JFZ_img_05psd.png
JFZ_img_02psd.png

JFZ with actuator

JFZ_img_05psd.png
JFZ_img_02psd.png

JFZ

For the ventilation of and smoke extract from underground transport systems


Tunnel dampers are safety components specially designed for underground transport systems and meet special requirements

  • Certified construction and manufacturing according to ISO 9001

  • Temperature resistance up to 400 °C over 120 min

  • Construction: Galvanised steel

  • Side seals made of sprung stainless steel compensate for the longitudinal expansion of the blades at high temperatures

  • Parallel or opposed action blades

  • Operation via electric actuators, including heat-insulating protective enclosure (optional)

  • Casing air leakage to EN 1751, class C

  • Low differential pressure and sound power level

  • Installation orientation is independent of the airflow direction

 

Optional equipment and accessories

  • Installation subframe for assembly

  • Support structure for installation of multiple dampers into walls

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General information

Application

  • Specially designed for underground transport systems

  • For opening and closing smoke extract ducts

  • Component of ventilation and smoke extract systems in underground transport systems

  • Can also be used as shut-off dampers for fans


Classification

  • Test report no. 15/11160-2708 – Applus (Spain)

  • Casing air leakage to EN 1751, class C

  • Test report no. 210006732-02 – MPA NRW (Germany)

  • Long-term testing: 10.000 open/close cycles


Constructions

Standard sizes

  • B = 400 – 2000 mm

  • H = 345 – 1995 mm


Intermediate sizes

  • B (width) and H (height) dimensions available in each millimetre increment

  • Large dimensions can be implemented using units consisting of several dampers and a support structure


Optional equipment

  • Installation subframe

  • Support structure

  • Terminal plates


Accessories

  • Actuator

  • Encasing

  • Hold open device


Special features

  • Low differential pressure and sound power level

  • Aerofoil blades

  • Low maintenance construction

  • No parts with silicone

  • Closed blade air leakage at a differential pressure of 40 Pa = 200 m³/h per m²

  • Remote control with actuator (optional)


Parts and characteristics

  • Frame

  • Blade

  • Actuator

  • External linkage

  • Travel stop (angle section), side B

  • Side seal, side H

  • Electric open/close actuator or spring return actuator including limit switches


Construction features

  • Rectangular welded casing, material thickness 1.25 mm

  • Blades, material thickness 1 mm, counter-rotating or parallel coupled

  • Flanges on both sides, suitable for duct connection, with flange holes

  • Arrangement of the actuator on the second blade (independent of size)

  • External linkage, robust and durable, consisting of the coupling rod and horizontal arms

  • Damper blade shafts, Ø12 mm, with a notch for marking the damper blade position

  • The tunnel damper is remotely operated via an actuator, which is additionally protected by a heat-insulating enclosure depending on the application

  • Side seals between the regular blades and the frame

  • Travel stop (angle section) ensures tight closure of the top and bottom blades



Materials and surfaces

  • Casing, blades and travel stop (angle section) made of formed galvanised sheet steel; flanges on both sides with corner holes

  • Blade shafts, drive arm and external linkage made of galvanised steel

  • Side seal made of stainless steel

  • Brass bearings


Installation and commissioning

  • Installation position is independent of the airflow direction

  • With horizontal blades

  • Between ducts

  • Torsion-free installation

  • After installation the damper must remain accessible for inspection, cleaning and repair

  • Connected ducts must have an inspection access 


Standards and guidelines

  • German 'Bau- und Prüfgrundsätze' [Principles of Construction and Testing], 2/84 edition

  • Maintenance standards DIN 31051 and EN 13305


Maintenance

  • Tunnel dampers must be maintained regularly and must be operational at all times

  • The maintenance standards DIN 31051 and EN 13305 must be observed in order to maintain and, if necessary, restore the desired condition.

  • Tunnel dampers must be serviced at least once a year

  • A maintenance report must be created; documents must be kept for reference

  • Maintenance-free as construction and materials are not subject to wear


Technical information

Function, Technical data, Quick sizing, Specification text, Order code

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

Tunnel dampers with a linkage have same or opposed action. An external linkage transfers the synchronous rotational movement from the drive arm to the individual blades. Even large dampers can be safely opened and closed with this type of linkage. Opposed action blades close at different angular velocities due to the transverse link. As a result, the closing properties are better and the air leakage is low when the damper is closed.


