320.4 Telephone and Technology Equipment Centers — 2025 California Mechanical Code

[OSHPD 1 & 4] Where telecommunications service entrance rooms, technology equipment centers, or technology distribu- tion rooms are provided in accordance with Section 1224.5 of the California Building Code, the following requirements shall apply: 320.4.1 Power for HVAC systems serving the room(s) shall be supplied by the Equipment Branch pursuant to the California Electrical Code. Where redundant systems are provided, only one shall be required to be supplied by the Equipment Branch. 320.4.2 Mechanical equipment or fixtures that are not directly related to the support of the room shall not be installed in or pass through the room. Exception: Unrelated ductwork may be installed and shall be not less than 10 feet (3048 mm) above the finished floor. 320.4.3 HVAC systems shall be provided to maintain environmental conditions recommended in ASHRAE’s Thermal Guidelines for Data Processing Environment and the requirements of the specific equipment installed. 320.4.4 Technology equipment centers shall have redun- dant cooling systems each of sufficient capacity to pro- vide required cooling during periods of breakdown or maintenance of either system. One system shall be non- hydronic and on essential power.