12 | Operation EN Operating manual Ruby
42
Fig.44: Combustion air supply connection
On some appliance models, connection via the floor is also
possible.
A pipe or hose of Ø125mm must be used for connecting
the external combustion air supply. The length of the pipe
or hose should be no longer than 5 m. This supply line must
have no more than three bends.
Provision must be made for adequate provision of combus-
tion air and air for ventilation. The air grille for providing
combustion air must not be accidentally disabled while the
heating appliance is operating.
Lack of combustion air causes poor combustion, and in-
creased soot formation and volume of ash.
12.4.2 Function - filling level indicator
The filling level indicator keeps you informed of the filling
level of your pellet hopper. If the filling level falls below a
certain level, a warning is shown on the display. Each time
that the hopper is filled, the filling level must be manually
updated.
Completely emptying the hopper should be avoided, since
the flame will otherwise go out unintentionally and you will
have to manually fill the screw conveyor before the next pel-
let start.
The filling level indicator is calculated on the basis of the
size of your stove’s pellet hopper and the particular operat-
ing time. Correct functioning can only be guaranteed when
the hopper is always completely filled and the display is set
at the same time to “FULL”.
Press the filling level symbol in the room temperature dis-
play to set the display to “FULL”.
This function can be disabled in the “Menu item: Fuel” set-
ting.
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