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KPDU series

KPDU series
Normally closed multiple-louvre fire safety dampers, fire resistance rating of 180 minutes at smoke temperature of 600 °C.
Model features
  • For household application
  • For commercial buildings
  • For industrial buildings
  • Description
  • Downloads
  • Designation key
  • Installation recommendations
  • Possible variants
  • Characteristics
  • Connection diagrams
  • Dimensions
  • Accessories
Description
Description
APPLICATION
  • The dampers are intended for integration into smoke control systems of buildings and structures of various purpose and designed for extraction of combustion products from the spaces of floor corridors, hallways, air locks etc.
  • The dampers can be used as smoke dampers in emergency smoke exhaust ventilation systems in the event of a fire to support evacuation of people from the building at the initial phase of the fire occurring in any of the building spaces.
  • The KPDU multi-purpose fire safety smoke dampers are rated to resist fire for 180 minutes (E 180) at the temperature of 600 °C.
DESIGN
  • The damper casing is made of galvanised steel 1.5 mm thick. The dampers are available in the wallmounted or duct-mounted variant which have either one or two attachment flanges.
  • The units are available in 3 control variants:
    • With an electric magnet (220 or 24 V). The damper opens via a spring when the electric magnet is energized. When the damper reaches the end position, a limit switch opens the circuit disconnecting the electric magnet from the power mains. The electric magnet must not remain energized for more than 10 seconds. The damper is reset to the safety (closed) position manually by means of a handle. The damper equipped with an electric magnet has a special button for testing the unit performance.
    • With a 230 or 24 V electric actuator and a return spring. The flaps are automatically set to the normal (closed) position when applying voltage to the electric actuator. On a fire alarm signal the electric actuator is de-energized causing its return spring to set the damper to an open position. The electric actuator is equipped with a contact group to signal its end positions. The damper can also be controlled manually and fixed in any position. The unit can be unlocked either manually using a hex wrench or automatically upon power-up.
    • With a 230 or 24 V electric actuator and two-wire control. The damper flap is set from the "Open" to the "Closed" position by an external command sending the voltage phase from one actuator contact to the other. The electric actuator is equipped with a contact group to signal its end positions. The damper can be controlled manually by means of a hex key.
INSTALLATION
  • The dampers are not intended for installation in air ducts and ducts of spaces with fire and explosion hazard categories A and B, in local exhaust systems designed for extraction of flammable and explosive mixtures as well as in systems containing environ-ments more aggressive to plain carbon steels than air or those containing sticky and fibrous materials. Fire safety dampers are only intended for installation in systems subjected to regular cleaning to prevent formation of flammable deposits. The damper must be installed into the building envelope structure in accordance with the applicable standards and regulations.
  • The seal fire resistance must be at least equal to that of the building envelope. When preparing for installation the damper casing should be fitted with wooden spreader bars to prevent deformation, torsional twisting or geometry perturbation of the casing which may result in louvre jamming and, eventually, loss of the damper functionality.
  • Upon completion of the damper brickwork envelope in the smoke shaft, fire division wall or flooring and complete cure (setting) of the sealing, remove the wooden spreader bars and check the louvre for free and frictionless opening. Ground the damper, connect the electric magnet or electric actuator (depending on the modification) to the automatic firefighting system and test the damper actuation.

Downloads
Downloads
Name
Download high quality image "KPDU" (psd 2.13Mb)
Download image "KPDU" for your website (png 676.35Kb)
Brochure "KPD, KPDU" (pdf 1.12Mb)
Designation key
Designation key

Installation recommendations
Installation recommendations
INSTALLATION RECOMMENDATION FOR THE KPDU DAMPER WITH AN INTERNALLY CONNECTED ACTUATOR
in vertical building structures in horizontal building structures
 
duct modification with an air duct
   
INSTALLATION RECOMMENDATION FOR THE KPDU DAMPER WITH AN EXTERNALLY LOCATED ACTUATOR 
in vertical building structures 
   
duct modification with an air duct in horizontal building structures
Possible variants
Possible variants

Possible KPDU damper variants

THE KPDU DAMPER WITH AN INTERNALLY INSTALLED ELECTRIC MAGNET (220/24 V), SINGLE OR DOUBLE FLANGE

  • The single-flange variant is intended for wall or ceiling mounting irrespective of the dimensional orientation. Upon the test or emergency damper actuation the louvres can only be manually reset to the initial position.
  • The double-flange variant is intended for duct installation irrespective of the dimensional orientation. Upon the test or emergency damper actuation the louvres can only be manually reset to the initial position.

