FUEL PRO® 485TECHNICAL MANUAL®F1485 REV BT e c h n o l o g y , L L C6DAVCO Technology, LLC www davco com800-328-26111600 Woodland Drive, Saline, MI 48176-1629The Fuel Pro 120VAC overnight heater is installed in the sideof the Fuel Processor1 Open the vent cap Open the drain valve by turning one toone and a half revolutions Drain the Fuel Pro completelyClose the drain valve2 Remove the pipe plug from the heater port3 Apply liquid thread sealant to the heater threads andinstall into the 120VAC overnight heater port on theFuel Pro Tighten to 15-30 ft-lbs4 Connect the wire harness to the heater and route theharness to a location where it can easily be plugged intoa 120VAC outlet5 Prime the Fuel Pro and check for leaks120VAC OVERNIGHT HEATER INSTALLATIONWATER-IN-FUEL SENSOR (WIF) INSTALLATION1 Open the vent cap Open the drain valve by turning one toone and a half revolutions Drain the Fuel Pro completelyClose the drain valve2 Install WIF into WIF port Torque to 20-24 in-lbs3 Install the filter and prime the unit120VAC OvernightHeater PortWIF Port