Spillage Test - Live Video Lecture
The spillage test is completely separate from the flue flow test . The spillage test is designed to show the engineer that the combination of the ventilation, the appliance, the flue is effective enough to prevent any products of combustion from entering the room in which the appliance is situated. The test itself is carried out with the appliance in place , turned ON, and uses a smoke match NOT a smoke pellet . It may have to be carried out more than once depending on the other appliances and electrical items in the room.