Fire protection systems for ventilation systems

Fire protection systems mainly consist of straight air duct sections, fittings, seals, connectors and fasteners, classified or unclassified wraps and shut-off devices for fire and smoke etc. They may only be used to prevent the spread of fire from storey to storey for exhaust ventilation systems in accordance with DIN 18017-3 or accordingly for systems based on DIN 18017-3 in which supply air is ducted.

The components of the fire protection system combined prevent the spread of fire and smoke to other storeys for the verified duration.

Regulatory framework

DIBt grants national technical approvals (abZ)/general construction technique permits (aBG) for fire protection systems for use in exhaust ventilation systems in accordance with DIN 18017-3 or accordingly for systems based on DIN 18017-3 in which supply air is ducted (see e.g., M-LüAR, Section 7.2).

Please also refer to the relevant provisions of the federal states following MVV TB 2020/1, Sections A 2.2.1.16 and A 2.2.1.11 (M-LüAR).

Technical rules

Muster-Richtlinie über brandschutztechnische Anforderungen an Lüftungsanlagen (Muster-Lüftungsanlagen-Richtlinie – M-LüAR) (29 pages)

Fassung: 29.09.2005, zuletzt geändert durch Beschluss der Fachkommission Bauaufsicht vom 03.09.2020; Amtliche Mitteilungen 2021/2 (Ausgabe: 30. April 2021); Fachkommission Bauaufsicht der Bauministerkonferenz; DIBt (Hrsg.)

Application forms

National procedure

A national technical approval (abZ) and/or oder general construction technique permit (aBG) is granted upon application (see Model Building Code (MBO), Sections 16a(2) and18(2) and (4)). This also applies to amendments and supplements to, or renewals of existing approvals and/or construction technique permits.

No formal requirements apply. The following information is needed: name and address of the applicant, description of the product and/or construction technique and its field of use or application, type of decision required (new decision, amendment or supplement to, or renewal of, an existing decision).

Please feel free to use the template below.

Application for a national technical approval and/or construction technique permit (3 pages)

Version: January 2018; Application form

Application for amendment / supplementation / renewal of a national technical approval and/or construction technique permit (4 pages)

Version: January 2018; Application form

Guideline: How to provide drawings for national technical approvals and general construction technique permits (5 pages)

Version: July 2017

  • abZ/aBG
  • Z = new decision | E = supplement | Ä = amendment | V = renewal | G = valid until
    Subject concerned Applicant Decision no. Validity
    from / to
    Brandschutzsystem für Lüftungsanlagen entsprechend DIN 18017 mit der Bezeichnung HS1-1S25-K90-18017S

    Strulik GmbH

    Neesbacher Straße 13

    65597 Hünfelden-Dauborn

    Z-41.6-626 Z: 04.05.2021
    G: 04.05.2026
    Brandschutz-Kanalsystem für Lüftungsanlagen nach DIN 18017-3, Typ VENTISAFE WL

    ZLT Lüftungs- und

    Brandschutztechnik GmbH

    Wilhermsdorfer Straße 28

    09387 Jahnsdorf / Erzg.

    Z-41.6-650 Z: 15.03.2018
    G: 27.03.2023

Juliane Valerius
Head of Section – Fire Protection of Ventilation Systems

Phone +49 30 78730-350
Email jva(at)dibt(.)de

Legal reference documents

Testing, certification, inspection