INSTALLATION
EN / M-SC6/8/10 - 3000RPM / June 2010
13
2
"SUPER SILENT" EXHAUST SYSTEM
See figure 11. In order to reduce the noise level of the
generating set to a minimum, an option to reduce the
exhaust noise further (especially exhaust water splashing)
is an exhaust/water separator. The exhaust/water
separator allows the cooling water to be ejected through a
line separate from the exhaust fumes and also functions
as a goose neck to prevent water from flooding the engine.
If the exhaust/water separator is mounted more than 60
cm above the water level an additional goose neck is not
required.
If the through-hull exhaust outlet has to be mounted far
from the generating set (Total length of the exhaust piping
from generator to top of goose neck (water separator) is
more than 3m.), an exhaust/water separator must
definitely be installed. The sea water from the separator
must then run down along the shortest possible path to the
through-hull outlet.
Only after the exhaust/water separator the exhaust hose
may have a length of over 7,5 m if the exhaust hose
diameter is also increased from Ø 40 mm (1
5
/
8
”) to 51 mm
(2”) in order to reduce the back pressure (ref. to figure 12)
However watertraps should be avoided as the fumes still
contains water and this should not accumulate in bents
(refer to figures 15 and 16). An additional outlet exhaust
muffler close to the hull outlet will help further to reduce
noise emission.
Fig.15: Water trap in exhaust system
Figure 16: Water will collect in the hanging bend of the exhaust gas hose and will cause back pressure
OK!
WRONG!
