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skating rink
skating rink

Ice Rink Cooling System – Commissioning the Glycol Expansion Tank

Norm Hall November 29, 2021 Chilled Water, Expansion and Compression Tanks, Expansion Tanks, Expansion/Compression Tanks, Glycol and Water Quality, Glycols, Hydronic System Design, Monday Morning Minutes

A customer recently called us about an unusual occurrence in a closed hydronic cooling system for an ice rink. The system was filled using a …

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follow the rules
follow the rules

Hydronic Expansion Tanks: Can I Pump into the Point of No Pressure Change (PNPC) to Reduce the Tank Size? (Part 3 of 3)

Norm Hall March 22, 2021 Expansion and Compression Tanks, Expansion/Compression Tanks, Hydronic System Design, Monday Morning Minutes, Tanks

Can we pump into the point of no pressure change in a closed hydronic system? We gathered feedback on the proposed system by a local …

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follow the rules
follow the rules

Hydronic Expansion Tanks: Can I Pump into the Point of No Pressure Change (PNPC) to Reduce the Tank Size? (Part 2 of 3)

Norm Hall March 8, 2021 Expansion and Compression Tanks, Expansion/Compression Tanks, Hydronic System Design, Monday Morning Minutes, Tanks

We are gathering input from the last R. L. Deppmann Monday Morning Minutes asking for your feedback on the potential to “not follow the rules.” …

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follow the rules
follow the rules

Hydronic Expansion Tanks: Can I Pump into the Point of No Pressure Change (PNPC) to Reduce the Tank Size? (Part 1 of 3)

Norm Hall March 1, 2021 Expansion and Compression Tanks, Expansion/Compression Tanks, Hydronic System Design, Monday Morning Minutes, Tanks

We often design system after system and designate the sizing of expansion tanks to the newest employee on the team. It is just a matter …

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Hydronic Expansion Tanks: Have I Ever Pumped into the Point of No Pressure Change?

Norm Hall February 22, 2021 Expansion and Compression Tanks, Expansion/Compression Tanks, Hydronic System Design, Monday Morning Minutes, Tanks

There is a constant flow of hydronic system design questions coming into R. L. Deppmann Company. Sometimes the questions are about complicated hydronic, steam, or …

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Hydronic Expansion Tank
Hydronic Expansion Tank

Hydronic Expansion Tank Location in High Rise Projects (Part 3)

Norm Hall July 20, 2020 Expansion and Compression Tanks, Expansion/Compression Tanks, High Rise, Hydronic System Design, Monday Morning Minutes, Tanks

Part 2 of this series on expansion tank locations showed the expansion tank in a high-rise hydronic system located at the top of the system. …

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Hydronic Expansion Tank
Hydronic Expansion Tank

Hydronic Expansion Tank Location in High Rise Projects (Part 2)

Norm Hall July 13, 2020 Expansion and Compression Tanks, Expansion/Compression Tanks, High Rise, Hydronic System Design, Monday Morning Minutes, Tanks

Where should the hydronic expansion tank be in a tall high-rise hydronic system design? In part 1 of this article, I identified the size and …

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Hydronic Expansion Tank
Hydronic Expansion Tank

Hydronic Expansion Tank Location in High-Rise Projects (Part 1)

Norm Hall July 6, 2020 Expansion and Compression Tanks, Expansion/Compression Tanks, High Rise, Hydronic System Design, Monday Morning Minutes, Tanks

We received an interesting question from an Ohio engineer working on the renovation of a 30-story high-rise hydronic heating system. This engineer was looking out …

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Hydronic Cold Fill Makeup Valve
Hydronic Cold Fill Makeup Valve

Hydronic Cold Fill Makeup Valve: Keep it Open or Closed?

Norm Hall November 25, 2019 Expansion and Compression Tanks, Expansion/Compression Tanks, Hydronic System Design, Monday Morning Minutes, Pressures, Tanks

The cold fill pressure setting in a closed hydronic heating or cooling system is still one of the key problems uncovered when our customer service …

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Expansion Tank Air Side Maintenance Schedule

Norm Hall November 18, 2019 Expansion and Compression Tanks, Expansion/Compression Tanks, Hydronic System Design, Monday Morning Minutes, Tanks

I recently visited a school mechanical room and was asked about the relationship between the makeup pressure reducing valve setting and the expansion tank pressure …

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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