Navman FUEL 3100 User manual

NAVMAN
Installation and
Operation Manual
www.navman.com
FUEL 3100

3
FUEL 3100 Installation and Operation Manual NAVMAN
FCC Statement
Note: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a normal installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an output on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced technician for help.
A shielded cable must be used when connecting a peripheral to the serial ports.
Important
It is the owner’s sole responsibility to install and use the instrument and transducer(s) in a manner that will
not cause accidents, personal injury or property damage. The user of this product is solely responsible for
observing safe boating practices.
The NAVMAN fuel flow transducers have been specifically developed for use in marine applications with
gasoline inboard and outboard engines and are not warranted for any other type of application. NAVMAN
fuel flow transducers must NOT be used with diesel engines.
Warning
This fuel flow transducer will create additional back pressure in a fuel system of 1/2" of mercury at 19.8 US
gallons/hour(75litres/hour)consumption and1"ofmercurywitha39.5US gallonsperhour(150 litres/hour)
consumption. It is the owners responsibility to ensure that fitting of this fuel flow transducer does not cause
fuel starvation which may lead to poor engine performance.
NAVMAN NZ LIMITED DISCLAIMS ALL LIABILITY FORANY USE OF THIS PRODUCT INAWAY THAT
MAYCAUSEACCIDENTS, DAMAGE OR THAT MAY VIOLATE THE LAW.
This manual represents the FUEL3100 as at the time of printing. Navman NZ Limited reserves the right to
make changes to specifications without notice.
Governing Language: This statement, any instruction manuals, user guides and other information relating
to the product (Documentation) may be translated to, or has been translated from, another language
(Translation).IntheeventofanyconflictbetweenanyTranslationoftheDocumentation,theEnglishlanguage
version of the Documentation will be the official version of the Documentation.
Copyright©2003NavmanNZLimited,NewZealand.Allrightsreserved. NAVMANisaregisteredtrademark
of Navman NZ Limited.
Warnings
1.Everyefforthasbeenmadeby themanufacturerto ensurethatthe materialsusedinthe NAVMAN fuel
flow transducer will operate reliably with different fuel mixtures. The manufacturer or its distributors can
notbeheld responsiblefor fuelformulation orany affect thismayhave onthe performanceand durability
of the fuel flow transducer.
2.NAVMANfuelflowtransducersmustNOTbeusedwithdieselengines.Refertotheseparateinstallation
instructions supplied with the fuel flow transducer for more information.

4NAVMAN FUEL 3100 Installation and Operation Manual
Contents
1 Introduction ..................................................................................................... 4
1-1How the fuel flowtransducerworks ............................................................................. 5
1-3Cleaningandmaintenance .......................................................................................... 5
2 Operation ......................................................................................................... 6
2-1 Turn on and off ............................................................................................................ 6
2-2The keys...................................................................................................................... 6
2-3TheBacklightlevel....................................................................................................... 6
2-4Low FuelAlarm ............................................................................................................ 6
2-5BatteryAlarm ...............................................................................................................6
2-6Simulationmode .......................................................................................................... 6
2-7KeyReference............................................................................................................. 7
3 The Main Display ............................................................................................. 8
3-1Fuel data ..................................................................................................................... 8
3-2Speed data ..................................................................................................................8
3-3Changing dataquickly ................................................................................................. 8
3-4Port andStarboarddataoptions................................................................................... 9
4 The Setup Menus .......................................................................................... 10
4-1Entering setupmode ................................................................................................. 10
4-2Changing asetting..................................................................................................... 10
4-3Fuelsetup (FUEL) ..................................................................................................... 10
4-4Speed setup(SPEEd) ............................................................................................... 12
4-5Backlight setup (LAmP) ............................................................................................. 14
4-6Alarmssetup(ALArm) ............................................................................................... 14
4-7Unitssetup (UnItS).................................................................................................... 14
5 Installation ..................................................................................................... 15
5-1Whatcomes with the FUEL 3100? ............................................................................ 15
5-2Tank/ EngineConfigurations ..................................................................................... 16
5-3Installingthedisplayunit............................................................................................ 16
5-4Installingthe FuelFlowTransducer ........................................................................... 17
5-5Powerand Wiring ...................................................................................................... 17
5-6Testingthe installation ............................................................................................... 18
5-7Resetting to factorydefaults ...................................................................................... 18
Appendix A - Specifications ............................................................................ 19
Appendix B - Troubleshooting ........................................................................ 20
Appendix C - How to contact us ..................................................................... 21
Units
This unit is set up with default units of US Gallons, knots and nautical miles.
Please refer to section 4-7 Units setup, to change the units.

