Standard horizon B744V, B66V, B744VL, B66VL, SS544V Owner Manual
•
•
OWNER’S GUIDE & INSTALLATION INSTRUCTIONS
TRIDUCER
®
Multisensor with Valve
Models: B744V, B744VL, B66V, B66VL, and SS544V
U.S. Patents: 4,898,029; 5,186,050, Re 33,982. Australian Patent 605,281
Canadian Patent 1,313,775. Japanese Patent 1851014.
IMPORTANT : Please read the instructions completely
before proceeding with the installation. These
instructions supersede any other instructions in your
instrument manual if they differ.
WARNING: B744V and B744VL
These models must be installed with a fairing (standard or
high-performance). If the multisensor is installed without a
17-118-03 rev. 03 11/03
fairing, there is insufficient surface area to seal the multisensor to the hull. Water may leak into the hull causing
damage to the boat or possibly sinking.
WARNING: B744V, B744VL and SS544V
with a high-performance fairing
These models must be installed following the supplemental
instructions that came with the high-performance fairing. A
high-performance fairing requires an anti-rotation bolt. Failure to
install the anti-rotation bolt may result in the fairing rotating while
the boat is underway. The effect may be violent movement and
loss of steering. This could result in serious injury or death to
passengers and/or damage to the boat or other property.
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.
Applications
Bronze housings recommended for fiberglass or wood hulls.
Caution: Never install a bronze housing in a metal hull because
electrolytic corrosion will occur.
Stainless steel housing is compatible with all hull materials.
• Aluminum or steel hull —Use a stainless steel housing to
prevent electrolytic corrosion.
Caution: Installation requires an Airmar fairing and an isolation
sleeve
.
•
Caution : Never install a metal housing in a vessel with a
positive ground system
.
Pretest
Connect the multisensor to the instrument and spin the
paddlewheel. Check for a speed reading (and the approximate air
temperature if applicable). If there is no reading or it is inaccurate,
return the instrument to the place of purchase.
Identify Your Model
The model name is printed on the cable tag.
Record the information found on the cable tag for future reference.
Part No._________________Date___________Frequency________kHz
B744V
B744V
Standard Fairing
Tools and Materials
Fairing ( mandatory for B744V, B744VL, SS544V )
Digital level
Safety goggles
Dust mask
Band saw
Rasp
Electric drill
Drill bit: 3mm
Hole saw: 51mm
Sandpaper
Mild household detergent
File (installation in a metal hull)
Marine sealant
Slip-joint pliers
Zip-ties
Water-based antifouling paint ( mandatory in salt water )
Installation in a cored fiberglass hull (see page 4):
Hole saw for hull interior: 60mm
Cylinder, wax, tape, and casting epoxy
or
bubble level & protractor (installation with fairing)
or
hand saw (installation with fairing)
or
power tool (installation with fairing)
or
1/8"
or
2"
or
weak solvent (alcohol)
or
2-3/8"
Mounting Location
Acoustic Noise
Acoustic noise is always present and these sound waves can
interfere with the operation of the transducer. Background noise
from sources such as: waves, fish, and other vessels cannot be
controlled. However, carefully selecting the multisensor’s
mounting location can minimize the affect of vessel generated
noise from the propeller(s) and shaft(s), other machinery, and
other echosounders. The lower the noise level, the higher the
echosounder gain setting that can be used.
Placement
Choose a location where:
• The water flowing across the hull is smoothest with a minimum
of turbulence and bubbles (especially at high speeds).
• The multisensor will be continuously immersed in water.
• There is a minimum deadrise angle.
• The transducer beam will be unobstructed by the keel or
propeller shaft(s).
• There is adequate headroom inside the vessel for the height of
the housing, tightening the nuts, and removing the valve
assembly and insert.
Caution : Do not mount the multisensor:
Near water intake or discharge openings
Behind strakes, fittings, or hull irregularities
Behind eroding paint (an indication of turbulence)
•
AIRMAR
®
LWL
(Load Waterline Length)
outboard and I/O
step-hull
1/3 aft
displacement hull
planing hulls
fin keel sailboat
pressure waves
150– 300 mm
(6– 12")
inboard
About Fairings
Nearly all vessels have some deadrise angle at the mounting location. If
the multisensor is mounted directly to the hull, the sound beam will be
tilted off the vertical at the same angle as the deadrise. A fairing is
strongly recommended if the deadrise angle exceeds 10 ° (see Figure 2).
