Whisper Power M-SC6 Installation Manual page 12

INSTALLATION
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.
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
(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 13 and 14). An additional outlet exhaust
muffler close to the hull outlet will help further to reduce
noise emission
OK!
Figure 14: Water will collect in the hanging bend of the exhaust gas hose and will cause back pressure
12
The exhaust/water
5
/ ") to 51 mm
8
OK!
WRONG
Fig.13: Water trap in exhaust system
WRONG!
December 2010 / M-SC 6/8/10 - 3000RPM / EN