Installation Examples - Vetus MF 090 Instructions D'installation

Type TRCON
Maximum transom wall thickness at the place where the tran-
som connection is fitted, is 40 mm (1.6").
Type TRCON is available in the diameters 65 mm (2.4"), 75 mm
(3.0"), 90 mm (3.5") and 110 mm (4.3").
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 wash-
ers supplied.
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 downward 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
properly.
The exhaust pipe from silencer to transom connection must be
installed in such a way that:
- The highest point in the exhaust pipe should not be more
than 150 cm (60") above the underside of the exhaust
silencer.
- The length of the section between the exhaust silencer and
the highest point, should not exceed 300 cm (120").
Hose connections
To ease the fitting of the hose to the hose connector, use only
water and/or soap, NOT grease or products containing oil.
Fit each hose connection with 2 stainless steel 12 mm (0.5")
wide hose clamps.
Sensor for temperature alarm
A sensor for a temperature alarm can be fitted in the exhaust
pipe.
Exhaust silencer type MV
A temperature alarm sensor can be fitted directly in the 'IN' con-
nector of the exhaust silencer. Proceed as follows:
- Remove the lock nut from the inside of the 'IN' connection
- Remove the plug
- Fit the sensor (M14 x 1.5 screw thread) and fit the lock nut on
the sensor
Exhaust silencer MF/MV

Installation examples

The illustration on page 16 shows exhaust systems with exhaust
silencer, type MV (with non-return valve) and type MF, a goose
neck (with type MF) and a transom connection with non-return
valve (type TC).
The entry of water from the rear, caused by reversing, fast stop-
ping of the ship or waves from aft, is prevented by the goose
neck and the transomt connection with non-return valve.
With the type MF, a transom connection WITHOUT non-return
valve can also be used instead of a transom connection with
non-return valve.
When the engine has been stopped, any water which is still in
the exhaust pipe (between the highest point and the exhaust
silencer) will run back to the silencer.
Preventing syphoning
If the water injection point 'C' is below, or less than 15 cm (0.6")
above the waterline, (also when the ship heels under sail) there
is a risk that when the engine is stopped, the coolant water
will enter the engine due to syphoning. This syphoning can be
prevented in two ways:
For type MF (drawing 6):
There are two ways of preventing syphoning:
 By creating an air vent system in the coolant water hose
between engine block and water injection point 'C', by fitting
an air vent with air vent pipe, for example.
 By fitting an air vent (with valve) in the coolant water hose
between the engine block and water injection point 'C'.
For type MV (drawing 7):
Syphoning can be prevented by raising the exhaust gas con-
nector and the water injection point 'C' using a water-cooled
riser pipe, see drawing 7.
Maintenance
Check all hose connections for gas and water leaks regularly.
Type MF:
Before the winter lay-up, drain the exhaust silencer. The exhaust
silencer has a drain plug for this purpose.
Type MV:
Check the non-return valve for proper function at least once a
year.
ENGLISH
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030416.02