Lightolier 8022 specifications Quick Calculator, Spacing Ratio =

Calculite® CFL Open Downlight  8022

Page 2 of 2

32W

Quick Calculator

	80	ROOM SURFACE REFLECTANCES:
		80% Ceiling; 50% Wall; 20% Floor
	70	2400 Lumens Per Lamp
	60	RCR = 1	(Rm. width = 10 x Mtg. Ht. above work plane)
FOOTCANDLES		RCR = 5	(Rm. width = 2 x Mtg. Ht. above work plane)
	50	RCR = 10	(Rm. width = Mtg. Ht. above work plane)
	40
INITIAL	30
	20
	10

		20		40	60	80	100	120
			AREA PER FIXTURE IN SQUARE FEET
3	4	5	6	7	8	9	10	11

CENTER TO CENTER DISTANCE OF FIXTURES IN FEET

This quick Calculator chart determines the number and spacing of 1 lt.-32W PL-T units with Comfort Clear™ reflector for any level of illumination. Conversion factor: 1 lt. 26W PL-T with Comfort Clear Clear™ reflector multiply, F.C. x 0.8.

Spacing Ratio = 1.1

7 3/8" Aperture Triple Tube Vertical Lamp

42W

Quick Calculator

	80	ROOM SURFACE REFLECTANCES:
		80% Ceiling; 50% Wall; 20% Floor
	70	3200 Lumens Per Lamp
	60	RCR = 1 (Rm. width = 10 x Mtg. Ht. above work plane)
FOOTCANDLES		RCR = 5 (Rm. width = 2 x Mtg. Ht. above work plane)
	50	RCR = 10 (Rm. width = Mtg. Ht. above work plane)
	40
INITIAL	30
	20
	10

		20		40	60	80	100	120
			AREA PER FIXTURE IN SQUARE FEET
3	4	5	6	7	8	9	10	11

CENTER TO CENTER DISTANCE OF FIXTURES IN FEET

This quick Calculator chart determines the number and spacing of 1 lt.-42W PL-T units with Comfort Clear™ reflector for any level of illumination.

Spacing Ratio = .9

REPORT PREPARED FOR: LIGHTOLIER													REPORT PREPARED FOR: LIGHTOLIER
													REPORT NO: LRL 499-9E
REPORT NO: LRL 499-9F2
													REPORT BY: LIGHTING RESEARCH LABORATORY, INC.
REPORT BY: LIGHTING RESEARCH LABORATORY, INC.
													DESCRIP: 7.5” DIA. x 11 HT RECESSED DOWNLIGHT WITH COMFORT CLEAR™
DESCRIP: 7.5” DIA. RECESSED DOWNLIGHT WITH COMFORT CLEAR™
													REFLECTOR. LAMPS: 1PLT 42W					LUMENS=3200
REFLECTOR LAMPS: 1PL-T 32W						LUMENS=2400
																				CANDLEPOWER SUMMARY
							85ϒ	CANDLEPOWER SUMMARY											85ϒ ANGLE		AVERAGE CP		LUMENS
													200
200							ANGLE			AVERAGE CP		LUMENS								180	0
																				175	0		0
							75ϒ	180		0		0							75ϒ
								175		0			400							165	0		0
400								165		0		0								155	0		0
							65ϒ	155		0		0							65ϒ	145	0		0
								145		0		0	600							135	0		0
600								135		0		0								125	0		0
								125		0		0								115	0		0
							55ϒ	115		0		0	800						55ϒ	105	0		0
								105		0		0								95	0		0
800								95		0		0	1000							85	2		2
								85		1		1								75	4		4
								75		2		2								65	5		5
1000							45ϒ	65		3		3	1200						45ϒ	55	16		14
								55		11		10								45	334		258
								45		226		175								35	797		501
1200								35		678		426	1400							25	1178		545
								25		933		432								15	1504		426
								15		1117		317	1600							5	1585		151
0ϒ	ϒ	15	ϒ	25	ϒ	35	ϒ	5		1179		113								0	1518
	5													0ϒ	5ϒ	15ϒ	25ϒ		35ϒ
								0		1126
**Efficiency = 61.6%**																			ZONAL LUMENS AND PERCENTAGES
							ZONAL LUMENS AND PERCENTAGES						**Efficiency = 59.6%**
																			ZONE	LUMENS	% LAMP	%LUMINAIRE
							ZONE	LUMENS		% LAMP	%LUMINAIRE								0-30	1123	35.1		58.9
													April 27, 1999						0-40	1623	50.7		85.1
							0-30		861	35.9		58.3
							0-40		1287	53.6		87.1							0-60	1896	59.3		99.4
																			0-90	1908	59.6		100.0
							0-60		1472	61.3		99.6
																			40-90	284	8.9		14.9
							0-90		1478	61.6		100.0
																			60-90	12	0.4		0.6
							40-90		191	8.0		12.9
																			90-120	0	0.0		0.0
							60-90		6	0.3		0.4
																			90-150	0	0.0		0.0
							90-120		0	0.0		0.0
																			90-180	0	0.0		0.0
							90-150		0	0.0		0.0
																			0-180	1908	59.6		100.00
							90-180		0	0.0		0.0
Coefficients Of Utilization							0-180		1478	61.6		100.00	Coefficients of Utilization								ZONAL CAVITY METHOD
																			EFFECTIVE FLOOR CAVITY REFLECTANCE = .20

