Product Manuals/Man-1088_Sigma XT_26 Page 4 of 40
1. Introduction
The SIGMA XT control panel is designed in accordance with European standards EN54-2 and
EN54-4 Fire Detection and Fire Alarm systems - Control and Indicating Equipment and EN12094-
1 Fixed firefighting systems - Components for gas extinguishing systems - Part 1: Requirements
and test methods for electrical automatic control and delay devices.
The control equipment is a combined fire alarm control panel and extinguishing system and has
three detection zones, any or all of which are capable of contributing to the extinguishant release
decision.
Control panels have an integral, mains powered battery charger and power supply designed in
accordance with the requirements of EN54-4.
In addition to the requirements of EN54-2 the control panel has the following facilities:
Test condition to allow the automatic resetting of zones in alarm for testing purposes. EN54-2 Section 10
option with requirements.
Delay of the actioning of fire alarm devices (sounders) so that an alarm may be verified before a premises is
evacuated. EN54-2 Section 7.11 option with requirements.
Fire alarm devices to enable an audible warning to be sounded throughout premises upon the detection of a
fire condition or the operation of a manual call point. EN54-2 Section 7.8 option with requirements.
In addition to the requirements of EN54-2, all control panels have voltage free relay contacts for
fire and local fire which operate upon a fire condition. These are to be used for local control and
signalling.
In addition to the requirements of EN12094-1 the control panel has the following facilities:
Delay of extinguishing signal of up to 60 seconds. EN12094-1 Section 4.17 option with
requirements.
Signal representing the flow of extinguishing agent to indicate the released condition. EN12094-1 Section
4.18 option with requirements.
Monitoring of the status of components by way of a low pressure switch input. EN12094-1 Section 4.19
option with requirements.
Emergency hold device to enable the extinguishant delay time to be extended. EN12094-1 Section 4.20
option with requirements.
Control of flooding time to deactivate the releasing output after a set period of time. EN12094-1 Section 4.21
option with requirements.
.
Manual only mode to disable the release of extinguishant via automatic detection devices.EN12094-1
Section 4.23 option with requirements.
Triggering of equipment outside the system by way of first and second stage contacts, extract fan output
etc. EN12094-1 Section 4.26 option with requirements
Activation of alarm devices with different signals to indicate pre-discharge and released warnings using
different sounds. EN12094-1 Section 4.30 option with requirements.
