DUCTLESS CONVERSIONDuctless conversion is intended for applications where an exhaust duct work is not possible to beinstalled. When converted, the hood functions as a "purifying" hood rather than an exhaust hood.Fumes and exhaust from cooking is drawn and filtered by a set of optional Carbon Filters. The airis then purified and re-circulated back within the home.We recommend to ALWAYS exhaust air outside of the home by employing existing or installingnew duct work, if possible. The hood is most effective and efficient as an Exhaust unit. Only whenthe exhaust option is not possible should you recourse to converting the hood into a "purifying"unit.When converted to be a "purifying" unit, a set of Carbon Filters are required on top of its standardMetal Filter set. Order according to its Part number below. The standard Metal Filters are intendedto capture residue from cooking and the optional Carbon Filters help to purify fumes exhaustedfrom cooking for re-circulation.Carbon Filters (Required)DuctingHood Model: Part No. Filters in pkg.1. Purchase ductless Charcoal Filters as follow:2. Remove metal filters on hood.3. Install attachment bracket into metal filter.4. Clip carbon filter onto bracket.5. Re-install metal filters.6. Carbon Filters must be replaced afterevery 120 hours of use (or approximatelyevery 2 to 3 months based on the averageof 1-2hrs. of daily cooking time). Themicroprocessor in the controls when set,will count elapsed usage time and indicatewhen carbon filter replacement is requiredevery 120 hrs.ZTRE36S Z0F-C022 21. Refer Page 2&3 for ductless recirculating options.INSTALLATION 7ZRC-0080