				EFFECTIVE CEILING CAVITY REFLECTANCE
			80			70			50			30			10		0
						WALL REFLECTANCE
		50	30	10	50	30	10	50	30	10	50	30	10	50	30	10	0
RATIO	1	.69	.67 .66		.67	.66	.65	.65	.64	.63	.63	.62	.61	.61	.60	.59	.58
	2	.65	.63	.61	.64	.62	.60	.62	.60	.50	.60	.59	.58	.58	.57	.56	.56
	3	.61	.59	.57	.61	.58	.56	.59	.57	.55	.58	.56	.55	.56	.55	.54	.53
CAVITY	4	.58	.55	.53	.57	.54	.52	.56	.54	.52	.55	.53	.51	.54	.52	.50	.50
	6	.52	.48	.40	.51	.48	.40	.50	.48	.40	.50	.47	.45	.49	.47	.45	.44
	5	.55	.51	.49	.54	.51	.49	.53	.50	.49	.52	.50	.48	.51	.49	.48	.47
ROOM	7	.49	.45	.43	.46	.45	.43	.48	.45	.43	.47	.44	.43	.46	.44	.42	.42
	8	.46	.42	.40	.40	.42	.40	.45	.42	.40	.44	.42	.40	.44	.41	.40	.39
	9	.43	.40 .37		.43	.39	.37	.42	.39	.37	.42	.39	.37	.41	.39	.37	.36
	10	.38	.35 .32		.38	.35	.32	.38	.35	.32	.37	.34	.32	.37	.34	.32	.31

20% FLOOR CAVITY REFLECTANCE

For 1 Lt. 26W triple tube with Comfort Clear reflector multiply C.U.’s by 1.1

CC WALL		80			70			50			30			10
RCR	50	30	10	50	30	10	50	30	10	50	30	10	50	30	10	0
1	.66	.65	.64	.65	.64	.63	.63	.62	.61	.60	.60	.59	.58	.58	.57	.56
2	.62	.60	.58	.61	.59	.57	.59	.58	.56	.57	.56	.55	.56	.55	.54	.53
3	.58	.55	.53	.57	.55	.53	.56	.54	.52	.54	.53	.51	.53	.52	.50	.50
4	.55	.52	.49	.54	.51	.49	.53	.50	.48	.52	.50	.48	.51	.49	.47	.46
5	.51	.48	.46	.51	.48	.45	.50	.47	.45	.49	.46	.45	.48	.46	.44	.43
6	.48	.45	.42	.48	.45	.50	.47	.44	.42	.46	.44	.42	.45	.43	.41	.41
7	.45	.42	.39	.45	.41	.39	.44	.41	.39	.43	.41	.39	.43	.40	.38	.38
8	.42	.39	.36	.42	.38	.36	.41	.38	.36	.40	.38	.36	.40	.37	.36	.35
9	.39	.36	.33	.39	.35	.33	.38	.35	.33	.38	.35	.33	.37	.35	.33	.32
10	.37	.33 .31		.36 .33		.31	.36	.33	.31	.35	.32	.30	.35	.32	.30	.30
Job Information							Type:

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