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Section P2802 Solar Water Heating Systems

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P2802.1 Water Temperature Control
Where heated water is discharged from a solar thermal system to a hot water distribution system, a temperature-actuated mixing valve complying with ASSE 1017 shall be installed to temper the water to a temperature of not greater than 140°F (60°C). Solar thermal systems supplying hot water for both space heating and domestic uses shall comply with Section P2803.2. A temperature-indicating device shall be installed to indicate the temperature of the water discharged from the outlet of the mixing valve. The temperature-actuated mixing valve required by this section shall not be a substitute for water-temperature limiting devices required by Chapter 27 for specific fixtures.
P2802.2 Isolation Valves
Isolation valves in accordance with Section P2903.9.2 shall be provided on the cold water feed to the water heater. Isolation valves and associated piping shall be provided to bypass solar storage tanks where the system contains multiple storage tanks.

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Section P2802 Water Heaters, Solar Water Heating Systems
Where heated water is discharged from a solar thermal system to a hot water distribution system, a thermostatic mixing valve complying with ASSE 1017 ...
Section P2802 Water Heaters, Solar Water Heating Systems
Where heated water is discharged from a solar thermal system to a hot water distribution system, a temperature-actuated mixing valve complying ...