User Manual

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Siemens Building Technologies
Cerberus Division
01.2002
4.2.2 Clean room type B, 2
nd
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 plenum (raised floor) at the bottom.
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Dropped ceiling Height: 0.6m
Cleanroom 2
nd
floor Height: 3.4m
Raised floor Height: 0.8m
A
A
Air handling system
Air circulation fans: 1300 units
Output per unit: 800m
3
/h
Total output: 1,040,000m
3
/h
Siting: in the dropped ceiling
50m
Fig. 6 Cross-section through the clean room type B
AD2
HSD
Raised floor (air return
area, height 0.8m)
0.6m
View A – A
(BDH2450.1)
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Next
AD2
system
Next
AD2
system
12 air sampling holes
each tube, spacing 0.5m
Fig. 7 High sensitivity air sampling smoke detection system in raised floor