Mechanical · M-34XTN

Four-Pipe Fan Coil Piping

Elements

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The four-pipe fan coil unit connects to hot water supply and return lines alongside chilled water supply and return lines. Each piping branch includes a typical shutoff valve, balancing valve, union, test plug, and control valve, configured with either pressure-dependent or pressure-independent options. A manual air vent is positioned at the high point of the piping serving the unit as required by general notes. The cooling and heating coil connects to supply and return ducts, while the condensate drain features a trap with a vent terminated two inches above the flood rim level of the condensate tray.

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