 

Flow area of the KPDU smoke exhaust damper with an electric magnet [m²]

B/H 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000
300 0.06                            
350 0.08 0.10                          
400 0.09 0.11 0.12                        
450 0.10 0.13 0.14 0.16                      
500 0.12 0.14 0.15 0.18 0.20                    
550 0.13 0.16 0.17 0.20 0.23 0.25                  
600 0.15 0.18 0.19 0.22 0.25 0.28 0.31                
650 0.16 0.19 0.20 0.24 0.27 0.30 0.33 0.37              
700 0.17 0.21 0.22 0.26 0.29 0.33 0.36 0.40 0.43            
750 0.19 0.22 0.24 0.28 0.31 0.35 0.39 0.43 0.46 0.48          
800 0.20 0.24 0.26 0.30 0.34 0.38 0.42 0.46 0.50 0.51 0.55        
850 0.21 0.26 0.27 0.31 0.36 0.40 0.44 0.48 0.53 0.54 0.59 0.63      
900 0.23 0.27 0.29 0.33 0.38 0.42 0.47 0.51 0.56 0.58 0.62 0.67 0.71    
950 0.24 0.29 0.31 0.35 0.40 0.45 0.50 0.54 0.59 0.61 0.66 0.71 0.75 0.80  
1000 0.25 0.30 0.32 0.37 0.42 0.47 0.52 0.57 0.62 0.64 0.69 0.74 0.79 0.84 0.89

Note: Select the required BxH cross-section damper according to the completed table cells. Since the damper can be installed in any spatial position, a change of the height and width (B and H values) orientation may enable selection of a damper with the cross-section beyond the completed cell range. For examplea 700x500 damper can be ordered as 500x700.

 

THE KPDU DAMPER WITH AN ELECTRIC ACTUATOR (230 OR 24 V) INSTALLED INSIDE THE DAMPER, SINGLE OR DOUBLE FLANGE

  • The single flange variant is intended for wall or ceiling mounting irrespective of the dimensional orientation.
  • The double flange variant is intended for duct installation irrespective of the dimensional orientation. The louvres of dampers equipped with a two-position electric actuator are set to the "open" or "closed" position by an external actuating signal. After a test or emergency actuation the louvres of dampers equipped with an electric actuator with a return spring can return to the initial position automatically upon feeding the supply voltage.

 

Flow area of the KPD smoke exhaust damper with an electric actuator installed inside the damper [m²]

B/H 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000
300 0.06                            
350 0.08 0.10                          
400 0.09 0.11 0.12                        
450 0.10 0.13 0.14 0.16                      
500 0.12 0.14 0.15 0.18 0.20                    
550 0.13 0.16 0.17 0.20 0.23 0.25                  
600 0.15 0.18 0.19 0.22 0.25 0.28 0.31                
650 0.16 0.19 0.20 0.24 0.27 0.30 0.33 0.37              
700 0.17 0.21 0.22 0.26 0.29 0.33 0.36 0.40 0.43            
750 0.19 0.22 0.24 0.28 0.31 0.35 0.39 0.43 0.46 0.48          
800 0.20 0.24 0.26 0.30 0.34 0.38 0.42 0.46 0.50 0.51 0.55        
850 0.21 0.26 0.27 0.31 0.36 0.40 0.44 0.48 0.53 0.54 0.59 0.63      
900 0.23 0.27 0.29 0.33 0.38 0.42 0.47 0.51 0.56 0.58 0.62 0.67 0.71    
950 0.24 0.29 0.31 0.35 0.40 0.45 0.50 0.54 0.59 0.61 0.66 0.71 0.75 0.80  
1000 0.25 0.30 0.32 0.37 0.42 0.47 0.52 0.57 0.62 0.64 0.69 0.74 0.79 0.84 0.89

