iii) Damper flue section
This is a short flue section containing
a damper. The damper can be used to
regulate the draw through the flue pipe,
improving the efficiency of the unit. This
part is especially functional on flue
lengths of more than 4.6m
iv) Wall penetration kit
If an installation through a ceiling is
not possible, then this kit can be used
to route the flue pipe horizontally
through a wall, and back to the vertical
position on the outside of the wall