Roof fan with vertical discharge and acoustic insulation (40 mm)
Application
These fans are used for ventilation of industrial kitchens and for air extraction up to 120°C
Composition
Casing made out of AIMg3 aluminium that is resistant to seawater with protection grille.
40 mm insulation with fire class A1 according to DIN 4102-1
Turbine with backward curved impeller with blades that are made of galvanised steel plate up to type 280 and of aluminium for all other types, balanced G6.3 according to DIN ISO 1940.
External rotor motor with speed control and overheat protection to be cabled by third parties (up to and including KRFI-SN 250 E2 30)
Voltage: 230 Vac, 1 ph and 400 Vac 3 ph. (type D)
Swivel motor compartment.
Insulation class F
Motor protection class:
KRFI-SN 225 E2 30 - KRFI-SN 280 E2 30: IP54
KRFI-SN 280 D2 30 - KRFI-SN 710 D6 30: IP55
Security switch
Equipped with integrated drain pan and evacuation.
Accessories
Acoustically insulated roof socket, type RAC-I
Roof socket, type RC-I
Adapter plate, type RAP
Backdraught shutter, type RAS
Matching flange, type RIF
Flexible connector, type RFC
Transformer controller with 5 steps, type TSCTK-1
Frequency converter 3x400V in / 3x400V out, type FIS(-C)-13-B
Frequency converter 3x400V in / 3x400V out, type FIS(-C)-44-B
Order example
KRFI-SN 400 E4 30
KRFI-SN = Type of fan
400 = Size
E = 1x230V
4 = Number of poles
30 = Version
Air performance data
Q [m³/h]
50Pa
100Pa
150Pa
200Pa
250Pa
300Pa
400Pa
500Pa
600Pa
700Pa
KRFI-SN 225 E2 30
1666
1594
1516
1440
1370
1302
1126
877
407
-
KRFI-SN 250 E2 30
2107
2046
1983
1920
1856
1788
1628
1405
1172
846
KRFI-SN 280 D2 30
2640
2570
2500
2425
2375
2300
2150
1980
1775
1500
KRFI-SN 315 D4 30
2900
2825
2750
2675
2600
2500
2275
2000
1675
1300
KRFI-SN 355 D4 30
4000
3875
3725
3575
3450
3325
3050
2675
2250
1650
KRFI-SN 400 D4 30
3800
3625
3475
3300
3050
2800
2220
-
-
-
KRFI-SN 450 D4 30
6680
6440
6225
6050
5830
5650
5200
4750
4100
3325
KRFI-SN 500 D4 30
7650
7400
7150
6900
6640
6400
5900
5360
4630
3580
KRFI-SN 560 D4 30
11481
11082
10646
10202
9754
9341
8557
7656
6747
5610
KRFI-SN 630 D4 30
15092
14840
14573
14284
14013
13731
13122
12337
11397
10486
KRFI-SN 710 D6 30
18542
18299
17866
17268
16528
15707
14010
12254
9684
5659
Selection curves
Selection curves
Technical data
U [V]
P [W]
I [A]
SC
ŋT [%]
tm [°C]
tu [°C]
To [°C]
n [rpm]
Lwa [dB(A)]
Lwa 5
Lwa 6
Lwa 2
KRFI-SN 225 E2 30
1 x 230
273
2.06
TSCTK-1-30
46
120
80
-25
2850
78
76
-
KRFI-SN 250 E2 30
1 x 230
437
3.3
TSCTK-1-40
45.5
120
80
-25
2860
83
81
-
KRFI-SN 280 D2 30
3 x 400
627
1.13
FIS-4420E-0.75-B
46.2
120
50
-20
2920
86
87
-
KRFI-SN 315 D4 30
3 x 400
202
1.04
FIS-4420E-0.75-B
36.6
120
50
-20
2360
83
83
-
KRFI-SN 355 D4 30
3 x 400
312
1.25
FIS-4420E-0.75-B
46.6
120
50
-20
2060
81
82
-
KRFI-SN 400 D4 30
3 x 400
492
1
FIS-4420E-0.75-B
48.1
120
50
-20
1480
80
78
-
KRFI-SN 450 D4 30
3 x 400
901
2.3
FIS-4420E-1.5-B
57.2
120
50
-20
1640
84
84
-
KRFI-SN 500 D4 30
3 x 400
1342
2.7
FIS-4420E-1.5-B
55.2
120
50
-20
1485
84
85
-
KRFI-SN 560 D4 30
3 x 400
2420
4.7
FIS-4420E-2.2-B
58.2
120
50
-25
1440
88
89
-
KRFI-SN 630 D4 30
3 x 400
4115
8.5
FIS-4420E-4.0-B
54.9
120
40
-25
1455
95
94
-
KRFI-SN 710 D6 30
3 x 400
2768
6.9
FIS-4420E-4.0-B
59.45
120
50
-25
980
86
87
-
SC = Speed controller
ŋt = Maximum total efficiency
Tm = Maximum air temperature
Tu = Maximum ambient temperature
To = Minimum operating temperature
Lwa 2 = Casing sound power level
Lwa 5 = Sound power level @inlet
Lwa 6 = Sound power level @outlet
The sound power levels are measured according to DIN 45635 part 2 & 38
