Hot gas control damper

SMOKE EXTRACTION DAMPER (EK-HGR)

Lightning fast: 1 second open/close time
Superior response time compared to standard dampers Multifunctional: smoke extraction, ventilation, combi dampers
More versatile than single-purpose solutions Innovative control: "Faster pressure adjustment
Faster pressure adjustment than conventional systems Compact: 200 mm overall length, reduced weight
More space-saving and lighter than alternatives Certification: Complies with DIN EN 12101-6 /-8

General information

Application

▪ Removal of smoke from pressurised ventilation system exhaust ducts

▪ Keeping safety stairwells, vestibules, fire station lift shafts and escape tunnels smoke-free

Special characteristics

▪ Lightning fast opening and closing times of 1 second each

▪ Innovative control technology for precise pressure adjustment

Nominal sizes

see dimension table

Variants

▪ Rectangular steel version

▪ Rectangular stainless steel version

Construction

▪ Horizontal installation in exhaust air shaft

▪ Vertical installation in or in front of ducts

▪ Compact design with 200 mm overall length

Parts and characteristics

▪ 3-point actuator (OPEN-STOP-CLOSE) with limit switches

▪ Temperature resistant up to 400°C for 120 minutes

▪ Operating temperature range -20°C to +60°C

Mounting parts

▪ End grille: Expanded metal grille

▪ Rain protection roof

Accessories

▪ Rain canopy for outdoor installation

▪ Special “Fast Pressure Adjustment" control software

Construction features

▪ Rectangular design

▪ Counter-rotating damper blade opening and closing

▪ Weight-reduced construction

▪ Integrated rain cover for weather resistance (optional)

▪ Suitable for mounting of end grilles

▪ Suitable for front and rear mounting of sheet steel ducts

Material and surfaces

▪ Casing, damper blade, mechanism available in galvanised steel or A4 stainless steel

▪ Surfaces can be painted to RAL colour chart

▪ Bearings are DU coated Fibreglass and high temperature tape gaskets (HT gaskets)

▪ Calcium silicate encapsulation for thermal insulation

Classification, standards and guidelines

▪ Classification to EN 12101-8

▪ Tested to EN 1366-2 and EN 1366-10

▪ Complies with EU Medical Device Directive (MDR)

▪ Conformity assessment procedure required

Technical data

▪ Classification: E600 120 (ved hod i↔o) S 1500 Cmod AA Single

▪ Opening and closing time: 1 second each

TECHNICAL INFORMATION

The hot gas control damper: Innovative solution for pressurised ventilation systems

Pressurised ventilation systems in buildings are complex systems that play a crucial role in ensuring safety in the event of a fire. A critical aspect of these systems are the vertical exhaust shafts, which are exposed to various environmental influences. There are two main problems that affect the functionality of these shafts:

Convection at low outside temperatures
Negative pressure on the roof surface due to wind flow

These factors can change the pressure in the exhaust shaft and on the affected floor (fire floor), resulting in increased door opening forces.

The problem in detail

In the event of an alarm, both the smoke extraction damper on the fire floor and the access to the atmosphere on the roof will open. This means that the weather can have a direct effect on the pressure conditions in the exhaust air shaft and in the corridor on the fire floor.

Airflow: Creates a negative pressure that is transferred into the building depending on the height of the fire floor.
Winter convection: Particularly affects the lower parts of the building.

The solution: hot gas control damper

The high-speed control damper was developed to neutralise these negative influences. This fast-closing, temperature-resistant damper is installed on the exhaust duct and offers the following advantages

1. Fast response: opening and closing time of only 1 second.

2. High temperature resistance: Tested at 300°C and 400°C for 120 minutes.

3. Precise control: 3-point actuator (OPEN-STOP-CLOSE) with limit switches.

There are currently different requirements for such dampers in Germany. The MVVTB requires a design as a smoke extraction system, while DIN EN 120101-6:2022 specifies specific control speeds and temperature requirements. CE marking is currently not possible as there is no mandated and harmonized test standard. The high-speed control damper is an innovative solution that significantly improves the safety of pressure ventilation systems while meeting current technical requirements.

Nominal size B × H	H: 320, 480, 640, 800, 960 mm B: 300 mm ... 1000 mm (in 50-mm-steps)
Case length	200 mm
Volume flow rate range at 10 m/s	from 1.750 m³/h to 30.000 m³/h from 100 l/s to 32.000 l/s
Differential pressure range	Pressure level 3, -1500 to 500 Pa
Operating temperature	-15 °C ... 60 °C without temperatures below the dew point
Upstream velocity with the same upstream and downstream flow	≤ 10 m/s
Closed damper blade air leakage	EN 1751, at least class 2 from nominal width B x H ≥ 800 x 480: class 3
Casing leakage	EN 1751, class B from nominal width B x H ≥ 800 x 480: class C
EC conformity	▪ Construction Products Regulation (CPR) No. 305/2011/EU ▪ EN 12101-6 – Smoke and Heat Control Systems – Part 6: Specification for Pressure Differential Systems ▪ EN 13501-4 – Fire Classification of Construction Products and Building Elements – Part 4: Fire Resistance Tests for Smoke Control Systems ▪ EN 1751 – Ventilation for Buildings – Air Terminal Devices – Aerodynamic Testing of Dampers and Valves

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

Specification text

Delivery and Installation of Hot Gas Control Dampers for Pressurization Systems:

Design as a hot gas control damper according to EN 12101-6:2022
Construction and quality in accordance with a smoke control damper as per EN 12101-8
Series EK-JS in rectangular design
Material: Steel or stainless steel (to be specified by the client)
Opening and closing time: 1 second each Temperature resistance: Tested for 300°C/120 minutes and 400°C/120 minutes
Drive: 3-point actuator (OPEN-STOP-CLOSE) with limit switches
Classification: E600 120 (ved hod i↔o) S 1500 Cmod AA Single
Operating temperature range: -20°C to +60°C
Weather protection: Integrated rain cover
Installation: Horizontal installation in the exhaust air shaft
Test certificate: Test report according to DIN EN 12101-6:2022 Annex B from MPA Braunschweig

The damper is used for the controlled extraction of smoke from exhaust air ducts in a pressurization system designed to maintain smoke-free conditions in safety stairwells, their anterooms, firefighter elevator shafts, or escape tunnels. It enables rapid closure and controlled deceleration of the airflow within the exhaust air shaft.

Downloads

product information

product information

hot gas control damper 900 KB pdf

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