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P-814.1 Hot Water Systems

Philadelphia Plumbing Code > 8 Water Supply and Distribution > P-814 Check Valves > P-814.1 Hot Water Systems

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Check valves shall not be installed anywhere in the cold water supply pipe leading to an existing water heating system unless:

Suitable pressure relief valves and temperature relief valves are also installed; and
Where copper tanks are used, a suitable vacuum relief valve is installed at or adjacent to the copper tank.

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P-814.1 Water Supply and Distribution, Hot Water Systems

Check valves shall not be installed anywhere in the cold water supply pipe leading to an existing water heating system unless: Suitable pressure ...

Philadelphia Plumbing Code > 8 Water Supply and Distribution > P-814 Check Valves > P-814.1 Hot Water Systems

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New service hot water systems that are part of the addition shall comply with Section R403.5 ...

Philadelphia Energy Conservation Code > 5 [RE] Existing Buildings > R502 Additions > R502.1 General > R502.1.1 Prescriptive Compliance > R502.1.1.3 Service Hot Water Systems

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New service hot water systems that are part of the alteration shall comply with Section R403.5 ...