Runco Rs 900 Projector User Manual

							Installation
Runco RS-900 Owner’s Operating Manual 17 
PREL
IMINARY
3.3 
Installation 
Considerations
Proper installation of your projector will ensure the quality of your display. Whether you are 
installing a projector temporarily or permanently, you should take the following into 
account to ensure your projector performs optimally.
Installation TypeChoose the installation type that best suits your needs: front or rear screen, floor mount or 
inverted mount. 
Table 3-2 compares these various installation methods. 
Ambient LightIn general, minimize or eliminate light sources directed at the screen. Contrast ratio in your 
images will be noticeably reduced if light directly strikes the screen, such as when a shaft 
of light from a window or floodlight falls on the image. Images may then appear washed 
out and less vibrant.
Table 3-2. Projector Installation Options
AdvantagesConsiderations
Front Screen, Floor Mount Installation

 changed quickly


Front Screen, Inverted Mount (ceiling) Installation





Rear Screen, Floor Mount Installation


t light rejection


Rear Screen, Inverted Mount (ceiling) Installation

t light rejection


Rear Screen, Floor Mount with Mirror

t light rejection

other rear screen installations

 
						

							Installation
18 Runco RS-900 Owner’s Operating Manual
PREL
IMINARY
Throw DistanceThrow distance is the distance measured from the front of the projector to the screen. 
This is an important calculation in any projector installation as it determines whether or not 
you have enough room to install your projector with a desired screen size and if your 
image will be the right size for your screen.
You can quickly estimate the throw distance by taking the width of the screen and 
multiplying it by the lens throw ratio; see 
Figure 3-1. The result of this calculation tells you 
roughly how far back the projector should be positioned from the screen in order to 
project a focused image large enough to fill the screen.
Figure 3-1. Estimating Throw Distance
Table 3-3 gives the throw ratios for the RS-900, RS-900/CineWide and RS-900/CineWide 
with AutoScope. 
➤
Table 3-3. Throw Ratios for the RS-900 Series 
Projector Model
Throw 
Ratio with 
Primary 
Lens Only
Throw Range in 
inches, with 
72.6x40.8-inch 
(1.78:1) ScreenThrow Ratio 
with 
Primary 
Lens and 
Anamorphic 
LensThrow Range in 
inches, with 
96x40.8-inch (2.35:1) 
Screen
MinimumMaximumMinimumMaximum
RS-9001.87 – 2.20135.76159.72(n/a)
RS-900/CineWide 
(Whitney Lens)(n/a)1.87 – 2.20179.52211.20
RS-900/CineWide 
(Rainier
 II Lens)(n/a)1.52 – 1.69145.92162.24
RS-900/CineWide 
with AutoScope 
(Rainier
 II Lens)
1.87 – 2.20135.76159.721.52 – 1.69145.92162.24
RS-900/CineWide 
with AutoScope 
(McKinley Lens)
1.87 – 2.20135.76159.721.40 – 1.65134.40158.40
Estimating Throw Distance
Throw Distance (TD)  = Screen Width (w)  x  Lens Throw Ratio
Screen width (w)
TD 
						

							Installation
Runco RS-900 Owner’s Operating Manual 19 
PREL
IMINARY
Vertical and Horizontal 
Position 
Proper placement of the projector relative to the screen will yield a rectangular, 
perfectly-centered image that completely fills the screen.
Ideally, the projector should be positioned perpendicular to the screen and in such a way 
that the lens center and screen center are aligned with each other, as shown in 
Figure 3-2.
Figure 3-2. Projector Placement
Height
Projection DistanceCeiling
Ceiling Installation
Screen
Height 
Floor Lens Center
Projection Distance
Floor Installation
Lens Center
x
Lens Center
x
ScreenLens Center 
						

