Design Information | 3
M1820921_en | Installation instructions Dual fuel boiler SP Dual compact
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3.4 Chimney connection/chimney system
1
2
3
4
5
1
Connection line to the chimney
2
Measuring port
3
Draught limiter
4
Explosion flap (for automatic boilers)
5
Thermal insulation
NOTICE! The chimney must be authorised by a smoke trap sweeper or chimney
sweep.
The entire flue gas system (chimney and connection) must be laid out as per ÖNORM /
DIN EN 13384-1 or ÖNORM M 7515 / DIN 4705-1.
The flue gas temperatures (for clean systems) and additional flue gas values can be
found in the table in the technical data.
Local regulations and other statutory regulations are also applicable.
EN 303-5 specifies that the entire flue gas system must be designed to prevent, wherever
possible, damage caused by seepage, insufficient feed pressure and condensation.
Please note within the permissible operating range of the boiler flue gas temperatures
lower than 160K above room temperature may occur.
3.4.1 Connection line to the chimney
Requirements got the connection line:
▪ This should be as short as possible and follow an upward incline to the chimney (30 -
45° (recommended)
▪ Leak-tight against overpressure
▪ Thermal insulation recommended
Distance from flammable components:
▪ 100 mm if at least 20 mm thermal insulation is installed
▪ 375 mm if no thermal insulation is present
Recommendation: three times the diameter of the connection line