• Increases the sealing surface around the drilled hole to prevent
water from leaking into the hull.
•Orients the sound beam straight down by mounting the multisensor
parallel to the water surface
• Minimizes aerated water flowing over the transducer’s face by
mounting it deeper in the water
• High-performance fairing has a long streamlined shape for
excellent performance above 15 knots (see Replacement Parts on
page 6).
Airmar Polymer Fairing
Made of a high impact polymer with an integrated cutting guide, an
Airmar fairing is safer and easier to cut with a band saw and shape
with hand tools than custom fairings. It can be shaped to
accommodate a deadrise angle of up to 25 ° . (For fairing part numbers,
see “Replacement Parts” on page 6.)
A backing block is used inside the hull to provide a level surface for the
hull nut to seat against (see Figure 2). It is fabricated matching the
interior deadrise angle of the boat. After cutting an Airmar fairing, use
the remaining section with the cutting guide as the backing block.
full keel sailboat
Figure 1.
Best location for the multisensor
Boat Types (see Figure 1)
Displacement hull powerboat —Locate 1/3 aft LWL and
150–300mm (6–12") off the centerline on the side of the
hull where the propeller is moving downward.
• Planing hull powerboat —Mount well aft near the centerline
and
well inboard of the first set of lifting strake
s to insure that
it is in contact with the water at high speeds. Mount on the
side of the hull where the propeller is moving downward.
Outboard and I/O —Mount forward and to the side of the
engine(s).
Inboard —Mount well ahead of the propeller(s) and shaft(s).
Step-hul l—Mount just ahead of the first step.
Boats capable of speeds above 25kn (29MPH)—Review
multisensor location and operating results of similar boats
before proceeding.
• Fin keel sailboats —Mount to the side of the centerline
and forward of the fin keel 300–600mm (1–2').
• Full keel sailboats —Locate amidships and away from the
keel at the point of minimum deadrise angle.
Headroom
Allow adequate headroom inside the vessel for the height of
the housing, tightening the nuts and removing the insert.
Model
B744V — 255mm (10")
B744VL — 381mm (15")
B66V 270mm (10
B66VL 394mm (15
SS544V — 230mm (9")
2
Min. no fairing Min. with fairing
5
⁄
") 255mm (10")
8
1
2
⁄
") 381mm (15")
Installation
(for Standard Fairing Only)
WARNING : B744V, B744VL, and SS544V with a high-performance
fairing must be installed following the supplemental instructions that
came with your high-performance fairing. The high-performance fairing
requires an anti-rotation bolt. Failure to install the anti-rotation bolt may
result in the fairing rotating while the boat is underway. The effect may
be violent movement and loss of steering. This could result in serious
injury or death to passengers and/or damage to the boat or other
property.
WARNING : B744V and B744VL
must be installed with a fairing
(standard or high-performance). If it is installed without a
fairing, there is insufficient surface area to seal the sensor to
the hull. Water may leak into the hull causing damage to the
boat or possibly sinking.
CORED FIBERGLASS HULL —Follow separate instructions on page 4.
Hole Drilling
Warning : Always wear safety goggles and a dust mask.
1. Drill a 3mm or 1/8" pilot hole perpendicular to the waterline from
inside the hull (see Figure 3). If there is a rib, strut, or other hull
irregularity near the selected mounting location, drill from the outside.
If the pilot hole is drilled in the wrong location, drill a second hole in
a better location. Apply masking tape to the outside of the hull over
the incorrect hole and fill it with epoxy.
2. Using the 51mm
sure
to hold the drill plumb, so the hole will be perpendicular to the
water surface.
3. Sand and clean the area around the hole, inside and outside, to
ensure that the sealant will adhere properly to the hull. If there is any
petroleum residue inside the hull, remove it with either mild household
detergent or a weak solvent (alcohol) before sanding.
Metal hull —Remove all burrs with a file and sandpaper.
or
2" hole saw, cut a hole from outside the hull.
Be
Loading...