MD 238216 001 HWH Stacked Coil

A technical diagram illustrating the piping connections for stacked hot water heating coils. The left side shows an arrangement of various valves and pipes. At the top, there is a 2-way control valve and an automatic air vent labeled “TYP” for typical. Below are interconnected lines labeled HWHR and HWHS. Along these lines, components include a strainer with a blowdown and hose end connection, pressure gauges, thermometers, and balance valves, marked as typical. There are also Pete’s plugs and a 1″ drain valve test with hose end connection. On the right side are two large rectangular boxes labeled “Section #1” and “Section #2,” with arrows indicating airflow direction. The diagram includes notes at the bottom, addressing piping specifics and installation guidelines.