Installation Examples - Vetus NLPH40 Instrucciones De Instalación

The two halves can be turned relative to each other as follows:
1 Unscrew the clamp
2 Turn the half of the housing to the desired position
3 Tighten the clamp sufficiently using a torque of 0.3 Nm
(0.22 ft-lb, 42 oz-in).
During operation, the waterlock will contain water. Its weight will
thus increase considerably, so fit the waterlock with the ty-raps
supplied. The waterlock has slots in which the ty-raps
be fitted.
Installing the transom exhaust connection
Fit the transom exhaust connection at such a position that with
the ship fully laden, the outlet is still at least 5 cm (2") above
the waterline.
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 waterlock.
During operation, the exhaust pipe will contain water. This will
increase its weight considerably, so support the exhaust pipe
properly.
The exhaust pipe from waterlock 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 (5 ft) above the underside of the waterlock.
- The length of the section between the waterlock and the
highest point, should not exceed 300 cm (10 ft).
Fitting the hose
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 (
Waterlock NLPH
wide hose clamps.
Sensor for temperature alarm
A sensor for a temperature alarm can be fitted in the exhaust pipe.

Installation Examples

Exhaust systems with a waterlock type NLPH, goose neck type
NLPG 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
® should
goose neck should be fitted directly above the exhaust silencer,
if possible (see drawings 1 and 3).
When the goose neck is fitted directly to the transom (drawings
2 and 4), the maximum length of the exhaust pipe, between
exhaust silencer and the 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 (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.
The air vent pipe can be connected to its own hull outlet (H)
or to the connection on the gooseneck intended for this,
type NLPG (G). See the manual for the NLPG, no. 030428.01
(Only NLPH40, 45, 50).
 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 waterlock. The waterlock has
two drain plugs for this purpose.
1 / ")
2
ENGLISH
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030427.03