HDG Turbotec 50 L, Руководство по эксплуатации

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4 Planning and installation – Connections
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4.3 Connections
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HIMNEY
The benefits of the HDG Turbotec with HDG Lambda Control 1 can
only be enjoyed if all of the prerequisites for good combustion are
ensured. The heating system and chimney form a single functional
unit and must be adapted to one another in order to guarantee fault-
free and economical operation.
As, when partially loaded, the flue temperature may lie below 100 °C,
a chimney/flue is required which meets class I requirements. If this is
not the case, contact a certified heating installation company.
Another essential criterion is to achieve the correct conveying
pressure. This depends on three major factors.
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HIMNEY CHARACTERISTICS
The requirements for minimising the draught loss in the chimney are:
• Good thermal insulation to avoid the flue gases cooling down too
quickly.
• Smooth interior surface to reduce the flow resistance.
• Pressure tightness to avoid outside air leaking in. Outside air
would speed up the cooling of the flue gases.
These requirements correspond to chimneys in designs I and II as
specified in DIN 4705 Part 2.
Insulated chimneys used today, consisting of a fireclay or stainless
steel pipe with an insulating jacket and cladding bricks (three shell
design) are to be assigned to groups I - II. Uninsulated chimneys
made of bricks or similar material correspond to design type III and
are unsuitable. Free-standing chimneys require particularly good
insulation.
DIN 18160 “Flue systems” and DIN EN 13384-1 “Thermal and
fluid dynamic calculation methods” should also be observed with
regard to chimney characteristics.
Danger!
When piping the heating system, observe the dimensions of the
boiler and ensure the minimum clearances.
According to EN 303-5, the entire flue system is to be installed in
such a way that contamination, condensation and insufficient
conveying pressure are completely avoided. Here it is to be noted
that, in the accessible operational area of the boiler, exhaust
temperatures of less than 160 K above room temperature may arise.
The required exhaust values are listed in chapter “3 Mode of
operation”, section “3.3 Technical data”.