							Installation
20 Runco RS-900 Owner’s Operating Manual
PREL
IMINARY
Vertical Lens ShiftIf it is not possible to align the projector and screen as shown in Figure 3-2, you can use 
the lens shift (LENS) controls on the projector remote to center the image on the screen. 
Vertical lens shift is generally expressed as a percentage of the screen height, as shown in 
Figure 3-3.
Figure 3-3. Vertical Lens Shift (Example Only)
The RS-900 provides up to 40% of vertical lens shift above and up to 60% of 
vertical lens shift below the screen center. For example, with a 100 x 56-inch (16:9) 
screen, you can shift the image up to 22.40 inches (0.57
 meters) above or 33.60 inches 
(0.85
 meters) below the screen center.
➤
1. With no vertical lens shift, the lens center and screen center are 
aligned with each other.
2. Vertical lens shift figures are for ceiling mount 
configurations. 
 For floor installations (where the projector is 
upright), reverse the up/down vertical lens shift percentages. 
Base plate
to lens center =
approx. 5-6 (depending
on the amount of lens shift)
50% Height
Lens Shift 
(0.5 x H)
100% Height
Lens Shift
(1.0 x H)
Screen Center0%
Note: This is a general example of lens shift. Lenses vary in their shift capabilities. No particular 
lens or projector is used in this example.
Note 
						

							Installation
Runco RS-900 Owner’s Operating Manual 21 
PREL
IMINARY
Folded OpticsIn rear-screen applications where space behind the projector is limited, a mirror may be 
used to fold the optical path, as shown in 
Figure 3-4. The position of the projector and 
mirror must be accurately set. If you are considering this type of installation, contact your 
dealer for assistance.
Figure 3-4. Folded Optics
Other ConsiderationsOther considerations and tips that can help improve your installation:
 Keep the ambient temperature constant and below 35°C (95°F). Keep the projector 
away from heating and/or air conditioning vents. Changes in temperature may cause 
drifts in the projector circuitry, which may affect performance.
 Keep the projector away from devices that radiate electromagnetic energy such as 
motors and transformers. Common sources of these include slide projectors, 
speakers, power amplifiers and elevators. 
3.4 
Installing the Optional 
CineWide/AutoScope 
Lens Mount
If you are installing a standard (non-CineWide) RS-900, skip this step and proceed with 
Mounting the RS-900 (page 28). 
If you are installing an RS-900/CineWide with a prismatic (Whitney) anamorphic lens, 
proceed with 
Installing the Fixed CineWide Base Plate (RS-900/CineWide, 
Prismatic Lens) (page 25).
If you are installing an RS-900/CineWide with a cylindrical (Rainier II or McKinley) 
anamorphic lens, proceed with 
Installing the Fixed CineWide Base Plate 
(RS-900/CineWide, Cylindrical Lens) (page 26). 
If you are installing a RS-900/CineWide with AutoScope, proceed as follows to install the 
AutoScope lens motor. 
Screen
Mirror
1. Do not install the CineWide lens yet, only the fixed CineWide 
base plate or AutoScope lens motor. You will install the CineWide 
lens after you install the projector and adjust the primary lens. 
2. Some components shipped with your projector may differ slightly 
from what is shown in these instructions. 
Note 
						

							Installation
22 Runco RS-900 Owner’s Operating Manual
PREL
IMINARY
Installing the AutoScope 
Lens Motor 
(RS-900/CineWide with 
AutoScope) 
Figure 3-5 shows the RS-900/CineWide with AutoScope motor assembly. 
Figure 3-5. RS-900/CineWide with AutoScope Motor Assembly – Exploded View
Remove Projector Front Height Adjusters: 
Place the projector upside down on a blanket 
or other soft surface. Then, remove the two 
height adjusters at the front of the projector by 
turning them counterclockwise until they come 
out. 
 
