Rf-t ONE-X CU4 User manual

www.rft.be
en
Rf-Technologies nv Lange Ambachtstraat 40 9860 Oosterzele Belgium Tel [phone] Fax [phone] [email protected]
0749
C6-EN-M 11/2019
CU4
Rectangular re damper 240'

2Table of content
Table of content
Declaration of performance 3
Product presentation CU4 4
Range and dimensions CU4 4
Variant CU4L 5
Range and dimensions CU4L 5
Evolution - kits 6
Options - at the time of order 8
Flange types - at the time of order 9
Storage and handling 10
Installation 10
Installation at a minimal distance from another damper or from an adjacent supporting construction 10
Installation in rigid wall 11
Operation and mechanisms 12
Electrical connection 16
Weights 18
Selection graphs 20
Example 20
Selection data 21
Sample order 22
Approvals and certificates 22
Explanation of the abbreviations and pictograms
Wn = nominal width
Hn = nominal height
Dn = nominal diameter
E = integrity
I = thermal insulation
S = smoke leakage
Pa = pascal
ve = vertical wall penetration
ho = horizontal floor penetration
o -> i = meets the criteria from the outside
(o) to the inside (i)
i <-> o = fire side not important
V AC = Volt alternating current
V DC = Volt direct current
E.TELE = power supply magnet
E.ALIM = power supply motor
V = volt
W = watt
Auto = automatic
Tele = remote controlled
Pnom = nominal capacity
Pmax = maximum capacity
GKB (type A) / GKF (type F): "GKB"
stands for standard plasterboards (type
A according to EN 520) while "GKF"
plasterboards offer a higher fire resistance
for a similar plate thickness (type F
according to EN 520)
Cal-Sil = calcium silicate
OP = option (delivered with the product)
KIT = kit (delivered separately for repair or
upgrade)
PG = connection flange to the duct
Sn = free air passage
ζ [-] = pressure loss coefficient
Q = air flow
∆P = static pressure drop
v = air speed in the duct
Lwa = A-weighted sound power level
Lw oct = sound power level per octave
midband
dB(A) = A-weighted decibel value
∆L = correction factor
240 fire resistance 240 minutes suitable for built-in installation
intermediate dimensions on request

3
Declaration of performance
E-09/2018CE_DoP_Rf-t_C6_EN
DECLARATION OF PERFORMANCE Declarationofperformance CE_DoP_Rf-t_C6_EN E-09/2018
1. Unique identication code of the product-type: CU4 2. Intended use/es: Rectangular re damper to be used in conjunction with partitions to maintain re compartments in heating, ventilating and air conditioning installations. 3. Manufacturer: Rf-Technologies NV, Lange Ambachtstraat 40, B-9860 Oosterzele 4. System/s of AVCP: System 1 5. Harmonised standard / European Assessment Document; notied body / European
Technical Assessment, Technical Assessment Body, notied body; certicate of constancy of performance:
EN 15650:2010, BCCA with identication number 0749; BCCA-0749-CPR-BC1-606-0464-15650.04-0464; BCCA-0749-CPR-BC1-606-0464-15650.14-0464
6. Declared performance according to EN 15650:2010 (Fire resistance according to EN 1366-2 and classications according to EN 13501-3)
Essential characteristics Performance Range Wall type Wall Sealing Installation Classication
200x200 mm ≤ CU4 ≤ 1200x800 mm
Rigid wall Aerated concrete ≥ 150 mm Fire resistant plaster 1 EI 240 (vei no) S - (500 Pa)
1 Type of installation: built-in 0/180°
Nominal activation conditions/sensitivity: Pass Response delay (response time): closure time Pass Operational reliability: cycling
CFTH - 50 cycles; MANO - 300 cycles; B(L) F(T) - 10000 cycles; BFL(T) - 10000 cycles; BFN(T) - 10000 cycles; ONE - 10000 cycles; UNIQ - 10000 cycles
Durability of response delay: Pass Durability of operational reliability: Pass Protection against corrosion according to EN 60068-2-52: Pass Damper casing leakage according to EN 1751: ≥ class B
Harmonised standard
EN 15650:2010
The performance of the product identied above is in conformity with the set of declared performance/s.This declaration of performance is issued, in accordance with Regulation (EU) No 305/2011, under the sole responsibility of the manufacturer identi- ed above.
Signed for and on behalf of the manufacturer by:
Mathieu Steenland, Technical Manager
Oosterzele, 09/2018

4Product presentation CU4
Product presentation CU4
Rectangular fire damper with a 240 minutes fire resistance in concrete walls. Its refractory casing is made of asbestos free panels,
which are resistant to humidity.
Fire dampers are installed where air ducts penetrate fire-resistant compartment walls. Their role is to restore the fire resistance grade
of the penetrated wall and to prevent smoke propagation. Fire dampers are distinguished by their degree of fire resistance, by their
aeraulic properties as well as by their installation ease. Rf-Technologies' fire dampers are all CE marked. They can be equipped with
various types of mechanisms depending on the specific needs linked to the project or to the local regulations.
5fire resistance 240 minutes
∎suitable for built-in installation
∎air tightness in accordance with EN 1751: class B (class C in
option )
∎tested according to EN 1366-2 up to 500 Pa
∎operating mechanism outside the wall
∎maintenance-free
∎for indoor use
∎operating temperature: max. 50°C
∎intermediate dimensions on request
∎suitable for installation in rigid wall
240
1. connection flange PG30
2. casing made of refractory material
3. damper blade
4. operating mechanism
5. sealing cold smoke
6. blade bumper
7. intumescent strip
8. transmission with locking (open/closed)
9. fusible link
10.product identification
8
9
4
10
6
3
2
1
5
7
Range and dimensions CU4
Wn/Hn per step of 50 mm; intermediate dimensions are subject to extra cost (heights between ≥ 275 and ≤ 299 mm are not
possible).
Exceeding blade: X = on the mechanism side, Y = on the wall side
400
65 H≥500 55 H<500
Y X
(Wn-6)x(Hn-6)
(Wn+28)x(Hn+28)
Hn [mm] 300 350 400 450 500 550 600 650 700 750 800
x - - - - - - 25 50 75 100 125
y 1 26 51 51 101 126 151 176 201 226 251
≥ ≤
(Wn x Hn)
mm 200x200 1200x800

