Chimney Connection; Flue Pipe Connection - HASE SENDAI PRO 165 Mode D'emploi

CAUTION!
Simultaneous operation of the stove with
ventilation systems and/or exhaust hoods
can cause negative pressure to build up
in the room where the stove is installed,
which can lead to problems such as flue
gas escaping from the stove. If the stove
will be operated as a room air dependent
stove, the negative pressure in the room
where the stove is installed is not permitted
to exceed 4 Pascal.
When operated as a direct vent stove, the
negative pressure in the room where the
stove is installed is not permitted to exceed
8 Pascal (the ventilation system designer
specifies the air pressure in Pascal units).
We recommend setting the ventilation
system to a maximum negative pressure of
4 Pascal.
WARNING!
To avoid negative pressure in the room
where the stove is installed, we recommend
either using a window contact switch to
lock exhaust hoods that guide the air to the
outside or ensuring that a sufficient amount
of air can flow into the room where the
stove is located.

4. Chimney Connection

The chimney must be suitable for solid fuels and
adhere to the applicable regulations. The design
and height of the chimney must comply with the
minimum supply pressure for the fireplace. As a
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general rule, an effective chimney height of 4.5m, and
when connected to an LAS/LAF (exhaust chimney
for fireplaces) of 5.5m, is sufficient. The 'effective
chimney height' is the gap between the exhaust
gas inlet in the chimney and the upper edge of the
chimney cowl. In case of doubt, calculations should
be verified with reference to EN 13384-1/2.
The exhaust/flue gas system temperature class
(chimney and flue gas pipe) must be at least T400
soot fire-resistant. To determine whether your stove
can be connected to a chimney to which other
fireplaces are already connected, please consult the
technical data contained in the operating instructions
(Part I) and the section on "Connection of Multiple
Devices in Direct Vent Operation". The chimney cross
section should correspond to the flue pipe cross
section. If the effective chimney height is too low and/
or the chimney cross section is too large or too small,
the draught capability of your stove can be impaired.
The minimum output pressure (chimney draught) for
your stove model is specified in the technical data
contained in the model-specific operating instructions
(Part I). At output pressures higher than specified, the
stove emissions increase, which puts a high load on
the stove and can lead to damage.
The stove has a maximum permissible output
pressure of 20 Pascal. To limit the output pressure,
a butterfly valve (a) (fig. 2) or output pressure limiter
can be used (only possible with room air dependent
operation).
If a soot fire occurs in the chimney, the flue gas path
has to be checked for leaks and to ensure that it is
tightly sealed. If these requirements and values
cannot be complied with or if there are any doubts or
questions concerning the suitability of the chimney,
we recommend conducting a chimney calculation
according to EN 13384-1/2.

5. Flue Pipe Connection

The stove has to be connected to the chimney
with a flue pipe with an inside diameter of 15 cm.
Please ensure that all pipe pieces are tightly fit at
the connection junctions. The boiler tube fitting must
conform to DIN EN 1856-2. We recommend using
elbow pipes with cleaning hatches.
For adjustable stoves, the individual smoke pipe
elements can be joined together firmly, for example
by using screws, so that these don't move with the
stove as it turns.
CAUTION!
The flue pipe must be well sealed at the
chimney entrance and cannot project into
the inner cavity of the chimney; otherwise
the flue gas venting will be impaired
(fig. 1).

fig. 1