For the first time, the standard includes specific exemptions for small telecom shelters (under 50 sq ft) and battery backup rooms, acknowledging their intermittent and low-density loads.
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, is the current active version, superseding the 2019 edition. It establishes the minimum energy efficiency requirements specifically for the design and operation of data centers, separate from general building standards like ASHRAE 90.1. Core Components of ASHRAE 90.4 ashrae 904 pdf upd
Clarified which types of "conditioned spaces" within a data center fall under the standard. 📂 Accessing the Document For the first time, the standard includes specific
There is no ASHRAE 904 . If a PDF claims to be “ASHRAE 904,” it is either a mislabeled 90.4 or a fake document. For the first time