Plumis Automist Series Technical Manual

Text of Plumis Automist Series User Guide:

• Plumis Automist Series, Page 27 of 27 12.5 Overview Below a summary of the results: Test Description Test criteria reached (time in minutes, seconds) FED = 1 @ 1.8 m FED = 2 @ 1.8 m FED = 1 @ 0.6 m FED = 2 @ 0.6 m 8m x 4m room with open doors Automist @ 5m* Not reached Not reached Not reached Not reached Automist @ 8 m 3 m 3 s (heat) 3 m 13 s (heat) Not reached Not reached Free Burn 2 m 19 s (heat) 2 m 27 s (heat) Not reached Not reached 8m x 4m room with closed doors Automist @ 8 m 23 m (heat) Not reached Not reached Not reached Free Burn 3 m 40 s (heat) 12 m 53 s (heat) 7 m 30 s (heat) 21 m 3 s (heat) 4m x 4m room with closed doors Automist @ 3 m 25 m (asp

• Plumis Automist Series, Page 8 of 27 The Automist unit will be activated by an alarm which will ensure that: • Audible warning is provided throughout the protected area. • In addition to Automist’s integrated sounder, we recommend that the detector or alarm system that activates Automist also includes its own sounder.Guidance on re detection in dwellings is contained in BS 5839: Part 6. • Automist must not be activated by an early warning interlinked system (which might include smoke alarms). A separate alarm circuit should be used or provisions should be made so t

• Plumis Automist Series, Page 9 of 27 A re suppression device like Automist aims to control and suppress res, signicantly reducing the risk of injury, life loss and property damage by maintaining tenable conditions for as long as possible while occupants evacuate. This is achieved in several ways: • Reduction of room temperature in the region of the re. Water mist devices achieve this by consuming much of the re’s energy in converting water to steam. • Reduction of smoke and toxic gases. Water mist devices achieve this by the production of copious amounts of steam in the immediate vicinity

• Page 20 of 27 12 Appendix 12.1 Fire Testing at BRE In one of the most comprehensive test suites ever run on a mist product at the Building Research Establishment (BRE), Plumis veried the effectiveness of Automist with live burns in a series of different scenarios. The test was based on BS EN 1869:1997, DD 8458 1:2010, and the criteria of Scandinavian SRSA/

• Plumis Automist Series, Page 6 of 27 In the event of a re, the system is triggered automatically by a heat alarm or a re panel output. Heat detection is recommended for kitchens in Approved Document B, and effectively eliminates nuisance activation. Unlike conventional sprinklers, Automist can be stopped manually by pressing a button on its control panel or by cutting power to the independent circuit on the consumer unit (marked with an indicator sticker). As Automist uses much less water than a traditional sprinkler system, water damage

• Plumis Automist Series, Page 7 of 27 Automist should be mains fed with a reliable water supply: • 6 l/min ow • 1-10 bar pressure at pump inlet • Standard BSP ¾” connection. For life safety applications exposed or partially exposed pipework must be in copper or steel for robustness. The Automist pump should be: • Proper air circulation must be provided. The system requires there to be a minimum 100 mm gaps are gap between the pump perimeter and the enclosures. • Protected electrically by suitable fusing and powered by an independent circuit either

• Plumis Automist Series, Page 2 of 27 1 This Document Page 3 2 Introduction to Automist Page 3 3 System Diagram Page 4 4 Automist Operation Page 6 5 Quality Assurance Page 6 6 Components and conguration Page 7 7 Fire suppression within a holistic approach Page 9 8 Fire Performance and Regulations Compliance Page 10 9 Use of Automist Page 15 10 Specifying Automist Page 17 1

• Page 25 of 27 4.0 FED Heat 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 Time (mins) 8m x 4m x 2.5m Open Room FED Heat - when it reaches 1.0 it is assumed that an occupant will be incapacitated due to pain. Third degree burns are predicted at an FED of approximately 3.0 control automist @ 5m automist @ 8m 0.0 5.0 10.0 15.0 20.0 25.0 30.0 4.0 FED Asphyxia 3.5 3.0 2.5 2.0 1.5 1.0 0

• Plumis Automist Series, Page 12 of 27 The application of Automist is carefully controlled to ensure that the application does not extend beyond the system capabilities that were established during the BRE re tests. The general rules developed from these tests are included in Section 10 of this document and form the basis of proof of concept for the suppression performance for all actual applications. Where the focus of the Automist application is not something that was directly considered during the BRE re tests the behaviour has been further validated by independent re engineering consultants following recognised re engineering principles discussed in BS7974 to demonstrate suitabilit

• Plumis Automist Series, Page 14 of 27 Electrical supplies A separately fused connection to the re pump taken after the meter and from the supply side of the domestic fuse box using re resisting cable. All other devices on the system should continue to function in the event of a complete failure of mains power (as per BS5839 Part 6) Automist must remain powered in the event of a re and therefore must not share a mains circuit or RCD with appliance and sockets. The pump unit electrical supply will adopt the BS9251 installation recommendations. Achieved. An identical level of design redundancy is included into the Automist system as would be expected of a residential

