ISO 7240-29:2024

Overview

ISO 7240-29:2024 - Fire detection and alarm systems - Part 29: Video fire detectors specifies requirements, test methods and performance criteria for video fire detectors (VFDs) operating in the visible spectrum for use in fire detection and alarm systems installed in and around buildings. The standard is intended for VFDs that work with visible-light cameras; it can be used as guidance for other VFD types but does not cover detectors with special or proprietary risk‑specific features outside its defined test and assessment methods. See ISO 7240-1 for general fire detection system requirements.

Key topics and technical requirements

ISO 7240-29 covers both design and verification elements, focusing on practical performance and robustness:

• Conformity and performance criteria for VFD operation in building alarm systems.
• Fire phenomena and fire sensitivity testing procedures to determine detection reliability.
• Immunity to unwanted alarms, including tests for light-source and environmental interference.
• Detection range, camera lenses and lens monitoring, including tests for blocking, focus fault and lens protection.
• Ambient light operating levels (minimum and maximum) and requirements for non‑uniform illumination.
• Software requirements (design, storage of programs/data, and related verification).
• Tests and test conditions: atmospheric conditions, mounting arrangements, repeatability and reproducibility, measurement of response thresholds, and test reporting.
• Operational features: individual alarm indication, monitoring of detachable cameras, on‑site adjustment of response behaviour, and connection to ancillary devices and the FDCIE transmission path.
• Environmental and mechanical considerations: operating temperature limits and protection against ingress of foreign bodies.

(The standard’s table of contents details many specific test types such as fluorescent/LED beacon immunity, arc welding tests, and other light-source immunity assessments.)

Applications and who uses it

ISO 7240-29 is essential for:

• Manufacturers of video fire detectors for product design, compliance testing and certification.
• Test laboratories and certification bodies performing type-approval, conformity assessment and performance verification.
• System designers and integrators specifying VFD selection, placement and integration with fire detection and control/indicating equipment (FDCIE).
• Installers and commissioning engineers implementing on-site adjustment, lens monitoring and system tuning.
• Building owners, facility managers and regulators seeking procurement criteria and assurance of detector performance in occupied spaces.

Related standards

• ISO 7240-1 - General requirements for fire detection and alarm systems.
• This part is one element of the ISO 7240 series (fire detection and alarm systems), which collectively addresses sensors, detectors, control equipment and test methods.

Keywords: ISO 7240-29:2024, video fire detectors, VFD, fire detection and alarm systems, test methods, performance criteria, camera lens monitoring, light-source immunity.