Note: Select the required BxH cross-section damper according to the completed table cells. Since the damper can be installed in any spatial position any change of the height and width (B and H values) orientation may enable selection of a damper with the crosssection beyond the completed cell range. For example, a 700x500 damper can be ordered as 500x700.

 

THE KPDU DAMPER WITH AN ELECTRIC ACTUATOR (230 OR 24 V) INSTALLED OUTSIDE THE DAMPER, SINGLE OR DOUBLE FLANGE

  • The single flange variant is intended for wall or ceiling mounting irrespective of the dimensional orientation.
  • The double flange variant is intended for duct installation irrespective of the dimensional orientation. The louvres of dampers equipped with a two-position electric actuator are set to the "open" or "closed" position by an external actuating signal. After a test or emergency actuation the louvres of dampers equipped with an electric actuator with a return spring can return to the initial position automatically upon feeding the supply voltage.

 

Flow area of the KPDU smoke exhaust damper with an electric actuator installed outside the damper [m²]

B/H 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000
300 0.07                            
350 0.09 0.11                          
400 0.10 0.12 0.13                        
450 0.11 0.14 0.15 0.17                      
500 0.13 0.15 0.16 0.19 0.21                    
550 0.14 0.17 0.18 0.21 0.24 0.26                  
600 0.16 0.18 0.20 0.23 0.26 0.29 0.32                
650 0.17 0.20 0.21 0.25 0.28 0.31 0.34 0.38              
700 0.18 0.22 0.23 0.27 0.30 0.34 0.37 0.41 0.44            
750 0.20 0.23 0.25 0.29 0.32 0.36 0.40 0.44 0.47 0.49          
800 0.21 0.25 0.27 0.31 0.35 0.39 0.43 0.47 0.51 0.52 0.56        
850 0.22 0.27 0.28 0.32 0.37 0.41 0.45 0.49 0.54 0.55 0.60 0.64      
900 0.24 0.28 0.30 0.34 0.39 0.43 0.48 0.52 0.57 0.59 0.63 0.68 0.72    
950 0.25 0.30 0.32 0.36 0.41 0.46 0.51 0.55 0.60 0.62 0.67 0.72 0.76 0.81  
1000 0.26 0.31 0.33 0.38 0.43 0.48 0.53 0.58 0.63 0.65 0.70 0.75 0.80 0.85 0.90

Note: Select the required BxH cross-section damper according to the completed table cells. Since the damper can be installed in any spatial position any change of the height and width (B and H values) orientation may enable selection of a damper with the cross-section beyond the completed cell range. For example, a 700x500 damper can be ordered as 500x700.

Characteristics
Characteristics

TECHNICAL SPECIFICATIONS OF THE ELECTRIC MAGNET

Parameter name Parameter value
Rated voltage [V] 220/24
Rated current at the ambient temperature of 25±10 °C [A] 0.6/5.5
Armature stroke [mm] 10±1
Armature release time [seconds] 2
Tractive force [N] 45
Maximum active power consumption at 220 V [W] 600
Maximum total power consumption at 220 V [W] 1200
Maximum total power consumption at 24 V [W] 60

 

