Lightolier PRA1GRFVA232 Page 2 of, Photometry, Ordering Information, Options & Accessories, Type

Section 1A/Folio E20-40

	PRISMALYTE plus PRA2GRFVA232
Page 2 of 2	2'x4' RECESSED FLUORESCENT, FLOATING LENS FRAME WITH BLACK REVEAL
	STATIC OR AIR SUPPLY/RETURN, 2 LAMP, T8 OR T12

PHOTOMETRY

MODEL NO. PRA2GRFVA232							Luminaire Efficacy Rating
							LER-61.2 Watts-63.1 BF-0.87
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
	1	85	82	79	77	75	73	74	72	70
ratio	2	78	72	67	68	64	61	66	62	60
	3	72	64	58	61	56	52	59	55	51
cavity	4	66	57	51	54	49	45	53	48	44
	5	61	51	45	49	43	39	47	43	39
room	6	56	47	40	44	39	35	43	38	34
	7	52	42	36	41	35	31	39	34	31
	8	49	39	32	37	32	28	36	31	28
	9	46	36	29	34	29	25	33	28	25
	10	43	33	27	32	26	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		66	70	77	84		65	68	74	81
20	30		60	64	69	75		60	63	66	72
20	40		56	59	64	69		58	60	63	66
20	60		53	56	59	64		56	58	60	62
30	20		68	72	76	82		67	70	74	80
30	30		61	64	68	73		62	64	66	71
30	40		57	60	63	67		59	61	62	65
30	60		53	56	58	62		57	58	59	61
30	80	lengthwise	52	54	55	59	crosswise	56	58	57	59
40	40		58	61	63	67		60	62	63	65
40	20		70	73	77	82		69	72	75	80
40	30		63	66	69	73		64	66	67	71
40	60	luminaries	54	56	58	61	luminaries	58	59	59	61
40	80		52	54	54	58		57	58	57	59
40	100		52	53	53	55		57	58	56	57
60	30		64	67	70	74		65	67	69	72
60	40		60	62	64	67		61	63	64	66
60	60		55	57	58	61		59	60	59	61
60	80		53	54	54	57		57	58	57	59
60	100		53	53	52	55		57	58	56	57
100	40		63	65	66	69		64	66	66	68
100	60		59	60	60	63		61	62	61	63
100	80		56	57	56	59		60	60	59	60
100	100		55	55	54	56		59	59	57	58

ORDERING INFORMATION

Explanation of Catalog Number. Example: PRA2GRFVA232120SORF

PR

2 RF VA 2

BODY STYLE:

A=Air Handling

S=Static

PRISMALYTE plus:

Floating

Lens Frame

Recessed

Fluorescent

Troffer

	CEILING TYPE:	LENS/SHIELDING	LAMP TYPE/
	G= Grid	TYPE:	FIXTURE LENGTH:
	(lay-in T bar)	VA=Virgin acrylic	32=T8
	T=Slot grid or	(standard), see	34=T12
	two-directional	options and	(Nominal 48")
FIXTURE	concealed T	LENS FRAME: consult factory	LAMP
WIDTH	see options)	RF=1/2" regressed	QUANTITY

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

VOLTAGE:		OPTIONS:
120 or 277	Add appropriate
	suffix to catalog no.,
		ie: (RF)
BALLAST TYPE:
1–2 Lamp Mag. T12	LE	<10THD
	<20THD
1–2 Lamp Elec. T8	SO*	HI*
LOL T8 Dimming	PS	–

*Instant Start Standard

Other dimming options. Consult factory.

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: CTZ14 S2 SPLAY TRIM. AIR CLOSURE STRIP: SUFFIX ACS4 (factory installed).

RADIO INTERFERENCE FILTER: 120 or 277 volt, 50 or 60 Hz. One per fixture

standard. SUFFIX: RF.

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 2 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 .82. To prevent glare the VCP shall be not less than 55 either lengthwise or crosswise (at 100fc level) and the average brightness at 65° shall not exceed 1649 candelas per square meter. To control veiling reflections, luminaire output in the 30° - 90° zone shall not be less than 68.7%.

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

SPECIFICATIONS (continued)

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 pat- tern 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.

Job Information	Type:
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