5
Variant CU4L
Variant CU4L
Damper with a tunnel casing extension at one or both sides so that the damper blade does not exceed the tunnel. This version allows
to connect a grill or a bend directly on the damper flange or to use a circular connection.
Range and dimensions CU4L
Wn/Hn per step of 50 mm; intermediate dimensions are subject to extra cost (heights between ≥ 275 and ≤ 299 mm are not
possible).
Exceeding blade: X = on the mechanism side, Y = on the wall side
102,5+b
227,5+a
yx
55/65
(Hn-6) x (Wn-6)
L=330+x+y
≥ ≤
(Wn x Hn)
mm 200x200 1200x800
Hn < 300 mm Hn ≥ 300 mm
P
Z
Q
Wn P
ZQ
Wn
CFTH ONE BFL(T)
P78 104 96
Q180 191 110
Z62 47 74
CFTH ONE BFL(T) BFN(T)
P78 104 96 100
Q180 191 110 110
Z157 147 180 180

6Evolution - kits
Evolution - kits
KITS CFTH Automatic unlocking mechanism CFTH with FCU and without FTH 72
KITS BFL24 Spring return actuator BFL 24V
KITS BFL24-ST Spring return actuator BFL 24V with plug (ST)
KITS BFLT24 Spring return actuator BFL 24V with thermo-electric fuse (T)
KITS BFLT24-ST Spring return actuator BFL 24V with thermo-electric fuse (T) and plug (ST)
KITS BFL230 Spring return actuator BFL 230V
KITS BFLT230 Spring return actuator BFL 230V with thermo-electric fuse (T)
KITS BFN24 Spring return actuator BFN 24V (BFN kits must be used instead of BFL kits for fire dampers
produced before 1/7/2015)
KITS BFN24 Spring return actuator BFN 24V

7
Evolution - kits
KITS BFN24-ST Spring return actuator BFN 24V with plug (ST)
KITS BFNT24 Spring return actuator BFN 24V with thermo-electric fuse (T)
KITS BFNT24-ST Spring return actuator BFN 24V with thermo-electric fuse (T) and plug (ST)
KITS BFN230 Spring return actuator BFN 230V
KITS BFNT230 Spring return actuator BFN 230V with thermo-electric fuse (T)
KITS BF24 Spring return actuator BF 24V (BF kits must be used instead of BFN kits for fire dampers
produced before 1/7/2015)
KITS ONE T 24 FDCU Spring return actuator ONE 24V (with fusible link T) + unipolar beginning- and end-of-
range switch
KITS ONE T 24 FDCB Spring return actuator ONE 24V (with fusible link T) + bipolar beginning- and end-of-
range switch
KITS ONE T 230 FDCU Spring return actuator ONE 230V (with fusible link T) + unipolar beginning- and end-of-
range switch

8Options - at the time of order
KITS ONE T 230 FDCB Spring return actuator ONE 230V (with fusible link T) + bipolar beginning- and end-of-
range switch
KITS FDC CFTH 1 limit switch (FCU/DCU/FCB/DCB)
KITS SN2 BFL/BFN Auxiliary limit switch 'open/closed'
KITS FTH72 Fusible link FTH 72°C (for CFTH)
KITS ZBAT 72 Black spare part for thermo-electric fuse for BFLT/BFNT
FUS72 ONE Fusible link 72°C
MECT Testbox for mechanisms 24/48 V (magnet, motor, beginning and end of range switches)
Options - at the time of order
EN 1751
C
EN1751_C Air-tightness class C

9
Flange types - at the time of order
Flange types - at the time of order
33
30 30
3333
400
HnxWn
(Hn-6)x(Wn-6)
PG30 Connection to ducts with 30 mm flanges (either by sliding profile,
or with bolts, or with clamps). Elliptical holes Ø 8,5 x 16 mm.
43 43
400
4040
43
HnxWn
(Hn-6)x(Wn-6)
PG40 Connection to ducts with 40 mm flanges.
Elliptical holes Ø 8,5 x 16 mm.
23
2020
400
23 23
HnxWn
(Hn-6)x(Wn-6)
PG20 Connection to ducts with 20 mm flanges.
Elliptical holes Ø 6,5 x 16 mm.
40
HnxWn
(Hn-6)x(Wn-6)
L-70
PM Connection to ducts by insertion. This type of frame is used in
case of lack of space for a standard PG30 frame.
(Hn-6)x(Wn-6)
+L-70
PP No connection. This type of frame is used on one side of a damper
that ends into a room.
Øn-2
e L
L1
e
n+30
PRJ Circular connection with rubber sealing ring.
210
W+62
H+62
PPT Grill. Very well suited as protection grill on the end piece of a duct
system.

