6
FUEL 3100 / DIESEL 3200
Installation and Operation Manual
NAVMAN
This manual describes two different Navman
marine fuel instruments:
• The FUEL 3100, which is installed with the
separate petrol/ gasoline flow sensor kit,
and measures petrol consumption.
• The DIESEL 3200, which is installed with
the separate diesel flow sensor kit, and
measures diesel consumption.
This manual describes how to install, set up and
operate the instruments. For more information,
refer to the separate
Flow Sensor Installation
Manual
(for the FUEL 3100 and petrol systems)
and
Diesel Flow Sensor Installation and
Operation Manual
(for the DIESEL 3200 and
diesel systems); this manual has extensive
information on understanding and optimising
your diesel boat’s performance.
The FUEL 3100 or DIESEL 3200 measures and
displays the fuel flow in real time for a single or
twin engine boat. It can calculate and display
the amount of fuel used, the amount of fuel
remaining and the fuel flow rate.
If an optional speed sensor or speed
instrument is connected, the unit can also
1 Introduction
show the fuel economy, boat speed and the
trip log and total logs.
Knowing the fuel economy can help determine
the optimum throttle settings and maximize
fuel savings. With twin engine boats,
comparison between the flow rates of each
engine can be used to achieve maximum
synchronisation.
It is essential to update the fuel readings in
the FUEL 3100 or DIESEL 3200 after a partial or
full refill, or after manually removing fuel, to
maintain accurate readings (see section 5).
The FUEL 3100 and DIESEL 3200 are 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 or NMEA, to
form an integrated data system for a boat.
Information in this manual applies to both the
FUEL 3100 and the DIESEL 3200 unless noted. It
is vital to read this document and the Navman
instrument’s installation and operation manual
before installing or using this kit.
Power supply
Sensor wiring
Connection to other
instruments (optional)
Petrol tank
Diesel tank
Diesel engine
Tachometer pickup
Power supply
Sensor wiring
Connection to other
instruments (optional)
Diesel flow
sensor
Diesel flow
sensor
Petrol flow sensor
Petrol engine
1-1 Typical Installations
FUEL 3100 System
DIESEL 3200 System
In a twin engine system, each
engine has its own sensor(s)
