17
Connection to a brick chimney
Brick a thimble into the chimney and seat the
flue gas pipe in this.
The thimble and flue gas pipe must not penetra-
te the chimney opening itself, but must be flush
with the inside of the chimney duct. Joins bet-
ween brickwork, the thimble and flue gas pipe
m
ust be sealed with fireproof material and / or
beading
. Heta A/S stresses that it is of utmost
im
portance that this is done correctly with very
tight joints
. As mentioned earlier, we recommend
that setup and installation be left to a profes-
sional Heta dealer.
Connection to a steel chimney
When fitting a connection from a top outlet stove
directly to a steel chimney, we recommend fit-
ting the chimney tube inside the flue gas spigot
so that any soot and condensation drops into
the stove itself rather than collecting on the ex-
terior surface of the stove.
For connections to chimneys that are run
through ceilings, all national and local regula-
tions regarding distance to flammable material
must be followed. It is important that the chim-
ney is fitted with roof support so that the top
panel of the stove is not required to bear the
entire weight of the chimney (excessive weight
may damage the stove).
2.4
Combustion air and Ventilation
The insert stove is approved as a room air depen-
dent insert stove in accordance with EN 13229.
All the combustion air in the inset stove comes
from the room in which it is fitted. However, by
connecting a sealed air inlet to the insert stove’s
air intake connector, the stove can be supplied
with external combustion air. In this respect, the
following requirements must be met:
• Only approved materials may be used from
the ventilation unit to the air inlet vent.
• The air inlet vent must be fitted correctly and
insulated to prevent formation of condensate.
The cross section of the vent and grille must
be at least 78 cm².
• If the vent leads out into the open air, please
note that the grille must be fitted with suitable
wind protection. There must be no risk that
the grille can get clogged by leaves, etc.
300
671
180
150
083
160
150
3
6
6
7
11
Ventilation
Adequate ventilation must be provided in ac-
cordance with building regulations (Doc J Oct
2010) especially when installing in newer build
properties when the stove is not going to be in-
stalled to an outside air supply.
The Inspire 40 has a nominal output of less than
5kW and does not need additional ventilation in
older properties where it will be ventilated
by natural leakage.
Houses built after 2008 where the air leakage
rate is less than than 5 m
3
/ hour / m
2
then a ven-
tilator equivalent to 550 mm
2
per kW output will
be required (4.5 kW x 550 mm = 2475 mm
2
) un-
less the stove is connected to an outside fresh
air supply.
2.5 Clearances for installation
EN 13 229
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