5
FUEL 3100 Installation and Operation Manual NAVMAN
1 Introduction 1-1 How the fuel flow transducer
works
The fuel flow transducer is inserted into the fuel line
betweenthefueltankandtheengine.Asmallturbine
inside the fuel flow transducer measures the rate of
the fuel flow into the engine. This information is
relayed through the fuel flow transducer cable and
shown electronically on the display unit.
1-2 Cleaning and maintenance
Calibration of the FUEL 3100 after installation is
essential toprovidethe bestpossible performance.
Re-calibration of the FUEL 3100 is recommended
afterthefirst100 enginehoursto allowmovingparts
to ‘wear in’.
Clean the display unit and any plastic transducers
with a damp cloth or mild detergent.Avoid abrasive
cleaners, petrol or other solvents.
PuttheprotectivecoverovertheFUEL3100whenit
is not being used.
CongratulationsonchoosingaNAVMANFUEL3100.
For maximum benefit, please read this manual
carefully before installation and use.
TheFUEL3100 measuresanddisplays thefuelflow
in real time for a single or twin engine boat. It can
calculate and display the:
amount of fuel used
amount of fuel remaining
fuel flow rate
There are also Low Fuel and Battery alarms. With
twin engine boats, the FUEL 3100 allows
comparision between the flow rates of each engine
to achieve maximum synchronisation.
Iftheoptionalspeed transducerisconnected (orany
other instrument that reads speed data, such as the
SPEED 3100) the FUEL 3100 can also show the:
fuel economy
boat speed
trip log and total log
Knowing the fuel economy can help determine the
optimum throttle settings and maximise on fuel
savings.
Note that it is essential to update the fuel readings
in the FUEL 3100 after a partial or full refill, or after
manually removing fuel, to maintain accurate
electronic readouts.
The FUEL 3100 can also be customized with the
Setup menus to suit your boat and preferences.
An installed FUEL3100 usually has two parts:
the display unit.
the fuel flow transducer, which is connected to
the fuel line and wired to the display unit. (A
twin engine installation will need an extra fuel
flow transducer.)
The FUEL 3100 is powered from the boat’s main
power supply.
The FUEL 3100 is part of the NAVMAN family of
instruments for boats, which includes instruments
for speed, depth, wind, and repeaters. These
instruments can be connected together, using
NavBus,toformanintegrateddatasystemforaboat.
The FUEL 3100 can also send, share, and receive
NMEAdatafromNMEAcompliantinstruments.(See
section 5-5 Power and Wiring.)

