Carefullyinserttheoptionunitintotheslotintheinverter.Makesure thattheconnectorisseatedfirmly.(WheninstallingtheFR-A7ARE kitinsertthesuppliedinsulationfilmunderneaththeoptionunit–see thesecondillustrationbelow.) Fastentheoptionunitwiththetworetainingscrews. RemovethePUconnectorcoverfromthesuppliedoptionunitcover plate.TakethePUconnectorcoveryouremovedfromtheinverterin stepandinsertitintheoptionunitcoverplate. Wiretheoptionunitandinstalltheoptionunitcoverplate.(Seealso step.) DANGER Spacer