115213_-_PROJECTION_SCREENS.pdf

USDA FOREST SERVICE – BUILDING 26

PHASE 2, NORTH WING RENOVATION

FORT MISSOULA, MISSOULA, MONTANA

PROJECTION SCREENS 115213 - 1

SECTION 115213 - PROJECTION SCREENS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Electrically operated, front-projection screens and controls.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Shop Drawings: Show layouts and types of front-projection screens. Include the following:

1. Location of seams in viewing surfaces.

2. Anchorage details, including connection to supporting structure for suspended units.

3. Location of wiring connections for electrically operated units.

4. Wiring diagrams for electrically operated units.

PART 2 - PRODUCTS

2.1 MANUALLY OPERATED, FRONT-PROJECTION SCREENS

A. General: Manufacturer's standard spring-roller-operated units, consisting of case, screen, mounting accessories, and other components necessary for a complete installation.

1. Tab Tensioning: Provide units that have a durable low-stretch cord, such as braided polyester, on each side of screen that is connected to edge of screen by tabs to pull screen flat horizontally.

2.2 ELECTRICALLY OPERATED, FRONT-PROJECTION SCREENS

A. Suspended, Electrically Operated Screens with Automatic Ceiling Closure and with Tab Tensioning: Motor-in-roller units designed and fabricated for suspended mounting; with bottom of case composed of two panels, fully enclosing screen, motor, and wiring; one panel hinged and designed to open and close automatically when screen is lowered and fully raised, the other removable or openable for access to interior of case.

B. Manufacturer: Draper, Envoy

C. Properties:

1. Screen case constructed to be installed with underside flush with ceiling.

2. Fully automatic ceiling closure doors conceal screen when not in use.

3. Door and box color: White

4. Size: 50 inches x 66 1/2 inches

USDA FOREST SERVICE – BUILDING 26

PHASE 2, NORTH WING RENOVATION

FORT MISSOULA, MISSOULA, MONTANA

PROJECTION SCREENS 115213 - 2

5. Overall Case Length: Coordinate with existing beam locations within room.

6. Rigid metal roller.

7. Position control switch with cover plate.

8. Motor:

a. Built-in Low Voltage Controller

b. 120 volt, 2.4 amp, 60 Hz

c. 3-Button Switch

d. Number of Switches: 1

e. In-Roller Motor Mounting System

f. Internal Thermal Overload Protector

g. Electric Break with Preset Limits

2.3 FRONT-PROJECTION SCREEN MATERIAL

A. Matte-White Viewing Surface: Peak gain of not less than 0.9, and gain of not less than 0.8 at an angle of 50 degrees from the axis of the screen surface.

B. Material: flame retardant and mildew resistant, vinyl-coated, glass-fiber fabric.

1. Matt White XT1000E, Greengard Gold certified.

C. Seamless Construction: Provide screens, in sizes indicated, without seams.

D. Edge Treatment: Black masking borders.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install front-projection screens at locations indicated to comply with screen manufacturer's written instructions.

B. Install front-projection screens with screen cases in position and in relation to adjoining construction indicated. Securely anchor to supporting substrate in a manner that produces a smoothly operating screen with vertical edges plumb and viewing surface flat when screen is lowered.

1. Install low-voltage controls according to NFPA 70 and complying with manufacturer's written instructions.

a. Wiring Method: Install wiring in raceway except in accessible ceiling spaces and in gypsum board partitions where unenclosed wiring method may be used. Use UL-listed plenum cable in environmental air spaces, including plenum ceilings.

Conceal raceway and cables except in unfinished spaces.

2. Test electrically operated units to verify that screen controls, limit switches, closures, and other operating components are in optimum functioning condition.

END OF SECTION 115213

2. Test electrically operated units to verify that screen controls, limit switches, closures, and other operating components are in optimum functioning condition.