6NAVMAN FUEL 3100 Installation and Operation Manual
2-1 Turn on and off
TurntheFUEL3100onandoffwiththeboatengine’s
ignition switch. The FUEL 3100 does not have its
ownpowerswitch.Whenitisturnedoff, anychanges
made to the settings are retained.
If SIM flashesat thebottom leftcornerofthe display,
the FUEL 3100 is in simulation mode (see section
2-6 Simulation mode).
2-2 The keys
The FUEL 3100 has four keys, labelled ESC, ENT,
and . In this manual:
Press means push the key for less than one
second.
Hold means hold the key down for two
seconds or more.
2-3 The Backlight level
Thereare five different backlight levels.See section
4-5 Backlight setup, for more information.
2-4 Fuel alarm
The FUEL 3100 can be set to sound an alarm when
thelevelon thefuel tankis belowthe setalarm level.
(see section 4-6 Low Fuel Alarm setup).
Whenthealarmsounds, theinternalbeepersounds,
the symbol,therelevantfuel gaugeonthe display
bothflashandanyexternalbeepersorlightsoperate.
Press ESC to mute the alarm.
2 Operation 2-5 Battery alarm
The FUEL 3100 can be set to sound an alarm when
the battery voltage is below the set alarm level. (see
section 4-6 BatteryAlarm setup).
Whenthealarmsounds, theinternalbeepersounds,
the symbol flashes and any external beepers or
lights operate.
Press ESC to mute the alarm.
2-6 Simulation mode
Simulation mode allows the user to become familiar
withtheFUEL3100offthewater.InSimulationmode,
theFUEL3100generatesdata internallyandignores
input from thetransducers. Theword SIM flashesat
the bottom left corner of the display.
To turn Simulation mode on or off:
1 Turn the power off.
2 Hold ESC while turning the power on.

7
FUEL 3100 Installation and Operation Manual NAVMAN
2-7 Key Reference
Special Modes
Power On + hold ESC Turn Simulation mode
On or OFF
Power On + hold ENT + Reset factory defaults
Main Display
Setup Menus
ENT + ESC for setup mode
Backlight Alarm Units
SpeedFuel
press for fuel
display options
press for speed
display options
LOG
TOTAL LOG
hours
RANGE
SPEED
press ENT once or
more for these
display options:
press ENT once
or more for these
display options:
PORT
STBD
TOTAL
PORT and STBD
PORT
STBD
TOTAL
Fortwinengineswithtwin tanks
For twin engines
REMAINING
USED
FLOW
ECONOMY
press
+
to fill tank
press
+ ENT
to reset
USED
FUEL (0.0 to 9999)
dUAL (OFF, ON)
SIZE (0 to 9999)
motor (1, 2)
CAL.F (0or 9999)
dAmP.F (1to 5)
CAL.L (0.0 to 9999)
InPUt (nO,GPS,
BUS,SEn)
dAmP.S (1to 5)
CAL.S (0.0 to 9999)
FUEL UnItS
(GAL US, GAL
ImP,LItrE)
dISt UnItS
(nAUt mILES,
StAt mILES)
or once or more, then ENT to select
LAMP (0to 4)
GrouP (0to 4)
or once or more,
then ENT to select
or to change a setting, ENT to confirm, then ESC for Setup Menu
or once or more, then ENT to select a setup menu
press
+ ENT
to reset
LOG
Note: hold
+ ENT for 5
secs resets
TOTAL LOG
or to choose
between Low Fuel
andbatteryalarms,
then ENT to select
press
+
to fill tank
hold +
ENTfor 5
secs resets
hours

