In this Service Tip of the Month, we demonstrate how to limit the speed of the pump using the Danfoss Variable Frequency Drive (VFD).
Constant Flow Cooling Tower Pumps & Variable Frequency Drives (VFD)
The blistering hot weather here in southeast Michigan caused me to turn my attention to cooling tower pumps and their control. Cooling tower pump control …
Hydronic Expansion Tank Location in High Rise Projects (Part 3)
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. …
Hydronic Expansion Tank Location in High Rise Projects (Part 2)
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 …
Bell & Gossett – July Webinar Series
We are pleased to announce Bell & Gossett July 2020 webinar schedule. You can register for any upcoming or past webinars on Bell & Gossett’s …
Hydronic Expansion Tank Location in High-Rise Projects (Part 1)
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 …
Bell & Gossett Circuit Setter Setting with a Readout Meter
In this Service Tip of the Month, we will be discussing and demonstrating the operation of reading, adjusting, and setting a Bell & Gossett Balance …
Bell & Gossett – June Webinar Series
We are pleased to announce Bell & Gossett June 2020 webinar schedule. You can register for any upcoming or past webinars on Bell & Gossett’s …
Open Cooling Tower System Pumps – Balancing the Pump Using a Drive
Open cooling tower pumps are traditionally operated as constant speed. When balanced, the extra pump head or over-heading is throttled across the discharge balance valve …
Balancing & Trimming Hydronic Constant Speed Pumps
The HVAC hydronic system is proportionally balanced per ASHRAE 90.1 energy standards. The proportional balance, when properly completed, will result in all the extra pump …