E - 1710. STANDARD AND OPTONAL FILTERS10-1 The indoor unit of the split air conditioner is factory supplied withstandard anti-bacteria filters to eliminate dust and lint.10-2 The optional set of air filters can be field installed inside the indoor unit.The optional set of air filters consists of 2 ( two ) filters:1. Optional Active carbon air filter is particularly effective in eliminating odor.2. Optional Photo-catalytic air filter effectively eliminates cigarette smoke in the room air.10-3 Installation steps of optional set of air filtersStep (1): After opening return air grill, pull the standard air filters.Step (2): Install optional air filters inside the unit top in the guides specified for filtersthen install standard filters.Step (3): Install return air grille and close it downwards.Standard Air FiltersAnti-bacteriaOptionActive carbonair filter( Black )OptionPhoto catalyticair filter( Blue )Optional Air Filters