FAQs

General Understanding

    • Fire dampers are passive fire protection devices installed in HVAC ducts to prevent the spread of fire. They close automatically when temperatures reach a specific threshold (typically 72°C).

    • Smoke dampers prevent the spread of smoke through ducts, triggered by smoke detection systems.

    • Fire dampers react to heat.

    • Smoke dampers respond to smoke and require electrical control systems.

    • Devices that combine both fire and smoke control in one unit.

Installation and Design

    • At points where ducts penetrate fire-rated walls, floors, or partitions.

    • Yes, following manufacturer instructions and appropriate fire strategy.

    • Passive dampers that expand under heat without mechanical movement.

Testing and Maintenance

    • Annually, as per BS 9999:2017. More frequently in high-risk areas.

    • Drop test or functional test.

    • Visual inspection.

    • Cleanliness and accessibility checks.

    • Yes, with integration with manufacturer control panel, BMS or fire alarm systems for functional testing.

Certification & Documentation

    • Yes, including location, status, and photographic evidence.

    • Yes, dampers must conform to BS EN 15650 and display appropriate certification.

Common Issues

    • Blocked or seized dampers.

    • Missing fusible link.

    • Poor installation.

    • Lack of access.

    • Legal action, insurance issues, safety risks, and possible fines.

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