ICAM by Xtralis ICAM ILS-2 Product Guide
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9 EN 54-20 Sensitivity Classes
The detectors used in the ILS-2 have been independently tested and certified for use in EN54-20 approved
Class A, B or C installations. The following information will show the requirements for compliance in each
category.
Detector Threshold
Maximum Number of Holes per Class, per Pipe
Class C Class B Class A
1 18 6 3
2 9 3 1
3 4 1 N/A
4 1 N/A N/A
5 or above N/A N/A N/A
Table 9-1: Sensitivity and Maximum Holes per Class
Notes:
l Table 9-1 shows the limits that should not be exceeded for the three sensitivity classes. Figures are
based upon the configurations shown in Section 4.8.
l All pipe network designs should be verified using the latest version of the ASPIRE design tool. This can
be downloaded from www.xtralis.com.
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