Morso 4000 Instructions For Installation And Use Manual page 15

5. Re-stoking should normally be carried out while embers
still remain. Distribute the embers in the bottom, ensuring
that most of them are at the front of the stove.
6. Place 2 pieces of wood of 0.5-0.7 kg each and approx. 25-
30 cm long over the embers in a single layer, with a distance
of approx. 1 cm.
7. Open the air supply to maximum and close the door; the
fresh wood will then ignite within a couple of minutes.
Important!
It is important that the fresh quantity of wood starts
to burn quickly. To ensure the fuel lights quickly, open
the combustion air to max. or leave the door ajar to
allow in the amount of air needed to light the wood.
If, however, the wood only smoulders, there will be a
strong build-up of smoke, which at worst can cause
an explosive ignition of the flue gases with the risk
of material damage and personal injury.
8. Reduce the amount of combustion air to the desired po-
sition, and optimal combustion will continue until there are
glowing embers in the bed.
Make sure that there is always enough air (oxygen) to
maintain clear, lasting flames when, and after, reducing
the amount of combustion air.
During the nominal test, the stoking interval was 60-70 minutes.
9. A new portion of wood can be added by repeating steps
5 & 6.
The stove door should normally be opened gently the first
2-3 cm, then you should wait until the pressure has equal-
ised before opening the door all the way. This technique
will prevent smoke from getting out, particularly when
there is a poor draugt.
Once the wood has burned out, it becomes glowing char-
coall. If a good layer of embers has already formed on top
of a sufficient layer of ash, the stove can keep warm for a
very long time.
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The stove door should never be opened when the stove is being fired vigorously.
Refuelling on to a low fire bed
If there is insufficient burning material in the firebed to light a new fuel charge, excessive
smoke emission can occur. Refuelling must be carried out onto a sufficient quantity of glow-
ing embers and ash that the new fuel charge will ignite in a reasonable period. If there are
too few embers in the fire bed, add suitable kindling to prevent excessive smoke :
Fuel overloading
The maximum amount of fuel specified in this manual should not be exceeded, overloading
can cause excess smoke.
Operation with door left open
Operation with the door open can cause excess smoke. The appliance must not be oper-
ated with the appliance door left open except as directed in the instructions.
We would strongly recommend that you do not leave your stove alit at night. It
harms the environment and constitutes very poor use of the wood as the gases
in the wood do not ignite at the low temperature, but settle as soot (unburned
gases) in the chimney and stove. Extreme conditions, such as poor draught in the
chimney, large quantities of wood or wet wood, may in the worst-case scenario
cause an explosive ignition.
When firing in the summer period, when there is minimal need for heat, the combustion
will be poor. The stove provides too much heat so the combustion should be reduced.
But always remember to make sure that there are lasting flames until the wood be-
comes charcoal. If you want a weaker fire, stoke up using less wood.
If you fire the stove using wet wood, a lot of the fuel's thermal energy will be spent
forcing the water out of the wood, without releasing any heat to the stove. This
incomplete combustion results in a layer of soot being left in the stove, pipe and
chimney.
Comparison between firing with wood and oil:
Type of wood (moisture content 20%)
Oak
Beech
Ash
Sycamore
Birch
Elm
Common spruce
Silver fir
No. of cubic metres per 1000 litre oil
7,0
7,0
7,2
7,5
8,0
8,9
10,4
10,9
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