The Glitch & The Fix

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A customer, who originally agreed to install a zoned radiant floor heating system supplied by a modulating/condensing boiler, changes his mind after the system has been designed.

A multiple boiler system has been configured to supply two loads as shown below.

Using a gas-fired cast-iron boiler to supply zoned radiant floor heating.

A multiple boiler system is being planned to supply several independently controlled heat zones.

The owner loves the idea of warm floors, but also wants nail-down hardwood flooring.

Circulators are experiencing overheating issues. There’s also heat getting into zones when that heat is not needed.

It takes more than simply running pool water directly through the boiler. Don’t laugh; it’s been done!

In some systems, outdoor reset control can vary the supply water temperature from a relatively high design temperature down to just above room temperature.

Eager to keep up with new technology, an installer decides to install a hydraulic separator between a boiler and distribution system.

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