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10 Information on airborne noise emitted by the air conditioning units - on re-
quest
Sound data can be printed on request on the technical data sheet, sample see Figure 143.
The sound power is specified as A-weighted sound power level:
-
Line 1: Sound power over the casing
Line 2: Sound power inlet
-
-
Line 3: Sound power outlet
The sound through the openings (sound power level in line 2 and 3) is the basis for the cal-
culation of the on-site sound emissions from the environment.
11 ATEX units
The ignition hazard assessment was performed according to EN 13463-1:2009 and EN
1127-1:2011.
Applied protection: EN 13463-5:2011 Protection by constructional safety "c".
11.1 General notes
Hazardous areas must be rated on the frequency and duration of the occurrence of hazard-
ous explosive atmospheres (gas / air or steam / air mixtures and / or dust / air mixtures). This
is described in Directive 1999/92/EC.
Because of this zoning an adapt AHU must be used.
The relationship between zones and category as per Table 13 described.
Group I:
Group II:
Letters:
Figure 143: Sound data information
Underground facilities
Surface installations, category 1, 2 and 3
G
gases, vapors, mists
D
dust
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