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TWINFLEX

pro² Control Panel Engineering and Commissioning Manual

Alarm Confirmation

Introduction

The  instructions  in  this  section  apply  only  to  the  Alarm  Confirmation  mode  which  is  a  part  of  the
TWINFLEX®pro² control panel and is supplementary to the rest of this manual.

The Alarm Confirmation technology has been designed primarily to address the problem of unwanted
alarms in apartment blocks or ‘Houses of Multiple Occupancy’ (HMO).

The Alarm Confirmation facility enables certain detector alarms to be checked, or confirmed, before the
entire system is activated. Furthermore, a local (at that detector) or zonal ‘Alarm Confirmation Warning’
sound is given, allowing any persons nearby to check the area for a possible fire. If the cause of the
alarm is removed (e.g. burnt toast or a dust cloud) then the ‘Alarm Confirmation Warning’ will cease and
the system returns to normal. If the cause of the alarm is still present at the end of the confirmation time
then the entire system enters a full alarm state.

System planning prior to installation is essential, as certain zones need to be cabled separately, in order
that  they  may  be  configured  for  ‘Dwelling’  (delayed)  or  ‘Communal’  (instant).  e.g.  The  stairwell  and
communal corridors in a block of apartments will need to be wired on separate zones to the apartments.

If there is any doubt please refer to your supplier.

Zone Type

Each zone on the system can be separately configured as a Communal ‘Instant’ zone, or as a Dwelling
(confirmation)  zone.  ‘Instant’  zones  should  be  used  for  communal  areas  in  apartment  blocks  and  for
escape routes such as stairwells, where normal fire alarm operation is required. Dwelling (confirmation)
zones  introduce  an  ‘Alarm  Confirmation  Delay’  to  a  smoke  detector  alarm  on  a  zone,  for  use  within
apartments  and  other  areas  where  unwanted  alarms  are  likely  to  be  a  problem.  Manual  Call  Points
always give instant operation, whichever type of zone they may be a part of.

Note:

If the Zone Mode is set to CP/DET then a heat detector alarm will operate in the same way as a

smoke detector alarm and use the ‘Alarm Confirmation Delay’. In order for a heat detector alarm to
override the ‘Alarm Confirmation Delay’ the zone mode must be set to CP/SM/HT.

Zones - Normal Operation in Communal Areas

Communal zones are those covering general access areas such as entrance hallways, corridors,
stairwells etc., including any area which is an escape route for a private or dwelling area.

The activation of any Manual Call Point or detector in these areas generates an immediate alarm and
operates the sounders in all areas.

The drawing below shows a typical arrangement with the communal areas shaded. This area should be
cabled on its own zone and configured as a Communal Zone in the Zone Type setting menu.