EK2-EU

Smoke control dampers are used in mechanical smoke extract systems. They are used for extracting smoke gases and for providing additional supply air to one or more fire compartments. The dampers are made of calcium silicate panels and are opened by an encased actuator; when smoke is detected, the actuator is triggered by a signal either from a duct smoke detector or from a fire alarm system. Smoke control dampers have two safe positions: open and closed.

In the case of fire-resistant smoke control dampers for multiple compartments, the safe position is either "open" or "closed", depending on the fire site and the path of the smoke to be extracted. If the safe position is 'open', the free area must be maintained even in the event of a fire. The blade of EK2-EU moves to the defined safe position upon receiving an automatically or manually triggered control signal. According to the specified time-temperature curve, the EK2-EU can still fully open or close after 25 minutes (MA, manual release). Type EK2-EU smoke control dampers are also approved for modulation applications (Cmod) – the damper blade can take any intermediate position, which allows for pneumatic balancing._{Regular maintenance of the smoke control damper is required to ensure its functional reliability.}

• The installation types A, B and C lead to differences in the pressure loss values and must be taken into account in the sizing.
• Precise values based on project-specific data can be determined with our Easy Product Finder design program.
• You will find the Easy Product Finder on our website

Sizing example:

Sizing for smoke extract (installation type "C") based on given volume flow rate and limited installation opening

• Volume flow rate: q_v ≥ 15000 m³/h
• Maximum height of the opening: H (installation opening) = 1.2 m  
• Inspection access panel, wall connectors and cover grille in RAL 9022 requested
• Determination of nominal height (H) EK2-EU: Wall opening (H = 1200 mm) - casing thickness (100 mm) - perimeter gap (top 50 mm, bottom 50 mm) = 1000 mm

Product selection
EK2-EU-MA-IC/DE/1000 × 600 × 800/01/B24/P1-RAL 9022

Results

• q_v = 15120 m³/h (volume flow rate)
• v = 7.0 m/s (airflow velocity based on the nominal size or upstream cross section)
• Δp_t  = 55 Pa (total pressure loss with cover grille, installation type "C")

Sizing for providing additional supply air (installation type "B") of 15000 m³ based on specified maximum upstream velocity of 3.5 m/s

• Volume flow rate: q_v ≥ 15000 m³/h
• Upstream velocity: v ≤ 3.5 m/s
• Inspection access panel, wall connectors and cover grille in RAL 9022 requested

Product selection
EK2-EU-MA-IC/DE/1500 × 800 × 800/01/B24/P1-RAL 9022

Results

• q_v = 15120 m³/h (volume flow rate)
• v = 3.5 m/s (airflow velocity based on the nominal size or upstream cross section)
• Δp_t = 14 Pa (total pressure loss with cover grille, installation type "B")

F, A, B, Q – connecting subframes and cover grilles

Application

A connecting subframe (F) is required for sheet steel smoke extract ducts

ATTENTION: Nominal size of the connecting subframe is always B + 20 mm (10 mm distance to the open damper blade edge on each side).

Cover grilles are attached to the damper or to the end of ducts; this application has been approved based on a fire test to EN 1366-10

The cover grille free area is approx. 80% for crimped wire mesh (A) and approx. 70% for perforated metal plates

Connecting subframes and cover grilles are factory mounted to the dampers

Connecting subframes and cover grilles may also be ordered separately

Materials and surfaces

F: Connecting subframe made of galvanised sheet steel

Cover grilles

A: Crimped wire mesh made of galvanised steel

B: Perforated metal plate made of galvanised sheet steel

Q: Perforated metal plate, bent, made of galvanised steel

Surface finish of attachments

No entry required: None (standard)

P1 Powder-coated, specify RAL CLASSIC colour

PS Powder-coated, DB colour ...