10 Storage and handling
Storage and handling
As this product is a safety element, it should be stored and handled with care.
Avoid:
• any kind of impact or damage
• contact with water
• deformation of the casing
It is recommended:
• to unload in a dry area
• not to flip or roll the product to move it
• not to use the damper as a scaffold, working table, etc.
• not to store smaller dampers inside larger ones
Installation
General points
∎The installation must comply with the installation manual delivered with the product and the classification report.
∎Axis orientation: see the declaration of performance.
∎Avoid obstruction of adjoining ducts.
∎Product installation: always with closed damper blade.
∎Verify if the blade can move freely.
∎Please observe safety distances with respect to other construction elements. The operating mechanism must also remain
accessible: allow for a clearance of 200 mm around the housing.
∎The air tightness class will be maintained if the damper is installed according to the installation manual.
∎Rf-t fire dampers are always tested in standardised constructions according to EN 1366-2. The achieved results are valid for similar
supporting constructions with a fire resistance, thickness and density equal or superior to the supporting construction used
during the test.
∎The damper must remain accessible for inspection and maintenance.
∎Schedule at least two running visual checks each year.
2017
2018
2019
2020
2021
TEST
 | 
 | 
 | 
 | 
 | 
Installation at a minimal distance from another damper or from an adjacent supporting construction
≥ 75 mm
≥ 200 mm
1. Principle
According to the European test standard, a fire damper must
be installed at a minimum distance of 75 mm from an adjacent
wall and 200 mm from another damper, unless the solution was
tested at a shorter distance.
1

11
Installation
Installation in rigid wall
The product was tested and approved in:
Range Wall type Sealing Classication
200x200 mm ≤ CU4 ≤ 1200x800 mm Rigid wall Aerated concrete ≥ 150 mm Fire-resistant gypsum EI 240 (vei no) S - (500 Pa)
400
240
≥150
re resistant plaster
≥Hn+100
≥Wn+100
!
TEST!
Maintenance
∎No specific maintenance required.
∎Schedule at least two running visual checks each year.
∎Remove dust and all other particles before start-up.
∎Follow the local maintenance regulations (i.e. BS9999 Annex V; NF S 61-933) and EN13306.
∎Read the maintenance instructions on our website: https://www.rft.be/assets//PIM/DOCUMENTS/BROCHURE%20KITS/BRO_K139_
MAINTENANCE_C.pdf
∎Use the damper at up to 95% humidity, non-condensing.
∎The fire damper can be cleaned with a dry or slightly damp cloth. It is forbidden to use abrasive cleaners or mechanical cleaning
techniques (brush).
1 2
3

12 Operation and mechanisms
Operation and mechanisms
CFTH Mechanism with fusible link
The unlocking mechanism CFTH automatically unlatches the damper blade when the temperature in the duct rises above 72°C. The
damper can also be unlocked and reset manually.
1. unlocking button
2. resetting handle
3. cable entrance 1
3
2
Options - at the time of order
FCU Limit switch 'closed'
FDCU Unipolar limit switch 'open/closed'
FDCB Bipolar auxiliary limit switch 'open/closed'
Unlocking
∎manual unlocking: use the unlocking button (1).
∎automatic unlocking: when the fusible link melts at 72° C.
∎remote unlocking: n/a
Resetting
∎manual resetting: use the enclosed Hex key and turn clockwise(2).
∎motorised resetting: n/a
Caution:
The mechanism may never be tested on its own, without being attached to the damper. Such a test might damage the
mechanism or the operator might be injured.

13
Operation and mechanisms
ONE Spring return actuator for remote control
The spring-return actuator ONE is designed to easily operate Rf-t fire dampers of all sizes, automatically or remotely. Five models are
available, 24 or 230 volt, with FDCU or FDCB position switches; and 24 volt with plug (ST).
1. unlocking button
2. blade position indicator
3. LED
4. battery compartment to reset motor
5. plug (ST)
2
1
3
4
Options - at the time of order
IXI-R1 Universal field controller (Modbus, BACnet or analog connection), pre-mounted on the damper.
IXI-R2-24 Universal field controller (Modbus, BACnet), pre-mounted on the damper and with a connection for a second
damper.
IXI-R2-230 Universal field controller (Modbus, BACnet), pre-mounted on the damper and with a connection for a second
damper.
Unlocking
∎manual unlocking: shortly press the unlocking button (1) once.
∎automatic unlocking: the fusible link reacts as soon as the temperature in the duct reaches 72°C.
∎remote unlocking: by interrupting the power supply.
Resetting
∎manual resetting: open the battery compartment (4) and press a 9V battery against the contact springs. Hold this position until
the LED (3) emits a continuous light. Check whether the indicator (2) shows that the damper blade is in the open position. Remove
the battery, the LED fades away. Close the battery compartment.
∎motorised resetting: switch off the power supply for at least 5 sec. Power the actuator (respect the prescribed voltage) for at least
75 sec. The resetting stops automatically when the end of range is reached (damper open).
Caution:
If the LED (3) flickers fast (3x/sec.), the battery is discharged: use a new battery.
If the LED (3) flickers slowly (1x/sec), the resetting is in progress.
If the LED (3) is continuously on, the resetting is complete and the motor is powered.
If the actuator detects voltage on the power cable, a brief contact of the battery is enough to start the resetting process.
The power supply of this actuator cannot be individually replaced. If the cable is damaged, the whole unit must be discarded
and replaced.
The housing of the mechanism contains a temperature sensor. When the temperature in the housing exceeds 72°C, the
mechanism unlocks. The LED flashes twice per second. When the temperature drops below 72°C, the mechanism can only be
reset in a motorised manner after a manual reset (with a battery).
The end of range switches need 1 second after operation to adopt a stable position.
Make sure the thermal trigger device is present in the actuator. The actuator might not function properly if this is not the case.
prod. < 1/7/2015
prod. ≥ 1/7/2015
CR60(1s)
CR120
CU-LT
CU-LT-1s
CR2≤400
CU2≤1200
CR2>400
CU2>1200
CR60(1s)
CR120(1s)
CU-LT
CU-LT-1s
CR2≤400
CU2≤1200
CR2>400
CU2>1200
Kit ONE
      

