APPLICATION GUIDE
7
Double Knock
Double knock operation is programmed on site installer and is used to prevent unnecessary evacuation of the site. 2
fires are needed from the selected list before the output condition is satisfied and the output can operate
The operation can be done by address, zone, panel or global.
When selecting the trigger to be by address all the addresses have to be on the same loop and the limit is sixteen.
When selecting the trigger to be by zone then the limit is sixteen zones, which must be on the same panel. Selecting
by zone means that two different zones will have to be in fire before the output condition is satisfied.
When selecting the trigger to be global then any two fires on that panel will satisfy the output condition.
If double knock is required to operate across the network then selecting by panel will allow any two fires on the
selected panels to satisfy the output condition.
NOTE: If Double knock is set by zone – any 2 devices within the same zone will NOT satisfy the condition.
Coincidence (Dependency type C)
Coincidence is different from double knock in that two fires from the allocate device list are required to satisfy the
output condition but one fire from outside the list will also satisfy the output condition.
This function is similar to double knock in the way that it is set up i.e. by address, by zone and has the same
restrictions on the number of trigger devices.
NOTE: If Coincidence is set by zone – any 2 devices within the same zone will NOT satisfy the condition.
Weekly Test
This function allows the user to perform a weekly test single-handed.
Once this function has been selected the panel starts a four-minute timer, when a call point is activated within these
four minutes the panel will operate the sounders and then silence and reset the system.
Once this has been done the weekly test mode will be cancelled. If no call point is activated within the four minutes the
weekly test mode will be cancelled.
During this test mode the interface outputs will not operate neither will the FRE and FPE outputs
FRE: Fire Routing Equipment typically used to operate a remote centre communicator.
FPE: Fire protecting Equipment typically used to control fire doors.
NOTE: If ‘disable all outputs’ is selected, weekly test or walk test will still make the sounders operate
Sounder Level Test
This option allows for Db readings to be taken without causing too much disruption to the site occupants.
Selection of the sounder level test mode turn the sounders on for 15 seconds enabling a reading to be taken and then
turn them off for 30 seconds allowing the engineer to move on to the next area.
CF3000 / DF6000 / FX6000 Application Guide
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