R. L. Deppmann News and Information

What are ECM Pumps & ECM Smart Pumps

Last week, I defined ECM motors and how they differ from standard PSC and induction motors. We recently had a customer call who was very

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What is an ECM Pump? – Part 1

ECM pumps and Smart pumps are marketing terms being thrown around to indicate a highly efficient variable speed pump that saves more money than you

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ecm motor

Specifications for Thermometers, Gauges, and Test Plugs

This week’s R L Deppmann Monday Morning Minutes wraps up the series on gauges and thermometers with a short review of pressure/temperature test ports and

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specifications thermometer gauge plug

Thermometers for Hydronic HVAC and Plumbing Systems

Temperature is important in heating and cooling systems. Today’s Building Management Systems (BMS) may monitor key areas of interest in the hydronic piping systems. Many

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thermometers hvac plumbing

Michigan Rolls ASHRAE 90.1-2013 into the 2015 Michigan Energy Code

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

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Michigan Energy Code Image

When a Bucket Trap is the Wrong Choice

Although inverted bucket traps have a long history in the steam business and can stand up to demanding application, they’re not always the best choice

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Bucket Trap

Pressure Gauge Accessories for Hydronic HVAC and Plumbing Systems

Sometimes when we add fries and other sides to a food order, the price of lunch and the calorie count can double. Let’s make sure

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Pressure Gauge Accessories

Pressure Gauges for HVAC & Plumbing Systems

Today hydronic pump control, pressure independent balance, ASHRAE 90.1 reset requirements, dual return boiler systems, and other highly technical design options take our attention on

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Miljoco Guage P4598L

Expansion Joints for HVAC Steam Systems

Steel expands when you heat it. This is a fact of nature and shouldn’t be overlooked when designing the HVAC steam piping system. One way

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Adjusting a Variable Frequency Drive (VFD) to Over Speed a HVAC Centrifugal Pump

The R. L. Deppmann Monday Morning Minutes from a few weeks ago discussed the option of a small amount of over speeding on B&G pumps

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