Whisper Power M-SC3.5 Installation Manual page 11

INSTALLATION
2 "SUPER SILENT" EXHAUST SYSTEM
See figure 10. 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.
The exhaust/water separator is mounted more than 60 cm
above the water level.
See figure 11. If the through-hull exhaust outlet has to be
mounted far from the generating set, an exhaust/water
separator must definitely be installed. (Total length of the
exhaust piping from generator to top of goose neck (water
separator) is more than 2,50 m.) The sea water from the
separator must run down along the shortest possible path
to the through-hull outlet.
Only when using an exhaust /water separator the exhaust
WRONG!
may have a length up to 7,5m after the water/gas
separator.
However water traps should be avoided as the fumes still
contains water and this should not accumulate in bents
(refer to figures 12 and 13). An additional outlet exhaust
muffler close to the hull outlet will help further to reduce
noise emission.
Fig.12: Water trap in exhaust system
WRONG!
Figure 13: Water will collect in the hanging bend of the exhaust gas hose and will cause back pressure
11
EN / M-SC3.5 / September 2010