14 Operation and mechanisms
BFL(T) Remotely controlled spring return actuator
The spring return actuator BFL(T) is specially designed to remotely control fire dampers. The BFL(T) model is intended for fire
dampers with smaller dimensions (ø ≤ 400 mm or W+H ≤ 1200 mm/1400 mm for CU-LT, CU-LT-1s).
1. locking button
2. plug (ST)
3. access for manual resetting
4. thermo-electric tripping device (T)
1
3
4
2
Options - at the time of order
SN2 BFL/BFN Auxiliary limit switch 'open/closed'
IXI-R1 Universal field controller (Modbus, BACnet or analog connection), pre-mounted on the damper.
IXI-R2-24 Universal field controller (Modbus, BACnet), pre-mounted on the damper and with a connection for a second
damper.
IXI-R2-230 Universal field controller (Modbus, BACnet), pre-mounted on the damper and with a connection for a second
damper.
Unlocking
∎manual unlocking: place the locking button on “unlock”. (In case of BFLT: the damper can alternatively be unlocked by pushing
the “test” button on the thermo-electric fuse)
∎automatic unlocking: the thermo-electric fuse reacts as soon as the temperature reaches 72°C (type BFLT).
∎remote unlocking: by interrupting the power supply.
Caution:
The thermo-electric fuse will not move the damper into its safety position (when the temperature reaches 72°C) if the motor
is not powered.
Resetting
∎manual resetting: turn the enclosed handle anti-clockwise. To block the motor, place the locking button on “lock”
∎motorised resetting: switch off the power supply for at least 10 seconds. Supply the actuator (respect the prescribed voltage) for
at least 75 seconds. The resetting stops automatically when the end of range is reached (damper open) - it takes about 60 seconds
to reset the damper - or when the power supply is interrupted.
Caution:
Do not use a drill or screwing machine.
Stop as soon as the motor is completely rearmed (end of range).
prod. < 1/7/2015
prod. ≥ 1/7/2015
CR60(1s)
CR120
CU-LT
CU-LT-1s
CR2≤400
CU2≤1200
CR2>400
CU2>1200
CR60(1s)
CR120 (1s)
CU-LT
CU-LT-1s
CR2≤400
CU2≤1200
CR2>400
CU2>1200
Kit BFL



Kit BFN




Kit BF


15
Operation and mechanisms
BFN(T) Remotely controlled spring return actuator
The spring return actuator BFN(T) is specially designed to remotely control fire dampers. The BFN(T) model is intended for fire
dampers with large dimensions (ø > 400 mm (CR2) or W+H > 1200 mm (CU2, CA2, CU2-15, CU4)) or for dampers CU-LT(-1s), CR60,
CR120 with a production date before 1 July 2015.
1. locking button
2. plug (ST)
3. access for manual resetting
4. thermo-electric tripping device (T)
1
3
4
2
Options - at the time of order
SN2 BFL/BFN Auxiliary limit switch 'open/closed'
IXI-R1 Universal field controller (Modbus, BACnet or analog connection), pre-mounted on the damper.
IXI-R2-24 Universal field controller (Modbus, BACnet), pre-mounted on the damper and with a connection for a second
damper.
IXI-R2-230 Universal field controller (Modbus, BACnet), pre-mounted on the damper and with a connection for a second
damper.
Unlocking
∎manual unlocking: place the locking button on “unlock”. (In case of BFNT: the damper can alternatively be unlocked by pushing
the “test” button on the thermo-electric fuse)
∎automatic unlocking: the thermo-electric fuse reacts as soon as the temperature reaches 72°C (type BFNT).
∎remote unlocking: by interrupting the power supply.
Caution:
The thermo-electric fuse will not move the damper into its safety position (when the temperature reaches 72°C) if the motor
is not powered.
Resetting
∎manual resetting: turn the enclosed handle anti-clockwise. To block the motor, place the locking button on “lock”
∎motorised resetting: switch off the power supply for at least 10 seconds. Supply the actuator (respect the prescribed voltage) for
at least 75 seconds. The resetting stops automatically when the end of range is reached (damper open) - it takes about 60 seconds
to reset the damper - or when the power supply is interrupted.
Caution:
Do not use a drill or screwing machine.
Stop as soon as the motor is completely rearmed (end of range).
Caution:
The mechanism may never be tested on its own, without being attached to the damper. Such a test might damage the
mechanism or the operator might be injured.
prod. < 1/7/2015
prod. ≥ 1/7/2015
CR60(1s)
CR120
CU-LT
CU-LT-1s
CR2≤400
CU2≤1200
CR2>400
CU2>1200
CR60(1s)
CR120 (1s)
CU-LT
CU-LT-1s
CR2≤400
CU2≤1200
CR2>400
CU2>1200
Kit BFL



