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§ 1104 — SYSTEM APPLICATION REQUIREMENTS

The Philadelphia Code (2026 Code: The Philadelphia Code and Home Rule Charter current through October 8, 2026) · Philadelphia Code Subcode M, § 1104

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SECTION 1104 SYSTEM APPLICATION REQUIREMENTS

* * * [Delete Section 1104.3.1 and replace as follows:] M-1104.3.1 Air Conditioning for human comfort. High-probability systems used for human comfort shall use Group A1 and A2L refrigerant. Exceptions: 1. Equipment listed for and used in residential occupancies containing a maximum of 6.6 pounds (3 kg) of refrigerant. 2. Equipment listed for and used in commercial occupancies containing a maximum of 22 pounds (10 kg) of refrigerant. 3. Industrial occupancies. [Delete Section 1104.3.2 and replace as follows:] M-1104.3.2 Group A2, A3, and B3 refrigerants. Group A2 and B2 refrigerants shall not be used in high probability systems. Group A3 and B3 shall not be used except where approved. Exceptions: This section does not apply to: 1. Laboratories where the floor areas per occupant is not less than 100 square feet (9.3 m 2 ). 2. Listed self-contained systems having a maximum of 0.331 pounds (150 G) of Group A3 refrigerant. 3. Industrial Occupancies. 4. Equipment listed for and used in residential occupancies containing a maximum of 6.6 pounds (3 kg) of Group A2 or B2 refrigerant. 5. Equipment listed for and used in commercial occupancies containing a maximum of 22 pounds (10 kg) of Group A2 or B2 refrigerant. [Delete Table 1104.3.2 in its entirety, without substitution.] * * *