Cut Sheet

ZR LED Troffer
Coefficients Of Utilization –
Zonal Cavity Method
RC %: 80
RW %: 70 50 30 10
RCR: 0 119 119 119 119
1 109 104 100 96
2 99 90 83 78
3 90 79 71 64
4 82 70 61 54
5 76 63 54 47
6 70 56 47 41
7 65 51 42 36
8 60 47 38 32
9 56 43 34 29
10 53 39 31 26
Effective Floor Cavity Reflectance:20%
Average Luminance Table (cd/m
2
)
Vertical Angle
Horizontal Angle
0° 45° 90°
45° 17,595 19,830 21,057
55° 16,157 19,010 20,853
65° 14,415 18,162 20,173
75° 11,715 16,396 16,707
85° 6,622 10,245 9,960
Zonal Lumen Summary
Zone Lumens % Lamp Luminaire
0-30 1,078 N/A 27.1%
0-40 1,766 N/A 44.4%
0-60 3,120 N/A 78.5%
0-90 3,973 N/A 99.9%
0-180 3976 N/A 100%
Reference https://www.creelighting.com/products/indoor/troffers/zr-series for detailed photometric data.
Photometry
ZR1440L83010V5UNV BASED ON TEST REPORT #: STD200105NBAB
Luminaire photometry has been conducted in accordance with IES LM-79-08. IES LM-79-08 specifies the entire luminaire as the source resulting in a luminaire efficiency of 100%.
0˚
20˚
50˚
70˚
426
0
1704
852
1278
90˚
0˚
90˚
Open Space
Spacing Lumen Package Initial Delivered Lumens Wattage LPW w/ft
2
Average fc
8 x 8
30L 3,470 26 133 0.39 50
40L 4,050 29 140 0.44 59
50L 4,860 36 135 0.54 70
60L 6,100 44 139 0.66 88
8 x 10
30L 3,470 26 133 0.33 42
40L 4,050 29 140 0.37 49
50L 4,860 36 135 0.46 58
60L 6,100 44 139 0.56 73
10 x 10
30L 3,470 26 133 0.26 33
40L 4,050 29 140 0.29 38
50L 4,860 36 135 0.36 46
60L 6,100 44 139 0.44 58
10 x 12
30L 3,470 26 133 0.21 26
40L 4,050 29 140 0.24 30
50L 4,860 36 135 0.29 36
60L 6,100 44 139 0.36 46
Application Reference
10' ceiling: 80/50/20 reflectances; 2.5' workplane, open room. LLF: 1.0 Initial
Open Space: 50' x 40' x 10
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