Installation - Vetus NLPG40 Einbauanleitung

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).
- 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 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; es-
pecially when the coolant water injection bend is installed
virtually horizontally.
If necessary, take action. For example; by fitting a water vor-
tex or a water splitter in the exhaust pipe, to improve the
mixing 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.:
NLPG40 ø 40 mm (1 9/16")
NLPG45 ø 45 mm (1 3/4")
NLPG50 ø 50 mm (2")
NLPG60 ø 60 mm (2 3/8")
NLPG75 ø 75 mm (3")
NLPG90 ø 90 mm (3
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.
Too much water in the waterlock can effect engine starting;
drain off this water first. Too much water in the waterlock can
be also caused by repeated starting attempts while the engine
refuses to start.
4 4
030428.02 030414.02
Engine power to:
18 kW (24,5 hp)
22 kW (30 hp)
28 kW (38 hp)
39 kW (53 hp)
63 kW (86 hp)
1 / ") 89 kW (121 hp)
2
W
arning
2

Installation

2.1 Installing goose neck NLPG
Fit the goose neck in such a way that its top is at least 45 cm (18")
above the waterline, see drawing. In a sailing ship, the goose neck
should be installed as close to midships as possible.
min. 45 cm
(18")
2.2 Hose connections
In order to achieve the ideal connection between the hoses and the
goose neck, both hose connections turn through 360 degrees.
NLPG40
NLPG45
NLPG50
NLPG60
NLPG75
NLPG90
Loosen the bolts before turning the hose connections!
Tighten the hose connections to a torque of 1 Nm (0.74 ft-lb,
142 oz-in).
min. 45 cm
(18")
1 Nm
(0.1 kgm,
0.74 ft.lbf )
Goose neck NLPG
W.L.