• Plumis Automist Series, Page 28 of 27 Automist’s Technical Guide Version 2.5 © Plumis Ltd. 2011 - All rights reserved. Ref: Plu6/v.1 (LABC) For further information, please contact: Plumis Ltd. HMS President (1918) Victoria Embankment London United Kingdom EC4Y 0HJ www.plumis.co.uk [email protected] C O M M I S S I O N S P E C I F I C A T I O N I N S T A L L A T I O N ACCREDITED INSTALLER Automist

• Plumis Automist Series, Page 5 of 27 b) Automist under-tap kit (4N) Assembled Automist emitter - outer cover and o-ring - manifold and two o-rings (base & upper) - six protective caps - four watermist nozzles High pressure hose Stainless steel braided 3/4” water supply hot & cold water supply pipes Fused connection unit on a separate circuit Automist supply label & cable tie Wired or wireless heat alarm with NC and NO relay functionality Standard monobloc tap ¾” single check valve ¾” washin

• Plumis Automist Series, Page 22 of 27 12.2 Simulatedfurniturereinaclosedroom The graph below details the FED measurements at 1.8 m high in the 8 m x 4 m closed room scenario. In an unsuppressed re an occupant 3 m from the re would be incapacitated due to pain in less than 4 minutes from ignition. After 13 minutes survivability is highly unlikely due to excessive burns. In the same scenario with Automist 8 m from the re, incapacitation and unconsciousness are delayed until 23 minutes

• Plumis Automist Series, Page 4 of 27 Two examples of generic system layouts are detailed on the following pages. As an “pre-engineered” solution which is not covered within any one British Standard the following system layouts are proposed as our recommendations, however these may need modication during the course of negotiation with approving authorities with regard to a specic project specication. a) Automist wall-mount kit (3N) 3 System Diagram A discreet single-gang wall box holds the water mist spray head in place. The pump can be housed in a cupboard, under a

• Page 26 of 27 Automist can also be effectively used for ashover prevention; in the graph below you can see how it reduces the temperature in the room from 410°C to 155°C at its peak on the higher thermocouple. This allows a compartment to comply with a 60 minute re containment requirement without any passive re protection devices. 12.4 Sim

• Plumis Automist Series, Page 16 of 27 • Providingadequateprotectionwhenredoorsareeitherremovedordowngraded In the example of a re engineered solution, where the plans are compliant with Approved Document B principles, the suppression capabilities of Automist can be used in conjunction with an analysis of the proposed doors material properties and comparative re and temperature performance, where the client wished to either use a door which was not re resistance certied or was inherently non-

• Page 17 of 27 Automist design specication guidelines state that a single pump can cover an area of up to 32m 2 , with a maximum ceiling height of 5m. Based on Plumis’s experimental data from BRE, spray heads must be located within 5m line of sight of any possible re location. 10 Specifying Automist 5m 5m Correct Incorrect

• Plumis Automist Series, Page 3 of 27 Automist is a re suppression appliance designed for residential use. Its primary application is in the gap between standardised sprinkler systems, which are designed to provide suppression to every room in a property, and building and housing regulations, which in many circumstances require re suppression in a single open-plan “access room”. All major UK guidance documents on residential re safety, including Approved Document B, The LACoRS guide, and Scottish Building Regulations, recognise

• Plumis Automist Series, Page 15 of 27 In this section we detail typical applications for Automist, how it should be specied, and present some additional points of comparison with conventional sprinklers. • Providingseparationfromriskareas The guidance in Approved Document B recommends for studio ats that the kitchen should be ‘remote’ from the entrance door and escape route. Although it is preferable if the cooking facilities are away from the at entrance the lack of clearly dened guidance on the meaning of ‘remote’ can lead to inconsistency. Looking at the UK national 

• Plumis Automist Series, Page 19 of 27 Automist should be specied, commissioned and signed-off by Plumis or an Accredited Reseller. Each reseller is fully trained to ensure that every project is installed to a high standard, receiving a Plumis Certicate of Accreditation on successful completion of the training. Automist is an innovative re suppression unit which can be installed as a compensatory measure for layouts that don’t match the conventional prescriptive guidance from Approved Document B or supporting guidance for the Regulatory Ref

• Plumis Automist Series, Page 18 of 27 Small potentially blocked or shadowed oor areas shall be permitted on a horizontal plane in compartments of 64 m 2 (two pump units) or less as long as the maximum area of the total contiguous shadowed oor area, regardless of geometric conguration, does not exceed 2 m 2 . Preliminary Automist designs can be recommended by speciers by following these recommendations, however, Plumis accredited installers are trained to specify, install, commission and maintain the Automist system. Their early involvement in the project is recommended as they are required to verify installation proposals, provide critical supporting techni

• Page 23 of 27 The graphs below show the results for the same test but at a lower height of 0.6 m. This height could represent an inhabitant who is sleeping, sitting or has fallen unconscious. After 21 mins and 22.5 mins both heat and asphyxia threaten survivability in the unsuppressed scenarios. However in the room with Automist operating, FED asphyxia does n

• Plumis Automist Series, Page 1 of 27 Automist TM Technical Guide Product specication and technical results from a test suite at BRE Global to enable building control and re industry professionals to assess or specify Automist. Plumis Ltd. Seamless Fire Protecon www.plumis.co.uk A technical guide for: - Building Control - Fire Industry Professionals New Edition Version 2.5.0 RD171

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