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Hydronic piping systems shall be installed to permit the system to be drained. The system shall drain by indirect waste in accordance with Section 1001.4. Embedded piping underground or under floors is not required to be designed for draining the system.

Related Code Sections

1221.4 Hydronics, System Drainage
Hydronic piping systems shall be installed to permit the system to be drained. The system shall drain by indirect waste in accordance with Section ...