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European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e2s.com Fax: +44 (0)208 740 4200
Document No. D211-00-401-IS-SC Issue E 02-03-2020 Sheet 7 of 10
14) Light output for Fire alarm use
In order to meet the requirements for UL 1971, (D2xB1LD2DC024 when used with 1Hz, 1.5Hz or 2Hz Flash rates and without plastic
lens cover and wire guard only), the installation must be carried out to the correct NFPA standards and guidelines.
14.1
Horizontal Light Output Dispersion for wall mounting – public mode
0°
15°
15°
30°
45°
60°
75°
90°
90°
30°
45°
60°
75°
Fig. 12 – Horizontal dispersion angles for wall mounting
Table 3 - Horizontal Light Output Dispersion for Wall Mounting
Viewing Angle
% Of Rating
Intensity (cd) at
1Hz flash rate
Intensity (cd) at
1.5Hz flash rate
Intensity (cd) at
2Hz flash rate
0
⁰
100 38.38 35.87 25.97
5-25
⁰
90 34.54
32.28
23.37
30-45
⁰
75 28.79
26.90
19.48
50
⁰
55 21.11
14.28
14.28
55
⁰
45 17.27
11.69
11.69
60
⁰
40 15.35
10.39
10.39
65
⁰
35 13.43 9.09 9.09
70
⁰
35 13.43 9.09 9.09
75
⁰
30 11.51 7.79 7.79
80
⁰
30 11.51 7.79 7.79
85
⁰
25 9.60 6.49 6.49
90
⁰
25 9.60 6.49 6.49
Compound 45
⁰
to Right
24 9.21 8.61 6.23
Compound 45
⁰
to Left
24 9.21 8.61 6.23
