Fire and life safety interlocks, smoke control and cause-and-effect logic — designed, integrated and tested against the BMS you already run, on any head-end.
Broken interlock between the fire panel and BMS controller, or a points mapping issue after a panel change.
Cause-and-effect logic out of date, or an HVAC shutdown sequence that was never re-tested after a plant change.
Access control interlock miswired or dropped from the cause-and-effect matrix during a later system upgrade.
One or more zones not producing the correct building response — traced, corrected and re-certified.
Wire and configure the interlock between fire alarm panels and the BMS head-end for a coordinated building response.
Build and verify the cause-and-effect matrix so every fire trigger produces the exact response the fire strategy requires.
Configure automatic HVAC shutdown, smoke extract activation and pressurisation on fire alarm signal.
Ensure door holds, maglocks and access control release correctly and immediately on alarm activation.
Re-map and re-test interlocks after any fire panel or BMS head-end upgrade, with full documentation.
24/7 response for interlock or life safety faults, with same-day attendance for commercial sites.
Hazsentry integrates fire alarm and life safety systems with the building management system, including smoke control, interlocks and cause-and-effect logic, for commercial and industrial buildings across the UK. 24/7 emergency, same-day callout available.
Usually a broken interlock between the fire panel and the BMS controller, an outdated cause-and-effect matrix, or a points mapping issue after a panel or firmware change. We trace the signal path and restore the correct response.
Cause-and-effect testing confirms that a specific fire alarm trigger produces the correct building response — smoke control activation, HVAC shutdown, door release — exactly as designed. It's required after any change to fire or BMS systems and for ongoing compliance.
Yes. We configure the BMS so a fire alarm signal automatically shuts down or reconfigures HVAC, activates smoke extract, and releases door holds, coordinated through a single cause-and-effect strategy.
Cost depends on the number of interlocks, the fire strategy complexity, and the existing BMS platform. We provide a fixed quote after a site survey and review of the fire strategy.
Yes. We integrate fire and life safety interlocks with Trend, Tridium/Niagara, Honeywell, Schneider EcoStruxure and Johnson Controls Metasys, regardless of who installed the original fire system.
BS 5839 governs the fire detection and alarm system itself; where that system interlocks with the BMS (smoke control, HVAC shutdown, door release), those interlocks need their own periodic cause-and-effect verification as part of the building's fire strategy.
Yes. Panel and head-end upgrades frequently break existing interlocks and points mapping. We re-map, re-test and re-certify the full cause-and-effect chain after any upgrade.
Emergency requests get a call back straight away, 24/7. Everything else, the same working day.
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