Lightolier PRA2GRFVA26U Page 2 of, Photometry, Ordering Information, Options & Accessories, Type

Section 1A/Folio E20-32

	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

PHOTOMETRY

MODEL NO. PRA2GRFVA26U120							Luminaire Efficacy Rating
							LER-58.4 Watts-56.5 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
ratio	1	79	76	73	71	69	67	68	66	65
	3	66	60	54	56	52	49	54	51	48
	2	72	67	62	63	60	57	61	58	55
cavity	4	61	53	48	51	46	42	49	45	42
	5	57	48	42	46	41	37	44	40	37
room	6	53	44	38	42	37	33	41	36	33
	8	46	36	31	35	30	26	34	30	26
	7	49	40	34	38	33	29	37	33	29
	9	43	34	28	32	27	24	32	27	24
	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	lengthwise	42	45	47	50	crosswise	39	41	43	47
40	40		47	50	53	56		44	47	50	53
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	60	luminaries	43	46	47	50	luminaries	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

ORDERING INFORMATION

Explanation of Catalog Number. Example: PRA2GRFVA26U120SORF

PR

2 RF VA 2 6U

BODY STYLE:

A=Air Handling

S=Static

PRISMALYTE plus:

Floating

Lens Frame

Recessed

Fluorescent

Troffer

	CEILING TYPE:		LENS/SHIELDING	LAMP TYPE/
	G= Grid			FIXTURE LENGTH:
			TYPE:
	(lay-in T bar)			6"U Lamp
			VA=Virgin acrylic
	T=Slot grid or			T8 or T12
			(standard), see
	two-directional			(Nominal 24")
			options and
	concealed T
FIXTURE			LENS FRAME: consult factory	LAMP
	see options)
WIDTH		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
	<20THD <10THD
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: 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 length- wise 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.

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