Lightolier PRA2GRFVA26U User Manual
PRISMALYTE plus PRA2GRFVA26U
Page 1 of 2 2'x2' RECESSED FLUORESCENT, FLOATING LENS FRAME WITH BLACK REVEAL
STATIC OR AIR SUPPLY/RETURN, 2–6"U LAMP, T8 OR T12
MOUNTING METHOD DIMENSIONS
Job Information Type:
Job Name:
Cat. No.:
Lamp(s):
Volts/Ballast:
Lightolier a Genlyte Thomas Company www.lightolier.com
Technical Information: (978) 657-7600 • Fax (978) 658-0595
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902 Section 1A/Folio E20-32
Features
• 5" deep body.
• 2-9/16" lamp to lens for better lamp obscuration.
• 71.6% efficient.
• 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.
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)
23-7/8"
(606mm)
5"
(127mm)
15-11/16"
(398mm)
Air supply slots
(PRA only)
2"x 2-1/2" access plate
with two K.O.s (7/8" dia.)
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"
24" (610mm)
5" (127mm)
earthquake clip
installed
(lay-in grid)
earthquake clip
before
installation
PRISMALYTE plus PRA2GRFVA26U
Page 2 of 2 2'x2' RECESSED FLUORESCENT, FLOATING LENS FRAME WITH BLACK REVEAL
STATIC OR AIR SUPPLY/RETURN, 2–6"U LAMP, T8 OR T12
Lightolier a Genlyte Thomas Company www.lightolier.com
Technical Information: (978) 657-7600 • Fax (978) 658-0595
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902 Section 1A/Folio E20-32
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 2 lamp 31W luminaires in a room cavity
ratio of 1, reflectance 80% ceiling, 50% wall, 20% floor, the C.U. shall not be
less than .76. To prevent glare the VCP shall be not less than 41 either lengthwise or crosswise (at 100fc level) and the average brightness at 65° shall not
exceed 2572 candelas per square meter. To control veiling reflections, luminaire
output in the 30°-90° zone shall not be less than 66.9%.
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.
Specifications (continued)
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-UL.
PHOTOMETRY MODEL NO. PRA2GRFVA26U120
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
1797673 716967 686665
2726762 636057 615855
3666054 565249 545148
4615348 514642 494542
5574842 464137 444037
6534438 423733 413633
7494034 383329 373329
8463631 353026 343026
9433428 322724 322724
10 40 31 26 30 25 22 29 25 22
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 57 61 67 73 54 58 64 70
20 30 49 53 58 64 46 50 55 60
20 40 46 48 53 57 42 45 49 54
20 60 42 45 48 52 38 41 43 48
30 20 58 63 67 72 56 61 65 70
30 30 50 54 58 63 47 51 55 60
30 40 46 49 52 56 42 45 49 53
30 60 42 45 47 50 39 41 43 47
30 80 41 43 43 47 38 39 40 43
40 20 60 64 68 72 58 63 67 70
40 30 51 55 59 63 49 53 57 61
40 40 47 50 53 56 44 47 50 53
40 60 43 46 47 50 40 42 43 47
40 80 42 43 43 46 38 40 40 43
40 100 42 43 42 44 39 39 38 40
60 30 52 56 60 64 51 55 58 62
60 40 48 50 53 57 45 48 51 55
60 60 44 46 47 50 41 43 44 48
60 80 42 44 43 46 39 40 40 43
60 100 42 43 42 44 39 39 38 40
100 40 51 53 55 59 49 52 54 57
100 60 47 48 48 52 45 46 46 50
100 80 45 45 45 48 43 43 42 45
100 100 44 44 43 45 42 41 40 41
room cavity ratio
luminaries lengthwise
luminaries crosswise
ORDERING INFORMATION
Explanation of Catalog Number. Example: PRA2GRFVA26U120SORF
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
2
LAMP
QUANTITY
6U
LAMP TYPE/
FIXTURE LENGTH:
6"U Lamp
T8 or T12
(Nominal 24")
VOLTAGE:
120 or 277
OPTIONS:
Add appropriate
suffix to catalog no.,
ie: (RF)
BALLAST TYPE:
1–2 Lamp Mag. T12 LE
<20THD
<10THD
1–2 Lamp Elec. T8 SO* H
I*
LOL T8 Dimming PS –
*Instant Start Standard
Other dimming options. Consult factory.
Luminaire Efficacy Rating
LER-58.4 Watts-56.5 BF-0.87
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