Furuno 525ST-PWC, 525T-PWD Installation Instructions

INSTALLATION INSTRUCTIONSOWNER’S GUIDE &

Transom-Mount Transducer

or TRIDUCER

Model P66

U. S. Patents: 5,606,253; 5,719,824

WARNING: Always wear safety goggles and a dust mask when installing to prevent personal injury.

WARNING: When the boat is placed in the water, immediately check for leaks around the screws and any other holes drilled in the hull.

17-247-03 rev. 04 12/14/10

CAUTION: Never pull, carry, or hold the transducer by the cable as this may sever internal connections.

CAUTION: Never strike the multisensor with anything except the palm of the hand. Never strike the paddlewheel.

CAUTION: Never use solvents. Cleaners, fuel, paint, sealants, and other products may contain strong solvents, such as acetone, which attack many plastics greatly reducing their strength.

IMPORTANT: Please read the instructions completely before proceeding with the installation. These instructions supersede any other instructions in your instrument manual if they differ.

Multisensor

with Integral Release Bracket

Record the information found on the cable tag for future reference.

Part No._________________Date___________Frequency________kHz

TRIDUCER multisensor

Transducer

Angle finder Marine sealant (suitable for below waterline) Screwdrivers Straight edge Pencil Grommet(s) (some installations) Cable ties Water-based anti-fouling paint (mandatory in salt water)

Mounting Location

CAUTION: Do not mount in an area of turbulence or bubbles:

near water intake or discharge openings; behind strakes, struts, fittings, or hull irregularities

CAUTION: Avoid mounting the sensor where the boat may be supported during trailering, launching, hauling, or storage.

Applications

• Not recommended for boats with large inboard engine(s)

• Not recommended for stepped hull

• Good operation up to 44kn (50MPH)

• Vertically orients sound beam on hull with deadrise angle up to 30°

• Adjusts to transom angles from 2

• Bracket protects sensor from frontal impact only

°–22°

Tools & Materials

Safety goggles Dust mask Scissors Masking tape Electric drill Drill bits:

Bracket holes 4mm, #23, or 9/64" Transom hole (optional) 21mm or 13/16" Cable clamp holes 3mm or 1/8"

min.: 127mm (5")

headroom

max. no speed sensor: 191mm (7-1/2")

max. with speed sensor: 213mm (8-1/2")

• For the best performance, the sensor must be in contact with smooth water. To identify an area of clean water, observe the water flow off the transom while the boat is underway.

• Allow headroom space above the bracket for it to release and rotate the sensor upward (see Figure 1).

• Mount the sensor as close to the centerline (keel) of the boat as possible to ensure the sensor remains in the water when the boat is turning.

• Single drive boat—Mount at least 75mm (3") beyond the swing

radius of the propeller (see Figure 2). The starboard side where the propeller blades are moving downward is preferred.

• Twin drive boat—Mount the sensor between the drives.

NOTE: Starboard side of hull where propeller blades are moving downward is preferred.

75 mm (3") minimum beyond swing radius

Figure 1. Headroom required on a stepped transom

Figure 2. Mounting location on single drive boat

Figure 3. Template

for starboard side of boat

Pretest Speed & Temperature Functions

Connect the multisensor to the instrument and spin the paddlewheel. Check for a speed reading and the approximate air temperature. If there is no reading(s) or it is inaccurate, check the connections and repeat the test. If there is still no reading(s) or it is inaccurate, return the product to your place of purchase.

Drill at locations labeled “B”

for transom angles 16° through 22°

(most small aluminum boats)

Drill at locations labeled “A”

for transom angles 2° through 15°

(most boats)

Align arrow with bottom of transom

parallel to waterline

Align template vertically

slope of hull

waterline

parallel to waterline

align template arrow with bottom edge of transom

Figure 4. Template position

Installation

CAUTION: Install the bracket before attaching the sensor.

Hole Drilling

CAUTION: To prevent drilling too deeply, wrap masking tape around the bit 22mm (7/8") from the point. Fiberglass hull—Minimize surface cracking by running the drill in reverse until the gelcoat is penetrated.

1. Cut out the template (see Figure 3).

2. At the selected location on the starboard side of the hull, position the template, so the arrow at the bottom is aligned with the bottom edge of the transom (see Figure 4). Being sure the template is parallel to the waterline, tape it in place.

3. Using a 4mm, #23, or 9/64" bit, drill three holes 22mm (7/8") deep at the locations indicated.

Compensating for the Transom Angle—Shim

CAUTION: For boats capable of speeds above 20kn (28 MPH)—The trailing edge of the sensor must be deeper in the water than the leading edge. This will ensure that the paddlewheel is in contact with the water at high speeds.

For the best performance, the transducer beam must be aimed straight at the bottom. Since the transom of most boats is angled, the bracket must compensate for it. Measure the transom angle of the boat with an angle finder.

• Standard transom (13° transom angle)—The bracket is designed for a standard 13° transom angle. The shim is NOT needed for this installation. Go to "Mounting the Bracket."

• Stepped transom and jet boats (3° transom angle) —Use the shim with the taper down.

• Small aluminum and fiberglass boats (20° transom angle)—Use the shim with the taper up.

• If you are unsure about using the shim—Experiment with the shim. Follow the instructions: “Mounting the Bracket”, “Attaching the Senor to the Bracket”, and “Checking the Angle and Projection.”

bracket

screw

actual size

slope of hull

38mm (1-1/2")

Figure 5. Distance between

corner of bracket and

bottom of transom

self-tapping

screw

actual size

cover

screws

(self-tapping

#6 x 5/8")

transducer

housing

Figure 6. Speed sensor or blank

(some installations)

speed sensor

mounting ears

tab in slot

cover

flush with

housing

insert screwdriver here to remove cover

Figure 7. Cover

(some installations)

closed

opened

Figure 8. Bracket

retaining cover

+ 2 hidden pages