TermaTech TT20 User And Mounting Manual page 5

Distance to flammable material:
The stove must be put on a non inflammable foundation. This foundation must
as a minimum cover 150 mm on each side of the stove and 300 mm in front of
the stove.
For inflammable material like inflammable walls made of wood, furniture, etc.
the following minimum distances apply for safety reasons:
150 mm behind the stove to flammable material.
350 mm beside the stove to flammable material.
125 mm behind/beside if mounted 45° in a corner
1000 mm in front of the stove to flammable material.
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Distance to non-flammable materials:
It is recommended that there is a minimum of 80-100 mm behind and beside
the stove so the stove can dispose of the heat, this distance makes cleaning of
and around the stove easier. In addition, refer to the relevant Building
Regulations.
Requirements for the chimney:
The chimney must be of sufficient height so the draught conditions are okay
the smoke does not bother anyone. Good draught in the chimney is crucial to
the stove working as intended and burns as environmentally friendly as
possible. The height of the chimney must typically be a minimum of 3.5 m
from the top of the stove to the top of the chimney.
The chimney must have a minimum internal diameter of Ø150mm.
The chimney must be equipped with an easily accessible cleaning hatch. All
joints and connections must be tight and the chimney must be able to provide
a draught of at least 1.2 mm water gauge (12Pa).
It is possible to connect the wood-burning stove to chimneys that are also
used for other purposes. However, the concrete conditions must be assessed
by the fitter and/or chimney sweep.
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