
6172/B.S. 5440, Par. 2 and B.S. 6891 Current Editions.The following requirements must be observed: a) The cooker should not be installed in a bed sitting room with a volume of less than 20m3. If it is installed in a room of volume less than 5m3 an air vent of effective area of 110cm2 is required, if it is installed in a room of volume between 5m3 and 10m3 a supplementary airvent area of 50cm2 is required, if the volume exceeds 11m3 no airvent is required. However, if the room has a door or a win