Mixing valves, boilers and radiant panels John Siegenthaler, P.E. January 22, 2012 An installer uses a four-way motorized mixing valve to interface between a conventional gas-fired cast-iron boiler and a low-temperature radiant panel system.Read More
Muddy water John Siegenthaler, P.E. December 9, 2011 An installer decides to replace an old cast-iron boiler with a modern mod/con unit that has a 5:1 turndown ratio and integral outdoor reset control.Read More
Poor Man's Radiant John Siegenthaler, P.E. November 30, 2011 In an attempt to avoid purchasing what he considers “fancy valves,” an installer constructs the system shown with globe valves.Read More
Cold Showers And Rusty Vents John Siegenthaler, P.E. October 28, 2011 The hydronic system shown was intended to provide heat to a radiant floor slab and an indirect water heater.Read More
Geothermal Heat Pump, Mod/Con Boiler For Radiant Floor Heating John Siegenthaler, P.E. September 30, 2011 A homeowner tells his installer that he wants a geothermal heat pump as well as a mod/con boiler to supply the radiant floor heating in his new home.Read More
Hydraulic Separator Connections John Siegenthaler, P.E. May 19, 2011 Over the last few years, we’ve discussed what hydraulic separators are for and how they should be installed.Read More
Design As You Solder John Siegenthaler, P.E. April 1, 2011 A hydronic heating system from someone who doesn't want to learn 'a lot of unnecessary knowledge.'Read More
Overly Complicated John Siegenthaler, P.E. January 19, 2011 This system is supposed to provide radiant floor heating to the first and second floors of a building. Read More
Overkill John Siegenthaler, P.E. December 6, 2010 Over the last few years, hydraulic separators have been gaining popularity in the North American hydronics market. Read More
Gasification Rectification John Siegenthaler, P.E. November 17, 2010 Increasing fuel costs, in combination with the desire to be carbon-neutral, has prompted a homeowner to purchase a wood gasification boiler.Read More