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Condensing Boiler Specification – Part 5 – Primary-Secondary Thoughts

Norm Hall November 13, 2023Monday Morning Minutes, Boilers, Condensing, Efficiency, Selection and Specification

Primary-Secondary pumping in hydronic heating systems is a tried-and-true method of protecting boilers while benefitting from the use of variable speed pumps in the secondary …

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primary secondayBoilersflow rateCondensing Boiler

Waterside Economizers Part 6: Tower Side Flow Rate

Norm Hall June 19, 2023Monday Morning Minutes, Waterside Economizer, Heat Exchangers, ASHRAE 90.1, Hydronic System Design, Cooling Towers, Codes and Standards, Energy and Water Saving, Chilled Water, Waterside Economizer

The waterside economizer is normally a gasketed plate heat exchanger. There is chilled water on one side and cooling tower water on the other side …

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chilled waterwater side economizersflow ratetower side flow rates

Centrifugal Pumps: Determining Flow Rate Using Amp Readings

Norm Hall January 23, 2023Monday Morning Minutes, Motors, Pumps, Commissioning and Balance, Commissioning and Balance, Pumps

We understand that the best way to determine the flow rate of an operating pump is the proper readout of gauges attached to the pump …

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flow ratepumpscentrifugal pumpsamp readings

Heat Pump Water Heaters: Water Source Units (Part 12)

Norm Hall November 7, 2022Monday Morning Minutes, Water Heaters, Plumbing System Design, Electric, Heat Pump Water Heaters, Heat Pump Water Heaters

Many heat pumps used in Ohio and Michigan are water sources for comfort heating and cooling. Today, we want to look at the water source …

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Water HeatersHydronicsNorm Hallflow rateDelta T

Hydronic Piping – Can it be Too Oversized? Radiant Panel System Example

Norm Hall August 29, 2022Monday Morning Minutes

We recently were asked about the use of ¾” hydronic pipe runouts on a radiant panel system. The contractor had a concern about the long …

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flow ratehydronic pipingPipe VelocitiesRadiant Panel Systemhydronic radiant panel systems

Heat Exchanger Types and Where to Use Them: Part 4 – Variable Flow Applications

Norm Hall July 11, 2022Heat Exchangers, Plate Type, Shell and Tube, Monday Morning Minutes

When should you choose to use a gasketed plate, brazed plate, or shell and tube heat exchanger? Often in HVAC, plumbing, or industrial systems any …

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flow rateGasketed Plate Heat ExchangersHeat ExchangersSelectionNorm Hall
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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primary secondary prinicplesprimary variable flow systemDelta TBoilersNorm HallBell and Gossettflow ratepumps
indoor swimming pool
indoor swimming pool

B&G Pumps in Chlorinated Swimming Pool Applications

Norm Hall December 6, 2021Monday Morning Minutes

We often get questions about using Bell & Gossett pumps in institutional and commercial chlorinated water swimming pool applications. Here are a few suggestions about …

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PumpsBell and GossettBell & Gossettflow rate
Bell & Gossett 1510 Pump Model
Bell & Gossett 1510 Pump Model

Bell & Gossett 1510 Pump Model Numbers: Field Estimation of Flow Rate

Norm Hall October 15, 2018Monday Morning Minutes, Pumps, Identification

Oftentimes an engineer or contractor is contracted to remodel or add to an existing building. During the site visit, they find a pump tag with …

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Bell and Gossettflow ratepumpsb&g
Flow Rate Cartridge
Flow Rate Cartridge

What Is a Flow-Limiting Cartridge or Automatic Balancing Valve?

RL Deppmann January 26, 2017Service Tip of the Month

The flow-limiting cartridge is the heart of the automatic balancing valve and lets the valve act as the maximum flow rate controller.  This maximum flow …

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flow rateflow-limiting cartridge

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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