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M-1801.3 Ducts: Ducts utilized in solar heating and cooling systems shall be constructed and installed in accordance with Chapter 3.

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M-1802.4.1 Pressure and temperature: The solar energy system components containing pressurized fluids shall be protected against pressures and temperatures exceeding design limitations with a pressure and temperature relief valve. Each section of the system where excessive pressures are capable of developing shall have a relief device such that a section cannot be valved off or otherwise isolated from a relief device. Relief valves shall comply with the requirements of Section [M-605.3] M-709.2.1 and discharge in accordance with Section [M-605.5] M-709.2.2.

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M-1802.4.4 Expansion tanks: Liquid single-phase solar energy systems shall be equipped with expansion tanks sized [in accordance with Section M-609.0] adequately for the system.

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