8NAVMAN FUEL 3100 Installation and Operation Manual
3 The Main Display
3-3 Changing data quickly
Changing the fuel units:
Hold to change the units on the fuel data
option that is currently displayed (e.g., to
change between US gallons and litres). Note:
when “gal” is displayed, this could be US
gallons or imperial gallons. Check the units
menu to confirm and change if required. See
section 4-7 Units setup.
Changing the speed units:
Hold to change the units on the speed data
option that is currently displayed (e.g., to
change between nautical miles and statute
miles). The log units will change automatically
to correspond with the new speed units.
Resetting the trip log or total log:
When the desired log is displayed, hold and
ENT together to reset the reading to 0.0.
Refilling the fuel tank:
After refilling the fuel tank to maximum, press
and together while fuel remaining is
displayed sets REMAINING (fuel remaining) to
full. See section 4-3 Fuel setup for setting your
tank size.
Note: On boats with dual fuel tanks, check that
the tank displayed (PORT or STBD) is the tank
to be reset.
Note: This method is not recommended for
boats with underfloor fuel tanks. See section 4-
3 Fuel setup.
See section 4-7 Units setup, for more information
about customizing the FUEL 3100 to suit your boat
and preferences.
3-1 Fuel data
Thefueldatashowsone ofthefollowingfueloptions:
REMAINING (fuel remaining)
USED (fuel used)
FLOW (rate of fuel flow through the transducer)
ECONOMY (distancetravelled per unitof fuel used)
Press onceormoreto changethefueldataoption
thatiscurrently displayed(e.g., fromUSED toFLOW).
Ifyourboat hasportand starboardfueldataoptions,
pressENT tochange betweenthePORT,STBD, and
TOTAL fuel readouts on the main display.
3-2 Speed data
The speed data shows one of the following speed
options (if optional speed input is available):
LOG (trip distance)
TOTAL LOG (total distance)
hours (total engine hours)
RANGE (estimated distance that can be
travelled on the remaining fuel)
SPEED (boat speed)
Press once or more to change the speed data
option that is currently displayed (e.g., from SPEED
to LOG). Note: hours can be displayed with or
without speed input.
Warning
Fuel consumption can change drastically
depending upon the boat loading and the sea
conditions. Always carry adequate fuel for the
journey, plus a reserve.
Alarms symbol
shows either the Low
FuelAlarm and/or
Batteryis active.
Four keys (backlit)
Fuel data is shown in
the upper part of the
main display
Speed data is shown
in the lower part of
main display (if speed
input is available)
Fuel gauge shows
the fuel level in the
fuel tank(s).
Main Display
(backlit screen)

9
FUEL 3100 Installation and Operation Manual NAVMAN
3-4 Port and Starboard data options
Theportandstarboarddataoptionsavailabledepend
upon your boat configuration, as follows:
Single fuel tank / single engine / single fuel
transducer - no port and starboard data
options available.
Single fuel tank / twin engines / twin fuel
transducers - port and starboard readouts for
the fuel FLOW option only.
Twin fuel tanks / twin engines / twin fuel
transducers - port and starboard readouts for
all the fuel data options.
In addition, the fuel gauge splits into two columns;
the left column shows the fuel level in the port
fuel tank and the right column shows the fuel
level in the starboard fuel tank.
If your boat configuration can support
port and starboard readout capability,
see section 4-3 Fuel setup, to set it up.
Todisplaytheportorstarboardfueldata
ontheMain Display,selectthe required
fuel data option then press ENT to
change between the PORT, STBD and
TOTAL readouts.
Tochooseport orstarboarddataonthe
Fuel setup menu or Low Fuel Alarm setup menu,
selecttherequired optionandpressENT,thenpress
or to change between PORT and STBD. Press
ENT again to make changes.

