MORLEY-IAS
ZX Fire Alarm Control Panels
Page 56
Document No. 996-175-000-1, Revision 01
Commissioning Manual
16.2 Overriding Delays on Individual Outputs
•
The panel allows delays to be set on individual outputs, as required.
•
It is recommended that a facility is provided, in the installation, to override any delayed circuits at
access Level 1.
•
This can be achieved in either of two ways as follows:
1. Assign a manual call point to a zone in which all outputs act immediately.
2. Allocate all delayed outputs to a system event. Arrange a manual call-point to generate this event.
•
If a specific manual call-point (pull station) is to be used for this purpose, it may be desirable to locate
the call point either adjacent to the control panel or on a main exit route and label it accordingly.
16.3 Optional Features (Operational Features With Requirements)
EN54
9
•
The Fire Alarm Control Panel has a number of optional features. The definition and
operating characteristics of these features are described below.
16.3.1 Output to fire alarm devices:
•
It is possible to silence the fire alarm devices at access level 2
•
Following silencing, it is possible to re-sound the fire alarm devices at access level 2.
16.3.2 Delays to Outputs:
•
The operation of delays to fire alarm devices is selected at User Level 3 and applies to:
1. Fire
detectors
2. Manual call points
3. Signals from specific zones.
•
The delay times are configurable at User Level 3 and can be adjusted in 10-second increments up to
a maximum delay of 30 minutes.
•
It is possible to override these delays.
•
The delay to one output signal does not affect the action of the other outputs.
16.3.3 Coincidence Detection:
•
The fire alarm control panel can inhibit the output to fire alarm devices until two or more signals are
received from detection points operating within the same zone.
•
When programmed to operate in this manner the following applies:
1. It can only be selected at User Level 3.
•
Inhibiting the programmed fire alarm output signal in this manner does not affect the action of any
other outputs.
EN54
!
EN54-2 7.11c
Delays to
Outputs
.
•
Setting a delay of more than 10 minutes is non-compliant.
