Options for achieving hydraulic seperation between circulators Keeping the peace. John Siegenthaler, P.E. October 5, 2016 Twenty years ago, the contemporary approach to prevent interference between simultaneously operating circulators in a hydronic system was primary/secondary piping.Read More
Primary/secondary systems need proper detailing to work correctly Double dipping in primary/secondary systems. John Siegenthaler, P.E. September 28, 2016 A seemingly good idea that doesn’t work.Read More
How to eliminate ghost flow and recirculation issues Don’t repeat design mistakes. John Siegenthaler, P.E. August 31, 2016 How to eliminate ghost flow and recirculation issues.Read More
10 hydronic lessons learned July 2016 marks my 20th anniversary of writing the Hydronics Workshop for Plumbing & Mechanical magazine. John Siegenthaler, P.E. July 22, 2016 Embrace the learning curve.Read More
Outdoor reset is the 'smart' choice Beyond smartphones, we now have smart watches, smart thermostats and smart windows. John Siegenthaler, P.E. June 27, 2016 It’s not sexy, but outdoor reset is still a ‘smart’ choice. Read More
Striving for hydronic ideals in heating systems Let’s start with heat exchangers. John Siegenthaler, P.E. May 23, 2016 Strive for what seems impossible at the present.Read More
Simple yet elegant hydronic systems As the North American hydronics industry has grown, so has the complexity of its systems. John Siegenthaler, P.E. April 19, 2016 Hydronic systems donít have to be large or complex to be state-of-the-art.Read More
How to optimize coil heat exchanger flow Flow face off. John Siegenthaler, P.E. March 21, 2016 Many systems that use renewable energy heat sources have large thermal storage tanks. Read More
Pellet boiler control strategies The control logic for this system was based on a pellet boiler that operated under its own internal controller. John Siegenthaler, P.E. February 16, 2016 Outdoor reset can improve performance. Read More
A simple boiler retrofit During the last year I’ve been reviewing submittals for proposed heating systems using pellet-fired boilers. John Siegenthaler, P.E. January 20, 2016 Details matter when adding a pellet boiler to an existing system. Read More