One of the more frequent questions we are asked has to do with ASME label requirements for the thermal expansion tank on water heaters. When …
HVAC Hydronic Pumps: Impeller Trimming with a Drive (VFD)
In the last R. L. Deppmann Monday Morning Minute we covered the use of a B&G Triple Duty Valve to set the maximum speed in …
HVAC Hydronic Pumps: B&G Triple Duty Valve for Proportional Balance
The ASHRAE Standard 90.1-2013 and the State of Michigan 2015 Energy Code both require the trimming of impellers or reduction in the maximum speed when …
Updating Old Steam Systems with a Modern Boiler Feed Unit? Don’t Forget Return Lag Time.
This article was originally published by Steve Almgreen of the Bell & Gossett Steam Team. The Situation Here is a steam system with a recently …
Hydronic Pump Piping and Trim: Pump Suction Energy Levels
I frown a bit when reading about a product and the only place you find a key tip to avoiding problems is in the troubleshooting …
Hydronic Pump Piping and Trim: The Pump Suction
The piping at the suction side of the pump is the most important and, for some engineers and designers, the most misunderstood part of hydronic …
Hydronic Pump Piping and Trim: Flexible Diffuser Fittings
Pump installations tend to require a great number of spool pieces to meet the Hydraulic Institute’s and the equipment manufacturers’ recommendations. Before we get into …
14 Steps to Peak Performance and Efficiency in Steam Heating Systems
Follow this step by step below to improve the energy efficiency of steam systems. 1. Make sure boiler is clean The water in the boiler …
Hydronic Pump Piping and Trim: Suction Diffuser Fittings
Pump suction piping is one of the areas where problems of frequent repair or noise will originate. There is a lot of confusing information out …
Hydronic Pump Piping and Trim: Suction Side
The pump suction piping and specialties are somewhat simple but can be a cause of headaches if a few simple rules are forgotten. This week …