2.0 Firing/using the stove
The heat emission of the stove is regulated with the control lever above the door.
The stove uses three types of combustion air.
The primary combustion air is supplied up through the grate. The air is only used at start-up if
the operating conditions are poor (e.g. poor draft). Minimum setting for the control lever is
in middle position and maximum position is to the left.
The secondary combustion air is supplied down the glass. This air is also regulated with the
lever above the door. Minimum setting for the regulation lever is in middle position and maxi-
mum position is to the right.
The tertiary combustion air enters the fire box above the fuel bed. This air supply can not be
regulated.
The nominal heat output of the stove is 4.0 kW.
Your new Morsø stove is EN tested and recommended for burning wood.
NB!
Wood is a material that contains a great deal of gas (approx. 75%). The gases are released
when the wood is lit and heated. For this reason, it is important that these gases are ignited
quickly after stoking. If the wood just lies smouldering, especially after re-stoking, a lot of
smoke is created which, in the worst case, may cause an explosive ignition of the gases, re-
sulting in damage to the stove.
In order to ignite the gases that are released from the wood, and to keep clear, lasting flames
during the combustion process, it is important to let in the required quantity of oxygen (air
supply) at all times. The setting of the air supply, the method of ignition and the lighting in-
tervals depend on the draught in the chimney, the wind and weather, the amount of heat re-
quired, the fuel, etc. This means that it may take some time before you get to know the cor-
rect functioning of the stove under any given circumstances.
Although you can fire your Morsø stove with almost all kinds of wood, you should not fire with
wet wood, or unseasoned wood. Wood ought to be stored under a roof for at least 1 year, and
preferably 2 years, with free access to wind. Wood should be chopped as soon as possible af-
ter felling if it is to dry quickly. The wood can be used once the moisture is less than 20%. Du-
ring the EN test, all stoves are tested with wood with a moisture content of (16 ± 4)%.
Never use driftwood as it usually has a high salt content, which damages both the stove and
the chimney. Impregnated and painted wood and chipboard emit poisonous smoke and fumes
so they should not be used as fuel either
Please note that liquid fuel may not be used in the stove.
Pieces of wood with a diameter exceeding 10 cm should always be chopped.
The pieces of wood should be short enough to be able to lie flat over the layers of embers,
with air at both ends. The maximum length of fuel in the stove is 25 cm. The maximum quanti-
ty of fuel is approx. 1 kg/hour.
The first few times you light the stove, the fire should be moderate so that the heat-resistant
paint can harden before firing more vigorously. During the hardening phase, the paint may
develop obnoxious smoke and smell the first time it is lit, which is very normal. Make sure
that the room is well ventilated during this period.
1. A layer of embers will form if the stove is lit with 1,5-2,0 kg
of wood along with a couple of firestarters. Follow this me-
thod: Place two logs (each weighing 0.25-0.5 kg) on the bot-
tom grate. Next, place approximately 0,5 kg dry kindling on
top of the logs. Just beneath the top of the kindling place
the firestarters. Ignite the firestarters.
2. Open up completely for the secondary air supply by means
of the regulation lever. (pull to the right)
3. After the firestarters have caught fire, leave the fire door
ajar about 1 cm so that the chimney draws well.
4. When you can see that the chimney is hot enough to draw
(after 5-10 minutes), close the door. If all the necessary
conditions are met, a thick layer of embers will have been
formed in the combustion chamber after another 40 mi-
nutes.
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 1 log weighing approximately 0.5-0,9 kg and 20-25 cm
long, over the embers. The best combustion is obtained if
the longitudinal dimension of the logs is parallel with the
rear wall of the stove.
7. When the secondary air supply is opened to maximum and
the door is closed, the new quantity of wood will ignite in
a few minutes.
2.1 Lighting instructions and fuelling intervals
A lot of air is needed when lighting the stove. If you are starting with a cold stove, the door
should be left ajar for the first few minutes. In order to build up an insulating layer of ash in
the bottom of the stove, you should burn 1,5-2,0 kg of dry kindling when you light the stove the
first time.
Always keep approx. 1 cm ash in the bottom of the combustion chamber.
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 cau-
se an explosive ignition of the flue gases with the
risk of material damage and personal injury.