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E 17
Ceiling Installation
Distance Chart
B = Vertical distance between lens center and screen
center
C = Throw distance
D = Vertical distance between lens center and screen
bottom (screen top for ceiling installation)
NOTE: Distances may vary +/5%.
10.5
10.3
10.1
10.1
10.0
10.0
10.0
10.0
9.9
9.9
9.9
9.8
9.8
9.8
9.8
Diagonal Width Height wide telephoto wide telephoto
B
C
Screen Size
D α
30
762
40
1016
60
1524
67
1701.8
72
1828.8
84
2133.6
90
2286
100
2540
120
3048
150
3810
180
4572
210
5334
240
6096
270
6858
300
7620
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
24
609.6
32
812.8
48
1219.2
53.6
1361.44
57.6
1463.04
67.2
1706.88
72
1828.8
80
2032
96
2438.4
120
3048
144
3657.6
168
4267.2
192
4876.8
216
5486.4
240
6096
18
457.2
24
609.6
36
914.4
40.2
1021.08
43.2
1097.28
50.4
1280.16
54
1371.6
60
1524
72
1828.8
90
2286
108
2743.2
126
3200.4
144
3657.6
162
4114.8
180
4572
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
7.7
194.6
10.2
259.5
15.3
389.2
17.1
434.7
18.4
467.1
21.5
544.9
23.0
583.9
25.5
648.7
30.6
778.5
38.3
973.1
46.0
1167.7
53.6
1362.3
61.3
1557.0
69.0
1751.6
76.6
1946.2
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
41.4
1052.6
56.3
1430.3
86.1
2185.8
96.5
2450.2
103.9
2639.0
121.7
3092.3
130.7
3318.9
145.5
3696.6
175.3
4452.1
219.9
5585.2
264.5
6718.4
309.1
7851.5
353.7
8984.7
398.3
10117.8
443.0
11251.0
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
50.8
1290.5
68.6
1743.7
104.3
2649.9
116.8
2967.1
125.7
3193.7
147.1
3737.4
157.8
4009.3
175.7
4462.4
211.4
5368.7
264.9
6728.0
318.4
8087.4
371.9
9446.8
425.4
10806.2
479.0
12165.5
532.5
13524.9
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
1.3
34.0
1.8
45.3
2.7
68.0
3.0
75.9
3.2
81.5
3.7
95.1
4.0
101.9
4.5
113.3
5.4
135.9
6.7
169.9
8.0
203.9
9.4
237.9
10.7
271.8
12.0
305.8
13.4
339.8
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
8.6
8.5
8.4
8.3
8.3
8.3
8.3
8.3
8.3
8.2
8.2
8.2
8.2
8.2
8.2
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
degree
If your projector is mounted on the ceiling and your image is upside down, use the Menu and Select buttons on your projector
cabinet or ▲▼ button on your remote control to correct the orientation. (See page E-36.)
Reflecting the Image
Using a mirror to reflect your projectors image enables you to enjoy a much larger image. Contact your NEC dealer if you need a
mirror. If youre using a mirror and your image is inverted, use the Menu and Select buttons on your projector cabinet or ▲▼ buttons
on your remote control to correct the orientation. (See page E-36.)
WARNING
Installing your projector on the ceiling must be done
by a qualified technician. Contact your NEC dealer
for more information.
* Do not attempt to install the projector yourself.
Only use your projector on a solid, level surface. If
the projector falls to the ground, you can be injured
and the projector severely damaged.
Do not use the projector where temperatures vary
greatly. The projector must be used at temperatures
between 32°F (0°C) and 95°F (35°C).
Do not expose the projector to moisture, dust, or
smoke. This will harm the screen image.
Ensure that you have adequate ventilation around
your projector so heat can dissipate. Do not cover
the vents on the side or the front of the projector.
Throw Angle (α)
Throw Distance (C)
2.9" (79.5mm)
Lens Center
Screen top
Screen center
Screen Bottom
D
B
Projector Foot
Projector Foot
Screen top
2.9" (79.5mm)
Lens Center
Screen center
Screen Bottom
Throw Distance (C)
Throw Angle (α)
B
D
17


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