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Automist Smartscan Hydra
®
DIOM Manual - version 3.01.0
Plumis Ltd Copyright © 2020. All Rights Reserved.
Page 40 of 116
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Components
BS 8458 states in its introduction that ‘the testing and approval of watermist system components for
residential and domestic applications is a developing area’. As per FM 5560-2017, page 16:
‘Due to the current state of water mist system technology, a comprehensive absolute standard for the testing of
water mist components is not possible. Since each water mist system is unique in its operation and design, the
component testing of the water mist system shall be performed on a case-by-case basis.’
Plumis is pursuing third party certification for Automist components. This is currently being actively pursued with
Underwriter Laboratories (UL) in the US through a custom full system certification program for an electronically
controlled watermist nozzle system, as Automist nozzles are outside the scope of BS 8663 and of BS EN 17450
and there is no certification available in the UK for this type of system. As soon as completed, all supporting
evidence will be made available publicly. In the meantime, Plumis has carried out in-house testing to verify
component durability and reliability, following UL 2167 “Water Mist Nozzles for Fire Protection Service”:
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6 - General Construction (6.2 and 6.5 not applicable as electronically controlled nozzle)
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7 - Strainer and Filter
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8 - General Performance: (section 8.4, Residential - Section 44)
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9 - Watermist Nozzle Requirements
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10 - Exposure Tests on Nozzles Incorporating Polymeric Gaskets: Tests to be carried out on O-rings
used on assembled system (pivot and nozzle)
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13 - Water Flow Test
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15 - Water Droplet Size and Velocity: Positions customised for the horizontally oriented, 65° vertical
spray fan, so that nozzle changes can be shown to provide equivalent spray characteristics.
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22 - Hydrostatic Strength
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31 - Heat Resistance
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32 - Vibration (a, b, and c)
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36 - Rough Usage Test
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37 - Impact Test
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41- Clogging Test
For example, sprayhead swivel durability tests have been completed on Smartscan hardware to verify how
many scans the sprayhead would perform before failure. Hydra completed up to 70,000 cycles, well over
the expected lifetime requirement and the 6,000 cycles demanded for certification purposes.
Further details on the component testing are available on request.
Technical Specification for Hydra Data & Alarm Cables
Cables installed into buildings must now be compliant with the ‘Construction Products Regulations’ CPR and
certified to European harmonised standard EN50575.
IMPORTANT:
The maximum cable lengths for Hydra are indicated below, installation using longer cables is
not approved. Wire ends must have bootlace ferrules fitted to improve connection reliability and avoid
short circuits.