AIR FLOW TEST (PLUG FAN)
Scope of this test is to evaluate the actual air volume and static pressure delivered by the installed fan when running at the design RPM. Actual fan curve will be plotted and interaction of the fan curve with the system curve will determine the actual fan operating point. Actual fan operating point shall not deviate +/- 5%on the air volume and +/- 10 % on the static pressure.
Scope of this test is to evaluate the vibration level at the actual fan speed. Measured vibration level shall not exceed the limits indicated in the ISO 14694:2003 for class BV-3 table 5 – Vibration levels limit for test manufacturer’s workshop.
CONTINUITY TEST ON EARTH
Scope of this test is to evaluate the electrical continuity. Measured resistance shall not exceed 5 Ω with a test current higher than 200mA and open circuit voltage ranging from 4 to 24V DC.
MECHANICAL STRENGTH OF CASING
Purpose of this test is to verify the Mechanical strength of the AHU casing in accordance to EN1886.
Test shall deemed to pass if deflection is within the limit of the class D1 of EN1886 (i.e. 4 mm/m maximum relative deflection at 700 Pa)
AIR TIGHTNESS TEST
Purpose of this test is to verify the air tightness of the AHU at 700Pa positive pressure.