4
030412.05
Exhaust systems 30-90 mm
W
arning
If water enters the engine from the waterlock 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 waterlock LP, LSG, LSL and LSS
Instal the waterlock as vertical as possible.
Position the waterlock
‘back-to-front’
alongside the engine when
there is insufficient space behind the engine.
Because the waterlock contains water during use, the weight increa-
ses significantly. Fit the waterlock with tension straps.
n
ote
Make sure the following conditions are met under all sailing
conditions (e.g. heeling):
• The waterlock ‘IN’-connection is located below the level of the
exhaust injection bend.
• the distance between the bottom of the engine's cooling wa-
ter outlet and the highest point of the waterlock is at least 5
cm (2").
For additional exhaust system information see chapter 3.
2.2
Installing the transom exhaust connection
Fit the transom exhaust connection at such a position that with the
ship fully laden, the transom connection 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 rubber transom exhaust connection TRCxxR, where xx stands for
the diameters of 40 mm (1 9/16”), 45 mm (1 3/4”), 50 mm (2”), 60 mm
(2 3/8”), 75 mm (3”) and 90 mm (3
1
/
2
”), requires a hose connector for
fitting the exhaust hose.
The maximum thickness of the transom where the transom connec-
tion is fitted, can be 40 mm (1 9/16”) with this type, with the excep-
tion of the TRC7590R. With these, the maximum transom thickness is
20 mm (13/16”) .
With the plastic transom exhaust connection TRCxxPV, xx stands for
diameters of 40 mm (1 9/16”), 45 mm (1 3/4”), 50 mm (2”), 60 mm (2
3/8”), 75 mm (3”) and 90 mm (3
1
/
2
”), the exhaust hose can be fitted
directly, without hose connector.
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 LSG, LSL and LSS exhaust silencers have a very large capacity,
so that they are exceptionally suitable for use in systems with extra
long exhaust pipes. An extra large capacity waterlock is of vital im-
portance for a sailing ship, which will roll and pitch in rough water
with the engine off!
The LSG-type waterlock is also fitted with a non-return valve; this vir-
tually prevents any water entering the exhaust system. Water entry
can be caused by the ship pitching, waves from aft, or stopping the
ship quickly.
- Fit a temperature alarm to warn of excessively hot exhaust
system temperature.
- If the quantity of injected coolant water is reduced to in or-
der to lower back-pressure in the exhaust system, check that
there is still sufficient water injected when the engine is tick-
ing-over. This will prevent excess temperatures in the exhaust
system.
- Excess temperature can also be the consequence of insuffi-
cient mixing of coolant water with the exhaust gasses.
In general, good mixing is obtained by a virtually vertically
installed exhaust injection bend.
Poor mixing can also occur with an engine on tick-over; espe-
cially when the coolant water injection bend is installed virtu-
ally horizontally.
If necessary, take action. For example; by fitting a water vor-
tex or a water splitter in the exhaust pipe, to improve the mix-
ing of coolant water with the exhaust gasses.
With water-injected exhaust systems, fit a hose of suitable quality.
This hose must be reinforced, resistant to exhaust gasses, high tem-
peratures (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 fulfils all the above requirements.
Hose dia.:
Engine power to:
WLOCKLP30
ø 30 mm (1 3/16”) 10 kW (13,6 hp)
WLOCKL40R / LSS40A
ø 40 mm (1 9/16”) 18 kW (24,5 hp)
WLOCKL45R / LSS45A
ø 45 mm (1 3/4”)
22 kW (30 hp)
WLOCKL50R(S) / LSS50A ø 50 mm (2”)
28 kW (38 hp)
WLOCKLP60 / LSL60
ø 60 mm (2 3/8”)
39 kW (53 hp)
WLOCKLP75 / LSL75
ø 75 mm (3”)
63 kW (86 hp)
WLOCKLP90 / LSL90
ø 90 mm (3
1
/
2
”)
89 kW (121 hp)
LSG60
ø 60 mm (2 3/8”)
34 kW (46 hp)
LSG75
ø 75 mm (3”)
55 kW (75 hp)
LSG90
ø 90 mm (3
1
/
2
”)
77 kW (105 hp)
