1213.1 Water Temperature Controls — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Mechanical Code (Title 24, Part 4) § 1213.1 · Effective January 1, 2026 · Official source: Building Standards Commission
A heat source or system of commonly connected heat sources shall be protected by a water-temperature-activated operating control to stop heat out
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put of the heat source where the system water reaches a pre-set operating temperature.
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