Unical TERNOx 2S, Инструкции по установке, использованию и обслуживанию

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9
Tec
hnical f
eatures
2.1 - TECHNICAL FEATURES
One of the significant aspects taken into account when design-
ing the TERNOx 2S series boilers is the reduction of the forma-
tion of pollutants in exhaust gases.
One of these consists of nitrogen oxides (Nox). In Europe, their
emission is governed by several legislative standards and pro-
visions. Welding procedures and devices are approved and
certified according to EN Standards.
The main technical elements of the design are:
- An accurate study of geometries, to achieve an ideal ratio
between combustion volumes and exchange surfaces.
- The selection of the materials used to guarantee the long life
of the boiler.
Welding procedures and devices are approved and certified
according to EN Standards.
The boilers have pressurised combustion, with 3 flue gas pass-
es with passing flame and wet inversion chamber.
The combustion gases produced by the burner, having passed
the combustion chamber of the furnace, enter the pipes in the
second flue gas pass.
After the exhaust gases return to the front of the boiler, they
again change direction and pass through the pipes of the third
flue gas pass towards the flue duct.
This type of boilers achieves a high average yearly performance
and low content of harmful substances in the flue gas. Another
advantage of the three flue gas pass structure consists of the
fact that combustion products remain less time in high temper-
ature areas, thus limiting harmful emissions of nitrogen oxides.
The boiler body is thermally insulated by the application of a
mineral wool mattress with a high insulation level to reduce
heat dispersion to extremely low levels. It is finished by alumin-
ium sheets.
2
TECHNICAL FEATURES
AND DIMENSIONS
2.2 - OPERATION PRINCIPLE
TERNOX 2S boilers have pressurised combustion, with 3 flue
gas passes with passing flame and wet inversion chamber.
The combustion gases produced by the burner, having passed
the inversion chamber of the furnace, enter the pipes in the
second flue gas pass.
After the exhaust gases return to the front of the boiler, they
again change direction and pass through the pipes of the third
flue gas pass towards the flue duct. The combustion chamber is always pressurised while the burn-
er is operating.
For the value of this pressure, see the TECHNICAL DATA table,
in the column Flue gas pressure drop.
The flue gas duct and the fitting to the flue must be implement-
ed in compliance with Standards and Legislation in force, with
rigid ducts resistant to heat, condensation, mechanical stress
and airtight.
1 Furnace
2 Smoke pipes
3 Door with flame control warning light
4. Smoke chamber
5 Body insulation
(2
nd
pass) (3
rd
pass)