1.3 Connections
The flue gas nozzle of the
B
4
S
can optionally be mounted
either at the top or rear of the stove body. The unused flue
gas conduit has to be closed with the provided cover.
1.3.1 Connection to a chimney
The connection to the chimney is to be carried out with appro-
priate connection material which can be obtained as an acces-
sory. Please use the support of your Bullerjan-authorized
dealer or your
chimney sweep when connecting your wood
stove. The diameter of the connection nozzle is 150 mm.
The connecting piece between the stove and exhaust system
should be as short as possible, straight and laid ascendingly.
At least one cleaning opening should be available for the
purpose of cleaning the connecting pipes.
The combustion chamber, all air supply channels in the
combustion chamber as well as the connecting pieces to
the chimney must be cleaned in the event of soiling, but at
least once during and after the heating season. For this
work we recommend the use of a commercially available
ash vacuum cleaner.
1.3.2
Required characteristics of the chimney
The Bullerjan
B
4
S
stoves require their own chimney.
Whether the multiple use of a chimney in your personal ho
us-
ing situation is reasonable and possible, has to be clarified
with your master chimney sweep. In the case of the concurrent
operation of several fireplaces, account has to be taken of the
special ventilation requirements, among others; an adequate
fresh air supply has to be ensured.
The Bullerjan
B
4
S
is equipped with an automatically closing
combustion chamber door and can, with an appropriate
certificate, be operated with external air supply only (EAS). The
fire technical calculation is to be made pursuant to EN 13384
using the value triple given in the table below.
Draught of the chimney
Insufficient draught of the chimney:
Regardless of the
results, which a chimney calculation program calculates after
entering the presented values, it has to be verified that the
chimney in the cold state has a basic draught/under pressure of
at least 5 Pa. In the case of insufficient basic draught, flue gas
can be discharged into the installation room, during the ignition
phase.
Excessive draught of the chimney:
The maximum draught
(negative pressure) that the chimney exhibits during the heat -
ing operation, must not exceed 16 Pa. If the draught is too high,
the wood burns much too quickly and too hot, and the stove
can not unfold its heating and environmental qualities. In
addition, a significantly too high chimney draught can lead to
damages of the wood stove. In extreme cases ash could be
sucked into the catalyst and clog it. This could lead to a
malfunction of the wood stove and a possibly leak of flue gas in
the installation room.
Insofar as your chimney develops excessive draught, an easy
to install, mechanical draught regulator for the chimney can
already provide an efficient remedy for excess draught.
Please
consult your chimney sweep.
The Bullerjan GmbH can only warrant the operational reliability
and the stated thermal performance of the
B
4
S
, insofar as
sufficient fire technical dimensioning of the chimney is
c
onfirmed by calculation according to EN 13384.
Value triple for the calculation of the
chimneys pursuant to EN 13384
Tested nominal
heat output (NHO)
Exhaust gas mass
flow rate at
NHO
Mean exhaust gas
temperature
Delivery pressure
Mean Co-content
(13 % O
2
)
Mean Co-content
(13 % O
2
)
Dust
(13 % O
2
)
Mean NO
x
-content
(bez. 13 % O
2
)
Mean OGC-content
Efficiency
18
%
5
,0
g/s
4,4
°C
231
Pa
12
mg/m
3
1067,3
%
0,0
85
mg/m
3
2
9
mg/m
3
1
26,3
mg/m
3
%
31,1
8
6
Unit
Bullerjan B
4
S
Cleaning of the chimney:
The chimney must be regularly
cleaned, by the master chimney sweep. This is normally
done once a year.
1.3.3 Connection to an external combustion air supply
The Bullerjan stoves
B
4
S
have a connecting nozzle for the
supply of combustion air from outside of the installation room.
It’s use can be mandatory in climate controlled buildings with a
controlled loading and venting system.
The nozzle is situated
on the rear wall of the stoves.
Stoves that have to be operated by using external air supply
only must undergo a special test in accordance with the re-
quirements of the German Institute for Building Technology
(DIBT). Bullerjan stoves that exhibit this feature are shipped
with a corresponding certificate and are marked at the back
with the "Ü"-sign (tested for EAS/RLU – External Air Supply).
