7
class A 1 according to DIN 4102 Part 1, with an upper
application temperature of at least 700° C (testing
according to DIN EN 14303). An insulation code
(according to AGI-Q 132) is required, which
must not contain the digit sequence "99" at any
point! The nominal raw density of the insulating
material must not be below 80 kg/m³.
4.4 Building safety and stability
The fireplace may only be placed on floors or storey
ceilings with a sufficient load-bearing capacity. In
ceilings without sufficient lateral distribution, e.g.
wood beam ceilings, loads may only be introduced if a
corresponding load distribution takes place.
4.5 Determining nominal heat output
The required heating load must be calculated accord-
ing to DIN EN 12831. The nominal heat output of the
masonry stoves must be in a reasonable ratio to the
heating load. The correct size of the masonry stove is
very important for proper functioning and economical
operation!
4.6 Chimney design
The correct function of the fireplace mainly depends on
the effective chimney height and the cross-section of
the chimney.
Eff
ectiv
e chimne
y heigh
t
Cross-section
Fig.: 1 Example: Effective chimney height
The minimum area of the chimney cross-section may
not be less than 100 cm².
The chimney must dissipate the flue gases with
sufficient reliability and must build up the necessary
feed pressure. Verification of the sufficient function of
the chimney must be calculated according to DIN EN
13384. Use one of the usual calculation programs for
the calculation.
For the masonry stoves, a vacuum of approx. 8 Pa
(measured on the flue gas connector) is considered to
be the feed pressure.
i
The working pressure of the chimney must be
equal to or greater than the necessary total feed
pressure for all system parts.
The chimney must be designed for flue gas from solid
fuels (temperature resistance of at least T400, sootfire
resistance, marking G, corrosion resistance class 3). All
openings leading into the chimney (including cleaning
doors and condensate drains) must close tightly!
The chimney connection and the chimney must be
executed in accordance with the standard DIN V 18160
Part 1 and the 1st BlmSchV. The chimney must be tested
in accordance with the local regulations (DIN V 18160
Part 1) – consult the responsible regional chimney
sweep.
5. Fire and heat protection
All regulations of the district building code, the
firing ordinance and the administrative regulations
applicable at the installation site must be complied
with. National and local regulations must be met.
Germany
The fire and heat protection for mounting surfaces
made out of or with combustible materials
(components to be protected), and for mounting
surfaces without combustible materials and
without built-in furniture on the back (components
not to be protected) must be designed according
to the point "6 Fire and heat protection" of the
German Stove and Air Heating Constructors
Association (Fachregel des Ofen- und Luftheizungs-
bauerhandwerks) TR OL 2006, Edition 2017-01.
