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Automist Smartscan Hydra®

Residential Sprinkler equivalent

Automist Smartscan Hydra® can be used in the same residential applications as traditional sprinklers.

BS 8458 Compliance

Automist Smartscan Hydra® conforms to BS 8458:2015 Fixed fire protection systems – Residential and domestic water mist systems – Code of practice for design and installation. Automist® has been extensively third party tested and holds a BSi verification certificate which can be found by following this link VC 712581-1


  • Spray Head - The spray head must be installed at a height of 1200 - 1450mm from the finished floor level in non-kitchen area (Kitchen Areas are different, please ask our designer for more information)

  • Activation Method - Wired or wireless detectors in combination with scanning infrared sensors on the nozzles electronically trigger Automist, acting as an initiation device equivalent to a glass bulb bursting under the influence of heat.

  • Suppression - 6 litres per minute with a 65 degree vertical blade Spray Pattern 

  • Pump - 365 mm (height) x 240 mm (depth) x 181 mm (width) and weighs 7kg connected to a 3/4” water supply

  • Electrics - Automist Smartscan Hydra requires an independent 230V A.C. / 50Hz electrical supply, not shared with other unrelated devicesThe Automist Smartscan Hydra system, fire detection and alarm system may use this circuit, which must remain powered in the event of a fire. Power to Automist Smartscan Hydra must be provided via an unswitched fused connection unit (FCU). Automist Smartscan Hydra must be supplied using FP200 cable or better, ideally inside conduit or protected 50mm deep within a wall to a C16 RCBO Breaker.

Automist Smartscan® received the highest distinction in the Red Dot Award: Product Design 2016, which goes to only 1.5% of all entries. Selected by an independent expert panel, according to criteria such as degree of innovation, formal quality, functionality and ecological compatibility. The jury awards the highest single distinction “Red Dot: Best of the Best” for ground-breaking design.

Automist Smartscan Hydra

Watermist fire suppression systems have demonstrated their value in assisting the protection of life and property for many years. A correctly designed, installed, and properly maintained Automist fire suppression system can detect, suppress, and control a fire at an early stage of development, and activate an alarm. The automatic operation of the system rapidly reduces the rate of production of heat and smoke, allowing more time for the occupants to escape to safety or be rescued.

The controller continually monitors the thermopile sensors by reading the temperature while parked, ensuring that all heads are ready to operate. When triggered by a Plumis multi-sensor wireless alarm or a wired detector, all the linked spray heads will begin scanning. They start measuring the temperatures within the room using an infrared thermopile sensor. The scan is looking for an exceptionally high temperature reading, or a differential increase between scans. Once the temperature exceeds a threshold that head is deemed to have successfully located a fire. All heads which locate a fire during a scan are then compared to see which has the best view.


The selected spray head will lock onto the selected location, and activate the high-pressure pump, driving mains water through the unique nozzle unit, quickly directing a dense fog into the location of the fire. The high momentum vertical spray orientation with a horizontal trajectory is designed so fires can be saturated with a turbulent flow of mist, suppressing the fire.

What to do if the system activates?

Once the system is activated, it will remain beeping whilst the pump is running.

To stop it, you can either:


1. Wait until the pump has run continuously for 30 minutes. It will then exit to Idle mode (uncommissioned)

2. Press the stop button and the pump will stop discharging but the system will remain beeping for 12 minutes. During the first 2 minutes, the pump will not discharge again, but between the end of the second minite and the end of the 12th minutes (therefore during the last 10 minutes), if a detector is activated again the pump will restart and will discharge mist at the same direction it first discharged. This mode was created to address the fire returning after an occupant believes it has been extinguished, at which point they stop the pump discharge and exit the property. When in this mode, do not switch off the power or it will reset the 12-minute timer. If the alarm condition has ended, Automist Smartscan Hydra will return to an uncommissioned state and requires full recommissioning.


Please be patient and wait for the 12 minutes to end before trying to recommission the system.

IMPORTANT! Reporting fires which have been controlled or extinguished fires, false positives or false negatives is useful for Plumis for continuous improvement. Please contact Plumis ( Further information can be gathered from the system as Automist has a "blackbox” (like aircrafts) that logs all the product's activity and input from sensors to validate that it was a growing fire that was tackled.

Automist® Smartscan Hydra® are the registered trademark of Plumis Ltd.

Plumis Ltd Copyright© 2024

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