How the Smoother Works

Other circulator controls only pump hot water through the radiators when the burner is on.

The Smoother runs the circulator pump continuously during burner firing, and after the burner cycle ends the circulator pump continues to run to “stir” the water long enough that even the furthest or lowest-flow radiator is brought to the same temperature as all the rest.

By running the pump continuously during all burner firing, the build-up of temperature gradients among the radiators is limited to the temperature rise across the boiler. After the burn ends, the small temperature differences that have built up during the burn are quickly stirred out by the additional circulator running time.

Read our Technical Paper: Even Heating of Hot Water Radiators for the full details about how the Smoother works. This is a .PDF file. Click here to download the Adobe Acrobat .PDF reader.