Lightolier VRB Series Page 2 of, Options & Accessories, Specifications, SPECIFICATIONS continued

SECTION 2/Folio G05-72 REV. A

	VISION SMART PARABOLIC (VRB) VRB SERIES 1'x4'
Page 2 of 2	1'x4' SURFACE BOX FLUORESCENT, 3" DEEP PARABOLIC LOUVER
	IES RP1 FOR NORMAL VDT USE, 1 OR 2 LAMP T8, T12

PHOTOMETRY

		LER = FP - 25.9			IW - 63.8				BF - 0.88
MODEL NO. VRB1S8LS132120SO Comparative yearly lighting energy cost per 1000 lumens = $9.26
		coefficients of utilization — zonal cavity method
			RF		20					20					20
			RC		80					50					30
			RW	70	50		30		50	30	10		50		30	10
			1	73	71		69		67	65	64		64		63	62
		ratio	2	68	64		60		60	57	55		58		56	54
			3	63	57		52		54	50	47		52		49	47
		cavity	4	58	51		46		48	44	41		47		43	41
			5	53	46		40		44	39	36		42		39	36
		room	6	49	41		36		40	35	32		38		34	31
			7	46	37		32		36	31	28		35		31	28
			8	42	34		29		33	28	25		32		28	25
			9	40	31		26		30	26	22		29		25	22
			10	37	29		24		28	23	20		27		23	20
		visual comfort probability
			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			90	87	82	86		88	85	80		78
	20			30			91	89	86	84		90	87	82		78
	20			40			92	90	88	86		90	88	85		80
		20		60			93	91	89	88		90	88	86		83
	30			20			91	89	84	84		88	88	82		79
	30			30			92	91	87	82		90	90	84		78
	30			40			93	92	89	84		90	90	86		80
	30			60			94	93	90	86		90	90	87		83
		30		80		lengthwise	94	93	90	86	crosswise	90	90	87		83
	40			40			94	92	80	85		90	90	88		82
	40			20			91	89	85	85		88	88	84		80
	40			30		luminaries	93	91	88	83	luminaries	90	90	86		80
	40			60			94	93	91	87		90	90	88		84
	40			80			94	92	91	87		90	90	88		84
		40		100			94	92	91	87		90	90	88		84
	60			30			93	91	88	85		90	90	86		81
	60			40			93	92	90	87		90	90	88		83
	60			60			94	93	91	88		90	90	88		85
	60			80			94	93	91	88		91	90	88		85
		60		100			94	93	91	88		91	90	88		85
	100			40			93	92	90	87		90	90	88		83
	100			60			94	93	91	88		91	90	88		85
	100			80			94	93	91	89		91	90	88		85
		100		100			94	93	91	89		91	90	88		86

ORDERING INFORMATION

Explanation of Catalog Number. Example: VRB1S8LS132120SOGLR

VR	B	1
VR		FIXTURE
3" Deep		WIDTH:
Pre-
anodized
Aluminum
Louver
	BODY STYLE:
	Surface Box

S						L	S
			NUMBER OF				WHITE		LAMP/
				CELLS:			REFLECTOR		FIXTURE
	8=			1 row of					LENGTH:
				8 cells					32=T8
		12= 1 row of							34=T12
				12 cells					(Nominal 48")
		16= 2 rows of
				8 cells
		24= 2 rows of
CEILING				12 cells	LOUVER FINISH:			LAMP
TYPE:					L= Low-iridescence			QUANTITY:
S=Surface						Semi-specular		1 lamp
					P= Low-iridescence			2 lamp
						Specular

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

*Instant Start Standard

Other dimming options, consult factory.

OPTIONS & ACCESSORIES

FUSING: Internal fast-blow fusing.

SUFFIX: GLR.

Internal slow-blow fusing.

SUFFIX: GMF.

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

One per fixture. SUFFIX: RF.

ELECTRICAL/WIRING OPTIONS: Consult factory.

STEM AND CANOPY SETS: Suspends fixture 6", 12", 18" or 24" from surface.

(Four per fixture is required). Catalog Number: ASC6 CSP (6"), ASC18 CSP (12"), ASC18 CSP (18"), ASC24 CSP (24").

SPECIFICATIONS

PERFORMANCE: In an installation of 1 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 .71 with a spacing to mounting ratio of 1.9 perpendicular to the lamp. To meet IES RP-1 recommended (basic) requirements for VDT areas the VCP (visual comfort probability) shall not be less than 90 either crosswise or length- wise and the maximum average brightness at 65°, 75° and 85° shall not exceed 592, 109 and 81 candelas per square meter respectively in the 0°, 45° and 90° horizontal planes. Candelas at Nadir (0°) not to exceed 671.

SPECIFICATIONS (continued)

MATERIALS: Chassis parts are die-formed 20 gauge cold rolled steel with 45° mitered corners welded and turned in edges for safe handling. LOUVER: Pre-anodized aluminum (Coilzak® or equal).

FINISH: Louver—semi-specular low iridescence, pre-anodized reflector sheet. Cavity—white baked acrylic minimum reflectance 86%, Phosphate undercoat- ing. Chassis exterior—white baked acrylic enamel.

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 listed.

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