122. Installation and ConnectionsWARNING* Installing your projector on the ceiling must be doneby a qualified technician. Contact your NEC dealerfor more information.* Do not attempt to install the projector yourself.• Only use your projector on a solid, level surface. If theprojector falls to the ground, you can be injured andthe projector severely damaged.• Do not use the projector where temperatures varygreatly. The projector must be used at temperaturesbetween 41˚F (5˚C) and 104˚F (40˚C) (Eco modeselected automatically at 95˚F to 104˚F/35˚C to 40˚C).• Do not expose the projector to moisture, dust, orsmoke. This will harm the screen image.• Ensure that you have adequate ventilation around yourprojector so heat can dissipate. Do not cover the ventson the side or the front of the projector.Reflecting the ImageUsing a mirror to reflect your projector’s image enablesyou to enjoy a much larger image when a smaller spaceis required. Contact your NEC dealer if you need a mirrorsystem. If you're using a mirror system and your imageis inverted, use the MENU and SELECT buttons on yourprojector cabinet or your remote control to correct theorientation. (→ page 45)VT49Screen Size αDiagonalinch2530406072808490100120150180200210240270300mm635762101615241829203221342286254030483810457250805334609668587620inch20243248586467728096120144160168192216240mm50861081312191463162617071829203224383048365840644267487754866096inch1518243643485054607290108120126144162180mm3814576109141097121912801372152418292286274330483200365841154572DCBinch5691315171819212632384345515764mm14016022032039043045049054065081097010801140130014601620inch35425786103115121129144173217260289304347391434mm89010701440218026202920306032903650439055006610734077108820993011030inch-2-3-3-5-6-7-7-8-9-10-13-16-17-18-21-24-26mm-60-70-90-130-160-180-190-200-220-270-330-400-440-460-530-600-660degree8.78.68.58.58.48.48.48.48.48.48.48.48.48.48.48.48.4Width Height