Lighting Instructions Lighting In The Right Way - Contura C i5 Installation Instructions Manual

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108 lIGHTING INSTRUCTIONS
Lighting in the right way
Contura i5 is intended to produce secondary heating for the accommoda-
tion. It is important that the correct amount of wood is used, especially
when lighting. If you are lighting the fire for the first time you should use
a set of scales to see how much 1.5 kg kindling is. Also check what the
normal and maximum weights look like.
The cassette may only be lit with the hatch closed. Always open the hatch
carefully and slowly to prevent blow back because of the changing pressure
in the stove.
The function of the cassette differs depending on the draft conditions in
the chimney. Achieving the correct setting for the combustion air damper
usually takes a few attempts.
Correctly sized wood
Note that if too little kindling is used when lighting, or if the wood is too
thickly cut, the fire box will not reach the correct operating temperature.
Incorrect lighting can lead to poor combustion with heavy sooting and may
result in the fire going out when the hatch is shut.
Lighting logs: Finely chopped wood
Length: 25-33 cm
Diameter: 3-4 cm
Weight per lighting: 1.5 kg (approx. 12-15 finely chopped pieces)
Feeding Wood: Split logs
Length: 25–33 cm
Diameter: 6–7 cm
Normal weight: 1.5 kg/hour (1-2 pieces per insertion)
Max amount: 3 kg/hour (1-2 pieces per insertion)
Important!
It is important that the wood catches fire quickly.
Quick lighting is achieved by opening the combus-
tion air damper fully or by leaving the hatch ajar for
a moment. Pyre lighting gives poor combustion and
produces a lot of smoke and can cause quick gas
ignition in the worst instance resulting in hearth
damage.
Lighting instructions
Lighting
If the house has mechanical ventilation, open a window near to the fire-
place prior to lighting. Leave the window open for a few minutes until the
fire has caught properly.
1. Open the combustion air damper completely.
2. Insert paper or firelighters and about 1.5 kg of thinly chopped kindling
into the firebox. Stack the wood crosswise.
3. Light the fire.
4. Set the hatch to the lighting position, that is the lock catch's first lock
position against the lock roller to create a sufficient air gap between
the hatch and the cassette.
5. When the fire has caught fully after approx 10-15 minutes, close the
hatch completely.
6. A fresh load of logs should not be put on until the start-up fire has
become a glowing bed of embers.
Combustion air damper
Förbränningsluftsspjäll
Stängd
Closed
Adding wood
1. Open the hatch a few centimetres and allow the vacuum in the firebox
to equalise for a few seconds before opening the hatch fully.
2. Add two logs with a combined weight of approx 1-1.5 kg. Place one log
diagonally and one parallel to the back plate. Then close the hatch. The
combustion damper must be completely open for 5 minutes until the
logs turn black and are burning thoroughly.
3. If slower combustion is then required, the supply of combustion air can
be reduced. The nominal output of 5 kW is obtained when the combus-
tion air damper is 50 % open and two logs are lit. In this operating
position it is important that the air intake damper is fully open for the
first 5 minutes so that the wood has time to burn properly before the
supply of combustion air is reduced. A condition for regulating the
output is a thick bed of embers and high temperature in the firebox.
When the fire has died down to embers more wood should be added.
The conditions for controlling combustion vary depending on the tem-
perature in the combustion chamber and the draft in the chimney.
Max. öppen
Max. open