Fireplaces, chimneys and flues

6.8.14Oil – combustion air

Installations shall be provided with an adequate supply of combustion air.

Table 6: Combustion air to oil appliances

Oil up to 45kW output
England, Scotland, Wales and the Isle of Man550mm2/kW above 5kW rating for an appliance in a room or space
Northern IrelandUp to 6kW rating, 550mm2. Over 6kW, add 550mm2 for each kW above 6kW