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DreamVision UST25-4500HDi Manual

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INSTALLATION GUIDELINES
R699858 - UST25-4500HDi User Manual 7
2.3  Air-Flow and Space Requirements
Make sure that the unit is installed with at least 20cm of non-obstructed space on each side to allow a sufcient
air ow to the air inlets (A) and from the air outlets (B).
B
B
AB
A
A
AB
B
Air ow: air inlets (A) and air outlets (B)
2.4  Ceiling Mounting the Unit
When mounting of this unit is required, make use of four M4x4 screws at the bottom of this unit indicated by the
letter A. Keep at least 10 cm space gap between the bottom of this unit and the ceiling to allow sufcient air ow.
Precautions for Ceiling-mount
• To ceiling-mount this unit, special expertise and techniques are
necessary. Be sure to ask a specialist to perform mounting.
• Do not mount at places that may be subjected to vibrations.
• Depth of the mounting holes (A) is 12 mm. Use screws that would
insert at least 10mm into the mounting holes. Avoid too long screws
as they may damage inside this unit.
• Regardless whether the unit is still under guarantee, Dreamvision
is not liable for any product damage caused by mounting the unit with
third party ceiling mount or when the environment is not suitable for
ceiling-mount.
Dimensions
• Distances between left and right holes is D = 130 mm.
• Distances between front and back holes is d = 88 mm.
2.5  ProjectionDistanceandscreenO󰀨set
Projection Screen
Diagonal Size
(Aspect Ratio 16:9)
Projection
Screen
Base Size
Projection
Screen
Height H
Proj.
Distance
D1
Distance
D2
Offset
O1
Offset
O2
75” (190 cm) 65.4” (166 cm) 36.8” (93.5 cm) 41 cm 17 cm 19 cm 26 cm
80” (203 cm) 69.7” (177 cm) 39.2” (100 cm) 44 cm 20 cm 20 cm 27 cm
90” (228 cm) 78.4” (199 cm) 44.1” (112 cm) 49 cm 25 cm 22 cm 22 cm
100” (254 cm) 87.2” (221 cm) 49.0” (125 cm) 54 cm 30 cm 25 cm 32 cm
110” (279 cm) 95.9” (243 cm) 53.9” (137 cm) 60 cm 36 cm 27 cm 35 cm
• The projection screen sizes and projecting distances in the table above are provided only as a guide. Please
use them as reference during installation.
• The distances are calculated for a projection image of 16:9 aspect ratio
• The Throw Ratio is 0.25:1, calculated from the projection distance D1, this distance is the distance between
the projection beam window and the screen. You can use distance D2 between the projector and the wall
instead of D1 if needed.
d
D
A
A
A
A
… 7 …


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