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Simultaneously operating stoves with ventilation systems and/or
extractor hoods can cause negative pressure in the room the stove is
installed in and cause problems such as flue gas escaping the stove.
The negative pressure in the installation room must not
exceed 4 Pa with indirect vent operation.
5.7
Combustion air connection
The firebox is solely supplied with combustion air via an on-site air in-
let pipe and the pipe connections of the HASE air system.
The HASE air system can be connected at the bottom or at the back.
The sealed pipe connections connect directly to the outside or a
suitable air/flue gas system (LAS).
The supply air can also be drawn from a room directly vented with outside air
(e.g. cellar).
INFO: AIR SUPPLY DUCTS
The on-site air supply duct must be sufficiently tight and meet the requirements of DIN
EN 12237 and DIN EN 13180, Tightness class C-D:
► The air supply duct has a minimum diameter of 100 mm
and max. two 90° elbows.
► The max. total length is 4.5 m.
► Longer lengths and more than two elbows requires
computational proof.
► The combustion air requirement must be met
(see chapter "12.2 Technical data").
► A suitable service access must be installed to inspect and clean
the air supply duct.
► The entire air supply duct must be airtight and insulated
against condensation using water-repellent insulation.
► Please consult your authorised dealer.
► The air inlet cross section at the air inlet must correspond
with the pipe cross section.
► When installing a small animal grate, the mesh size must be
at least 10 mm.
INFO: COMBUSTION AIR DUCT
If there is a shut-off device in the combustion air duct
(not permitted in some countries), this must be opened before commissioning.
If there is an air grille at the inlet opening of the combustion air duct
this must be cleaned regularly.
5.8
Chimney connection
NOTE: SUPPLY PRESSURE (CHIMNEY AIRFLOW)
The supply pressure level greatly influences the combustion behaviour of the fireplace
stove.
Supply pressures higher than specified increase the emissions of the fireplace stove.
This puts a heavy load on the fireplace stove and can damage your stove:
► Observe the max. supply pressure of 25 Pa.
5.9
Combustion air
The combustion air is regulated by the iQ controller.
NOTE: REAR WALL AIR OPENINGS
The rear wall air openings ensure the stove has the required amount of oxygen:
► Never seal the rear wall air openings.
The grate air is primarily supplied during the light-
ing stage, it accelerates over-igniting the fuel.
The window air purge is the primary oxygen supply for the flame and
ember area and reduces soot built-up on the firebox glass.
The rear wall air supplies the flame area in the upper area
of the firebox if combustion air is lacking here.
5.10 Installing the air system and cladding
INFO: INSTALLATION
How to install the cladding (soapstone/ceramic) and the air system is described in the
model-specific installation instructions:
► Observe the installation instructions.
► Consult a professional for installation.
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