One of the most important pre-conditions for an efficient fireplace is the chimney. In principle, the chimney functions as the engine of the stove. If the installation does not produce the correct draught, it will not function as it should. New stoves place higher demands on, e.g., draught and chimney conditions than older stoves using traditional combustion principles.

Draught
Draught in the chimney is created as a result of the difference between the high temperature in the chimney and the relatively colder outside temperature.

Good draught is created when:
• There is a big difference between the temperature in the chimney and outside.
• The weather is clear.
• The chimney has the right height.

Reduced draught will occur when:
• The temperature difference is too small. For example, if the chimney is poorly insulated.
• The outside temperature is too high. For example, during the summer.
• There is no wind.
• The chimney does not have the right height, so that it is sheltered by the roof face and high trees. In these cases, there is a high risk of smoke coming back down the chimney.
• Air enters the chimney where it shouldn’t, e.g. through crack joints.

Contact your chimney sweep to have your chimney regularly checked.

Installation
Connecting a stove to the chimney does not have to be carried out by an authorised fitter – anyone with DIY skills can do so. Talk to your Morsø dealer if you require assistance with the installation. Morsø stoves can be connected to either brick or steel chimneys.

Brick chimney
If you want to connect your stove to a brick chimney, most Morsø stoves can use either a top flue or a rear flue. A flue pipe bushing is bricked securely into the wall, and the flue pipe is inserted into it. It is then sealed using ceramic sealing string. A top flue utilises the extra heat emitted by the flue gases in the chimney pipe.

Steel chimney
As mentioned, Morsø stoves can use either a top flue or a rear flue, but in most cases the steel chimney is routed upwards from the Morsø stove using a top flue. From the stove and up to 22.5 cm from a flammable ceiling, a non-insulated flue pipe can be used after which the rest of the chimney must be insulated up to the chimney top and fitted with a rain hood. Consult your Morsø dealer to discuss the steel chimney and its installation.