Exhaust Pipe - Vetus MF Instructions D'installation

1 Introduction
The Vetus exhaust system components are especially suitable for use
in water-injected exhaust systems.
The maximum continuous operating temperature of the plastic
components of the exhaust systems is 70 degrees C (158 degrees F).
The MF and MV silencers have been developed for fast ships with
high-power engines, where there is often insufficient space for a
water-lock and/or swan's neck.
The MV type silencer is fitted with a non-return valve, this prevents
water entering the exhaust system from aft, caused by reversing,
stopping the ship quickly, or waves from aft.
- Fit a temperature alarm to warn of excessively hot exhaust
system temperature.
- If the quantity of injected coolant water is reduced to in
order to lower back-pressure in the exhaust system, check
that there is still sufficient water injected when the engine
is ticking-over. This will prevent excess temperatures in the
exhaust system.
- Excess temperature can also be the consequence of insuf-
ficient mixing of coolant water with the exhaust gasses.
In general, good mixing is obtained by a virtually vertically
installed exhaust injection bend, see
Poor mixing can also occur with an engine on tick-over;
especially when the coolant water injection bend is
installed virtually horizontally, see
If necessary, take action. For example; by fitting a water
vortex or a water splitter in the exhaust pipe, to improve
the mixing of coolant water with the exhaust gasses, see
drawing 3.
With water-injected exhaust systems, fit a hose of suitable quality.
This hose must be reinforced, resistant to exhaust gasses, high
temperatures (100 degrees C, 212 degrees F) and oil. Easy flexibility
is essential for installation, while the hose must not collapse when
heated.
Vetus exhaust hose fulfills all the above requirements.
Hose dia.:
90 mm
102 mm
127 mm
152 mm
4
030416.02
drawing 1.
drawing 2.
Engine power to:
80 kW (110 hp)
103 kW (141 hp)
160 kW (218 hp)
229 kW (313 hp)
If water enters the engine from the exhaust silencer into the
exhaust system (for example: under sail when the ship rolls
or pitches heavily) this will lead to irreparable damage to the
engine.
The overall dimensions drawing shows the maximum amount
of water which can be contained in the exhaust silencer. Too
much water in the silencer can effect engine starting; drain
off this water first. Too much water in the silencer can be also
caused by repeated starting attempts while the engine refuses
to start.
2 Installation
2.1 Installing MV and MF exhaust silencer
Instal the exhaust silencer as horizontal as possible.
During operation, the exhaust silencer will contain water. Its weight
will thus increase considerably, so fit the silencer with the
supplied.
brackets
2.2 Installing the transom exhaust connection
Fit the transom exhaust connection at such a position that with
the ship fully laden, the outlet is still at least 10 cm (4") above the
waterline.
In order to install the transom exhaust connection so that it remains
watertight, apply marine adhesive sealant between the flange of the
transom connection and the transom.
The exhaust hose on the transom exhaust connection can be fitted
without hose connector.
Type TC
The type TC transom exhaust connection is fitted with a non-return
valve. This prevents water from aft, caused by reversing, quickly
stopping the ship or waves from aft, from entering the exhaust
system.
The maximum wall thickness of the transom, where the transom
connection is fitted, may be 25 mm (1").
Fit the transom exhaust connection with the 'large' plain washers
supplied.
2.3

Exhaust pipe

In order to ensure the proper drainage of the coolant water injected
into the exhaust pipe, the pipe must be installed with a slope down-
ward over its whole length from the water injection point to the
exhaust silencer.
During operation, the exhaust pipe will contain water. This will
increase its weight considerably, so support the exhaust pipe prop-
erly.
W
arning
mounting
vetus® Exhaust silencer MF/MV