TermaTech TT20 User And Mounting Manual page 14

A single wall metal fluepipe is suitable for connecting the stove to the chimney but is not
suitable for use as the complete chimney. The chimney and connecting fluepipe must have
a minimum diameter of 150 mm and its dimension should be not less than the size of the
outlet socket of the stove.
Any bend in the chimney or connecting fluepipe should not exceed 45. 90 bends should
not be used.
Combustible material should not be located where the heat dissipating through the walls of
fireplaces or flues could ignite it. Therefore when installing the stove in the presence of
combustible materials due account must be taken of the guidance on the separation of
combustible material given in Building Regulations Approved Document J and also in
these stove instructions.
If it is found that there is excessive draught in the chimney then a draught stabiliser should
be fitted. Fitting of a draught stabiliser will affect the requirement for the permanent air
supply into the room in which the stove is fitted in accordance with Approved Document J
(see also combustion air supply).
Adequate provision e.g. easily accessible soot door or doors must be provided for
sweeping the chimney and connecting fluepipe where it is not intended for the chimney to
be swept through the appliance.
Hearth
The hearth should be able to accommodate the weight of the stove and its chimney if the
chimney is not independently supported. The weight of the stove is indicated in the
brochure.
The stove should preferably be installed on a non-combustible hearth of a size and
construction that is in accordance with the provisions of the current Building Regulations
Approved Document J.
The clearance distances to combustible material beneath, surrounding or upon the hearth
and walls adjacent to the hearth should comply with the guidance on the separation of
combustible material given in Building Regulations Approved Document J and also in
these stove instructions.
If the stove is to be installed on a combustible floor surface, it must be covered with a non-
combustible material at least 12mm thick, in accordance with Building Regulations
Approved Document J, to a distance of 30 cm in front of the stove and 15 cm to each side
measuring from the door of the combustion chamber.
Combustion air supply
In order for the stove to perform efficiently and safely there must be an adequate air supply
into the room in which the stove is installed to provide combustion air. The provision of air
supply to the stove must be in accordance with current Building Regulations Approved
Document J. An opening window is not appropriate for this purpose.
Connection to chimney
Stoves may have a choice of either a rear or top flue gas connector that allows connection
to either a masonry chimney or a prefabricated factory made insulated metal chimney in
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