MAIN TECHNICAL SPECIFICATIONS OF BELIMO ELECTRIC ACTUATORS WITH A RETURN SPRING

Technical data Basic models Models with increased torque
Rated voltage AC/DC 24 V AC 230 V AC/DC 24 V AC 230 V
Rated voltage range AC 19.2…28.8 V
DC 21.6…28.8 V
АС 198…264 V AC 19.2…28.8 V
DC 21.6…28.8 V
АС 198…264 V
Rated voltage frequency AC 50/60 Hz
Power consumption in rest position [W] 1.4 2.0 2 3
Power consumption in operation [W] 4.0 4.5 7 8.5
Maximum design capacity [VA] 6 9.0 10 11
Motor torque [Nm] 9 18
Spring torque [Nm] 7 12
SEC class III II III II
Ingress protection rating IP54
Auxiliary switches 2 pcs., single-pole, reversible 1 mA…3 (0.5) A, AC 250 V 2 pcs., single-pole, reversible 1 mA…6 (3) A, AC 250 V
Electric motor connection cable 1 m, 2 x 0.75 mm² (halogen-free)
Auxiliary switch connection cable 1 m, 6 x 0.75 mm² (halogen-free)
Running time spring 20 seconds at -10…+55 °C
< 60 seconds at -30…-10 °C
16 seconds at +20 °C
Running time motor < 60 s/90° < 120 s/90°
Service life Min. 60 000 emergency positions
Technical maintenance Not required

 

MAIN TECHNICAL SPECIFICATIONS OF BELIMO TWO-POSITION ELECTRIC ACTUATORS

Technical data Basic models Models with increased torque
Rated operation voltage AC/DC 24 V AC 230 V AC/DC 24 V AC 230 V
Rated voltage range AC 19.2…28.8 V
DC 21.6…28.8 V
АС 198…264 V AC 19.2…28.8 V
DC 21.6…28.8 V
АС 198…264 V
Rated voltage frequency AC 50/60 Hz
Power consumption in rest position [W] <0.5 <1 0.5 0.5
Power consumption in operation [W] 7.5 5 12 8
Maximum design capacity [VA] 9 12 18 15
Motor torque [Nm] 15 40
Holding torque [Nm] 20 50
SEC class III II III II
Ingress protection rating IP54
Auxiliary switches 2 pcs., single-pole, reversible, 1 mA…3(0.5)A, AC 250 V
Electric motor connection cable 1 m, 3 x 0.75 mm² (halogen-free)
Auxiliary switch connection cable 1 m, 6 x 0.75 mm² (halogen-free)
Running time < 30 s/90° <60 s/90°
Service life Min. 10 000 emergency positions
Technical maintenance Not required

 

MAIN TECHNICAL SPECIFICATIONS OF ZERN ELECTRIC ACTUATORS WITH A RETURN SPRING

Technical data Basic models Models with increased torque
Rated operation voltage AC/DC 24 V AC 100-240 V AC/DC 24 V AC 100-240 V
Permissible operating voltage tolerance AC/DC 19.2…28.8 V АС 85…265 V AC/DC 19.2…28.8 V АС 85…265 V
AC mains frequency 50/60 Hz
Power consumption in rest position [W] 3
Power consumption in operation [W] 5
Motor torque [Nm] 5 8
Spring torque [Nm]
SEC class III II III II
Ingress protection rating IP54
Auxiliary switches 2 pcs., single-pole, reversible, 1 mA…3(0.5)A, AC 220 V
Electric motor connection cable 1 m, 2 x 0.5 mm² (halogen-free)
Auxiliary switch connection cable 1 m, 6 x 0.5 mm² (halogen-free)
Running time spring < 20 seconds
< 60 seconds at -30…-10 °C
< 25 seconds
< 60 seconds at -30…-10 °C
Running time motor < 70 s/95° < 100 s/95°

 

