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Section 1
INSTALLATION RECOMMENDATIONS
The installation details are basic guidelines to assist
installation, however due to the great diversity of marine
craft it is impossible to give definitive instructions.
Therefore Beta Marine can accept no responsibility for any
damage or injury incurred during the installation of a Beta
Marine Engine whilst following these guidelines.
• All engines shall be placed within an enclosure
separated from living quarters and installed so as to
minimise the risk of fires or spread of fires as well as
hazards from toxic fumes, heat, noise or vibrations in
the living quarters.
VENTILATION
The engine compartment needs air.
a) as air (oxygen) to burn the diesel fuel, and
b) as air to keep the engine cool (still hot at 100°C)
by ventilation.
It is important that the engine compartment has adequate
ventilation, and this is your responsibility. If there is no
ventilation the engine can overheat and damage can be
caused. As a general statement an engine will produce
radiated heat - approximately equal to
output power. Also the larger battery charging alternators
create lots of heat. (A symptom of overheating problems is
often black belt dust).
Combustion
Ventilation
Inlet / Outlet dia.
INSTALLATION RECOMMENDATIONS FOR KEEL COOLED ENGINES
Keel cooled engines, overheating is sometimes caused by:
a) Not fully venting the engine cooling system of air. It is
necessary to remove all air from the cooling system -
including the "skin" tanks and (if fitted) the Calorifier
and associated piping.
1
/
of the engine
3
10hp
20hp
14 cm
2
28 cm
2
43 cm
13 cm
2
25 cm
2
37 cm
6 cm
9 cm
• Unless the engine is protected by a cover or its own
enclosure, exposed moving or hot parts of the engine
that could cause personal injury shall be effectively
shielded.
• Engine parts and accessories that require frequent
inspection and / or servicing must be readily
accessible.
• The insulating materials inside engine spaces shall be
non-combustible.
If you have any doubts about the temperature of your
engine compartment please check with a thermometer on
a hot day, the maximum temperature in the engine
compartment should less than 60°C - the cooler the
better!
Engine compartment ventilation is normally best with two
holes; an inlet allowing colder air to enter near to the
alternator and drive belts and a second outlet (about the
same size) for the hot air to rise and ventilate out from the
top of the engine compartment. Adequate ventilation must
be included with all installations.
30hp
40hp
2
57 cm
2
71 cm
2
50 cm
2
62 cm
11 cm
12 cm
13 cm
b) Incorrectly sized "skin" tanks that have been sized for
'usual' canal use, rather than maximum engine output
that can sometimes be required on fast flowing rivers.
An additional "skin" tank may need to be fitted; please
refer to our website: Inland waterways - guidelines:
keel cooling tank sizes.
7
50hp
75hp
100hp
2
106 cm
2
142 cm
2
92 cm
2
123 cm
16 cm
19 cm
150hp
2
213 cm
2
2
185 cm
2
22 cm
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