Nordpeis N-21F Exclusive Manuel D'installation page 15

Storing of Wood
In order to ensure that the wood is dry, the tree should
be cut in winter and then stored during the summer,
under roof and in a location with adequate ventilation.
The wood pile must never be covered by a tarpaulin
which is lying against the ground as the tarpaulin will
then act as a sealed lid that will prevent the wood from
drying. Always keep a small amount of wood indoors
for a few days before use so that moisture in the
surface of the wood can evaporate.
Firing
Not enough air to the combustion may cause the glass
to soot. Hence, supply the fire with air just after the
wood is added, so that the flames and gases in the
combustion chamber are properly burnt off. Open the
air vent and have the door slightly ajar in order for the
flames to establish properly on the wood.
Note that the air supply for the combustion also can
be too large and cause an uncontrollable fire that
very quickly heat up the whole hearth to an extremely
high temperature (when firing with a closed or nearly
closed door). For this reason you should never fill the
combustion chamber completely with wood.
It is recommended to keep an even fire with a small
amount of wood. Too many logs put on hot ember,
may result in combustion air starvation, and the gases
will be released unburnt. For this reason it is important
to increase the air supply just after adding the logs.
Warning!
The Firebox shall to be always closed except
during ignition, refueling and ash removal.
Choice of Fuel
All types of wood, such as birch, beech, oak, elm,
ash and fruit trees, can be used as fuel in the insert.
Wood species have different degrees of hardness -
the higher the hardness of the wood, the higher the
energy value. Beech, oak and birch havest the highest
degree of hardness.
Attention! We do not recommend using fuel
briquettes/ compact wood in our products. Use of
such fuel may cause the product to overheat and
exceed the temperatures determined safe.
Burning briquettes/ compact wood is at your own
risk and only small amounts (max 1/3 of normal
load) should be used for each load.
NEVER use impregnated wood, painted wood,
plywood, chipboard, rubbish, milk cartons,
printed material or similar. If any of these items
are used as fuel the warranty is invalid.
Common to these materials is that they
during combustion can form hydrochloric
acid and heavy metals that are harmful to the
environment, you and the insert. Hydrochloric
acid can also corrode the steel in the chimney
or masonry in a masonry chimney. Also, avoid
firing with bark, sawdust or other extremely fine
wood, apart from when lighting a fire. This form
of fuel can easily cause a flashover that can
lead to temperatures that are too high.
Warning: Make sure the insert is not overheated
- it can cause irreparable damage to the product.
Such damage is not covered by the warranty.
Source: "Håndbok, effektiv og miljøvennlig vedfyring" by Edvard
Karlsvik SINTEF Energy Research AS and Heikki Oravainen, VTT.
GB
Warning:
15