Operation; Combustion - Carbel A-70-2 Manual De Montaje, Uso Y Mantenimiento

3. OPERATION

3.1 Fans
The fans at the bottom of the fireplace are operated by a three position switch (I, 0, II ).
You can vary the fan speed at any time. At a slower speed (I), operation will be quieter, and the room will be
heated gradually. When operating with a strong fire, it is advisable to adjust the fans to a faster speed (II) to
cool the wood burner and heat the room faster.
In switch position (O), the fans will be turned off, but a safety thermostat will be able to activate them at any
time if the temperature at the lower part of the stove reaches 50ºC in order to protect the electric
components.
NOTE. To avoid overheating, the wood burner must be connected to the mains if there is a fire or embers in
it.

3.2 Combustion

For good combustion that is clean and environment-friendly (CO-free), when the wood is well lit, and it has
reached a high temperature, you must close the primary air inlet and keep the secondary air inlet open. This
will let the air for combustion (preheated) enter through the top of the fireplace next to the glass and through
the back wall below the deflector to ensure better gas combustion. You will notice this in an increase in
flames and temperature.
Wood burners and inserts are intermittent combustion appliances. This means that they should be lit, loaded
with an approximate weight of fuel as recommended by the manufacturer for each model, followed by a full
combustion cycle and fuel reloads after each combustion cycle.
Good combustion is necessary for optimum performance and a better view of the flames through the glass.
Guidelines:
- Maintain a high and constant temperature in the fireplace. Accordingly, the fireplace door must be closed at
all times and opened only to load firewood, which must be done as quickly as possible. Keeping the door open
will cause the stove to cool down, it will worsen the combustion and make lighting of the new wood more
difficult.
- Do not take a long time when loading firewood and wait for the end of the combustion cycle, when the
flames of the previous load disappear.
A full combustion cycle comprises the following:
1. A short period after reloading when the wood begins to heat up without flames. The time until
the flame lights is an indication of the fireplace temperature. If you wait too long to reload
firewood, the temperature falls too low and the new load of firewood does not light well. This
has a negative effect on combustion and dirties the glass.
2. The temperature of the firewood increases rapidly, and it begins to break up, emitting gas that
ignites if the fireplace temperature is appropriate. The fireplace temperature begins to increase
as the fuel emits more gas and the flames increase.
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