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INSTALLATION
The exhaust pipes will be very hot and all
accessible pipes are dangerous to people
when not insulated.
There are companies that are specialised in insulating hot
pipes and fancy systems are available to make it good
looking. However it is also possible to do it yourself by
winding fibreglass around the pipes and seal it with
aluminium tape.
2.2.2
The standard dry exhaust system
The standard exhaust system contains:
On the generator set:
•
An insulated exhaust bent
In the exhaust installation kit:
•
A stainless steel shielded flexible bellow.
•
One resonance muffler
•
One absorption muffler
•
Clamps and rubbers to mount the system flexible
•
Fittings, bents and pipes to make the different
connections
•
Blankets for thermal and sound insulation.
The mufflers are high quality industrial mufflers that are
much more effective, robust and durable than mufflers
made for automotive use.
2.2.3
Installation of the exhaust
Before determining the location of the generator set one
has to consider how to get away with the exhaust. The
outlet should blow the fumes away from the doors to avoid
a nasty smell. In wind still conditions a light smell of
exhaust fumes around then vessel will not be avoidable.
To bring the exhaust to the top of the roof of the
wheelhouse gives the best results on noise and smell.
However, when the pipes go through the interior of the
vessel, they should be insulated and around the hole in
the roof should be a collar to prevent rainwater to leak in.
Both mufflers could be on the roof or one of them or both
could be below the deck.
In general it is better to have the mufflers wide apart: the
resonance muffler close to the generator and the
absorption muffler on the end of the line. A short pipe
(30cm / 1 ft.) should be on the far end after the absorption
muffler. The absorption muffler has no flow direction and
could be mounted both ways. The resonance muffler
8
should be mounted in the gas flow according to the
indication on the muffler itself.
The resonance muffler should be fitted
according to direction of the gas flow
indicated.
In the kit are clamps to mount the exhaust pipes to steel
bars. These bars should be mounted to the structure of the
ship. It is recommend to use rubber mountings only when
there is risk to transfer vibrations to the structure. However
take care that the heat conducted through the brackets will
not affect the rubber.
Refer to figure 10 how to mount the rubber in a safe way.
When any doubt an extra safe guard could be constructed
from steel wire or chain.
Figure 10. Mounting bracket in rubber with safe guard
Due to the effects of inertia when a boat is
heavily moving in rough water not all bars
should be in rubber but bolded or welded to
the superstructure of the vessel.
2.3
CONNECTIONS
The generating set comes with all supply lines and output
cable (i.e. electric cables, coolant connections, exhaust,
fuel lines etc.) already connected to the engine and
alternator. The supply lines are fed through the capsule's
base. The connections are marked as shown in figures 10
till 17.
All electrical connections, cable types and sizes must
comply with the appropriate national regulations. Supplied
cables are rated for ambient temperatures up to 70°C. If
the cables are required to meet higher temperature
requirements, they must be run through conduits.
September 2010 / WhisperPower keel cooling / EN
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