Installation Instructions

Installation and Service Manual Epsilon-Series
21
6.7.1 Dimensioning of the ue gas and air intake duct
The ue diameter is determined by the total length of the run, including for the connection
pipe, elbows ttings and terminal covers etc. and the type and number of boilers installed
into the system.
An undersized ue pipe can lead to disorders. Look at table 6.7.1.a for the choice of the
system and the correct diameter. The table below shows the maximum ue lengths with
the dierent boiler outputs. A longer ue gas length can be achieved by increasing the
diameter to ø 100mm.
Explanation table 6.7.1.a:
Parallel ue gas system: maximum noted length = distance between boiler and roof
terminal A
Concentric ue gas system: maximum noted length = distance between boiler and roof
terminal B
When using bends the noted value behind every bend should be deducted from the
maximum straight length.
ø80mm
A
in m
ø100mm
A
in m
EB 40 Maximum straight length 80 18 Maximum straight length 100 39
87° bend resistance length -1,4 87° bend resistance length -2,1
45° bend resistance length -0,9 45° bend resistance length -2
EB 50 Maximum straight length 80 6 Maximum straight length 100 18
87° bend resistance length -1,4 87° bend resistance length -2,1
45° bend resistance length -0,9 45° bend resistance length -2
ø80/125mm
B
in m
ø100/150mm
B
in m
EB 40 Maximum straight length 80/125 13 Maximum straight length 100/150 34
87° bend resistance length -3 87° bend resistance length -1,7
45° bend resistance length -1,9 45° bend resistance length -1,3
EB 50 Maximum straight length 80/125 6 Maximum straight length 100/150 10
87° bend resistance length -3 87° bend resistance length -1,7
45° bend resistance length -1,1 45° bend resistance length -1,3
Parallel flue system
Concentric flue system
Dimensionsuegassystemandairsupplysystem         Table6.7.1.a
Example:
A EB 40 with a concentric
ue gas system ø80/125mm
has according to the table a
maximum ue straight length
of 13m In the system that is
going to be put in there are
2 x 45° bends, so the
maximum ue gas length
is
13 – ( 2 x 1.9 ) = 9.2 meters.