Vetus LGS Serie Instrucciones De Instalación página 4

Introduction
The Vetus exhaust system components are only suitable for
use in water-injected exhaust systems. The maximal continuous
operating temperature of the exhaust gas / cooling water sepa-
rator type LGS is 70° C.
• Install a temperature alarm to signal the fact that the
temperature of the exhaust system is too high.
• If the quantity of water injected is reduced with a view
to reducing the back pressure in the exhaust system,
check to ensure that sufficient water is also injected
while the motor is running at a standstill. This will pre-
vent the exhaust system from overheating.
• If the mixing of the cooling water with the exhaust gas-
ses is not optimal, this may result in the overheating of
the exhaust system.
This will occur if the motor is running at a idle speed,
particularly in those cases in which the cooling water
injection bend mounted on the motor is virtually hori-
zontal.
If necessary, take the necessary measures to improve
the mixing of the cooling water with the exhaust gas-
ses.
Ensure that hose of a suitable quality is used as an outlet pipe
for water-injected exhaust systems.
The hose must be reinforced and able to withstand exhaust
gasses, high temperatures (100° C, 212°F) and oil residue. The
hose must be suitably flexible for processing yet it must not col-
lapse when heated.
Vetus exhaust hose meets all of the necessary requirements.
The hose connection parts of the exhaust gas / cooling water
separator LGS may be 40, 45, 50, 60 or 75 mm in diameter.
Different diameters can be used on the inlet and outlet side
without any problem.
However, the following guidelines should be respected :
Engine power to:
18 kW (25 hp)
23 kW (32 hp)
29 kW (40 hp)
40 kW (55 hp)
65 kW (90 hp)
WARNING
The valve in the cooling water drainage pipe must be
closed while the motor is at a standstill. When sailing with
the motor at a standstill (when using only the sails), water
from outside can be forced into the exhaust gas / cooling
water separator if the valve in the cooling water drainage
pipe is left open.
If water from the exhaust gas / cooling water separator
enters the exhaust system of the motor via the outlet
damper (for example if the ship rolls or pitches wildly while
sailing) this will inevitably result in damage being caused
to the motor.
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030411.02
Hose dia.:
40 mm
45 mm
50 mm
60 mm
75 mm
Installation
Installing the exhaust gas / cooling water separator
As far as possible the exhaust gas / cooling water separator
should be installed vertically and above the water line.
When correctly installed the exhaust gas / cooling water sepa-
rator replaces the goose-neck. The highest point of the exhaust
gas / cooling water separator must be at least 45 cm (16")
above the water line.
In the case of a sailing boat, the exhaust gas / cooling water
separator also needs to be installed as close to midship as
possible. This ensures that if the boat is sailing at an angle, the
highest point of the exhaust gas / cooling water separator is
not dramatically less than the required 45 cm (16") above the
water line.
The exhaust gas / cooling water separator contains water while
in operation. this means that the weight of the exhaust gas
/ cooling water separator increases, thus the exhaust gas /
cooling water separator should be installed against a level and
sufficiently solid partition using the assembly belt ( LGS 40,
45, 50) / ty-raps ® ( LGS 60, 75) provided (drawing 1).
Exhaust tubing
In order to assure that the remaining cooling water in the
exhaust tubing drains out properly, the exhaust tubing should
be installed from the exhaust to the transom exhaust connection
along the full length of the fall.
The exhaust hose also contains water while in operation. This
causes the weight of the exhaust hose to increase conside-
rably. Thus take care to ensure that the exhaust hose is well
supported.
Connections to the exhaust hose
In order to assure that the exhaust hoses can be optimally con-
nected to the exhaust gas / cooling water separator, both hose
connections can be rotated through 360°. Both hose connecti-
ons can function as 'IN' or 'OUT'!
Unscrew the hose clamps before turning the hose connections
(drawing 2)!
Re-tighten the hose connections with a tightening torque
of 5 - 6 Nm ( LGS 40, 45, 50) / 0,4 Nm ( LGS 60, 75).
Only use water and/or soap to make it easier to attach the hose
to the hose connections. Do not use any products containing
grease or oil.
Assemble each of the hose connections with 2 stainless steel
12-mm hose clamps.
Water drainage pipe
A skin fitting (G 1 1 /  LGS 40, 45, 50 / G 2  LGS 60, 75)
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with a valve and a hose pillar must be installed to drain off the
cooling water. When choosing the point for the skin fitting, the
following should be taken into account :
- The outflow of the cooling water must not be obstructed
- No thrust pressure must be allowed to accumulate. If it
does, water will flow into the exhaust gas / cooling water
separator from the outside!
- The skin fitting may be installed above or a maximum of
7.5 cm (3") below the water line.
Use a reinforced water hose or exhaust hose with a diameter of 38
mm (1 1 / ") ( LGS 40, 45, 50) / 50 mm (2") ( LGS 60, 75) to con-
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nect the exhaust gas / cooling water separator to the skin fitting.
Exhaust gas / cooling water separator LGS