What type of licensee must place an installation label on a fixed fire extinguisher system after installation?

The requirement for placing an installation label on a fixed fire extinguisher system is specifically associated with a type A or type PL licensee. These licensees are recognized by their qualifications and training in the installation of fire protection systems, which includes ensuring that a fire extinguisher system complies with local codes and standards. The installation label serves as documentation of compliance and indicates that the system has been properly installed and is ready for service.

Type B, C, and D licensees typically have specialized training that may focus on other areas of fire protection, such as inspections, maintenance, or service, but they do not hold the specific authority or responsibility to affix the installation label required after the installation of a fixed fire extinguisher system. Thus, the responsibility of ensuring that the installation is properly documented via the label specifically falls to those licensed under type A or PL.