Many of the required tests are satisfied with completion of the pre-functional checklists including:
– sequence of operation
– test and balance

Pre-functional tests assures the equipment can perform at various loads as a single entity but may not function as expected when the system is operating.

Purpose

In this example functional performance testing (FPT) is used to verify that the air-side systems, room envelope and building automation (BA) meets the performance requirements specified in the OPR. Before this testing can be conducted on site, the individual components e.g., fan performance, duct leakage and systems are verified for proper operation through the checklists by the Mech Sub.

During the FPT phase each pressurised space is operated through modes of operation (occupied, unoccupied, maximum cooling, minimum vent, fume cupboard exhaust demand and air quality demand) as defined by the zone verification sheets prepared by the BA Sub. Electronic airflow readings from the venturi air valve are used for verification.

Stability of control loops against upset and transient conditions are tested in active and/or passive testing.

FPT testing process runs in, makes tuning adjustments, and proves interactions between room supply and exhaust side systems, directional airflow, and the building automation system.

Random sampling is used by the independent commissioning authority for verification of the functional performance test results.