Patent ID: 9513186
Filing Date: 2016-12-06
CPC Classification: F24F,G01M

Claim Text:
1. Diagnostic method for a ventilation unit comprising at least a blower, a discharge conduit, a system of conduits comprising at least two conduits each comprising at least one extraction and/or intake air vent, at least one damper positioned in each conduit, a control unit adapted for controlling said damper, wherein the diagnostic method is carried out in at least one conduit and comprises the following steps: step A: providing at least one measuring device designed to measure the intake and outlet airflow from the damper in each conduit, said measuring device being controlled by the control unit, step B: blocking off the vents of the conduit to be tested, step C: turning on the blower at a determined operating pressure, step D: measuring the airflow of the conduit by means of the measuring device, step E: determining the actual load loss of the damper, step F: determining the actual pressure of the conduit by subtracting the actual load loss of the damper from the determined operating pressure applied at the blower, step G: determining the leakage flow rate value of the conduit based on the actual pressure of the conduit determined in step F and from the airflow of the conduit measured in step D.