Page 139 - OP_Katalog_EN

Fire protection – Requirements

for duct smoke detectors

The (LüAR) national German fire safety requirements • With heat recovery systems, the spreading of fire
of ventilation systems are the valid guideline in between exhaust and supply air must be prevented by
the building inspection guidelines for various states. means of technical measures (i.e. protection of supply air
Additional information can be found in the model policy through fire flaps and smoke release equipment devices
on fire protection requirements of ventilation systems or smoke flaps) ...
(M-LüAR), supervision of the commission. The necessary
certificates (testing, approval, monitoring) for smoke • Outdoor air and exhaust air openings (outlets)
detectors for smoke and fire flaps in ventilation systems of ventilation ducts must be arranged or constructed
are stipulated in the MVV TB . so fire or smoke cannot enter other floors, fire zones,
units of use, stairways, spaces between stairways and
Among other things, these publications specify the exits going outdoors or corridors. This stipulation is
following: considered met when the openings of ventilation pipes
are protected by fire flaps ...
• No smoke may pass via the air supply air systems
into the buildings. The transfer of smoke via the outside Based on these principles, please note the following in
air through fire protection flaps with smoke release regard to our KRM-X® duct smoke detector:
equipment or smoke flaps is to be prevented ...
For the control of fire or smoke flaps, general building
• For ventilation systems with circulating air the authorities’ approved smoke detectors by the DIBt
supply air has to be protected against the transfer (German Institute for Building Technology) are required
of smoke by shut-off devices with smoke release (see lists of building regulations MVV TB). These are our
equipment or smoke protection flaps. The smoke DZ versions of the KRM-X® with approval: Z-78.6-249.
release equipment can be placed in re-circulation or in
exhaust air ducts. They can, however, be combined in For the fan control, monitoring of ventilation pipes and fire
the supply air duct after the outside and re-circulated air alarms, VdS approved KRM-X® types without DIBt can be
have been combined, if the intake of external air is to be used (KRM-X-1, KRM-X-1-MOD, KRM-X-1-BAC, KRM-X-2,
protected against smoke entry at the same time ... When KRM-X-2-MOD, KRM-X-2-BAC).
the smoke release equipment responds, the ventilators
must be turned off unless their continued function Note:
serves to prevent smoke spreading further. Subject to change. Local rules and regulations are valid.

• Air handling units must have fire protection flaps Visit our free webinars covering fire protection in ventila-
(except exhaust or outdoor air ducts, which lead directly tion systems. You can find our current courses at https://
to the outside) at the inlet and outlet; the fire flaps must www.oprg.de/online-schulungen
be equipped with smoke release equipment devices ...

• In ventilation systems for special structures such
as buildings or areas with a large number of people or
rooms for sick or disabled people, or rooms with high
fire or explosion hazards, it is necessary to determine
whether additional or other fire protection measures are
necessary, e.g. additional smoke release equipment for
fire flaps to keep smoke from traveling.
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For our current prices see www.oppermann-regelgeraete.de/en/downloads/catalogue-1 Catalog 2024 | Fire protection | 139