Hoval TopGas classic 100, Техническая информация Инструкции по установке

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InSTaLLaTIOn
3.2.7 Connection of the pipes
The pipes are connected directly to the flow/return con -
nections after completing installation of the boiler. Please
observe the designations of the pipe connections given in
the chapters 2.4 and 2.5.
3.3 Flue gas connection, chimney
and condensate discharge
Condensate from the flue gas conduit may al -
ways be discharged via the boiler.
Due to the water vapour content in the flue gases at low
temperatures and the resulting further condensation in-
side the flue gas system, gas condensing boilers cannot
be connected to conventional domestic chimneys.
Flue gas evacuation must comply with the applicable
re gu lations and the specific requirements of the DVGW
(TRGI) and ÖVGW guidelines.
In Switzerland, the VKF guidelines (edition 1993, clause
3.4.8) specify that a flue gas temperature limiter as defi-
ned in these guidelines must be installed on the unit out-
let or in the flue gas conduit.
There are two possible ways to evacuate flue gas from
gas condensing boilers:
a) use of special flue gas conduits approved by the build -
ing authorities,
b) use of moisture-resistant flue gas systems which are
ap proved for flue gas temperatures of over 40 °C,
con nected to the gas condensing boiler in the boiler
installation room by means of approved flue gas con -
duits.
In both cases, the cross-sections and maximum lengths
must be calculated on the basis of the flue gas mass flow,
flue gas temperature and available maximum delivery
pres sure at the flue gas outlet (DIN 4705). See chapter
2.3.
As a rule, calculation is effected on the basis of diagrams
or tables provided by the manufacturer of the moisture-re-
sistant flue gas system or approved flue gas conduit. In
some cases, the manufacturer can perform the calcula-
tion using a special calculation program for the specific
product.
We recommend that you consult the regional chimney in-
spec tor before designing and installing a flue gas evacua-
tion system for a gas condensing boiler.
3.3.1 Flue gas conduits approved under building
law
Flue gases from the gas condensing boiler Hoval TopGas
®
classic can be extracted via a gastight, temperature- and
corrosion-resistant flue gas conduit. Only flue gas sys -
tems approved and tested by the respective country or
state (in Austria, the approval requirements of the respec-
tive provinces must be observed) may be connected to
the Hoval TopGas
®
classic. The manufacturers of the flue
gas conduits supply suitable boiler connection fittings for
the transition from the boiler flue gas outlet to the flue gas
conduit. The flue gas outlet on the Hoval TopGas
®
classic
has a concentric flue gas connection, ø 100/150 mm.
We recommend installation of the connector
piece (boiler flue gas connector vertical flue
gas pipeline) in the same diameter as the flue
gas connector on the Hoval TopGas
®
classic.
When designing and installing flue gas conduits, manu -
facturer’s instructions for design and routing and the re-
quirements of building law must be observed. We recom-
mend that you consult the regional chimney inspector in
good time.
Your Hoval dealer can supply an approved flue gas sys -
tem suitable for your Hoval TopGas
®
classic.
Please observe the technical information supplied
with your flue gas conduit.
!
WARNING
Flue gas outlet for oversized flue gas lines.
- For flue gas systems from third-party sup -
pliers (air/flue gas line of versions C63/
C63X), a connector with C100/150 (toler-
ance of +1/-0.5%) must be used.
The following only applies to countries in
which the wall duct is allowed:
For C53 construction boilers, the air intake
open ing for the combustion air must not be on
the opposing wall of the exhaust opening of
the flue gas line.
Due to the low flue gas temperature, condensate forms in
the flue gas line and wind protection equipment.