Lightolier PRA2GRFVA3FT, PRA2GRFVA2FT User Manual

PRISMALYTE plus PRA2GRFVA3FT or 2FT

Page 1 of 2 2'x2' RECESSED FLUORESCENT, FLOATING LENS FRAME WITH BLACK REVEAL

STATIC OR AIR SUPPLY/RETURN, 2 OR 3 LAMP, TWIN TUBE T5

MOUNTING METHOD 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 E20-34

Features

• 5" deep body.

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

• 75.4% efficient (3 lamp TT5).

• Black housing exterior for cooler ballast operating temperature.

• Clean contoured interior.

• Eyeleted heat removal vents in fixture ends.

• 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.

• 2 lamp TT5 available.

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 24-5/16"

Support
(by others)

Drywall Kit

(See Options)

Drywall
(by others)

1-7/8" max.

3/8"

24"

1-7/8" max.

9/16"

24"

23-7/8"

(606mm)

15-11/16"

(398mm)

3-1/2"

(89mm)

5"

(127mm)

C

L

Air supply slots
(PRA only)

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

24" (610mm)

5" (127mm)

24" (610mm)

5" (127mm)

earthquake clip

installed

(lay-in grid)

earthquake clip

before

installation

PRISMALYTE plus PRA2GRFVA3FT or 2FT

Page 2 of 2 2'x2' RECESSED FLUORESCENT, FLOATING LENS FRAME WITH BLACK REVEAL

STATIC OR AIR SUPPLY/RETURN, 2 OR 3 LAMP, TWIN TUBE T5

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 E20-34

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: CTZ22 S2 SPLAY TRIM.
RADIO INTERFERENCE FILTER: 120 or 277 volt, 50 or 60 Hz. One per fixture
standard. SUFFIX: RF.
AIR CLOSURE STRIP: SUFFIX ACS2 (factory installed).
ELECTRICAL WIRING OPTIONS: Consult factory.
DRYWALL KIT: Order Catalog Number: FK92X2.

Request Folio OA30-10.

CHICAGO PLENUM: SUFFIX: CP.

SPECIFICATIONS

PERFORMANCE: In an installation of 3 lamp 40W luminaires in a room cavity

ratio of 1, reflectance 80% ceiling, 50% wall, 20% floor, the C.U. shall not be less
than .71. To prevent glare the VCP shall be not less than 36 either lengthwise or
crosswise (at 100fc level) and the average brightness at 65° shall not exceed 4656
candelas per square meter. To control veiling reflections, luminaire output in the
30°-90° zone shall not be less than 66.2%.
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 ULc Listed.

PHOTOMETRY MODEL NO. PRA2GRFVA3FT

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

1838077 757371 727069
2767166 676360 646159
3706358 605552 585451
4655751 544945 524844
5605145 494440 474339
6564640 443935 433835
7524236 413531 393531
8483933 373228 363228
9453630 342926 342926

10 43 33 27 32 27 23 31 27 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 44 47 53 60 42 46 51 58

20 30 37 40 44 49 34 38 42 47
20 40 34 36 40 43 31 33 37 41
20 60 31 33 35 39 28 30 32 36

30 20 45 49 53 58 44 48 51 57
30 30 38 41 44 48 35 39 42 46
30 40 34 36 39 42 31 34 37 40
30 60 31 33 34 37 28 30 31 35
30 80 31 32 32 34 27 29 29 32

40 20 47 51 54 58 46 50 53 58
40 30 39 42 45 49 37 41 44 47
40 40 35 37 40 42 32 35 38 40
40 60 32 34 34 37 29 31 32 35
40 80 31 32 32 34 28 29 29 32
40 100 32 32 31 32 29 29 28 30

60 30 40 44 46 50 39 43 45 49
60 40 36 38 40 43 34 36 38 42
60 60 33 34 34 37 30 32 32 35
60 80 32 32 32 34 29 30 29 32
60 100 32 32 30 32 29 29 28 30

100 40 39 41 42 45 38 40 41 45
100 60 36 37 36 39 34 35 35 38
100 80 35 35 33 35 32 32 31 34
100 100 35 34 32 33 32 31 29 30

room cavity ratio

luminaries lengthwise

luminaries crosswise

ORDERING INFORMATION

Explanation of Catalog Number. Example: PRA2GRFVA3FT120X3RF

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

LAMP

QUANTITY

2=2 Lamp
3=3 Lamp

FT

LAMP TYPE/

FIXTURE LENGTH:

Twin Tube T5
(Nominal 24")

VOLTAGE:

120 or 277

OPTIONS:

Add appropriate

suffix to catalog no.,

ie: (RF)

BALLAST TYPE:

<20THD <10THD

1 & 2 Lamp Elec. TT5 SB*

IB*

(40 Watt)

1-3 Lamp Elec. TT5 X3*

I3*

(40 Watt)

LOL TT5 Dimming PB –
*Instant Start Standard

Other dimming options. Consult factory.

Luminaire Efficacy Rating
LER-42.7 Watts-98.0 BF-0.88