Installation Of Transducer - Furuno GP-3500F Installation Manual

1.3 Installation of Transducer

Inside-hull mounting
The thru-hull mount transducer (520-5PSD, 520-5MSD) may also be installed inside the hull,
following the procedure below.
Necessary tools
You will need the following tools:
Sandpaper (#100)
Marine sealant
Remarks on installation
Turn off the engine and anchor the boat while installing the equipment.
Install the transducer in the engine room.
Do not turn on the echo sounder except if installing the transducer by the inside-hull
mounting method. The transducer may become damaged if the power is turned on in
other types of installations.
Choosing the mounting location
Keep the following points in mind when choosing a mounting location:
The mounting location should be where the hull is of single-hull thickness and is void of
air or flotation materials other than solid fiberglass between the transducer face and the
water.
Do not place the transducer over hull struts or ribs which run under the hull.
Avoid a location where the rising angle of the hull exceeds 15°, to minimize the effect of
the boat's rolling.
You will finalize the mounting location through some trial and error. The procedure for this
is shown later.
Centerline
50 cm
15 cm
15 cm
50 cm
Inside-hull transducer mounting location
5
1/2
1/3
Transducer
mounting
location