The Glitch & The Fix

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To say this system is a piping aberration is going easy on it.

An installer is asked to provide a system that supplies two zones of fin-tube baseboard and two zones of floor heating.

When floor heating and domestic water heating occurred at the same time, I discovered there was no flow through the heat exchanger in the indirect tank.

The cardinal rule of multiple boiler systems is to only provide flow through a boiler that’s operating.

At one point in time, this schematic appeared in a manufacturer's installation manual.

An installer was asked by a client to use both a ground source heat pump and a boiler as alternative heat sources in a zoned, low-temperature hydronic distribution system.

An installer decides to replace a 30-year-old cast-iron boiler with a modern mod/con unit.

An installer uses a 4-way motorized mixing valve to interface between a conventional gas-fired cast-iron boiler and a low temperature radiant panel system.

A project requires both medium and low temperature radiant floor panels. The installer proposes the following system design. 

As the price of fuel oil skyrockets, there is increasing interest in geothermal heat pumps as a heat source for hydronic radiant floor heating.