Kit BFN




Kit BF


16 Electrical connection
Electrical connection
CFTH ONE BFL(T) BFN(T)
FC
DC
FC
DC
10987
5616151413 11 12
10987
5616151413 11 12
DCU FCU DCB FCB
DC : Switch open position re damper
FC : Switch closed position re damper
FC
FC
DC
DC
FC
DC
24VDC
24VAC
230VACN L
65
4
3
12
6543
12
M
DC : Switch open position re damper
FC : Switch closed position re damper
violet
red
red
white
orange
pink
grey
black
FC
FC
DC
DC
FC
DC
24VDC
24VAC
230VACN L
65
4
3
12
6543
12
M
12
DC : Switch open position re damper
FC : Switch closed position re damper
violet
red
red
white
orange
pink
grey
black
FC
FC
DC
DC
FC
DC
24VDC
24VAC
230VACN L
65
4
3
12
6543
12
M
12
DC : Switch open position re damper
FC : Switch closed position re damper
violet
red
red
white
orange
pink
grey
black
MEC Nominal voltage motor Nominal voltage magnet Power consumption
(stand-by)
Power consumption
(operating) Standard switches Resetting time motor Running time spring
Noise level
motor
Noise level
spring Cable supply / control Cable auxiliary switch Protection
class
CFTH N/A N/A N/A N/A 1mA...6A, DC 5V...AC 250V N/A 1 s N/A N/A IP 42
ONE T 24 FDCU 24 V AC/DC (-10/+20%) N/A 0,28W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² 1 m, 6 x 0.75 mm² IP 54
ONE T 24 FDCB 24 V AC/DC (-10/+20%) N/A 0,28W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² (2x) 1 m, 6 x 0,75 mm² IP 54
ONE T 230 FDCU 230 V AC (-15/+15%) N/A 0,57W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² 1 m, 6 x 0.75 mm² IP 54
ONE T 230 FDCB 230 V AC (-15/+15%) N/A 0,57W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² (2x) 1 m, 6 x 0,75 mm² IP 54
ONE T 24 FDCU ST 24 V AC/DC (-10/+20%) N/A 0,28W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² 1 m, 6 x 0.75 mm² IP 54
BFL24 24 V AC/DC N/A 0,7W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFL24-ST 24 V AC/DC N/A 0,7W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFLT24 24 V AC/DC N/A 0,8W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFLT24-ST 24 V AC/DC N/A 0,8W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFL230 230 V AC N/A 1,1W 3,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFLT230 230 V AC N/A 1,4W 4W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFN24 24 V AC/DC N/A 1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFN24-ST 24 V AC/DC N/A 1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFNT24 24 V AC/DC N/A 1,1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFNT24-ST 24 V AC/DC N/A 1,1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFN230 230 V AC N/A 1,5W 5W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFNT230 230 V AC N/A 1,8W 5,5W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54

17
Electrical connection
Electrical connection
CFTH ONE BFL(T) BFN(T)
FC
DC
FC
DC
10987
5616151413 11 12
10987
5616151413 11 12
DCU FCU DCB FCB
DC : Switch open position re damper
FC : Switch closed position re damper
FC
FC
DC
DC
FC
DC
24VDC
24VAC
230VACN L
65
4
3
12
6543
12
M
DC : Switch open position re damper
FC : Switch closed position re damper
violet
red
red
white
orange
pink
grey
black
FC
FC
DC
DC
FC
DC
24VDC
24VAC
230VACN L
65
4
3
12
6543
12
M
12
DC : Switch open position re damper
FC : Switch closed position re damper
violet
red
red
white
orange
pink
grey
black
FC
FC
DC
DC
FC
DC
24VDC
24VAC
230VACN L
65
4
3
12
6543
12
M
12
DC : Switch open position re damper
FC : Switch closed position re damper
violet
red
red
white
orange
pink
grey
black
MEC Nominal voltage motor Nominal voltage magnet Power consumption
(stand-by)
Power consumption
(operating) Standard switches Resetting time motor Running time spring
Noise level
motor
Noise level
spring Cable supply / control Cable auxiliary switch Protection
class
CFTH N/A N/A N/A N/A 1mA...6A, DC 5V...AC 250V N/A 1 s N/A N/A IP 42
ONE T 24 FDCU 24 V AC/DC (-10/+20%) N/A 0,12W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² 1 m, 6 x 0.75 mm² IP 54
ONE T 24 FDCB 24 V AC/DC (-10/+20%) N/A 0,12W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² (2x) 1 m, 6 x 0,75 mm² IP 54
ONE T 230 FDCU 230 V AC (-15/+15%) N/A 0,12W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² 1 m, 6 x 0.75 mm² IP 54
ONE T 230 FDCB 230 V AC (-15/+15%) N/A 0,12W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² (2x) 1 m, 6 x 0,75 mm² IP 54
ONE T 24 FDCU ST 24 V AC/DC (-10/+20%) N/A 0,12W 4,2W 1mA...1A 60V < 75 s (cabled) / <85 s (battery) < 30 s < 58 dB (A) < 60 dB (A) 1 m, 2 x 0.75 mm² 1 m, 6 x 0.75 mm² IP 54
BFL24 24 V AC/DC N/A 0,7W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFL24-ST 24 V AC/DC N/A 0,7W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFLT24 24 V AC/DC N/A 0,8W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFLT24-ST 24 V AC/DC N/A 0,8W 2,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFL230 230 V AC N/A 1,1W 3,5W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFLT230 230 V AC N/A 1,4W 4W 1mA...3A, AC 250V < 60 s 20 s < 43 dB (A) < 62 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFN24 24 V AC/DC N/A 1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFN24-ST 24 V AC/DC N/A 1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFNT24 24 V AC/DC N/A 1,1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.34 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFNT24-ST 24 V AC/DC N/A 1,1W 4W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFN230 230 V AC N/A 1,5W 5W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54
BFNT230 230 V AC N/A 1,8W 5,5W 1mA...3A, AC 250V < 60 s 20 s ≤ 55 dB (A) ca. 70 dB (A) 1 m, 2 x 0.75 mm² (halogen-free) 1 m, 6 x 0.75 mm² (halogen-free) IP 54

