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sun rise

HVAC Variable Speed Pump Control System Diversity: Part 1

Norm Hall July 9, 2018 Control, Monday Morning Minutes, Operation, Pumps, Selection and Specification, Variable Speed

HVAC variable speed pump control does not have to be complicated. Often times a simple differential pressure sensor (DP) at the farthest point from the …

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pump selection
pump selection

Bell & Gossett Brings Independence to Pump Selection with ESP-Systemwize

Norm Hall July 2, 2018 Monday Morning Minutes, Operation, Pumps, Selection and Specification, Variable Speed

Photo by Radiant Shutters on Flickr On July 2, 1776, General Howe landed his fleet in New York and unloaded the first wave of 19,000 …

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Modified Hydronic System Representation
Modified Hydronic System Representation

HVAC Variable Speed Pump Control Head: Part 2

Norm Hall June 25, 2018 Monday Morning Minutes, Operation, Pumps, Selection and Specification, Variable Speed

In the last R. L. Deppmann Monday Morning Minutes (MMM), we introduced the basic concept of an HVAC variable speed pump control head, modeling a …

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hvacpumpsvariable speedVariable Speed Pump Control Head

HVAC Variable Speed Pump Control Head

Norm Hall June 18, 2018 Monday Morning Minutes, Operation, Pumps, Selection and Specification, Variable Speed

When we show variable speed pump curves, we also want to show the control curve. This control curve looks very similar to a system curve …

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hvacHVAC Variable Speed Pump Control Headpumpsvariable speed
meter end of curve
meter end of curve

Converting Constant Speed Pumps To Variable Speed – End Of Curve Concerns

Norm Hall June 11, 2018 Monday Morning Minutes, Operation, Pumps, Selection and Specification, Variable Speed

In the R. L. Deppmann Monday Morning Minute from June 4th we offered some tips on converting an existing over-headed constant speed pumping system to a …

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HVAC Centrifugal Pump – Converting Constant Speed To Variable Speed

Norm Hall June 4, 2018 Constant Speed, Monday Morning Minutes, Pumps, Variable Speed

This week a Michigan engineer contacted me to discuss the conversion of an existing and oversized constant speed secondary chilled water pump to variable speed …

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Smart Pump Secondary Hydronic
Smart Pump Secondary Hydronic

Using ECM Smart Circulator Pumps in Primary Pump Applications in Hydronic Systems

Norm Hall November 27, 2017 ECM, ECM, Monday Morning Minutes, Pumps, Variable Speed

Last week I featured the ECM High-Efficiency Smart Circulator Pump used in a secondary application. This week the R.L. Deppmann Monday Morning Minutes continues to …

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Smart Pump Secondary Hydronic
Smart Pump Secondary Hydronic

Using ECM Smart Pumps in Secondary Hydronic Systems

Norm Hall November 20, 2017 ECM, ECM, Monday Morning Minutes, Pumps, Variable Speed

This week the R.L. Deppmann Monday Morning Minutes continues to look at the application of ECM High-Efficiency Smart Circulator Pumps applied to the secondary loop …

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ECMECM Smart PumpsSecondary Hydronic Systems
ecocirc_smart_pump
ecocirc_smart_pump

Smart ECM Pump Applications – Variable Speed Heating & Cooling System

Norm Hall November 6, 2017 ECM, ECM, Monday Morning Minutes, Pumps, Variable Speed

ECM (Electronically Commutated Motor) pumps have electronics built into them which may be used to vary the speed of the pump. If the pump manufacturer …

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ECM Optional Motor
ECM Optional Motor

How Can an ECM Smart Pump Save Energy?

Norm Hall October 30, 2017 ECM, ECM, Monday Morning Minutes, Pumps, Variable Speed

Pumps with ECM or Electronically Commutated Motors have the ability to vary the speed of the pump built into the motor. Can you control the …

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