Featured image for “Flo-Control Gravity Check Valve Replacement”
Norm Hall
 / 
November 28, 2022
Check Valves
, 
Control Valves
, 
Hydronic Design
, 
Monday Morning Minutes
, 
Valves
You have a Bell & Gossett Flo-Control valve on the primary secondary bridge of an older hydronic system. It has been there for over five... READ MORE
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Featured image for “Hot Water Heater Decarbonization: Using Condenser Water to Pre-Heat the Incoming Cold-Water”
Norm Hall
 / 
June 13, 2022
Heating
, 
Monday Morning Minutes
, 
Plumbing System Design
, 
Water Heaters
Decarbonization does not always automatically become electrification. The enterprising engineer will first look at diverse ways to reduce the carbon use. Here is an example... READ MORE
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Featured image for “Carbon Reduction is the Dream. Here’s How to Make it a Good One.”
Norm Hall
 / 
May 23, 2022
Decarbonization
, 
Decarbonzation
, 
Hydronic Design
, 
Plumbing System Design
Carbon reduction in building design is critical to the lifestyle of our future generations. Most engineers and their owner clients understand the concerns and welcome... READ MORE
Featured image for “Primary-Secondary Variable Heating Systems: Should I Pump Into the Boiler or away from It?”
Norm Hall
 / 
April 25, 2022
Boilers
, 
Hydronic Design
, 
Monday Morning Minutes
, 
Primary Secondary Piping
, 
Primary Variable
Previously, the R. L. Deppmann Monday Morning Minutes looked at pump location in a primary-variable boiler heating system. We made a very definitive statement about... READ MORE
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Featured image for “Primary Variable Heating Systems: Should I Pump Into the Boiler or Out of It?”
Norm Hall
 / 
April 11, 2022
Boilers
, 
Expansion & Compression Tanks
, 
Hydronic Design
, 
Monday Morning Minutes
, 
Primary Variable
, 
Pumps
, 
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... READ MORE
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Norm Hall
 / 
March 14, 2022
Cooling Towers
, 
Hydronic Design
, 
Monday Morning Minutes
, 
Pumps
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... READ MORE
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Featured image for “Condensing Boiler Temperature Reset for Increased Efficiency (Part 3 of 4)”
Norm Hall
 / 
February 14, 2022
Boilers
, 
Condensing
, 
Delta T
, 
Delta T
, 
Hydronic Design
, 
Monday Morning Minutes
We are continuing with the series on Condensing Heating System Efficiency. Today, we are discussing condensing boiler temperature reset for increased efficiency. Hydronic condensing heating... READ MORE
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Featured image for “Hydronic System Design – High Delta T Can Improve Boiler Efficiency (Part 2 of 4)”
Norm Hall
 / 
February 7, 2022
Boilers
, 
Condensing
, 
Delta T
, 
Delta T
, 
Heating
, 
Hydronic Design
, 
Monday Morning Minutes
How can you increase the operating efficiency of your condensing boiler heating system? This question was raised in the last R. L. Deppmann Monday Morning... READ MORE
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Featured image for “Permanent Magnet (PMAC) Motors & Electrically Commutated (ECM) Motors in Hydronic Systems (Part 3 of 3)”
Norm Hall
 / 
December 27, 2021
Hydronic Design
, 
Monday Morning Minutes
, 
Pumps
You understand the differences between premium efficiency (IE3) motors and PMAC or ECM motors (IE4&5). You understand the cost implications of both styles of motors.... READ MORE
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Featured image for “Permanent Magnet (PMAC) Motors & Electronically Commutated (ECM) Motors in Hydronic Systems (Part 2 of 3)”
Norm Hall
 / 
December 20, 2021
Hydronic Design
, 
Monday Morning Minutes
, 
Pumps
Can I and should I specify permanent magnet motors (PMAC) on my hydronic system pumps? The last R. L. Deppmann Monday Morning Minutes showed the... READ MORE
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