Raymarine L470 instruction manual Installation Notes - In-Hull Transducer

6.If the hull of the boat has a core-type hull, you will need to follow some special mounting procedures. The core material must be protected from any water which may leak from the inside of the boat. (If the core material is allowed to remain wet, it may rot and weaken the hull.)

7.When working with the transducer, support it by holding the body of the unit or the rings. Do not hang the transducer from the cable.

8.It is very important to seal the opening around the transducer using a high-quality marine sealant suitable for underwater use. After installation, do not leave your boat in the water for any amount of time without checking for leaks.

Installation Notes – In-Hull Transducer

Detailed instructions for this installation will be included with the trans- ducer. In this section, we will note just a few important points.

1.Choose the best mounting location:

For outboard powerboats – Install as far aft as possible

For inboard/outboard powerboats – Install close to the engine(s) For inboard powerboats – Install forward of the propeller(s) and shaft(s)

For sailboats – Install near the centerline of the hull and forward of the leading edge of the keel

2.An in-hull transducer may only be installed in a fiberglass hull which is no more than 1" (25 mm) thick. The in-hull transducer may not be installed in wood or aluminum hulls.

3.Use the standard in-hull transducer if it will be installed in a flat part of the hull, or a section with no more than 10° of deadrise. Use the angled in-hull transducer if the mounting location has up to a 22° of deadrise.

4.Do not try to compensate for the angle of the hull by fairing the epoxy adhesive on the face of the transducer.

5.Use the epoxy supplied with the in-hull transducer, or an equivalent epoxy glue. Do not use any other type of adhesive, including silicone or RTV adhesive.

12 Installation