10 NAVMAN FUEL 3100 Installation and Operation Manual
4 The Setup Menus It is essential to update this setting whenever any
fuel is added or removed. Otherwise, all the fuel
readings and the Low Fuel Alarm become
meaningless.
Quickrefill
To reset the fuel REMAINING
setting to the maximum tank
size, press and together.
Note: It is often very difficult to refill underfloor fuel
tanks to the same level twice, due to air pockets.
Becauseofthis,owners ofboats withunderfloor fuel
tanksarerecommendedtousethefollowingmethod
to update the setting.
1. Before doing a partial or full refill, or before
removing fuel from the fuel tank (e.g., by
siphoning it off): note the fuel REMAINING
reading.
2. Note how much fuel is added or removed.
3. Change the remaining fuel (FUEL) setting to
show how much fuel is now in the tank.
Setting number of fuel tanks (dUAL)
Select dUAL to set the number of fuel tanks.
Iftheboathastwinfueltanks,selectON automatically
activate the port and starboard data options.
If the boat has only one fuel tank, select OFF.
Setting fuel tank capacity (SIZE)
Select SIZE to specify the capacity of the fuel tank.
Onboatswithdual fueltanks,checkthat thefuel tank
displayed (PORT or STBD) is the fuel tank to be set.
Use the setup menus to customize the FUEL 3100
to suit your boat and preferences.
4-1 Entering setup mode
Press ESC and ENT together to enter setup mode.
Then press or once or more to show each of
the setup menus:
FUEL (Fuel) See section 4-3.
SPEEd (Speed) See section 4-4.
LAmP (Backlight) See section 4-5.
ALArm (Low Fuel and BatteryAlarm) See
section 4-6.
UnItS (Units) See section 4-7.
Press ENT to select a setup menu and show the
current setting.
4-2 Changing a setting
When the required setup menu is displayed, press
ENT. The current setting will blink on and off.
Increase or decrease the value of the setting by
pressing or . (Holding a key will change a
numeric setting more quickly.)
Press ENTtoconfirmthe newvalueorESC toreturn
to the previous setting without saving any changes.
4-3 Fuel setup (FUEL)
Use this to specify the settings for:
remaining fuel (FUEL)
number of fuel tanks (dUAL)
fuel tank capacity (SIZE)
number of engines (motor)
fuel calibration (CAL.F)
fuel flow transducer dampening (dAmP.F)
If your boat has port and starboard fuel data options,
pressENT,then press or tochangebetweenthe
PORT and STBD.PressENT again to make changes.
Setting remaining fuel (FUEL)
Select FUEL to update the setting for the remaining
fuel. On boats with dual fuel tanks, check that the
fuel tank displayed (PORT or STBD) is the fuel tank
to be reset.

11
FUEL 3100 Installation and Operation Manual NAVMAN
It is recomended that the fuel tank capacity is
measured by draining the fuel tank and then filling it
tocapacity.Afterfilling,note thethe readingfromthe
fuel dispenser’s guage.
Note: It is often very difficult to refill underfloor fuel
tanks to the same level twice, due to air pockets.
Warning
Fuel consumption can change drastically
depending upon the boat loading and the sea
conditions. Always carry adequate fuel for the
journey, plus a reserve.
Setting number of engines (motor)
Select motor to specify the number of engines on
theboat.
Thereisachoiceof1or2.If2isspecified,theportand
starboardfuelFLOW optionsareautomaticallyactivated.
Fuelcalibration (CAL.F)
Select CAL.F to calibrate a fuel flow transducer.
Calibrating the fuel usage is essential for accurate
fuel measurements.
Twin engine installations require each fuel flow
transducer to be calibrated.This can be done at the
same time with two portable tanks, or at different
times using one portable tank.
Calibrating the fuel flow transducer(s) requires
accuratemeasurementofthefuel consumption.This
is best done using a small portable tank. At least 4
gallons (15 litres) of fuel should be used to ensure
anaccuratecalibration.Themorefuelused,themore
accurate the calibration.
To calibrate the fuel flow transducer:
1. Connect the portable tank(s) to the engine
through the fuel flow transducers.
2. Run the engine and display USED (fuel used)
on the Main Display.
3. Press ENT and . To reset the reading to 0.
4. Run the engine at normal cruising speed until
a known amount of fuel, at least 4 gallons (15
litres), has been used per engine.
5. The USED readout shows the apparent
amount of fuel used.
6. Select the FUEL setup menu, then press or
until CAL.F is displayed, then press ENT.
(On boats with dual fuel tanks, select the fuel
flow transducer to be calibrated: PORT or STBD
then press ENT.)
7. If the CAL.F readout does not match the
known amount of fuel used, alter the readout
to match the known amount by pressing ENT
then or . Once you have the correct value
displayed, press ENT to save the correct value.
(Otherwise, press ESC to exit.)
SettingFuelFlowTransducerDamping
(dAmP.F)
Select dAmP.F to average the fuel flow transducer
readoutoveraselectedtimeperiod.Thisisknownas
damping.Itavoidsrapidchangesinthefuel datathat
is displayed, e.g., as the boat travels across waves.
Choose between 1 to 99 seconds of damping.
Selecttherequireddampinglevel.Onesecondgives
themostsensitivereading,howevershowsthe most
fluctuations.