Automist
®
Fixed Wall Head Handbook v1.2.3
Plumis Ltd Copyright © 2017. All Rights Reserved.
Page 33 of 41
S MA RT SC AN
®
factory mode), to see whether either will set your system off. Use ALARM TEST MODE which
mutes the pump while doing any connectivity tests. If the ALARM lamp lights when you
sound any given detector for a few seconds, that means that the Pump will activate when
that alarm goes off. This should only happen for the specific heat detectors linked to
Automist.
Complete the user manual / information sheet with a permanent pen.
Post-installation checklist
–
Key points for installers and Building
Control
Power supply
•
The Automist circuit should be clearly labelled (a sticker is provided for this purpose).
•
Power to Automist must be provided via an unswitched fused connection unit (FCU).
•
Automist should be supplied using FP200 cable or better, ideally inside conduit or protected 50mm
deep within a wall
•
Automist may be protected by an RCD or RCBO but this protection must not be shared with other
circuits. Therefore Automist should be connected to the non-protected side of the consumer unit.
•
The circuit supplying a single Automist unit would commonly be protected by a type ‘C10’
or ‘
C
16’
, for
example, or ‘C20’
/
‘
C
32’
for two Automist units.
•
If the consumer unit is located in the same fire resisting compartment as the protected area, it should
be protected by an electrical cover unit tested to BS476 Part 22 (1987) & EN1364-1 (1999).
Water Supply
•
check valve and filter must be installed to protect the mains water supply from back flow and the pump
from debris (supplied in kit).
•
Inlet water must be connected and the valve left open.
•
WRAS approved isolation valves (or equivalent) are required so that the Automist system can be shut
off from the water main. All such valves should be labelled with the included supply warning labels.
•
Priority valves are not normally required but should be used in circumstances where the water supply
may otherwise be inadequate.
•
Several pumps can be supplied from the same 15mm water pipe as long as they are not intended to
activate at the same time. Larger diameter piping may be required for simultaneous activation of more
than a single pump.
Pump & Placement
•
All Automist units should have been successfully commissioned using heat detectors, with outlet
pressure verified.
•
Minimum ventilation / cupboard size requirements met (124 litres).
•
In a room or cupboard that is separated by a fire resisting partition from the mist-protected room(s)
that it serves, or the pump located such that it is: a) unlikely to be affected by a fire, b) protected in the
event of fire; c) unlikely to be affected by flooding.
•
Each
Automist pump should show “System OK”
(green LED), indicating it has been successfully
commissioned.
