Selecting A Location - Lighthouse a65 Installation And Operation Instructions Manual

3.15 Selecting a location

Warning: Potential ignition source
This product is NOT approved for use in
hazardous/flammable atmospheres. Do
NOT install in a hazardous/flammable
atmosphere (such as in an engine room
or near fuel tanks).
General location requirements
When selecting a location for your product it is
important to consider a number of factors.
Key factors which can affect product performance
are:
• Ventilation
To ensure adequate airflow:
– Ensure that product is mounted in a
compartment of suitable size.
– Ensure that ventilation holes are not obstructed.
Allow adequate separation of all equipment.
Any specific requirements for each system
component are provided later in this chapter.
• Mounting surface
Ensure product is adequately supported on a
secure surface. Do not mount units or cut holes
in places which may damage the structure of the
vessel.
• Cabling
Ensure the product is mounted in a location which
allows proper routing, support and connection of
cables:
– Minimum bend radius of 100 mm (3.94 in)
unless otherwise stated.
– Use cable clips to prevent stress on connectors.
– If your installation requires multiple ferrites to
be added to a cable then additional cable clips
should be used to ensure the extra weight of
the cable is supported.
• Water ingress
The product is suitable for mounting both above
and below decks. Although the unit is waterproof,
it is good practice to locate it in a protected area
away from prolonged and direct exposure to rain
and salt spray.
• Electrical interference
Select a location that is far enough away from
devices that may cause interference, such as
motors, generators and radio transmitters /
receivers.
• Power supply
Select a location that is as close as possible to the
vessel's DC power source. This will help to keep
cable runs to a minimum.
48
Compass safe distance
To prevent potential interference with the vessel's
magnetic compasses, ensure an adequate distance
is maintained from the display.
When choosing a suitable location for the
multifunction display you should aim to maintain the
maximum possible distance between the display and
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 display this far away from a compass. In this
situation, the following figures provide the minimum
safe distance that should be maintained between the
display and any compasses.
6
2 5 0
m m
( 9 . 8
4 i n
)
m m
7 0 0
n )
. 5 i
( 2 7
5
Compass
position in
relation to
Item display
1 Top
2 Rear
3 Right-hand side
4 Underside
5 Front
6 Left-hand side
GPS location requirements
In addition to general guidelines concerning the
location of marine electronics, there are a number
of environmental factors to consider when installing
equipment with an internal GPS antenna.
Mounting location
• Above Decks mounting:
Provides optimal GPS performance. (For
equipment with appropriate waterproof rating.)
• Below Decks mounting:
GPS performance may be less effective and may
require an external GPS antenna mounted above
decks.
1
2
0 0
m m
m m
( 7 . 8 5 0 0
n )
. 7 i
7 i n
( 1 9
)
3 5 0
3 0 0
m m
( 1 3
m m
( 1 1
. 8 i
. 8 i
n )
n )
3
4
Minimum safe
distance from
display
200 mm (7.87 in.)
500 mm (19.7 in.)
350 mm (13.8 in.)
300 mm (11.8 in.)
700 mm (27.5 in.)
250 mm (9.84 in.)
a Series / c Series / e Series
2
D12203-1