18 Weights
Weights
CU4 + CFTH
Hn\Wn [mm] 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
200 kg 11,1 12,3 13,5 14,8 16,0 17,2 18,4 19,7 20,9 22,1 23,3 24,5 25,8 27,0 28,2 29,4 30,7 31,9 33,1 34,3 35,5
250 kg 12,3 13,7 15,0 16,3 17,7 19,0 20,4 21,7 23,1 24,4 25,7 27,1 28,4 29,8 31,1 32,5 33,8 35,1 36,5 37,8 39,2
300 kg 13,5 15,0 16,5 17,9 19,4 20,9 22,3 23,8 25,2 26,7 28,2 29,6 31,1 32,5 34,0 35,5 36,9 38,4 39,9 41,3 42,8
350 kg 14,8 16,3 17,9 19,5 21,1 22,7 24,3 25,8 27,4 29,0 30,6 32,2 33,7 35,3 36,9 38,5 40,1 41,7 43,2 44,8 46,4
400 kg 16,0 17,7 19,4 21,1 22,8 24,5 26,2 27,9 29,6 31,3 33,0 34,7 36,4 38,1 39,8 41,5 43,2 44,9 46,6 48,3 50,0
450 kg 17,2 19,0 20,9 22,7 24,5 26,3 28,1 30,0 31,8 33,6 35,4 37,2 39,1 40,9 42,7 44,5 46,3 48,2 50,0 51,8 53,6
500 kg 18,4 20,4 22,3 24,3 26,2 28,1 30,1 32,0 34,0 35,9 37,8 39,8 41,7 43,7 45,6 47,5 49,5 51,4 53,4 55,3 57,2
550 kg 19,7 21,7 23,8 25,8 27,9 30,0 32,0 34,1 36,1 38,2 40,3 42,3 44,4 46,4 48,5 50,6 52,6 54,7 56,7 58,8 60,9
600 kg 20,9 23,1 25,2 27,4 29,6 31,8 34,0 36,1 38,3 40,5 42,7 44,9 47,0 49,2 51,4 53,6 55,8 57,9 60,1 62,3 64,5
650 kg 22,1 24,4 26,7 29,0 31,3 33,6 35,9 38,2 40,5 42,8 45,1 47,4 49,7 52,0 54,3 56,6 58,9 61,2 63,5 65,8 68,1
700 kg 23,3 25,7 28,2 30,6 33,0 35,4 37,8 40,3 42,7 45,1 47,5 49,9 52,3 54,8 57,2 59,6 62,0 64,4 66,9 69,3 71,7
750 kg 24,5 27,1 29,6 32,2 34,7 37,2 39,8 42,3 44,9 47,4 49,9 52,5 55,0 57,5 60,1 62,6 65,2 67,7 70,2 72,8 75,3
800 kg 25,8 28,4 31,1 33,7 36,4 39,1 41,7 44,4 47,0 49,7 52,3 55,0 57,7 60,3 63,0 65,6 68,3 71,0 73,6 76,3 78,9
CU4 + ONE T
Hn\Wn [mm] 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
200 kg 11,9 13,1 14,3 15,6 16,8 18,0 19,2 20,5 21,7 22,9 24,1 25,3 26,6 27,8 29,0 30,2 31,5 32,7 33,9 35,1 36,3
250 kg 13,1 14,5 15,8 17,1 18,5 19,8 21,2 22,5 23,9 25,2 26,5 27,9 29,2 30,6 31,9 33,3 34,6 35,9 37,3 38,6 40,0
300 kg 14,3 15,8 17,3 18,7 20,2 21,7 23,1 24,6 26,0 27,5 29,0 30,4 31,9 33,3 34,8 36,3 37,7 39,2 40,7 42,1 43,6
350 kg 15,6 17,1 18,7 20,3 21,9 23,5 25,1 26,6 28,2 29,8 31,4 33,0 34,5 36,1 37,7 39,3 40,9 42,5 44,0 45,6 47,2
400 kg 16,8 18,5 20,2 21,9 23,6 25,3 27,0 28,7 30,4 32,1 33,8 35,5 37,2 38,9 40,6 42,3 44,0 45,7 47,4 49,1 50,8
450 kg 18,0 19,8 21,7 23,5 25,3 27,1 28,9 30,8 32,6 34,4 36,2 38,0 39,9 41,7 43,5 45,3 47,1 49,0 50,8 52,6 54,4
500 kg 19,2 21,2 23,1 25,1 27,0 28,9 30,9 32,8 34,8 36,7 38,6 40,6 42,5 44,5 46,4 48,3 50,3 52,2 54,2 56,1 58,0
550 kg 20,5 22,5 24,6 26,6 28,7 30,8 32,8 34,9 36,9 39,0 41,1 43,1 45,2 47,2 49,3 51,4 53,4 55,5 57,5 59,6 61,7
600 kg 21,7 23,9 26,0 28,2 30,4 32,6 34,8 36,9 39,1 41,3 43,5 45,7 47,8 50,0 52,2 54,4 56,6 58,7 60,9 63,1 65,3
650 kg 22,9 25,2 27,5 29,8 32,1 34,4 36,7 39,0 41,3 43,6 45,9 48,2 50,5 52,8 55,1 57,4 59,7 62,0 64,3 66,6 68,9
700 kg 24,1 26,5 29,0 31,4 33,8 36,2 38,6 41,1 43,5 45,9 48,3 50,7 53,1 55,6 58,0 60,4 62,8 65,2 67,7 70,1 72,5
750 kg 25,3 27,9 30,4 33,0 35,5 38,0 40,6 43,1 45,7 48,2 50,7 53,3 55,8 58,3 60,9 63,4 66,0 68,5 71,0 73,6 76,1
800 kg 26,6 29,2 31,9 34,5 37,2 39,9 42,5 45,2 47,8 50,5 53,1 55,8 58,5 61,1 63,8 66,4 69,1 71,8 74,4 77,1 79,7
CU4 + BFL
Hn\Wn [mm] 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
200 kg 11,1 12,4 13,6 14,8 16,0 17,3 18,5 19,7 20,9 22,2 23,4 24,6 25,8 27,0 28,3 29,5 30,7 - - - -
250 kg 12,4 13,7 15,1 16,4 17,7 19,1 20,4 21,8 23,1 24,4 25,8 27,1 28,5 29,8 31,2 32,5 - - - - -
300 kg 13,6 15,1 16,5 18,0 19,4 20,9 22,4 23,8 25,3 26,7 28,2 29,7 31,1 32,6 34,1 - - - - - -
350 kg 14,8 16,4 18,0 19,6 21,1 22,7 24,3 25,9 27,5 29,0 30,6 32,2 33,8 35,4 - - - - - - -
400 kg 16,0 17,7 19,4 21,1 22,8 24,5 26,2 27,9 29,6 31,3 33,0 34,7 36,5 - - - - - - - -
450 kg 17,3 19,1 20,9 22,7 24,5 26,4 28,2 30,0 31,8 33,6 35,5 37,3 - - - - - - - - -
500 kg 18,5 20,4 22,4 24,3 26,2 28,2 30,1 32,1 34,0 35,9 37,9 - - - - - - - - - -
550 kg 19,7 21,8 23,8 25,9 27,9 30,0 32,1 34,1 36,2 38,2 - - - - - - - - - - -
600 kg 20,9 23,1 25,3 27,5 29,6 31,8 34,0 36,2 38,4 - - - - - - - - - - - -
650 kg 22,2 24,4 26,7 29,0 31,3 33,6 35,9 38,2 - - - - - - - - - - - - -
700 kg 23,4 25,8 28,2 30,6 33,0 35,5 37,9 - - - - - - - - - - - - - -
750 kg 24,6 27,1 29,7 32,2 34,7 37,3 - - - - - - - - - - - - - - -
800 kg 25,8 28,5 31,1 33,8 36,5 - - - - - - - - - - - - - - - -

