Automist
®
Fixed Wall Head Handbook v1.2.3
Plumis Ltd Copyright © 2017. All Rights Reserved.
Page 8 of 41
S MA RT SC AN
®
The nozzle is positioned at a recommended strategic height of 1.4m to 1.5m from the ground to avoid
obstructions by most domestic furniture while still placing mist close to the base of the fire, maximizing
the effectiveness of the very small water flow.
Fire Performance and Regulations Compliance
LABC Registered Detail
Automist is described in an LABC Registered Detail (EW171) for use in open plan layouts in loft converted
houses in England and Wales. The Registered Details scheme allows UK building control officers to approve
a project without a long and detailed investigation.
The full report "Ad-hoc tests on watermist systems utilising the principles of the procedure defined in Draft
BS 8458: 2014: Annex B, Method for Measuring the Capability of a Watermist System to Control a Fire -
"Room Fire Test for Watermist Systems with Automatic Nozzles" Document Reference 356142" can be
downloaded from the Plumis website.
A copy of the report can be downloaded from the Plumis website.
Fire Engineered Applications
Automist may be used in a variety of applications as part of a fire engineered solution where suppression is
used as a key enabler for means of escape by extending tenable conditions.
A fire engineering assessment has been commissioned by BB7 Fire Engineering to allow fire engineers to
more easily interpret the fire performance of Automist using Fractional Effective Dosage (FED) heat
calculations for the testing carried out on the BS 8458:2015 test protocol. FED Asphyxia for toxic gases did
not need to be measured as the suppression test protocol is an open door ventilated fire where there is no
retention of combustion gases and oxygen can be freely replaced in the test chamber.
A copy of the report can be downloaded from the Plumis website.
EN 60335-1:2002
Household and similar electrical appliances
–
Safety:
Automist
System Clarifications
•
The Automist system is a Class I appliance, meaning the system provides additional electric
shock protection in the form of a fully earthed pump enclosure
•
The system therefore uses protective impedance because of the earthed enclosure
•
The Automist pump unit is a stationary device
•
The spray head is a fixed appliance
•
The Automist pump unit
uses a type Y power supply cord
–
if the cord is damaged, it can only be
replaced by Plumis (the manufacturer) to avoid a hazard