Nominal sizes

357 × 345 – 2000 × 1998 mm 

Volume flow rate range

200 – 40,000 l/s or 720 – 143,640 m³/h

Maximum static differential pressure

Up to 3000 Pa

Operating temperature

-20 – 150 °C in normal operation, 400 °C, 120 min in the event of a fire


Quick sizing tables provide a good overview of the sound power levels and differential pressures that can be expected. Approximate intermediate values can be interpolated.

 

Quick sizing, differential pressure and sound power level JFZ with damper blade position α

OPEN/0°20°40°60°80°
v [m/s]Δpst [Pa]LWA [dB(A)]Δpst [Pa]LWA [dB(A)]Δpst [Pa]LWA [dB(A)]Δpst [Pa]LWA [dB(A)]Δpst [Pa]LWA [dB(A)]
0.5<5<30<5<30<5<30224425567
1<5<30<5<308388559101082
2<531<535285333574>2000>90
4<546105011068139589>2000>90
6<555225925077>2000>90>2000>90
8861406544083>2000>90>2000>90
101466607069088>2000>90>2000>90



Sound power level with closed tunnel damper JFZ according to surface area B × H [m²].


0,140,20,40,60,81,224
Δpst [Pa]LWA [dB(A)]
1005758616364646871
2006365686971717578
5007172767879798587
100078808284858589>90
1500818286888989>90>90
2000848689>90>90>90>90>90

Specification text

Specially designed safety component. Units consist of a casing, movable blades and linkage. Special side seals take up and compensate for the longitudinal expansion of the component at temperatures up to 400 °C for 120 minutes.


Special features

  • Low differential pressure and sound power level

  • Aerofoil blades

  • Low maintenance construction

  • No parts with silicone

  • Closed blade air leakage at a differential pressure of 40 Pa = 200 m³/h per m²

  • Remote control with actuator (optional)


Materials and surfaces

  • Casing, blades and travel stop (angle section) made of formed galvanised sheet steel; flanges on both sides with corner holes

  • Blade shafts, drive arm and external linkage made of galvanised steel

  • Side seal made of stainless steel

  • Brass bearings




Constructions

Standard sizes

  • B = 400 – 2000 mm

  • H = 345 – 1995 mm


Intermediate sizes

  • B (width) and H (height) dimensions available in each millimetre increment

  • Large dimensions can be implemented using units consisting of several dampers and a support structure


Optional equipment

  • Installation subframe

  • Support structure

  • Terminal plates


Technical data

  • Nominal sizes: 357 × 345 – 2000 × 1998 mm

  • Volume flow rate range: 200 to 40,000 l/s or 720 to 143,640 m³/h

  • Permissible static differential pressure: up to 3000 Pa

  • Operating temperature: -20 – 150 °C in normal operation, 400 °C 120 min in the event of a fire



Sizing data

  • qv (m³/h)

  • Δpst [Pa]

Air-regenerated noise

  • LPA [dB(A)]

JFZSR / 1000×1200 / BE24 / P / NO
|||||||
1234567

1 Type
JFZ Tunnel and industrial damper 

2 Function
No entry required: Opposed action
S Opposed action
P Same action 

3 Linkage-to-actuator connection
No entry required: Right
L Left 

4 Nominal size [mm]
B × H 

5 Attachments
No entry required: No actuator
B24 Belimo BE24-12 (24 V AC/DC, 40 Nm)
B230 Belimo BE230-12 (230 V AC, 40 Nm)
R230-58 Rotork RCEL006 (230 V AC, 58 Nm)
R400-58 Rotork RCEL006 (400 V AC, 58 Nm)
R230-88 Rotork RCEL009 (230 V AC, 88 Nm)
R400-88 Rotork RCEL009 (400 V AC, 88 Nm)
BC24 Bemard SQ4 (24 V AC, 50 Nm)
BC230 Bemard SQ4 (230 V AC, 50 Nm)
Spring return actuator (power off to close)
B24MF Belimo EF24A-S2 (24 V AC/DC, 30 Nm)
B230MF Belimo EF230A-S2 (230 V AC, 30 Nm)
SIF Schischek InMax-50-SF-S9 (24 – 240 V AC/DC, 50 Nm)

LD Hold open device 

6 Temperature resistant enclosure
No entry required: None
P Enclosure (for Belimo or Schischek)
T Thermal bag (for Rotork and Bernard actuators) 

