John Siegenthaler, P.E.

Pellet boiler control strategies

The control logic for this system was based on a pellet boiler that operated under its own internal controller.

February 16, 2016

Outdoor reset can improve performance.

Controlling a pellet boiler system

John Siegenthaler, P.E.

February 16, 2016

Outdoor reset can improve performance.

February 2016 The Glitch & The Fix -- Glitch drawing

Hydraulic separator piping to indirect water heater, boilers

The Glitch & The Fix, February 2016

John Siegenthaler, P.E.

February 11, 2016

A designer needs to connect an indirect water heater to a multiple boiler system. He selects a hydraulic separator and connects the piping of the indirect water heater on the same side as the boilers.

Retrofitting with a pellet boiler

John Siegenthaler, P.E.

February 2, 2016

Details matter when adding a pellet boiler to an existing system.

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.

Retrofit with biomass boiler

The Glitch and The Fix, January 2016

John Siegenthaler, P.E.

January 12, 2016

A heating professional is asked to retrofit a biomass boiler to an existing distribution system consisting of older cast-iron radiators, iron piping and an oil-fired boiler.