Vetus GHX - Exhaust System Installation; Wet Exhaust System Overview; Exhaust Components and Waterline

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vetus® Installation manual Generator Sets GHX / GLX
3.4 Exhaust system
3.4.1 Wet exhaust systems
The exhaust system of VETUS generator sets is water injected. The cooling water that has passed the heat exchanger is
mixed with the exhaust gases. Temperature and volume of the gases are thereby reduced considerably so that a rubber
exhaust hose can be used.
Beyond conveying exhaust gases and cooling system sea water out of the boat, the other purpose of the exhaust system
is to prevent sea water intrusion into the engine (at the exhaust outlet) under all conceivable conditions of boat trim,
boat operation, sea conditions, and heel angle while not exceeding the manufacturer’s back pressure recommendations.
Seawater intrusion is usually catastrophic to the engine.
IMPORTANT
The engine supplier is not in a position to judge what installation characteristics will
prevent water intrusion in all conceivable circumstances. That judgment is the respon-
sibility of the engine installer.
What we as the manufacturer can do is advise the best practice.
3.4.2 Installation material
The parts needed to connect the exhaust system are included in the scope of delivery.
These parts are: - Waterlock,
- Muer,
- Gooseneck,
- Transom connection and
- 3 metre Exhaust hose.
For inner diameter:
Generator set model Diameter
GHX 8, GHX 9, GHX 14, GHX17, GLX 6, GLX 7 40 mm
GHX 24, GLX 14, GLX 17 50 mm
GLX 20, GLX 24 60 mm
3.4.3 Waterline
We need to dene the water line for exhaust installation purposes. By water line we mean the highest point the water
level can reach, at the location of the exhaust
through hull tting, from all conceivable caus-
es - other than passing waves of a duration
of not more than a second or two. This worst
case water level could be caused by any of the
following: backing down aggressively, turning
aggressively, coming up onto a plane, deceler-
ating o a plane, extreme boat trim, high seas,
wallowing in following seas, heeling, etc. Here
after these instructions will refer exclusively
to this worst case water level as the relevant
water level to plan a good installation.
WL
MIN. 15 cm (6”)
WL