Proper venting of hydronic condensing boilers is critical for the safety of occupants and the successful operation of the heating plant. The materials that may... READ MORE
Printer Friendly (PDF)
Hydronic System Design – High Delta T Can Improve Boiler Efficiency (Part 2 of 4)
Norm Hall
/
February 7, 2022
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
Printer Friendly (PDF)
Domestic Water Recirculation Codes: Here is What We Heard
Norm Hall
/
April 26, 2021
In the 04-05-2021 Monday Morning Minutes, we asked for your opinion on the length of the domestic water recirculation line from source to fixture. Here... READ MORE
Printer Friendly (PDF)
The weather is warming, and our attention turns away from heating and toward system air conditioning. To protect the cooling tower pumps, we offer a... READ MORE
Printer Friendly (PDF)
Expansion joints in hydronic systems are used when the natural flexibility of the pipe will not handle the calculated movement caused by thermal expansion. Those... READ MORE
Printer Friendly (PDF)
Hydronic Expansion Joints (Part 1)
Norm Hall
/
September 24, 2018
I was recently asked twice in one week, “What is the difference between an expansion joint and a flexible connector in hydronic systems?” Piping flexible... READ MORE
Printer Friendly (PDF)
Hydronic Pump Piping and Trim: Check Valves
Norm Hall
/
February 12, 2018
The R. L. Deppmann Monday Morning Minutes reviewed pipe sizing and flexible connectors over the past few weeks. Today we turn our attention to check valves... READ MORE
Printer Friendly (PDF)
Michigan Rolls ASHRAE 90.1-2013 into the 2015 Michigan Energy Code
Norm Hall
/
September 25, 2017
The 2015 Michigan Energy Code is changing with an expected effective date of September 20, 2017. The long expected changes to the code were filed... READ MORE
Printer Friendly (PDF)
Steam Condensate Pipe Sizing: Steam and Steam Heat Exchanger Basics Part 6
Norm Hall
/
February 13, 2017
Today’s HVAC and Process engineers may choose any number of pipe sizing programs for steam and condensate applications. Put in a load and a pressure... READ MORE
Printer Friendly (PDF)
Steam Pipe Sizing: Steam and Steam Heat Exchanger Basics Part 5
Norm Hall
/
February 6, 2017
Steam pipe sizing is easy with today’s sizing programs. What is behind the programs? This question and others like it are answered in the R... READ MORE
Printer Friendly (PDF)