1.
Vessel’s longitudinal axis.
Location requirements — ACU
The installation location must take into account the
following requirements:
• ACU-200, ACU-300, ACU-400 — install below
decks in a dry area.
• ACU-100, ACU-150 — install above or below
decks.
• The unit should be mounted on a vertical surface.
• The unit should be located as close to the battery
as practical.
• Choose a location where the unit will be safe from
physical damage and excessive vibration.
• Choose a location where the unit will not be
subjected to a load or force.
• Mount away from any source of heat or potential
flammable hazards, such as fuel vapor.
• The unit should be mounted in a location where
the diagnostics LED is viewable.
Compass safe distance
To prevent potential interference with the vessel's
magnetic compasses, ensure an adequate distance
is maintained from the product.
When choosing a suitable location for the product
you should aim to maintain the maximum possible
distance from any compasses. Typically this distance
should be at least 1 m (3 ft) in all directions. However
for some smaller vessels it may not be possible to
locate the product this far away from a compass. In
this situation, when choosing the installation location
for your product, ensure that the compass is not
affected by the product when it is in a powered state.
EMC installation guidelines
Raymarine equipment and accessories conform to
the appropriate Electromagnetic Compatibility (EMC)
regulations, to minimize electromagnetic interference
between equipment and minimize the effect such
interference could have on the performance of your
system
Correct installation is required to ensure that EMC
performance is not compromised.
Note:
In areas of extreme EMC interference,
some slight interference may be noticed on the
product.Where this occurs the product and the
source of the interference should be separated by
a greater distance.
For
optimum
EMC performance we recommend
that wherever possible:
• Raymarine equipment and cables connected to
it are:
– At least 1m (3ft) from any equipment transmitting
or cables carrying radio signals e.g. VHF radios,
cables and antennas. In the case of SSB radios,
the distance should be increased to 7 ft (2 m).
– More than 2m (7ft) from the path of a radar
beam. A radar beam can normally be assumed
to spread 20 degrees above and below the
radiating element.
• The product is supplied from a separate battery
from that used for engine start. This is important to
prevent erratic behavior and data loss which can
occur if the engine start does not have a separate
battery.
• Raymarine specified cables are used.
• Cables are not cut or extended, unless doing so is
detailed in the installation manual.
Note: Where constraints on the installation
prevent any of the above recommendations
,
always ensure the maximum possible separation
between different items of electrical equipment, to
provide the best conditions for EMC performance
throughout the installation
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