Mechanical · M-DT29S

Radiant Floor Heating Two-Way Zone Piping Detail

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A two-way radiant floor heating zone connection is fed by radiant heating supply and return mains. The supply branch incorporates a packaged isolation valve, pressure/temperature port, and manual air vent, followed by an automatic flow limiting valve with additional pressure/temperature ports and a strainer. A slab temperature sensor is embedded in the heated concrete slab with its sensor wire routed in conduit to the building automation system, utilizing a fish tape left abandoned inside the conduit to allow future sensor replacement without slab demolition. A manual air vent is provided at high points of the piping run. The zone feeds a fully recessed manifold enclosure with an access panel, drain valve, and multiple loop connections sized per the heating plans.

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