Lightolier 8052 Page 2 of, Calculite CFL Open Downlight, Aperture 2 Quad Tube Horizontal Lamp

Calculite® CFL Open Downlight 8052

Page 2 of 2

13W

Quick Calculator

	60	ROOM SURFACE REFLECTANCES:
		80% Ceiling; 50% Wall, 20% Floor
INITIAL	50	860 Lumens Per Lamp
		RCR= 1 (Rm. Width = 10xMtg. Ht. above work plane)
	40	RCR= 5 (Rm. Width = 2xMtg. Ht. above work plane)
FOOTCANDLES		RCR=10 (Rm. Width = Mtg. Ht. above work plane)
	30
	20
	10

10		20	30	40	50	60	70	80	90
			AREA PER FIXTURE IN SQUARE FEET
3	4	5	6		7		8	9	10

CENTER TO CENTER DISTANCE OF FIXTURES IN FEET

This quick calculator chart determines the number and spacing of 2 lt.-13W Quad Tube units with clear or clear incandescent free reflector, for any level of illumination.

Spacing Ratio = 1.6

Certified Test Report Number: LSI 9474

COMPUTED BY: LSI PROGRAM “TEST-LITE”

PREPARED FOR: LIGHTOLIER INC.

APERTURE: 7 3/8”

REFLECTOR: SPECULAR CLEAR, OPEN BOTTOM

LAMPS: TWO OSRAM DOUBLE DULUX 13W/41 QUAD TUBES RATED AT 860 LUMINES.

			CANDELPOWER SUMMARY
ACROSS		Angle	Along	22.5	45	67.5	Across	Lumens
45		0	418	418	418	418	418
ALONG		5	406	412	422	439	442	41
		10	400	410	441	471	490
		15	388	414	455	497	526	129
	90	20	378	427	470	493	542
		25	411	442	514	499	532	222
		30	409	461	509	512	535
		35	397	437	500	515	524	290
		40	347	369	415	430	446
		45	267	279	291	307	324	214
200	60	50	114	113	111	121	134
		55	18	11	13	13	17	33
		60	4	3	4	3	4
		65	3	1	2	2	3	2
		70	1	0	1	0	2
400		75	1	0	0	0	1	0
		80	0	0	0	0	0
		85	0	0	0	0	0	0
		90	0	0	0	0	0
600		ZONAL LUMENS AND PERCENTAGES
		Zone	Lumens		% Lamp		% Luminaire
0
	30	0–30		391	22.74		42.01
		0–40		681	39.60		73.16
**EFFICIENCY = 54.1%**		0–60		928	53.98		99.73
		0–90		930	54.13		100.00
		40–90		249	14.53		26.84
DATE: MAY 22, 1990		60–90		2	.15			.27
		90–180		0	.00			.00
		0–180		930	54.13		100.00

TESTED ACCORDING TO IES PROCEDURES. TEST DISTANCE = 7.9 METERS (26.0 Ft.)

Coefficients Of Utilization

					% Effective Ceiling Cavity Reflectance
			80			70			50			30			10		0
							%Wall Reflectance
		50	30	10	50	30	10		30	10	50	30	10	50	30	10	0
								50
	1	.60	.58	.57	.59	.57	.56	.56	.55	.54	.54	.54	.53	.52	.52	.51	.50
ROOM	2	.55	.53	.51	.54	.52	.51	.53	.51	.49	.51	.50	.48	.50	.48	.47	.46
	3	.51	.48	.46	.50	.48	.46	.49	.47	.45	.47	.46	.44	.46	.45	.43	.42
CAVITY	4	.47	.44	.42	.47	.44	.41	.45	.43	.41	.44	.42	.40	.43	.41	.40	.39
	5	.43	.40	.37	.43	.40	.37	.42	.39	.37	.41	.38	.37	.40	.38	.36	.35
	6	.40	.36	.34	.39	.36	.34	.39	.36	.33	.38	.35	.33	.37	.36	.33	.32
RATIO	7	.36	.33	.30	.36	.33	.30	.35	.32	.30	.35	.32	.30	.34	.32	.30	.29
	8	.33	.30	.27	.33	.29	.27	.32	.29	.27	.32	.29	.27	.31	.28	.26	.26
	9	.30	.27	.24	.30	.26	.24	.29	.26	.24	.29	.26	.24	.28	.26	.24	.23
	10	.27	.24	.21	.27	.24	.21	.27	.23	.21	.26	.23	.21	.26	.23	.21	.20

20% FLOOR CAVITY REFLECTANCE

For Units with Clear or Clear Irridescence Free reflector, multiply C.U.’s by 1.0.

6" Aperture (2) Quad Tube Horizontal Lamp

Job Information Type:

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. www.lightolier.com © 2008 Philips Group • A0708

Lightolier is a Philips group brand