ARTE NIREAS, Инструкция по установке и эксплуатации

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Ε
ΓΧΕΙΡΙ∆ΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ
&
ΧΡΗΣΗΣ
WATER HEATING FIREPLACE
| NIREAS
21 |
Σελίδα
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.
9. T
ERTIARY
C
OMBUSTION
The three combustion points
The combustion of wood requires a process of primary, secondary, and tertiary 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® NIREAS’ chamber manages to provide the maximum secondary combustion performance. An
automatic air intake regulating system that inserts air from below in cooperation with the intake of
secondary air from the back of the combustion chamber results in the fire receiving the right amount
of preheated oxygen throughout the combustion chamber which together with the upper and lower
air curtain of the ceramic glass result in every place of the combustion chamber to receive the proper
amount of air
(Pic. 9.1.1) . This way the whole area of the chamber is converted in a secondary
combustion chamber, not only the upper part, and thus its performance dramatically increasies and
inversely gas residue reduces.
3.
Tertiary combustion
The tertiary combustion occurs when the coal that remains on the bottom burns in a proper and
coordinated way. Coal contains a large amount thermal energy that when used provides a large
amount of heat. Proper air flow directly on the coals within such a hot room, results in almost complete
consumption and minimizing the amount of ash that collects on the bottom
Pic. 9.1.1
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. It is recommended installing a smoke
detector in the room where the fireplace is located.
Under no circumstance should you operate the fireplace with the main door open. You run
a serious risk of destroying the device!!!
DO NOT OVERHEAT THE FIREPLACE! There is risk of fire or permanent damage. If any partof
the fireplace starts glowing, then the device is overheating.