User Manual

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Siemens Building Technologies
Cerberus Division
01.2002
4.2.4 Clean room type B, 4
th
example
A cleanroom with filter fan units installed in the dropped ceiling connecting the supply-air
plenum (dropped ceiling) at the top and the return-air sideways.
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Dropped ceiling Height: 1.50m
Cleanroom 2
nd
floor Height: 2.9m
A
A
Air handling system
Air circulation fans: 320 units
Output per unit: 920m
3
/h
Total output: 294,400m
3
/h
Siting: in the dropped ceiling
36m
Fig. 11 Cross-section through the clean room type B
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AD2
HSD
View A – A
(BDH2450.1)
124 return air outlets
1.2 x 0.4m
12 air sampling holes
each tube, spacing 0.6m
0.4m
Next
AD2
system
Next
AD2
system
Fig. 12 High sensitivity air sampling smoke detection system at return air outlets