Gloss level

RAL 9010 50 %

RAL 9006 30 %

All other RAL colours 70 %

Application

• Open/close actuators for the opening and closure of smoke control dampers, with automatic (AA) or manual release (MA).
• With integral limit switches for capturing the end positions
• Override control for up to 25 minutes
• Ambient temperature for normal operation: -30 to 50 °C, up to 95%, without temperatures below the dew point, no condensation (EN 60730-1)
• Two integral limit switches with volt-free contacts can indicate the damper blade position (OPEN and CLOSED)
• The connecting cables of the 24 V actuator are fitted with plugs, which ensure quick and easy connection to the TROX AS-i bus system
• The connecting cable of the 230 V AC actuator is fitted with wire end ferrules

Variants

B24

• 24 V AC/DC supply voltage
• BEN24-ST TR: Torque 15 Nm
• BEE24-ST TR: Torque 25 Nm
• BE24-12-ST TR: Torque 40 Nm
   

B230

• Supply voltage 230 V AC
• BEN230 TR: Torque 15 Nm
• BEE230 TR: Torque 25 Nm
• BE230-12 TR: Torque 40 Nm
   

B24-SR

• BEN24-SR: Torque 15 Nm
• BEE24-SR: Torque 25 Nm
   

The torque required to operate the smoke control damper depends on the size which is why the actuator type cannot be chosen freely.

Installation information

• Feeding the electric connecting cable through the actuator encasing requires a drilled hole of the exact size (Ø max. + 1 mm)
• A wire clamping bracket is required
• For details on maintenance and inspection, refer to the installation and operating manual.

The actuators of the EK2-EU are designed according to the size depending on the torque and the order option (order code detail). The torque table can be used to determine the correct actuator. For intermediate sizes choose the next larger dimension.

Wiring examples, technical data

Interfaces to higher level systems

TROX fire and smoke protection systems have standardised interfaces for central building management systems. In the simplest case, the interface consists of discrete signalling contacts that connect the alternating inputs and outputs of TROX systems and other building components.

Control and communication modules for smoke control dampers

Note:
Actuators and communication modules are factory tested together; only tested combinations must be used.

B24A – AS-EM/EK

Application

• Module for the control of smoke control dampers
• Capturing damper blade positions OPEN and CLOSED
• Actuators can be started even without controller communication
• LEDs for OPEN and CLOSED positions; monitoring of run time errors
• Integral AS-Interface slave
• Monitoring of signal reception
• Master can be used to monitor the run time of the damper blade actuator
• Supply voltage of the module and the 24 V DC actuator using AS-Interface ( 2-wire control)
• Plug-in connection for Belimo actuators (factory mounted and wired)

Use

B24A – Mounted to the smoke control damper

Application

• Module for the control of smoke control dampers
• Capturing damper blade positions OPEN and CLOSED
• Approved up to SIL2 to IEC/EN 61508
• Integral AS-Interface slave
• Monitoring of signal reception
• Master can be used to monitor the run time of the damper blade actuator
• Connection with terminals
• Supply voltage of the module and the 24 V DC actuator using AS-Interface (2-wire control)
• Plug-in connection for Belimo actuators (factory mounted and wired)

Use

B24AS – Mounted to the smoke control damper

B24AM – AS-EM/M

Application

• Module for the control of smoke control dampers with C_modFunction:
• Capturing the damper blade end positions (CLOSED and OPEN)
• Time-controlled selection of 8 intermediate positions of the damper blade (opening angle between 20% – 70%)  
• Actuators can be started even without controller communication
• Emergency position can be set (OPEN or CLOSED)
• LEDs for OPEN and CLOSED positions; monitoring of run time errors
• Integral AS-Interface slave
• Monitoring of signal reception
• Master can be used to monitor the run time of the damper blade actuator 
• Supply voltage of the module and 24 V DC actuator using AS-Interface (2-wire control)
• Plug-in connection for Belimo actuators

Use

B24AM – Mounted to the smoke control damper

B24BKNE – Communication module

Application

• Communication and power supply unit for 24 V actuators in smoke extract applications, status LEDs, retention of the damper control input signal, 230 V AC connection, 1 m cable, free of halogens

Use

B24BKNE – BKNE230-24 communication module

B24C – Communication module

Application

• SLC technology
• The BC 24 module is used for the control of damper actuators
• Power supply and communication are implemented with an interchangeable two core cable, SLC24-16B system.
• A thermoelectric release mechanism and a duct smoke detector can be connected without the need for additional devices

Use

B24C – BC24-G2 communication module from BV-Control AG

B24D, B230D – Communication module

Application

• AGNOSYS system
• BRM-F-ST module is used for the monitoring and control of smoke control dampers 
• Up to 126 modules can be connected in a ring topology

Use

B24D – AGNOSYS BRM10FST communication module
B230D – AGNOSYS BRM10F communication module