MAIN TECHNICAL SPECIFICATIONS OF SIEMENS ELECTRIC ACTUATORS WITH A RETURN SPRING

Technical data Basic models Models with increased torque
Rated operation voltage AC 24 V
DC 24...48 V
AC 230 V AC 24 V
DC 24...48 V
AC 230 V
Permissible operating voltage tolerance AC/DC ±20% АС ±15% AC/DC ±20% АС ±15%
AC mains frequency 50/60 Hz
Power consumption in rest position [W] 2 3.5 3 4
Power consumption in operation [W] 3.5 4.5 5 6
Maximum design capacity [VA] 5 7 7 8
Motor torque [Nm] 9 18
Spring torque [Nm] 7 18
SEC class III II III II
Ingress protection rating IP54
Auxiliary switches 2 pcs., single-pole, reversible, 6(2)A, AC 24...250 V
Electric motor connection cable 0.9 m, 2 x 0.75 mm² (halogen-free)
Auxiliary switch connection cable 0.9 m, 6 x 0.75 mm² (halogen-free)
Running time spring 15 seconds
< 60 seconds at -30…-10 °C
Running time motor 90 s/90°
Service life 10 000 emergency positions
Technical maintenance Not required

Note: The table "Main technical specifications of Siemens two-position electric actuators" is in development. This information is available upon request.

Connection diagrams
Connection diagrams
ELECTRICAL CONNECTION DIAGRAM OF KPDU DAMPERS EQUIPPED WITH AN ELECTRIC MAGNET
SQ1 – end switch
YA1 – electric magnet
SB1 – damper louvre opening button
РК – contact of automatic fire suppression block
SA1 – power supply circuit disconnection switch of the electric magnet latch
Х1 – terminal block

1 – supply voltage phase
2 – contact of automatic fire suppression block
3 – supply voltage neutral
4, 5 – command circuit control
6, 7 – louvre position control
8 – grounding bus
 
WIRING DIAGRAM OF KPDU DAMPERS

1 – “Neutral” contact of supply voltage
2 – “Line” contact of supply voltage – closing the damper louvres
S1…S6 – fixed microswitch contacts for signalling end positions

1 – “Neutral” contact of supply voltage
2, 3 – “Line” contact of supply voltage damper louvre closing or opening
S1…S6 – fixed microswitch contacts for signalling end positions
Dimensions
Dimensions
Standard damper size Minimum flow area [m²] KPDU size [mm] Maximum KPDU weight [kg]
Н Н1 Н2 В В1 В2 L
 400х400 0.12 400 420 440 400 420 440 260 9.5
500х500 0.2 500 520 540 500 520 540 285 12.1
600х600 0.31 600 630 660 600 630 660 260 17
700x700 0.43 700 730 760 700 730 760 275 20.3
800x800 0.55 800 830 860 800 830 860 260 24.1
900x900 0.71 900 930 960 900 930 960 270 27.4
1000x1000 0.9 1000 1030 1060 1000 1030 1060 285 31.7
 
THE KPDU DAMPER WITH AN INTERNALLY INSTALLED ELECTRIC MAGNET (220/24 V), SINGLE OR DOUBLE FLANGE
 
THE KPDU DAMPER WITH AN ELECTRIC ACTUATOR (230 OR 24 V) INSTALLED INSIDE THE DAMPER, SINGLE OR DOUBLE FLANGE
 
THE KPDU DAMPER WITH AN ELECTRIC ACTUATOR (230 OR 24 V) INSTALLED OUTSIDE THE DAMPER, SINGLE OR DOUBLE FLANGE
Accessories
Accessories
VANDAL-PROOF MESH ALUMINIUM DECORATIVE GRILLE

  • The KPD dampers can be equipped with a vandal-proof mesh.

  • The unit can be equipped with a decorative grille made of aluminium for a more aesthetic appearance. The grille has a single horizontal row of non-adjustable air flow guides fixed at 45 degrees. The grille is polymer coated and anodised for extra protection against the weather elements.
  • To enable the decorative grille installation, the damper must be embedded at least 40 mm deep into the wall as measured from the wall face to the damper flange.
  • NOTE: While selecting the aluminium decorative grille mind the wall opening dimensions.

