4.3
Flue gas connection, flue gas conduit
Due to the low flue gas temperature, condensate forms in
the flue gas line and wind protection equipment.
§
The following directives must be complied
with regarding the flue gas evacuation:
• DVGW (TRGI)
• ÖVGW
• SVGW/VKF
A flue gas temperature limiter as defined in
the aforementioned guidelines is installed in
the boiler.
§
The flue gas system must meet the following
requirements:
• Gas-tight
• Water-tight
• Acid-resistant
•
Approved for flue gas temperatures of up to
120 °C (T 120)
• Approved for overpressure
!
WARNING
The flue gas lines must be secured against
unwanted loosening of the plug connections.
Horizontal connecting pipes must be installed
with an inclination of at least 50 mm per metre
of their length installed in the direction of the
boiler to allow free return flow of condensation
water towards the boiler. The whole flue gas
system must be installed so that condensate
can never collect at any point.
• The cross sections and the maximum
lengths are calculated with reference to dia-
grams or tables.
•
The tables are available from the flue gas
conduit manufacturer.
• The values for the calculation can be found
•
The flue gas conduit cross sections and
lengths are calculated according to the
specified technical data of the boilers.
• Combustion air:
- In the case of room air-independent oper-
a tion (accessories optional) the air pipe
should be of the same dimension as the
flue gas line.
-
If the flue gas line diameter is greater than
the combustion air connection an individ-
ual calculation must be effected.
The following only applies for countries in
which the wall duct is allowed.
For C53 construction boilers, the air intake
opening for the combustion air must not be on
the opposing wall of the exhaust opening of
the flue gas line.
Guidance values for the flue gas pipe dimensions
can be found in the table below:
Basic rules:
• Height over sea level max. 1000 m.
The first 2 m of the flue gas line must be con
-
figured with the same dimension as the flue
gas connector, after which the size of the flue
gas system can be selected according to the
table below.
!
WARNING
Flue gas outlet for oversized flue gas lines.
- For exhaust systems from third-party sup-
pliers (air/flue gas line of versions C63/
C63x), a tolerance of +1/-0.5% of the flue
gas line nominal diameter DN specified in
the table must be upheld for the connection
points.
25
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INSTALLATION
Содержание UltraGas 1000
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