Where more than one fire alarm control unit is used at the school campus, they shall be interconnected and shall operate all notification appliances.
Exception: Interconnection of fire alarm control units is not required when all of the following are provided:
- Buildings that are separated a minimum of 20 feet (6096 mm) and in accordance with the California Building Code; and
- There is a method of two-way communication between each classroom and the school administrative office approved by the fire enforcing agency; and
- A method of manual activation of each fire alarm system is provided.