   
Cross-section dimensions and area [m²]  
Height H, mm Length L, mm
100 150 200 250 300 350 400 450 500 600 700 800 900 1000
100 0.004 0.007 0.010 0.012 0.015 0.018 0.021 0.024 0.027 0.033 0.039 0.045 0.051 0.057
150 0.070 0.010 0.015 0.018 0.023 0.027 0.031 0.035 0.039 0.047 0.055 0.064 0.072 0.080
200 0.010 0.015 0.021 0.026 0.033 0.038 0.045 0.051 0.058 0.070 0.081 0.093 0.105 0.115
250 0.012 0.018 0.026 0.032 0.041 0.047 0.055 0.062 0.070 0.084 0.098 0.106 0.113 0.128
300 0.015 0.023 0.033 0.041 0.051 0.059 0.069 0.077 0.086 0.096 0.115 0.132 0.149 0.168
350 0.017 0.026 0.038 0.047 0.059 0.068 0.080 0.090 0.099 0.111 0.132 0.151 0.170 0.193
400 0.020 0.030 0.044 0.054 0.069 0.079 0.093 0.103 0.117 0.142 0.166 0.189 0.212 0.237
450 0.023 0.035 0.051 0.062 0.080 0.090 0.107 0.117 0.131 0.160 0.186 0.214 0.239 0.265
500 0.026 0.039 0.056 0.070 0.089 0.100 0.119 0.130 0.145 0.178 0.206 0.238 0.265 0.293
600 0.031 0.047 0.067 0.084 0.105 0.121 0.142 0.158 0.173 0.214 0.246 0.287 0.318 0.349
700 0.036 0.055 0.078 0.094 0.124 0.145 0.170 0.184 0.203 0.251 0.288 0.336 0.372 0.408
800 0.042 0.063 0.090 0.112 0.141 0.163 0.190 0.211 0.232 0.288 0.330 0.385 0.426 0.467
900 0.048 0.072 0.103 0.129 0.160 0.185 0.228 0.238 0.262 0.325 0.372 0.435 0.481 0.527
1000 0.053 0.079 0.113 0.141 0.177 0.204 0.239 0.266 0.292 0.361 0.414 0.484 0.536 0.587
   
RD, RD1 smoke exhaust grille  
  • The KPD dampers can be additionally equipped with a smoke exhaust grille. The smoke exhaust grille is used when it is necessary to entirely hide the damper internals from view and if there are no strict requirements to external design. The smoke exhaust grille also doubles as unauthorized access protection for the damper and its actuator. The grille has a single horizontal row of non-adjustable air flow guides fixed at 45 degrees. The grille can be made of galvanized steel (Ts), carbon steel with a special coating (M), stainless steel (N) or aluminium (A). The grille is attached directly to the damper flange by means of self-tapping screws with the flaps facing outward and does not require any additional recessing of the damper.
RD smoke exhaust grille
   
Cross-section dimensions and area [m²]  
Width B [mm] Height H [mm]
300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000
300 0.059                            
350 0.069 0.079                          
400 0.080 0.091 0.114                        
450 0.090 0.103 0.129 0.142                      
500 0.101 0.115 0.144 0.158 0.173                    
550 0.111 0.127 0.159 0.175 0.191 0.207                  
600 0.122 0.139 0.174 0.191 0.209 0.226 0.244                
650 0.132 0.151 0.189 0.208 0.227 0.246 0.265 0.284              
700 0.143 0.163 0.204 0.224 0.245 0.265 0.286 0.306 0.347            
750 0.153 0.175 0.219 0.241 0.263 0.285 0.307 0.329 0.372 0.394          
800 0.164 0.187 0.234 0.257 0.281 0.304 0.328 0.351 0.398 0.421 0.445        
850 0.174 0.199 0.249 0.274 0.299 0.324 0.349 0.374 0.423 0.448 0.473 0.498      
900 0.185 0.211 0.264 0.290 0.317 0.343 0.370 0.396 0.449 0.475 0.502 0.528 0.554    
950 0.195 0.223 0.279 0.307 0.335 0.363 0.391 0.419 0.474 0.502 0.530 0.558 0.586 0.614  
1000 0.206 0.235 0.294 0.323 0.353 0.382 0.412 0.441 0.500 0.529 0.559 0.588 0.617 0.647 0.676
   
Designation key:  
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