1104.3 Institutional Occupancies — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-09-25 · California
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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) § 1104.3 · Effective January 1, 2026 · Official source: Building Standards Commission
The RCL value required in Section 1104.2 shall be reduced by 50 percent for the areas of institutional occupancies. The total of Group A2, B2, A3, and B3 refrigerants shall not exceed 550 pounds (249.5 kg) in the occupied areas and machinery rooms of institutional occupancies. [ASHRAE 15:7.2.1]
Exception: The total of all Group A2L refrigerants shall not be limited in machinery rooms of institutional occupancies.
[OSHPD 1 & 4] Exception: For technology equipment cen- ters not attached to a patient care area the amounts shown in Table 1102.3 may be calculated at 100 percent.
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