9Quadra-Fire • QFI30FB-IFT, QFI35FB-IFT Installation Manual • 2555-980 Rev. C • 9/184 Fireplace Size RequirementsA. Minimum Fireplace OpeningMinimum fireplace opening requirements are shown inFigure 4.2.WARNING! Risk of Fire or Burns! Provide adequateclearance around air openings and for service access.Due to high temperatures, the appliance should be locat-ed out of traffic and away from furniture and draperies.• The firebrick (refractory), glass doors, screen rails, screenmesh and log grates can be removed from a factorybuilt firebox in order to gain minimum gas insert openingrequirements.• Any smoke shelves, shields and baffles may be removedfrom the factory built firebox if attached with mechanicalfasteners.• The appliance may not be placed directly on the baseof the outer wrap, a 1/4 in. airspace MUST be providedbetween the insert and the floor of the outer wrap. Usethe levelling legs to raise the insert a minimum of 1/4in.. The original fireplace may never be returned to solidfuel in this condition. The sidewalls and top structureof the firebox may not be altered with the exception ofremovable baffles and dampers.1/2 IN. MINIMUM LEVELING HEIGHTRECOMMENDED - 1/4 IN. REQUIRED12 IN.5 IN.6 IN.11-1/4IN.TOP VIEWSIDE VIEWEXISTING FACTORY-BUILT FIREBOXQFI30FB-IFTQFI35FB-IFTMETAL FLOOR OF EXISTING FACTORY-BUILT FIREBOXTHIS SECTION OFMETAL FLOORHAS BEEN REMOVEDMETAL FLOOR OF EXISTINGFACTORY-BUILT FIREPLACEREMOVE THISSECTION OFMETAL FLOOR5 IN.11-1/4IN.6 IN.12 IN.Figure 4.1-A Figure 4.1-B• The metal floor of the factory-built fireplace may beremoved to facilitate the installation of the insert.• Cutting of any sheet metal parts of the fireplace in whichthe gas fireplace insert is to be installed is prohibited,except the floor as tested for and as noted above and inFigure 4.1-B.• A minimum 1/2 in. gap from the bottom of theappliance to the metal floor of the factory-built fireboxis RECOMMENDED for optimal fan performance. Seeside view in Figure 4.1-A.• If the recommended 1/2 in. leveling leg height can not beachieved, a section of the factory-built metal floor maybe removed. See Figure 4.1-B and see Section 10.A forclearance under appliance.Note: The metal warning plate, noting that the factory-builtfireplace has been converted for use with a gas fireplaceinsert, must be affixed to the appliance. It is included inthe manual bag assembly.