Draper Video Projector User Manual

Copyright © 2007 Draper Inc.  Form Revelation220V_Inst07 

Print ed in U.S.A.

y = 15" + CL 

z = TD – y 

m = z + 8"

 

where: 

CL = centerline of lens to bottom feet

 

 

TD = throw distance

  Accuracy: 

± 

6"

= C

L

m

y

z

➀ Open carton and inspect for damage.

➁ Locate the following parts:
  A. The unit itself
 B. 

Controls

➀ Based on screen location and projector specifi cations, determine proper 
  position for projector installation. (First see "Choose a pro jec tor based 
  on its light path" on page 3. Then read "Where to install the
 Revelation" 

➁ Confi rm that there is at least 458mm available above the ceiling for Model 
  B or 347mm for Model A, if plenum housing is used. If no ple num, the 
 minimum 

clear 

ance is 331mm for both models.

➂ Arrange to provide service access to electrical control box and plenum 
 housing.
➃ If connecting duct work to the plenum housing, plan for position and length 
  of duct work. (See guidelines under "Installing the Plenum Kit" on 
 page 

➀ Read instructions completely before proceeding.

➁ Follow instructions carefully. Installation contrary to instructions 
 invalidates 

warranty.

➂ Take great care when handling both fi rst surface mirrors. They will 
  usually come covered with a protective fi lm. Remove this fi lm after 
  installation and prior to projecting images. If cleaning is nec es sary, do 
  so very lightly with glass cleaner and a soft, lint free cloth.  
➃ Do not obstruct operation of door with fi ngers or any object. Serious 
  injury or damage could result.
➄ The Revelation is not designed to act as a structural support of ceiling 
  framing. However, the trim frame is designed to support ceiling T-grid, 
  tiles and drywall. Equip ment should not be al lowed to rest on door 
  at any time. 
➅ Entire bottom of unit must be unobstructed to permit proper op er a tion. 
  Suffi cient clearance (432mm minimum) must be allowed below door.
➆ A minimum clearance of 458mm is required above ceiling level for 
  model B or 347mm for Model A, if plenum housing is used. If no ple num, 
  the minimum clear ance is 331mm for both models.
➇ Unit must be installed level (use a carpenter’s level).

➈ Unit operates on 220 V a.c. 60 hz. current.
Note: Unit has been thoroughly inspected and tested at factory and found 
to be operating properly prior to shipment.

 

 

 

 

To determine where to mount the Revelation, you need to know the fol low ing:
➀ The projector manufacturer’s rec om mend ed throw distance (TD). Typically,
  a minimum and maximum range is provided per screen size. Select a
  throw distance that is 6" greater than the minimum and 6" less than the 
  maximum stated. We recommend the average of the two numbers. For 
  example, if the range given is 228" max. and 142½" min., then use a 
  number between 222" and 148½". We rec om mend using the average of 
  185¼" as the TD.
➁ The distance from the center line of the lens to the bottom of the projector’s 
 feet 

(CL). 

To 

fi nd the mounting point (m = back edge of the rough cut) use 

 the 

fol 

low ing formula:

  y = 15" + CL 

z = TD – y 

m = z + 8"

Remember:
CL = Distance from center line of lens to bottom of pro jec tors feet.
TD = Manufacturer’s hor i zon tal throw dis tance for the se lect ed screen size.
m = Calculated mounting point (mounting point is back edge of rough cut as 
measured from screen surface.)
As an example, if you are using a pro jec tor with recommended throw distance 
(TD) of 185¼" for a 100" diagonal image, and its CL di men sion is 4", calculate 
the mounting point as follows:
  y = 15" + CL 

z = TD – y 

m = z + 8"

  y = 15" + 4" 

z = 185¼" – 19" 

m = 166¼" + 8"

  y = 19" 

z = 166¼" 

m = 174¼"

In the example above, the distance from the screen to the back edge of the 
rough cut would be 174¼". (Formula has a ± 6" accuracy).

The Revelation may be installed in a variety of ways. Typically, it is re cessed 
above the ceiling and supported by six (6) 

3

/

8

" threaded mount ing rods. The 

bottom of the main pan should be recessed ap prox i mate ly 76mm above 
the fi nished ceiling. The threaded rods should pass through mount ing holes 
supplied in each corner and secured by nuts above and below. The unit 
should then be guy wired or blocked to prevent swing ing.
All installations should observe the following guidelines:
➀ Installer must ensure that all fasteners and supports are of ad e quate 
  strength to securely support Revelation and pro jec tor.
➁ Fastening methods must be suitable for mounting surface, and se cure ly 
  anchored so that vibration or abusive pulling on unit will not weaken 
 installation.
➂ Unit should be level, with weight shared more or less equally by all six 
  threaded mounting rods.