17FUEL 3100 / DIESEL 3200 Installation and Operation Manual NAVMANWarnings1. The display unit is waterproof from thefront. Protect the rear from water, otherwisewater might enter the breathing hole anddamage the display unit. The warranty doesnot cover damage caused by moisture orwater entering the back of the display unit.2. Ensure that any holes cut for theinstallation will not weaken the boat’sstructure. If in doubt, consult a qualified boatbuilder.50 mm (2") minimumclearance for cables20 mm (0.75")maximum thicknessFixing nutFixing hole50 mm (2")Side view of display unit mounting4-2 The display unit1 Choose a location for the display unit that:• is easily seen and protected fromdamage• is at least 100 mm (4") from a compassand at least 500 mm (19.5") from a radioor radar antenna• is away from engines, fluorescent lights,power inverters and radio or radartransmitters• is accessible from the back; a minimumclearance of 50 mm (2") is required atthe back (see mounting diagram)• protects the back of the unit frommoisture and water.2 The unit must be mounted on a flat panelless than 20 mm (0.75") thick. Stick themounting template in place. Drill a 50 mm(2") fixing hole through the centre holein the template. Note that the templateallows space around the display unit for theprotective cover.3 Remove the fixing nut from the back ofthe display unit. Insert the stud at the backof the display unit through the mountinghole. Hand tighten the fixing nut.4-3 The fuel flow sensor(s)Install the fuel flow sensor(s) following theinstructions in the manual supplied with thepetrol fuel or diesel flow sensor(s). Note thewarning about fuel types in appendix B.FUEL 3100: Plug the sensor cable into theFUEL 3100 cable with a white connector and doup the locking collar. For a twin engine or twintank boat, follow the instructions in the FuelSensor Installation Manual.DIESEL 3200: Connect the white sensorcable to the DIESEL 3200. For a twin engineinstallation install the white T connector andthen connect the sensor cables to this.4-4 The speed sensor (optional)If required, install the optional paddlewheelspeed sensor following the instructions inthe manual supplied with the sensor. Plug thesensor cable into the FUEL 3100 cable with ablue connector and do up the locking collar.If a NavBus or NMEA speed source is used,connect it to the power/data cable (see nextpage).