Combustion Air Supply; External Combustion Air Connection; Installing The Stove; Assembly Sequence - Olsberg Merapi 23/675 Anleitung

Combustion air supply

It must be guaranteed that there is enough combustion
air available for the stove. For the proper function of the
stove, a necessary combustion air volume current of
18,7 m³/h must be considered.

External combustion air connection

By an external operating mode, the combustion air
can be added from outside through a leak-proof line or
through a supply duct in the chimney. Thus, speak with
your district chimney sweep master.
Due to energy saving reasons, the combustion air in-
let should be able to be blocked if the stove is not being
operated. This can occur through a shut-off valve in the
combustion air line or through the air slide valves on
the stove. If a shut-off valve is used, this must be clear-
ly identified with CLOSED/OPEN.
Through the shutoff, it is avoided that heat is removed
from the set-up room through the constant circulation
of cold combustion air and cold combustion air lines
may lead to an increased formation of condensation.
Attention:
The combustion air line may not be closed during
operation!
In order to feed the combustion air to the stove exter-
nally via a pipe instead of from the room in which it is
installed, it is possible to screw a Ø 125 mm combus-
tion air pipe to the back of the stove. If the combus-
tion air pipe installed is longer than 3 m, calculations
will have to be carried out to verify an adequate sup-
ply of combustion air. At extremely low outdoor temper-
atures, condensation can occur on the combustion air
duct. For this reason it must be insulated with a suitable
insulating material. Observe the rules of the oven and
air heating construction craft.
Use the Olsberg combustion air pipes with sealing lip.
Attention:
Appliances with external combustion air connec-
tion are not suitable for concurrent operation with
ventilation systems, without a supplemental safe-
ty system.

Installing the stove

The floor on which the stove is installed must be even
and horizontal. The stove may only be installed on an
adequate load-bearing floor. The stove can be stood
on a metal floor sheet or glass sheet to protect the
flooring.
If the flooring or carpet is inflammable, a stable, heat
proof spark protection plate must be used. This must
extend 50 cm to the front and 30 cm to each side be-
yond the edge of the combustion chamber opening.
Under the stove no spark protection plate is required.

Assembly sequence

● The Ø 150 stovepipe connection can be installed at
the top or rear. The stove is supplied ready for con-
nection from above. If you wish to connect it at the
rear, the following steps must be carried out to make
the necessary modifications:
- Break out the cover in the back panel.
- Replace the connector sleeve and the sealing
cover.
● If intended, install the OEC (see chapter "OEC
installation").
● If no OEC is to be installed, carefully remove the
foam sheet between the lower front shield and the
bottom plate.
● Decide where the stove is to be installed. There
must be no objects made of combustible materials
within a distance of 80 cm of the stove's radiation
area, measured from the combustion chamber's in-
spection glass, nor may any be placed within this
area subsequently.
Minimum distance from combustible or load-
bearing walls (see schematic diagram):
35 cm
Stove installed straight in corner
20 cm
Stove installed diagonally in corner
35 cm
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