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Suspension mounting
Suspending the Smoke Screen range is achieved using the ‘Suspension Kit’ comprising a length of
Uni-strut, two sections of threaded bar and fixings. Fix the required length of M8 threaded bar to
the wall bracket (use the holes in line with the bracket hooks) using 4 x nuts and 4 x 25mm
washers (4). Fix the uni-strut into place. There are a range of fixings to accommodate concrete
ceiling, girders etc; if in doubt contact the fixing supplier. Attach the threaded bar to the uni-strut
using the channel nuts, 38mm washers and M8 nuts (5). Insert a set screw a few threads into the
lower hole of the top pair of threaded holes on each side of the Smoke Screen (2). As described
under “Wall Mounting”, lift the Smoke Screen into position and insert another set screw on each
side to lock the unit in the
‘non-angled’ position. Tighten all four set screws. Any final adjustments
to height can be made at this stage as the nuts and the threaded bar will take the weight of the
Smoke Screen. The final assembly, viewed ‘through the ceiling’ is in photo (6).
CONTROLLING THE SMOKE
Inputs.
There are 3 sets of input connections on the Smoke Screen (Alarm Set, Trigger and Hold Off)
that should be connected to clean contacts. For the Smoke Screen
to produce ‘smoke’ all 3 sets of
connections must be ‘open circuit’ (this can be changed to ‘closed’ as described under ‘Trigger Mode’ in
the ‘Programming’ section). If one set of connections is ‘closed circuit’ then the Smoke Screen is
prevented from producing smoke. Hence the production of smoke is controlled using one or a
combination of the following:
Alarm Set
– a normally closed relay connected across the Alarm Panel ‘Set’ connections, which
open when the Alarm Panel
is ‘Set’ and closing when the panel is ‘Unset’.
Trigger
– a normally closed relay connected across the Alarm Panel ‘Trigger’ or ‘Intruder’
connections, which open when the Alarm Panel
is in ‘alarm’.
Hold-off
– usually a PIR or movement sensor connected to the ‘Hold-off PIR’ connections (N/C),
which opens when the sensor sees movement.
Additional Hold-off
– any form of N/C relay or micro switch can be connected to the ‘Hold-off’
connections. Where fitted in addition to the Hold-
off PIR both sets of relays must be ‘open’ to
produce ‘smoke’.
Outputs.
Outputs are provided for connection to the Alarm Panel for ‘Ready’, ‘Low Fluid’, ‘UPS
Status’ and ‘Verification Output’. See the notes on the “Generic Connection Diagram” for the
function of these outputs.
4
5
6
Содержание SENTINEL S30
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