GB 11
This will soon cause a sufficiently high firebox temperature to be reached,
in order to allow full and environmentally-friendly combustion. Depending on
the type of wood, the quantity of wood, the embers and the chimney draught,
this reheating phase takes about 5 minutes until the combustion air can be
restricted (as described in Point 7).
• Once the fire has started, shift the air supply lever as far to the right
(maximum air flow) as necessary . The fire must be provided with suffi-
cient combustion air to stabilize the draught, but not so much that the
wood burns away too quickly.
• In the final phase of the burning, push the control lever to the left (but
not completely). There is the risk of the chimney flue collapsing and a
smoldering fire resulting in the fireplace insert.
• To avoid resistance in the ember bed, the ash should frequently be raked
carefully so that the ash grate does not become clogged and the supply
air can continue to flow unhindered.
5.2 COMBUSTION AIR - CONVECTION - FRESH AIR
• The arrangements of the combustion air supply must not be altered and
have to be open.
• In order to prevent heat accumulation in the unit, the existing air outlet
grille or holes has/have to be free and (in the case of a fire) open.
• In the radiation area of the open fireplace, no objects made of flammable
materials may be located within a distance of 80 cm, measured from the
front edge of the firebox opening.
• Objects made of flammable materials must not be placed on exposed
surfaces of the fireplace.
• Do not use any vacuum-generating devices on the same storey/in the
same air space of the building (e.g. kitchen exhaust hood). There is a
risk of smoke entering the living space.
• Outside the radiation area, no flammable objects or materials can be
placed or installed on the mantel within a distance of 5 cm if a surface
temperature of > 85 °C has been or can be achieved.
• Please note that an operating fireplace reaches a very high heat. Tem-
peratures of more than 300 °C may occur on the glass pane. Always use
the supplied heat-resistant glove.
• Fireplaces may be operated in Germany only in accordance with 1.
BImSchV.
If you do not want to continue adding wood, the
control lever can be closed as soon as only a few
embers are remaining.
End of the combustion process
5. TECHNICAL INFORMATION
5.1 HEATING DURING TRANSITIONAL PERIODS
The basic requirement for correct fireplace system function is the draught
produced by your chimney (pressure head). This is dependent on the outside
temperature and therefore, to a large extent, on the season. Higher ambient
temperatures during the shoulder seasons (spring and autumn) can lead
to weaker draughts and consequently, poorer combustion or more copious
smoke production.
What can you do to help?
• Before starting a fire, empty the ash pot and the ash grate. Insert the ash
grate with the printed Spartherm logo facing downwards.
• If the chimney draught is weak, begin by making up a ‚pilot fire‘ with
plenty of kindling, in order to quickly increase the fireplace temperature
and create a stable draught.