hergom Aranda Instructions Pour L'installation, L'utilisation Et L'entretien page 59

f) It is very important for the tube joints to be well sealed to cover possible
cracks that allow air to enter..
To check the chimney is airtight, proceed as follows:
- Block the hole on the roof.
- Introduce damp paper and straw into the chimney and light it.
- Check for possible cracks where the smoke escapes and seal them.
g) It is very important for the chimney to stand out by more than one metre from
the highest part of the house. If the draught is to be increased, increase the height of the
chimney.
Fig.-13
Fig.-14
Fig.-15
59