Each SUPREME fireplace is equipped with an automatic air control that gradually reduces the combustion air to its preset amount. The preset amount, that is the rate of combustion, is determined by the position of the air control handle. The position of the air control handle is determined by the operator depending on his/her heating requirements and the type of wood used.

In order to burn wood at a faster rate, the operator should turn the control handle towards the right when facing the fireplace. To burn wood at a slower combustion rate, the operator must turn the control handle towards the left.

Regardless of the position of the air control handle, when starting a fire or adding a new load of wood, the operator must push the control handle inwards and then pull it outwards to maximize the amount of combustion air. As the temperature of the fireplace rises, the thermostatic bimetal will gradually reduce the combustion air to the level determined by the position of the control handle. The position of the control handle should not be changed once the fire is started.