7 Damper blade position, safety function only with spring return actuator
NO Power off to OPEN (standard)
NC Power off to CLOSE


Order example: JFZ-S-L/1000×1500/B24
FunctionOpposed action
Linkage-to-actuator connectionLeft
Nominal size B × H1000 × 1500 mm
AttachmentsBelimo BE24-12

Variants, Dimensions, Installation examples

  • VARIANTEN
  • DIMENSIONS
  • INSTALLATION EXAMPLES

Attachments

OPEN/CLOSE actuator BE24-12-ST TR

 

JFZ with open/close actuator 

  • Opening and closing of JFZ tunnel dampers

  • With integral limit switches for capturing the end positions

  • Operation of the tunnel damper with an OPEN/CLOSED actuator enables remote control and/or release by suitable release mechanisms

  • Ambient temperature in normal operation -30 – 50 °C

  • Two integral limit switches with volt-free contacts can indicate the damper blade position (OPEN and CLOSED)

 

Installation information

  • The electrical connecting cable is fed through the side wall of the actuator enclosure via a precisely fitting drilled hole.

  • A wire clamping bracket is required

  • For details on maintenance and inspection, refer to the installation and operating manual.



Open/close actuator BE230-12 TR

JFZ with open/close actuator

  • Opening and closing of JFZ tunnel dampers

  • With integral limit switches for capturing the end positions

  • Operation of the tunnel damper with an OPEN/CLOSED actuator enables remote control and/or release by suitable release mechanisms

  • Ambient temperature in normal operation -30 – 50 °C

  • Two integral limit switches with volt-free contacts can indicate the damper blade position (OPEN and CLOSED)

 


Installation information

  • The electrical connecting cable is fed through the side wall of the actuator enclosure via a precisely fitting drilled hole.

  • A wire clamping bracket is required

  • Notes regarding maintenance, inspection and servicing


 


Spring return actuator EF24A-S2

JFZ with spring return actuator

  • Operation of the tunnel damper with a spring return actuator enables remote control and/or release by suitable release mechanisms

  • Spring return actuator 24 V for open/closed switchover

  • Ambient temperature in normal operation -30 – 50°C

  • Two integral limit switches with volt-free contacts can indicate the damper blade position (OPEN and CLOSED)

 


Safety function

  • NO: Power off to OPEN

  • NC: Power off to CLOSE

 


Parts and characteristics

  • 24 V AC/DC supply voltage

  • 1-wire control (2-point)

  • Mechanical stops

  • Direction of action can be reversed

  • Crank handle for manual operation


 


Spring return actuator EF230A-S2

JFZ with spring return actuator

  • Operation of the tunnel damper with a spring return actuator enables remote control and/or release by suitable release mechanisms

  • Spring return actuator EF230A-S2

  • Spring return actuator 230 V for open/closed switchover

  • Ambient temperature in normal operation -30 – 50 °C

  • Two integral limit switches with volt-free contacts can indicate the damper blade position (OPEN and CLOSED)

 


Safety function

  • NO: Power off to OPEN

  • NC: Power off to CLOSE

 


Parts and characteristics

  • Supply voltage 100 to 240 V AC

  • 1-wire control (2-point)

  • Mechanical stops

  • Direction of action can be reversed

Weights (including B24 actuator) according to width B [mm]

400600800100012001400160018002000
Hkg
345131517202224262931
510151821242730323538
675182125283235384245
840202428333742465155
1005222732374348535864
1170243036424854606672
1335273340465360667379
1500283542495664717885
1665303846546270778593
18303240495766748391100
19953443526171808999108

JFZ, intermediate sizes

Drive position
HNumber of bladesX [mm]BladesY [mm]
348 – 508225521,5 – 81,5
1833 – 19931125521,5 – 81,5
19951225521.5
513 – 673325521,5 – 81,5
678 – 838425521,5 – 81,5
843 – 1003525521,5 – 81,5
1008 – 1168625521,5 – 81,5
1173 – 1333725521,5 – 81,5
1338 – 1498825521,5 – 81,5
1503 – 1663925521,5 – 81,5
1668 – 18281025521,5 – 81,5



Number of flange holes per side according to width B

Bn
400 – 5372
538 – 7873
788 – 10374
1038 – 12875
1288 – 14376
1538 – 17877
1788 – 20008


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Contact

Thank you for your message!

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265