ALP LIghting (ALP Lighting & Ceiling Products, Inc.)

PLLA

ALUMINUM PARABOLIC LOUVERS, STYLES 1 & 3 (2' X 4')

Specifications

PLLA Series Aluminum Parabolic Louvers shall be as manufactured by A.L.P. Lighting & Ceiling Products, Inc. This panel shall be formed of aluminum to precise parabolic contours. Louvers to have 45° corners and assembled to rigid assembly parameters. This louver is available in a standard finish of non-iridescent Softone™. Optional finishes are low-iridescent Semi-Specular Silver, Specular Silver or Baked White Enamel.

Louver height shall be 1-1/2" nominal. Standard overall louver dimensions shall be nominal 1' x 4'. 2' x 2' and 2' x 4'. This louver is available with flexible cell sizes, minimum 2" x 2".

This louver shall have an efficiency of not less than 63% and a VCP index rating of .83 (semi-specular silver finish).

For matching aluminum parabolic baffles refer to PBLA A (page 6).

When ordering, frame top opening and overall size required.

EXAMPLE :	PLLA24STS 1/A/B
	A = 21" x 45" (frame top opening)
	B = 23" x 47" (overall size required)

Special louver sizes, cell sizes and finishes are available, contact A.L.P.

ZONAL CAVITY COEFFICIENTS OF UTILIZATION

Ceiling Wall RCR	EFFECTIVE FLOOR CAVITY REFLECTANCE = 20
	80				70				50			30			10			00
	70	50	30	10	70	50	30	10	50	30	10	50	30	10	50	30	10	00
0	76	76	76	76	74	74	74	74	71	71	71	68	68	68	65	65	65	64
1	71	68	66	64	69	67	65	63	64	63	61	62	60	59	60	58	58	56
2	66	62	58	55	64	60	57	55	58	56	53	56	54	52	54	53	51	50
3	61	5	51	48	60	55	51	47	53	49	47	51	48	46	50	47	45	44
4	56	50	45	41	55	49	44	41	47	43	40	46	43	40	45	42	39	38
5	52	45	40	36	51	44	39	36	43	39	35	41	38	35	40	37	35	33
6	48	40	35	32	47	40	35	31	39	34	31	38	34	31	37	33	31	30
7	44	37	31	28	43	36	31	28	35	31	28	34	30	27	33	30	27	26
8	41	33	28	25	40	33	28	24	32	27	24	31	27	24	30	27	24	23
9	38	30	25	22	37	30	25	22	29	25	22	29	25	22	28	24	22	21
10	35	27	22	18	34	26	22	18	26	21	18	25	21	18	24	21	18	17

VISUAL COMFORT PROBABILITY TABLE

100 FC Work Plane Illumination Work Plane FC = 100

		LUMINARIES LENGTHWISE				LUMINARIES CROSSWISE
ROOM DIM		MOUNTING HEIGHT
W	L	8.5	10	13	16	8.5	10	13	16
20	20	76	75	80	89	70	68	71	86
20	30	78	76	75	79	73	70	65	70
20	40	80	78	76	76	75	72	67	66
20	60	82	80	78	78	78	74	69	68

30	20	79	76	77	85	75	71	71	84
30	30	81	77	72	76	77	72	65	69
30	40	82	79	74	72	78	74	67	64
30	60	84	80	76	74	80	76	69	67
30	80	86	82	78	76	82	78	71	69

40	20	82	78	77	84	79	75	73	83
40	30	83	79	72	74	80	75	66	69
40	40	84	81	74	71	81	77	68	65
40	60	86	82	76	73	83	78	70	67
40	80	87	83	77	75	85	80	72	69
40	100	88	85	79	76	86	82	74	71

60	30	85	82	74	74	82	78	69	70
60	40	86	82	76	71	83	79	71	66
60	60	87	83	77	73	85	80	72	68
60	80	88	85	79	75	86	82	74	70
60	100	89	86	80	76	87	84	76	71

100	40	89	86	80	75	87	83	76	71
100	60	89	86	81	77	87	84	77	73
100	80	90	87	82	78	88	85	78	74
100	100	91	88	83	79	89	86	80	75

TS: TECHNICAL SUPPORT

Lighting Research Laboratories, Inc.

Test Report No. LRL 397-3X, Date 3/5/97.

Description: Commercially Available 2'x 4' Troffer

2/32 W T8 Lamps, 1-1/2" deep Parabolic Semi-Specular Louver.

Lumunary Watt = 60.6,

Catalog Number: Louver PLLA 24 SSS (78 cells)

Lamp Type: F32T8/TL80, Lumens: 3050, Number of Lamps: 2

*Other testing results available upon request.

Total Luminaire Efficiency:		63.6%
Plane:	0°	90°
Spacing Criteria:	1.2	1.3
Shielding Angles:	15	15

CATALOG NUMBER	DESCRIPTION	TOTAL CELLS	CELLS W L		"A" I.D.	"B" MAXIMUM O.D.
STYLE 1 (Standard Body)
PLLA 14STS1	SOFTONE™	39	3	13	8-5/8" x 44-5/8"		11-5/8" x 47-5/8"
PLLA 22STS1	SOFTONE™	36	6	6	20-5/8" x 20-5/8"		23-5/8 x 23-5/8"
PLLA 24STS1	SOFTONE™	78	6	13	20-5/8" x 44-5/8"		23-5/8" x 47-5/8"
STYLE 3 (Narrow Body)
PLLA 14STS3	SOFTONE™	26	2	13	7-1/2" x 43-1/2"		10-1/2" x 46-1/2"
PLLA 22STS3	SOFTONE™	36	6	6	19-1/2" x 19-1/2"		22-1/2" x 22-1/2"
PLLA 24STS3	SOFTONE™	78	6	13	19-1/2" x 43-1/2"		22-1/2" x 46-1/2"

ZONAL LUMEN SUMMARY

ZONE	LUMENS	% LAMP	% FIXT
0-30	1194	19.6	30.8
0-40	1927	31.6	49.7
0-60	3385	55.5	87.2
0-90	3880	63.6	100.0
90-180	0	0.0	0.0
0-180	3880	63.6	100.0

LUMINANCE DATA IN FOOTLAMBERTS

ANG. IN DEG.	AVG. O-DEG	AVG. 45-DEG.	AVG. 90-DEG.
45	2246	2143	2444
55	2020	2312	3882
65	1360	2264	2156
75	288	344	408
85	63	83	63

CANDLE POWDER DISTRIBUTION

VER. ANG	HORIZONTAL ANGLE					ZONAL LUMENS
VER. ANG	0.0	22.5	45.0	67.5	90.0	ZONAL LUMENS
0.0	1430	1430	1430	1430	1430
5.0	1421	1424	1427	1433	1433	136
15.0	1377	1398	1440	1502	1539	411
25.0	1268	1325	1421	1476	1474	647
35.0	1106	1209	1239	1122	1082	732
45.0	873	979	833	866	950	695
55.0	637	660	729	1082	1224	763
65.0	316	356	526	478	501	439
75.0	41	47	49	55	58	53
85.0	3	3	4	4	3	4
90.0	0	0	0	0	0

ALP Lighting - Page 5