// CODE SNIPPET
1107.1.7 Group A2L and B2L Refrigerants
JUMP TO FULL CODE CHAPTER
Where
refrigerant of Groups A2L or B2L are used, the requirements
of Class 1, Division 2, of the California Electrical
Code, shall not apply to the machinery room provided
that the conditions in Section 1107.1.7.1 through Section 1107.1.7.3 are met.
The mechanical ventilation system in the machinery room is run continuously in accordance with Section 1106.2.5 and failure of the mechanical ventilation system actuates an alarm, or the mechanical ventilation system in the machinery room is activated by one or more refrigerant detectors, in accordance with the requirements of Section 1106.2.2.1 and Section 1106.2.2.2.
For the
refrigerant detection required in Section 1106.2.2.1,
detection of refrigerant concentration that exceeds
25 percent of the LFL or the upper detection limit of
the refrigerant detector, whichever is lower, shall
automatically de-energize the following equipment
in the machinery room:
- refrigerant compressors
- refrigerant pumps
- normally-closed automatic refrigerant valves
The machinery room shall comply with Section 1107.1.8.
Related Code Sections
1107.1.7 Refrigeration, Group A2L and B2L Refrigerants
Where
refrigerant of Groups A2L or B2L are used, the requirements
of Class 1, Division 2, of the California Electrical
Code , shall not apply ...
California Mechanical Code 2019 > 11 Refrigeration > 1107.0 Machinery Room, Special Requirements > 1107.1 General > 1107.1.7 Group A2L and B2L Refrigerants
1104.5 Refrigeration, Flammable Refrigerants
The total of Group A2,
B2, A3, and B3 refrigerants, other than Group A2L and B2L
refrigerants shall not exceed 1100 pounds (498.9 kg) without ...
California Mechanical Code 2019 > 11 Refrigeration > 1104.0 Requirements for Refrigerant and Refrigeration System Use > 1104.5 Flammable Refrigerants
1103.1.1 Refrigeration, Safety Group
class. For the purposes of this chapter, the refrigerant
Groups A1, A2L, A2, A3, B1, B2L, B2, and B3
shall be considered to be individual and distinct ...
California Mechanical Code 2019 > 11 Refrigeration > 1103.0 Classification > 1103.1 Classification of Refrigerants > 1103.1.1 Safety Group
1107.0 Refrigeration, Machinery Room, Special Requirements
systems that contain more
than 110 pounds (50 kg) of any Group A2L, A2, A3,
B2L, B2, or B3, refrigerant shall have not less than one
exhaust air inlet ...
1107.1 Refrigeration, General
systems that contain more
than 110 pounds (50 kg) of any Group A2L, A2, A3,
B2L, B2, or B3, refrigerant shall have not less than one
exhaust air inlet ...
California Mechanical Code 2019 > 11 Refrigeration > 1107.0 Machinery Room, Special Requirements > 1107.1 General