Lightolier PRA2GRFVA432 User Manual

PRISMALYTE plus PRA2GRFVA432

Page 1 of 2 2'x4' RECESSED FLUORESCENT, FLOATING LENS FRAME WITH BLACK REVEAL

STATIC OR AIR SUPPLY/RETURN, 4 LAMP, T8 OR T12

MOUNTING METHODS DIMENSIONS

Job Information Type:

Job Name:

Cat. No.:

Lamp(s):

Volts/Ballast:

Lightolier a Genlyte Thomas Company www.lightolier.com

Technical Information: [phone] • Fax [phone]
631 Airport Road, Fall River, MA 02720 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902 Section 1A/Folio E20-44

Features

• 5" deep body.

• 2-9/16" lamp to lens for better lamp obscuration.

• 76.7% efficient.

• Black housing exterior for cooler ballast operating temperature.

• Clean contoured interior.

• Eyeleted heat removal vents in fixture ends.

• One-piece housing has ribbed construction for added strength.

• Hemmed over side rails for maximum safety.

• Fixture ends turned-in for safe handling.

• Built-in earthquake clips (patent no. 5,072,344).

• Door jamb finished black on four sides for positive light stop.

• True mitered corner aluminum lens frame.

• Spring loaded rooster head latches.

• 18 gauge steel hinges.

G

exposed T-grid ceiling.

T

exposed slot T-grid ceiling.

T

direct concealed two directional
T-grid ceiling. (see options for
splay trim)

drywall kit. (See options)

1/4" max.

1-1/2" max.

15/16"

or 1"

24"

1/4" max.

Type “G”

Fixture

15/16"

Ceiling Opening

24-5/16" x 48-5/16"

Support
(by others)

Drywall Kit

(See Options)

Drywall
(by others)

1-7/8" max.

3/8"

24"

1-7/8" max.

9/16"

24"

earthquake clip

installed

(lay-in grid)

earthquake clip

before

installation

6" (152mm) Air supply slots

(PRA only)

39-1/4" (997mm)

47-31/32" (1218mm)

2" x 2-1/2" access plate
with two K.O.s
(7/8" dia.)

24" (610mm)

5" (127mm)

PRISMALYTE plus PRA2GRFVA432

Page 2 of 2 2'x4' RECESSED FLUORESCENT, FLOATING LENS FRAME WITH BLACK REVEAL

STATIC OR AIR SUPPLY/RETURN, 4 LAMP, T8 OR T12

Lightolier a Genlyte Thomas Company www.lightolier.com

Technical Information: [phone] • Fax [phone]
631 Airport Road, Fall River, MA 02720 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902 Section 1A/Folio E20-44

Job Information Type:

OPTIONS & ACCESSORIES

SPECIAL LENSES: Substitute VB for VA (standard) = .125" nominal pattern 12

with 7.8 oz. average weight per square foot. Substitute VI for VA (standard) =
.125" nominal pattern 12 with 6.8 oz. average weight per square foot.

SPLAY TRIM: For T ceiling type only. SUFFIX: CTZ24 S2 SPLAY TRIM.
RADIO INTERFERENCE FILTER: 120 or 277 volt, 50 or 60 Hz. One per fixture
standard. SUFFIX: RF.
AIR CLOSURE STRIP: SUFFIX ACS4 (factory installed).
ELECTRICAL WIRING OPTIONS: Consult factory.
DRYWALL KIT: Order Catalog Number: FK92X4.

(Request Folio OA30-10.)

CHICAGO PLENUM: SUFFIX: CP.

SPECIFICATIONS

PERFORMANCE: In an installation of 4 lamp 32W luminaires in a room cavity

ratio of 1, reflectance 80% ceiling, 50% wall, 20% floor, the C.U. shall not be less
than .81. To prevent glare the VCP shall be not less than 43 either lengthwise or
crosswise (at 100fc level) and the average brightness at 65° shall not exceed 2805
candelas per square meter. To control veiling reflections, luminaire output in the
30°-90° zone shall not be less than 67.3%.
AIR HANDLING: (PRA only) side air passages for air supply or air return. Supply
air is discharged vertically. Optional side closure strips. Air return is also provided

through the lamp compartment through fixture body ends.

