Spacing of detectors are :
Note:
- All detectors shall be of a type such that they can be tested for correct operation and restored to normal surveillance without the renewal of any component.
- Duplicate sample extraction fans shall be provided. The fans shall be of sufficient capacity to operate under normal ventilation conditions in the protected area and shall give an overall response time to the satisfaction of the Administration.
- Detectors and manually operated call points shall be grouped into sections
- A section of fire detectors which covers a control station, a service space or an accommodation space shall not include a machinery space of category A. For fixed fire detection and fire alarm systems with remotely and individually identifiable fire detectors, a loop covering sections of fire detectors in accommodation, service spaces and control stations shall not include sections of fire detectors in machinery spaces of category A.
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