Installation Examples - Vetus DEMPMP Instrucciones De Instalación

Installation examples

Exhaust systems with an exhaust silencer type LP/LSS/LSG,
and silencer type DEMPMP , goose neck type LT and a transom
connection are shown on page 15.
Entry of water from the aft is almost completely prevented by
the extra height difference in the goose neck.
When the engine is stopped, any water which is still in the
exhaust pipe (between the highest point in the exhaust system
and the exhaust silencer) will run back to the exhaust silencer.
To reduce the amount of this water as much as possible, the
swan's neck should be fitted directly above the exhaust silencer,
if possible (see drawings 1 and 3).
When the swan's neck is fitted directly to the transom (drawings
2 and 4), the maximum length of the exhaust pipe, between
exhaust silencer and tee highest point, should be taken into
account.
Prevention of syphoning (drawings 3 & 4)
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:
 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'.
Maintenance
Check all hose connections for gas and water leaks regularly.
Before the winter lay-up, drain the exhaust silencer. The exhaust
silencer has a drain plug for this purpose.
Silencer DEMPMP
ENGLISH
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030413.03