Smoke Extract Fans in UK Buildings: Specification and Testing

Smoke extract fans must operate reliably at high temperatures during fires. We explain specification, standards, and testing requirements.. Smoke Extract Fan Specification Performance Requirements BS EN 12101 3 — Smoke and heat exhaust ventilators Must operate for 2 hours at 300°C (F300) or 400°C (F400) Emergency power supply required Automatic activation from fire alarm or smoke detection Classification F200 — 2 hours at 200°C (car parks) F300 — 2 hours at 300°C (general buildings) F400 — 2 hours at 400°C (high fire load areas) Testing and Commissioning Factory acceptance testing at rated temperature Site commissioning with airflow measurements Integration testing with fire alarm and BMS Annual maintenance and flow verification For smoke ventilation design, contact us.