Hartford Loop

Heating · Common Steam Systems · printed page 193 (PDF page 194)

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Book index entries

Hartford Loop – on Steam Heating Steam Heat – Hartford Loop Steam Heat – Systems

Text in the illustration

air vent
exhaust flue
hot steam
supply main
main vent
returning condensate
dry return
boiler water line
water
steam boiler
the Hartford Loop prevents water from draining out of the boiler if there is a leak in the wet return lines (upstream of the loop)
burner
cross section

Generated explanation

The cross-section schematic shows a steam boiler with a burner and exhaust flue supplying an upstairs radiator through a supply main. Red arrows indicate steam moving toward the radiator, while blue arrows indicate condensate returning through the dry return and descending return piping. An air vent is shown on the radiator and a main vent on the return piping. A dashed circle highlights the Hartford Loop connection near the boiler water line. The annotation explains that this arrangement prevents boiler water from draining out if the wet return piping upstream of the loop leaks.

Components

steam boiler burner exhaust flue steam supply main radiator radiator air vent main vent dry return wet return piping Hartford Loop

Materials

metal piping

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