19
Weights
CU4 + BFLT
Hn\Wn [mm] 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
200 kg 11,2 12,5 13,7 14,9 16,1 17,4 18,6 19,8 21,0 22,3 23,5 24,7 25,9 27,1 28,4 29,6 30,8 - - - -
250 kg 12,5 13,8 15,2 16,5 17,8 19,2 20,5 21,9 23,2 24,5 25,9 27,2 28,6 29,9 31,3 32,6 - - - - -
300 kg 13,7 15,2 16,6 18,1 19,5 21,0 22,5 23,9 25,4 26,8 28,3 29,8 31,2 32,7 34,2 - - - - - -
350 kg 14,9 16,5 18,1 19,7 21,2 22,8 24,4 26,0 27,6 29,1 30,7 32,3 33,9 35,5 - - - - - - -
400 kg 16,1 17,8 19,5 21,2 22,9 24,6 26,3 28,0 29,7 31,4 33,1 34,8 36,6 - - - - - - - -
450 kg 17,4 19,2 21,0 22,8 24,6 26,5 28,3 30,1 31,9 33,7 35,6 37,4 - - - - - - - - -
500 kg 18,6 20,5 22,5 24,4 26,3 28,3 30,2 32,2 34,1 36,0 38,0 - - - - - - - - - -
550 kg 19,8 21,9 23,9 26,0 28,0 30,1 32,2 34,2 36,3 38,3 - - - - - - - - - - -
600 kg 21,0 23,2 25,4 27,6 29,7 31,9 34,1 36,3 38,5 - - - - - - - - - - - -
650 kg 22,3 24,5 26,8 29,1 31,4 33,7 36,0 38,3 - - - - - - - - - - - - -
700 kg 23,5 25,9 28,3 30,7 33,1 35,6 38,0 - - - - - - - - - - - - - -
750 kg 24,7 27,2 29,8 32,3 34,8 37,4 - - - - - - - - - - - - - - -
800 kg 25,9 28,6 31,2 33,9 36,6 - - - - - - - - - - - - - - - -
CU4 + BFN
Hn\Wn [mm] 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
200 kg - - - - - - - - - - - - - - - - - 32,2 33,5 34,7 35,9
250 kg - - - - - - - - - - - - - - - - 34,1 35,5 36,8 38,2 39,5
300 kg - - - - - - - - - - - - - - - 35,8 37,3 38,7 40,2 41,7 43,1
350 kg - - - - - - - - - - - - - - 37,3 38,8 40,4 42,0 43,6 45,2 46,7
400 kg - - - - - - - - - - - - - 38,5 40,2 41,9 43,6 45,3 47,0 48,7 50,4
450 kg - - - - - - - - - - - - 39,4 41,2 43,1 44,9 46,7 48,5 50,3 52,2 54,0
500 kg - - - - - - - - - - - 40,1 42,1 44,0 45,9 47,9 49,8 51,8 53,7 55,6 57,6
550 kg - - - - - - - - - - 40,6 42,7 44,7 46,8 48,8 50,9 53,0 55,0 57,1 59,1 61,2
600 kg - - - - - - - - - 40,8 43,0 45,2 47,4 49,6 51,7 53,9 56,1 58,3 60,5 62,6 64,8
650 kg - - - - - - - - 40,8 43,1 45,4 47,7 50,0 52,3 54,6 56,9 59,2 61,5 63,8 66,1 68,4
700 kg - - - - - - - 40,6 43,0 45,4 47,9 50,3 52,7 55,1 57,5 60,0 62,4 64,8 67,2 69,6 72,1
750 kg - - - - - - 40,1 42,7 45,2 47,7 50,3 52,8 55,4 57,9 60,4 63,0 65,5 68,1 70,6 73,1 75,7
800 kg - - - - - 39,4 42,1 44,7 47,4 50,0 52,7 55,4 58,0 60,7 63,3 66,0 68,6 71,3 74,0 76,6 79,3
CU4 + BFNT
Hn\Wn [mm] 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
200 kg - - - - - - - - - - - - - - - - - 32,3 33,6 34,8 36,0
250 kg - - - - - - - - - - - - - - - - 34,2 35,6 36,9 38,3 39,6
300 kg - - - - - - - - - - - - - - - 35,9 37,4 38,8 40,3 41,8 43,2
350 kg - - - - - - - - - - - - - - 37,4 38,9 40,5 42,1 43,7 45,3 46,8
400 kg - - - - - - - - - - - - - 38,6 40,3 42,0 43,7 45,4 47,1 48,8 50,5
450 kg - - - - - - - - - - - - 39,5 41,3 43,2 45,0 46,8 48,6 50,4 52,3 54,1
500 kg - - - - - - - - - - - 40,2 42,2 44,1 46,0 48,0 49,9 51,9 53,8 55,7 57,7
550 kg - - - - - - - - - - 40,7 42,8 44,8 46,9 48,9 51,0 53,1 55,1 57,2 59,2 61,3
600 kg - - - - - - - - - 40,9 43,1 45,3 47,5 49,7 51,8 54,0 56,2 58,4 60,6 62,7 64,9
650 kg - - - - - - - - 40,9 43,2 45,5 47,8 50,1 52,4 54,7 57,0 59,3 61,6 63,9 66,2 68,5
700 kg - - - - - - - 40,7 43,1 45,5 48,0 50,4 52,8 55,2 57,6 60,1 62,5 64,9 67,3 69,7 72,2
750 kg - - - - - - 40,2 42,8 45,3 47,8 50,4 52,9 55,5 58,0 60,5 63,1 65,6 68,2 70,7 73,2 75,8
800 kg - - - - - 39,5 42,2 44,8 47,5 50,1 52,8 55,5 58,1 60,8 63,4 66,1 68,7 71,4 74,1 76,7 79,4