➤
4
5
Screw, Phillips 
Pan-Head,
10-32 x 1/2” 
(4x)1 AutoScope Lens Motor
2 Screw, Phillips Flat-Head,
10-32 x 1/4” (2x)3 CineWide with AutoScope
Ceiling Mount Adapter/
Projector Stand, RightCineWide with
AutoScope
Ceiling Mount Adapter/
Projector Stand, Left
7 Nylon Spacer, 
5/8” diameter x 
3/16” high (4x)6
Screw, Phillips 
Flat-Head, 
Undercut,
M6 x 12mm 
(4x) 
						

							Installation
Runco RS-900 Owner’s Operating Manual 23 
PREL
IMINARY
Install Ceiling Mount Adapters/Projector Stands: For ceiling installations, these 
brackets bring the mounting points for the projector mounting rails (included with the 
projector ceiling mount kit) from the bottom of the projector up and around the AutoScope 
lens motor housing. For floor installations (where the projector is upright), the adapters 
allow the projector to lie flat on the mounting surface.
Using the four (4), supplied M6 x 12mm Flat-Head Phillips screws (item #6), attach the 
AutoScope Ceiling Mount Adapters/Projector Stands (items #4 and
 #5) to the projector as 
shown in 
Figure 3-6. 
Figure 3-6. RS-900 with Ceiling Mount Adapters/Projector Stands
DO NOT OVER-TIGHTEN THE SCREWS. Caution 
						

							Installation
24 Runco RS-900 Owner’s Operating Manual
PREL
IMINARY
Install Lens Motor: 
1. Position the AutoScope Lens Motor (item #2) as shown in Figure 3-7. 
2. Line up the mounting holes on the lens motor housing with those on the underside of 
the projector. 
3. Secure the motor to the projector with the four (4), supplied 10-32 x 1/2” Pan-Head 
Phillips screws (item
 #1) and nylon spacers (item #7). 
4. Secure the AutoScope Ceiling Mount Adapters/Projector Stands to the motor using 
the two (2), supplied 10-32 x 1/4” Flat-Head Phillips screws (item #3). 
Figure 3-7. AutoScope Lens Motor Installation
After you have installed the AutoScope lens motor, proceed with Mounting the RS-900 
on page 28.  
						

							Installation
Runco RS-900 Owner’s Operating Manual 25 
PREL
IMINARY
Installing the Fixed 
CineWide Base Plate 
(RS-900/CineWide, 
Prismatic Lens)
To install the fixed CineWide base plate on a RS-900/CineWide with a prismatic 
anamorphic lens:
1. Place the projector upside down on a blanket or other soft surface. 
2.If you are mounting the RS-900/CineWide on a ceiling: Line up the four holes on 
the projector ceiling mounting plate (included with the projector ceiling mount kit) with 
those on the bottom of the projector. 
3. Line up the two mounting holes on the CineWide base plate with those on the bottom 
of the projector (and at the front of the ceiling mount plate, if present).
4. Secure the CineWide base plate (and ceiling mounting plate, if needed) to the 
projector with the M6x12mm screws and washers provided with the CineWide lens 
base plate. See Figure 3-8. 
Figure 3-8. RS-900/CineWide with Whitney (Prismatic) Lens Base Plate and 
Ceiling Mounting Plate - Bottom View
1. Do not use the mounting screws provided with the ceiling 
mounting plate. Use only the hardware provided with the 
CineWide lens base plate. 
2. DO NOT OVER-TIGHTEN THE SCREWS. 
Caution
Washers under
Lens Base Plate
(2 places)Washers between
Lens Base Plate and
Ceiling Mounting Plate
(2 places)
RS-900/CineWide with Lens Base Plate RS-900/CineWide with Lens Base Plate 
and Ceiling Mounting Plate 
						

							Installation
26 Runco RS-900 Owner’s Operating Manual
PREL
IMINARY
Installing the Fixed 
CineWide Base Plate 
(RS-900/CineWide, 
Cylindrical Lens) 
Figure 3-9 shows the RS-900/CineWide cylindrical (Rainier II/McKinley) lens base plate 
assembly.  
Figure 3-9. RS-900/CineWide with Rainier II/McKinley (Cylindrical) Lens Base 
Plate and Ceiling Mounting Plate - Exploded View
➤
Ceiling Mount
Plate (part of 
Ceiling Mount
Kit)
Anamorphic Lens
Base Plate
Nylon Spacer,
5/8” diameter x
3/16” high (4x) Screw,
Phillips 
Pan-Head,
M6 x 1.0 x 
12mm (4x)
1
2
3