Is functional testing required when notification appliances are added or removed?

Functional testing is not required when notification appliances are added or removed. The primary purpose of functional testing is to ensure that the entire fire alarm system operates as intended after significant modifications, typically related to the system's configuration or its primary components. Adding or removing notification appliances—like horns, strobes, or speakers—does not fundamentally alter the overall performance or functionality of the system to such an extent that operational testing becomes necessary.

While it is good practice to verify that any newly added or removed appliances are functioning correctly within the system, the formal requirement for functional testing applies more to major changes that impact the system's integrity or configuration, such as modifications to the control panel or significant alterations to detection zones. Hence, the correct understanding is that functional testing is not mandated for the specific instances of adding or removing notification appliances.