20 Selection graphs
Selection graphs
700
750
800
650
600
550
500
450
400
350
300
250
200
200 300 400 500 600 700 800 900 1000 12001 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100
v [m/s]
p[Pa]
2
3
4
5
678910 11 12
Hn[mm]
Wn[mm]
Δp [Pa] = ζ*v²*0,6
Hn\Wn [mm] 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
200 ζ [-] 8,46 7,33 6,67 6,25 5,95 5,73 5,56 5,42 5,31 5,22 5,14 5,08 5,02 4,97 4,93 4,89 4,86 4,83 4,8 4,77 4,75
250 ζ [-] 4,44 3,68 3,24 2,96 2,77 2,63 2,52 2,44 2,37 2,31 2,26 2,22 2,19 2,16 2,13 2,11 2,09 2,07 2,05 2,04 2,02
300 ζ [-] 2,92 2,32 1,99 1,79 1,64 1,54 1,46 1,4 1,35 1,31 1,27 1,25 1,22 1,2 1,18 1,16 1,15 1,14 1,12 1,11 1,1
350 ζ [-] 2,16 1,67 1,4 1,23 1,11 1,03 0,97 0,92 0,88 0,85 0,82 0,8 0,78 0,77 0,75 0,74 0,73 0,72 0,71 0,7 0,69
400 ζ [-] 1,72 1,29 1,06 0,92 0,82 0,75 0,7 0,66 0,63 0,6 0,58 0,56 0,55 0,53 0,52 0,51 0,5 0,5 0,49 0,48 0,48
450 ζ [-] 1,44 1,06 0,85 0,73 0,64 0,58 0,54 0,5 0,48 0,45 0,44 0,42 0,41 0,4 0,39 0,38 0,37 0,36 0,36 0,35 0,35
500 ζ [-] 1,25 0,9 0,71 0,6 0,52 0,47 0,43 0,4 0,38 0,36 0,34 0,33 0,32 0,31 0,3 0,29 0,29 0,28 0,27 0,27 0,27
550 ζ [-] 1,13 0,8 0,63 0,52 0,46 0,41 0,37 0,34 0,32 0,3 0,29 0,28 0,27 0,26 0,25 0,24 0,24 0,23 0,23 0,22 0,22
600 ζ [-] 1,02 0,71 0,55 0,45 0,39 0,35 0,31 0,29 0,27 0,25 0,24 0,23 0,22 0,21 0,21 0,2 0,19 0,19 0,19 0,18 0,18
650 ζ [-] 0,94 0,64 0,49 0,4 0,34 0,3 0,27 0,25 0,23 0,22 0,2 0,19 0,19 0,18 0,17 0,17 0,16 0,16 0,15 0,15 0,15
700 ζ [-] 0,87 0,59 0,44 0,36 0,3 0,27 0,24 0,22 0,2 0,19 0,18 0,17 0,16 0,15 0,15 0,14 0,14 0,13 0,13 0,13 0,13
750 ζ [-] 0,81 0,54 0,41 0,33 0,27 0,24 0,21 0,19 0,18 0,16 0,15 0,15 0,14 0,13 0,13 0,12 0,12 0,12 0,11 0,11 0,11
800 ζ [-] 0,77 0,51 0,38 0,3 0,25 0,22 0,19 0,17 0,16 0,15 0,14 0,13 0,12 0,12 0,11 0,11 0,1 0,1 0,1 0,1 0,09
Example
Data
Hn = 400 mm, Wn = 500 mm, v = 4 m/s
Required
Δp = ca. 6.8 Pa (Cfr. selection graph)
Calculation
Δp = 0.7 * (4 m/s)² * 0.6 = 6.72 Pa