Data Sheet

Technical System Catalogue/Climate control
TopTherm fan-and-filter units
3 - 6
Project planning
The following applies when calculating the volumetric air flow:
Performance diagram SK 3243. . . . [50 Hz]
Performance diagram SK 3243. . . . [60 Hz]
Further performance curves may be found on the Internet.
V = f 
Qv
ΔT
.
.
0
50
100
150
200
250
300
0 100 200 300 400 500 600
ΔPst
V
.
V = Volumetric flow (m
3
/h)
ΔP
st
= Stat. pressure difference (P
a
)
.
SK 3243.XXX
with standard filter
SK 3243.XXX with
standard and fine filter
SK 3243.XXX
with hose-proof hood
1 x outlet filter
SK 3243.200
1 x outlet filter
SK 3243.200
with hose-proof hood
2 x outlet filters
SK 3243.200
0
50
100
150
200
250
300
0 100 200 300 400 500 600
ΔPst
V
.
V = Volumetric flow (m
3
/h)
ΔP
st
= Stat. pressure difference (P
a
)
.
SK 3243.XXX
with standard filter
SK 3243.XXX with
standard and fine filter
SK 3243.XXX
with hose-proof hood
1 x outlet filter
SK 3243.200
1 x outlet filter
SK 3243.200
with hose-proof hood
2 x outlet filters
SK 3243.200
Selection diagram
The styling of the vent louvres in Rittal fan-and-filter units guaran-
tees exemplary stability of the air volumes in relation to pressure
loss. The correct fan-and-filter unit has been chosen if the speci-
fied heat loss is dissipated whilst complying with the desired
maximum enclosure internal temperature.
V
.
Q
V
.
100
200
300
400
500
600
800
1000
1500
2000
3000
2500
Δ T 35 K
Δ T 40 K
Δ T 30 K
Δ T 20 K
Δ T 15 K
Δ T 10 K
Δ T 5 K
Δ T 25 K
30 50 70 90 300 500 700
10 20 40 60 80 100 200 400 600 800
V = Volumetric flow (m
3
/h)
Q
V
= Heat loss (W)
.
.
f = 3.1 m
3
 K/Wh at h = ( 0 to 100)
f = 3.2 m
3
 K/Wh at h = (100 to 250)
f = 3.3 m
3
 K/Wh at h = (250 to 500)
f = 3.4 m
3
 K/Wh at h = (500 to 750)
f = 3.5 m
3
 K/Wh at h = (750 to 1000)
f = Compensating factor
h = Height above sea level [m]