D+H EURO-SHEV: Smoke ventilation according to DIN EN 12101-2
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D+H EURO-SHEV: Smoke ventilation according to DIN EN 12101-2

INTRODUCTION Since September 2006, all natural smoke and heat exhaust ventilators (NSHEVs) must provide usability certification in accordance with DIN EN 12101-2 or be individually authorised by means of approval. Only tested complete solutions (consisting of a window or dome light and drive) may be used that in the case of standard units have a CE mark and in the case of custom-designed facades and roof designs have individual approval. DIN EN 12101-2 is a mandated and harmonised standard which falls into the field of application of the Construction Products Directive and soon of the...

A Useful information about EN 12101 9 1 The EN 12101 series of standards using the example of Germany 10 2 The path to the CE marking and to the EC certificate of conformity for NSHEVs 17 4 Other product standards for smoke and heat exhaust systems 32 1 Sample calculation in the roof: specification of the stroke 33 2 Sample calculation in the vertical facade: specification of the stroke 36 C Information about D+H drives and brackets 39 1 Explanation of terms in accordance with EN 12101-2 45

THE D+H MECHATRONIC AG COMPANY D+H Mechatronic AG was one of the first companies to develop natural, electric motor-driven smoke and heat exhaust ventilation (SHEV). Later, D+H became the first producer of electric SHEV systems to be certified in accordance with DIN EN ISO 9001 and launched the first electric SHEV system with VdS approval. D+H therefore exerted its influence as a pioneer in the field of smoke and heat exhaust ventilation and today has more experience and expertise than any other supplier. With a dense network of D+H service and sales partners – 30 in Germany and over 100...

A USEFUL INFORMATION ABOUT EN 12101 The objective of the European series of standards EN 12101 is to ensure free trade in goods whilst at the same time defining minimum product requirements and standardising test methods in Europe. SHEV products may only be marked with a CE marking once: • the product has passed a test at a notified test centre and • an inspection of the manufacturer’s factory has been carried out. Notified test centres in Germany are, for example: • VdS Schadenverhütung GmbH (German loss prevention council), Cologne • aterialprüfungsamt Nordrhein-Westfalen (MPA NRW)...

1 THE EN 12101 SERIES OF STANDARDS USING THE EXAMPLE OF GERMANY The EN 12101 series of standards currently consists of ten sections, which have been adopted in German standards (EN 12101-xx) or published as technical reports (TR 12101-xx). PREVIOUS PREVIOUS CONTENTS FUTURE DIN STANDARD VDS GUIDELINE DIN STANDARD Smoke and heat control systems DIN EN 12101-1 Part 1: Specification for smoke barriers DIN 18232-3 * Structural fire protection in industrial buildings DIN EN 12101-2 Smoke and heat exhaust ventilation systems Smoke vents, tests Smoke and heat control systems...

EN 12101-2 applies to natural smoke and heat exhaust ventilators (NSHEVs). This standard specifies the requirements and test methods for NSHEVs, both for horizontally (roof exhaust systems) and vertically (facade exhaust systems) installed NSHEVs. DIN EN 12101-2 supersedes the German predecessor standard DIN 18232-3. Current version of EN 12101-2

1.1.1. FACADE EXHAUST SYSTEM (VERTICAL FACADE) An NSHEV consisting of electromotive drive and the SHEV opening in the facade can, for example, be installed with a chain drive or rack and pinion drive: Chain drive SHEV opening Rack and pinion drive SHEV opening A wind sensitive control system is mandatory! 1.1.2. ROOF EXHAUST SYSTEM An NSHEV consisting of electromotive drive and the SHEV opening in the roof can, for example, be installed with a rack and pinion drive: Rack and pinion drive SHEV opening NSHEVs in the roof are subject to special installation conditions. These conditions are...

INSTALLATION CONDITIONS FOR ROOF NSHEVS We differentiate in general between two types of NSHEV in the roof: 1. Single flaps with or without wind deflectors 2. Dual single flaps with wind deflectors NSHEVs as a single flap in the roof can be installed with and without wind deflectors and are subject to special installation conditions. Single flaps can only be used in the roofs depicted. Minimum clearances are defined to ensure that the NSHEV functions correctly. If these distances are not observed, the NSHEV no longer achieves the specified aerodynamic efficiency. 1.2.1. SINGLE FLAP WITHOUT...

1.2.3. SINGLE FLAP AS TOP-HUNG VENT WITH THREE-SIDED WIND DEFLECTORS At an installation orientation of [α] 2° to 50° Distance from NSHEV to ridge [Dimension A]: Distance from NSHEV to eave [Dimension tA]: Roof ridge Wind deflectors [WD] NSHEV Please note that the opening angles of the top-hung window depend on the geometry and installation orientation! 1.2.4. DUAL SINGLE FLAP WHEN INSTALLED AT AN ANGLE OF 0-30° The dual single flap can be used in monopitch, barrel and gable roofs. The wind deflectors, which are always required, protect the NSHEV from side wind influences so that no wind...

PERFORMANCE CLASSES In addition to some functional properties such as the opening time ≤ 60 s and requirements in accordance with EN 12101-2 para. 4, the aerodynamic free area (see EN 12101-2, para. 6) and specific performance classes in accordance with EN 12101-2, para. 7 are also tested. These performance classes are defined by the NSHEV manufacturer. The manufacturer may choose between predefined values and the undefined class A. This chosen value is then tested by the notified test centre. The following list provides an overview of the performance classes that can be selected and the...

1.4. DETERMINING THE AERODYNAMIC FREE OPENING AREA IN ACCORDANCE WITH EN 12101- 2, ANNEX B EN 12101-2 requires the specification of the aerodynamic free opening area for smoke extraction from the building for each NSHEV in the roof or facade. The aerodynamic free area Aa is calculated by multiplying the clear geometric area of the NSHEV with the coefficient of discharge. The coefficient of discharge Cv (with side wind influence) or Cv0 (without side wind influence) is determined by the notified test centre while testing the NSHEV. SUMMARY: BASIC REQUIREMENTS FOR D+H EURO-SHEVS In summary,...