Norm Hall
/
January 1, 2018
In the last R. L. Deppmann Monday Morning Minute we selected a B&G Pump after determining flow rate and pump head. This week we look at... READ MORE
Printer Friendly (PDF)
Variable Speed and ECM Smart Pumps in Domestic Hot Water Recirculation Systems
Norm Hall
/
December 11, 2017
Domestic hot water supply temperatures and the recirculation system control are receiving a great deal of attention these days. Concerns about legionella growth with low-temperature... READ MORE
Printer Friendly (PDF)
In today’s economy there are many small office, retail, and tenant fit-out work jobs than large expansive projects. These smaller projects come with tighter budgets. Here is a tool you may not be aware exists. Bell and Gossett ECO-CIRC under sink recirculating pump available for tank type water heater as well as tank-less systems. High efficiency and lead free brass construction. [Read more…]... READ MORE
Printer Friendly (PDF)
The last three articles outlined pump selection in domestic water recirculation systems. In general, these systems have low flow and low head pumps. What happens in a high rise with pressure reducing valves (PRV) in the hot water supply? The pressure reducing valve introduces a fixed pressure drop which must be added to the calculations. [Read more…]... READ MORE
Printer Friendly (PDF)
The purpose of the domestic water recirculation system is to delivery hot water near a fixture during times when there is no draw. If someone is using hot water in the next room or apartment or process; the hot water is near enough to your fixture so the hot water is delivered in seconds, not minutes. [Read more…]... READ MORE
Printer Friendly (PDF)