An installer is asked to provide a relatively simple single-zone, slab-type floor heating system supplied by a geothermal water-to-water heat pump. He’s heard that a hydraulic separator is a good component in such systems.
An engineer is planning underground insulated piping for a small district heating system, which receives heat from a central boiler plant and distributes it to three separate buildings. He is planning what he calls a “primary/secondary” piping system.
An installer is asked to use a pellet-fired boiler to supply heat to two zones of low-temperature radiant floor panels. The system includes a three-way motorized mixing valve to reduce the supply water temperature to the distribution circuits.
A heating contractor who’s trying out his first wall-mounted mod/con boiler installs it as shown above. When buying the boiler, the contractor was told to use a pair of closely spaced tees to separate the boiler and distribution system.
For plumbers in Flint, Mich., “it’s been a heck of a year,” said Harold T. Harrington, a master plumber and pipefitter working as the business manager for Flint’s United Association of Plumbers and Pipefitters, Local 370. Read more stories in 2017 March Issue.