MATERIALS: Chassis parts are die-formed code gauge cold rolled steel.
Housing with side rails hemmed over and housing ends turned-in for safe handling.
FINISH: Chassis exterior—black baked polyester enamel. Cavity—white

baked polyester enamel minimum 86% reflectance. Phosphate undercoating.
LENSES: VA (standard) extruded virgin acrylic, 3/16" square based female
cones, running 45° to the panel edge, .095" nominal thickness (similar to pat­tern 12). VB (optional) .125" nominal pattern 12 with 7.8 oz. average weight per
square foot. VI (optional) .125" nominal pattern 12 with 6.8 oz. average weight
per square foot.
ELECTRICAL: Thermally protected class “P” ballast C.B.M. approved, non PCB.
If K.O. is within 3" of ballast, use wire suitable for at least 90°.
LABELS: I.B.E.W./UL and C-ULc Listed.

PHOTOMETRY MODEL NO. PRA2GRFVA432

coefficients of utilization — zonal cavity method (effective floor cavity reflectance 0.20)

RF 20 20 20
RC 80 50 30

RW 70 50 30 50 30 10 50 30 10

1848178 767472 737169
2777167 676460 656259
3716358 605552 585451
4655751 544945 524844
5605145 494339 474339
6564640 443935 433834
7524236 403531 393431
8493932 373228 363128
9453630 342925 342925

10 43 33 27 32 27 23 31 26 23

visual comfort probability (rated lumens per lamp 3150.)

room size ceiling height ceiling height
W L 8.5 10.0 13.0 16.0 8.5 10.0 13.0 16.0
20 20 61 65 72 79 58 63 69 76

20 30 54 58 63 69 50 54 60 66
20 40 50 53 58 62 45 49 54 59
20 60 46 49 52 57 41 45 48 53

30 20 62 67 71 77 60 65 69 75
30 30 54 58 62 67 51 55 60 65
30 40 50 53 56 60 46 49 53 57
30 60 46 49 51 54 41 45 47 51
30 60 44 46 47 51 39 42 43 47

40 20 63 68 72 76 62 67 71 75
40 30 55 59 63 67 53 57 61 65
40 40 50 53 57 60 47 50 54 57
40 60 46 49 51 54 42 45 47 51
40 80 44 46 47 50 40 42 43 47
40 100 44 45 45 48 39 41 41 44

60 30 56 60 64 67 54 59 62 66
60 40 51 54 57 60 48 52 55 58
60 60 46 49 50 54 43 46 47 51
60 80 44 46 47 50 40 43 43 46
60 100 43 45 45 47 39 41 41 43

100 40 53 56 58 62 52 55 57 61
100 60 49 51 52 55 46 49 50 53
100 80 46 48 48 51 43 45 45 48
100 100 45 46 45 48 41 42 42 44

room cavity ratio

luminaries lengthwise

luminaries crosswise

ORDERING INFORMATION

Explanation of Catalog Number. Example: PRA2GRFVA432120O4RF

PR

PRISMALYTE plus:

Floating

Lens Frame

Recessed

Fluorescent

Troffer

BODY STYLE:

A=Air Handling
S=Static

2

FIXTURE

WIDTH

CEILING TYPE:

G= Grid

(lay-in T bar)

T=Slot grid or

two-directional

concealed T

see options)

RF

LENS FRAME:

RF=1/2" regressed

floating aluminum
frame with 7/16"
black reveal four
sides.

VA

LENS/SHIELDING

TYPE:

VA=Virgin acrylic

(standard), see
options and
consult factory

4

LAMP

QUANTITY

LAMP TYPE/

FIXTURE LENGTH:

32=T8
34=T12

(Nominal 48")

VOLTAGE:

120 or 277

OPTIONS:

Add appropriate

suffix to catalog no.,

ie: (RF)

BALLAST TYPE:

2 Lamp Mag. T12 LE

<20THD

<10THD

2-2 Lamp Elec. T8 SO* H

I*

1-4 Lamp Elec. T8 O4* H4*
LOL T8 Dimming PS –

*Instant Start Standard

Other dimming options. Consult factory.

Luminaire Efficacy Rating
LER-68.7 Watts-109.5 BF-0.86