MD 233660 012 Down-Feed Hot Water Fin-Tube Piping

A detailed engineering drawing illustrating a down-feed hot water fin-tube or heating panel (Runtal) piping system. The diagram includes a series of labeled components connected by lines and arrows representing pipes. Key components labeled in the upper section include a manual air vent, isolation valve, manual balance valve, control valve, union, strainer, and an additional isolation valve. The pipes are arranged vertically and horizontally with arrows indicating the flow direction. In the center, there is a fin tube or heating element with connections and flow directions indicated. Text annotations provide instructions for the system setup, such as placing a drain valve with a hose bib at the return and low point, and instructions for locating valves in accessible positions. The notes outline construction guidelines, advising the use of threaded adapters and reducers, and emphasize the importance of coordinating fin tube piping with its enclosure.