Sized Selections. A Domestic Water Recirculation Example

Norm Hall May 9, 2022Monday Morning Minutes, Pumps, Speed

Circulator series pumps are those small inline pumps that have fixed impeller choices with no impeller trimming available. When these pumps have ECM technology, the …

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BoilersHydronicsNorm HallBell and Gossettpumps
how to place boiler image
how to place boiler image

Primary-Secondary or Primary-Variable Heating Systems: Which System to Choose?

Norm Hall May 2, 2022Boilers, Primary Secondary, Delta T, Monday Morning Minutes

Primary-Secondary vs. Primary-Variable hydronic boiler pumping systems each have advantages for the engineer to consider. Most people in the industry are in one camp or …

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BoilersNorm HallBell and Gossettflow ratepumpsprimary secondary prinicplesprimary variable flow systemDelta T
confused boiler problem
confused boiler problem

Primary Variable Heating Systems: Should I Pump Into the Boiler or Out of It?

Norm Hall April 11, 2022Boilers, Pumps, Monday Morning Minutes, Tanks, Hydronic Design, Primary Variable, Expansion and Compression Tanks, Expansion and Compression Tanks

We recently received several calls for our recommendation on whether to pump into the boiler or out of the boiler in a primary variable heating …

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pumpsvariable speedhydronic systemsBoilersHydronicsNorm HallBell and GossettExpansion Tanks

Minimum Flow in a Variable Speed Pump: A Great Example

Norm Hall March 14, 2022Pumps, Cooling Towers, Hydronic Design, Monday Morning Minutes

What is the minimum flow rate a variable speed pump can provide without damage to the pump? This is a question every engineer should ask …

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hydronic systemsHydronicsNorm HallCooling Towerspumps
Video - Danfoss VFD High Speed Setting
Video - Danfoss VFD High Speed Setting

How to Limit the Speed of the Pump using a Danfoss Variable Frequency Drive

Mike Belanger July 30, 2020Pumps, Variable Frequency Drives, Variable Speed, Speed, Service Tip of the Month

In this Service Tip of the Month, we demonstrate how to limit the speed of the pump using the Danfoss Variable Frequency Drive (VFD).

VFD Local Control PanelDanfoss Variable Frequency Drivepumpsvariable speed
Double Suction Pump Specification
Double Suction Pump Specification

Double Suction Pump Specification: Rotating Pump Elements

Norm Hall April 1, 2019Monday Morning Minutes, Pumps, Selection and Specification

We continue to examine the double suction pump specification for HVAC and hydronic systems. Your specification may have a paragraph or two about the shaft, …

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pumpsRotating Pump Elementsrotating pumpDouble Suction Pump Specification
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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
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    • Service and Maintenance
  • Education
    • Overview
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  • About RLD
    • Overview
    • Team Deppmann
    • R.L. Deppmann Locations
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    • Press and News