I
NSTALLATION
&
U
SERS
M
ANUAL
FIREPLACE
| NEAT 70/80/90
18 |
Page
2.
Place 2-3 logs with overall weight of 1-3 kg and 30-60cm, depending on the size of the fireplace.
3.
Place 2-3 kindling tablets or 5-8 wrapped newspaper sheets between the logs.
4.
Add a few twigs (1-2 kg) on the top in zigzag arrangement.
5.
Finally, place a medium log on top of the stack and light the tablets/wrapped sheets.
6.
Once you ensure the flue is warm enough (after 5-10 minutes), close the door.
7.
Lower the combustion air regulator
(Table 8.2.1, line 3)
between positions 1 to 4, so that the combustion continues seamleassly and ensure
there is adequate air supply (oxygen) to maintain the flame clear and powerful when you reduce the amount of combustion air and after.
8.
As soon as the fire leaves a thick layer of cinder, you can add more firewood, every 45-55 minutes according to the type of the device.
Feed the fireplace often but with small amounts of firewood, at most 1-3 kg, depending on the size of the fireplace, each time. If the fireplace
is overly full, the generated heat may cause excessive strain on the flue. The supply of firewood should be done in moderation.
Wood combustion rules
If you want less heat, put a smaller quantity of wood in the fireplace and reduce the amount of air. It is however important to maintain
an adequate layer of cinder.
Less heat = Less wood = Less air.
More heat = More wood = More air.
When the fireplace operates at excessively low power or if the wood is not sufficiently dry, soot might deposit on the glass.
10.
P
RIMARY AND
S
ECONDARY
C
OMBUSTION
The combustion of wood requires a process of primary and secondary combustion to be efficient.
1.
Primary combustion
Primary combustion is the initial wood burning at relatively low temperatures. During the primary combustion, large amounts of soot, creosote
and gas are produced due to the existence of water in the wood. Creosote, in primary combustion, contains 60% of the potential energy of
wood, but it is deposited in the form of soot inside the fireplace and the flue without imparting any heating.
2.
Secondary combustion
The combustion chamber is insulated so as to increase the temperature of the core and by
providing just the right amount of oxygen necessary to 600
O
C, the creosote ignites spontaneously.
This creates a chain reaction that increases the temperature inside the fireplace from 600
O
C to
about 870
O
C without having to add any more fuel. This is the secondary combustion.
Thereby, the more proper secondary combustion is achieved the higher temperatures are
produced and the less residue is left (gas and particles). The vast majority of secondary combustion
is only done in the upper part of the chamber near the outlet of the flue. Thus a large part of the
heat that is achieved, is discharged directly through the draft of the flue to the exterior and not in
the heating area.
ARTE’s® chamber manages to provide the maximum secondary combustion performance. The
The openings of the secondary air supply
should not be covered by firewood.
The fire should be vigorous and the smoke exiting
from the flue must be almost unnoticeable.
The fire should not be smoldering because it is causing more pollution.
If the door remains slightly open, fire gases and flames may
escape from the opening of the fireplace causing a risk of fire
or asphyxiation. We recommend installing a smoke detector in
the room where the fireplace is located.
DO NOT OVERHEAT THE FIREPLACE! There is risk of fire or permanent damage.
If any part of the fireplace starts glowing, then the device is overheating.
Pic.10.1
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