The Glitch & The Fix

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A manually set three-way mixing valve was installed to regulate the supply temperature to the concrete-slab radiant floor system.

A heating contractor, who’s tired of coaxing 500-pound cast-iron boilers into homes, decides to try out a wall-mounted mod/con boiler because of its light weight and side wall venting.

The installer feels that a mix of primary/secondary piping along with some “alternative techniques” is appropriate.

As part of an extensive renovation and insulation upgrade, the owner decides to upgrade the heat and convert the 2-pipe steam system to hot water.

An installer is advised to use a buffer tank to prevent short cycling of a low mass boiler serving several independently controlled space heating zones ...

An installer is asked if a geothermal heat pump can be combined with radiant floor heating.

The installer got a great price on a “contractor pack” of 3/4-inch copper tees, so the supply and return manifolds are built with 3/4-inch copper, as are all the zone circuits ...

Here’s an extremely messed up installation for you to ponder.

There are several piping errors in this proposed multiple boiler system installation.

Every time the circulator shuts off, the owner hears banging and gurgling sounds in the pipes ...