Mechanical · M-T7ZZB

Stacked Coil Piping Detail

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Stacked cooling and heating coils are connected with matching coil pipe sizes and arranged for counterflow, air-to-water operation with clear allowance for coil removal. The piping assembly incorporates a control valve, a Bell & Gossett circuit setter, typical eccentric reducers, and three three-quarter-inch valves with hose fittings. Thermometer sockets are specified with a range of thirty to one hundred thirty degrees Fahrenheit for chilled water return and thirty to two hundred forty degrees Fahrenheit for heating return. Piping immediately upstream of the control valve is sized to a maximum of two pipe sizes over the valve size for a minimum of five pipe diameters. A secondary drain pan is positioned beneath the lower coil and routed to a typical drain trap.

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