AddSecure IRIS-4 Technical Reference Manual page 52

7 Installation for EN54-21:2006 compliance
7.1 Introduction
Some of the IRIS-4 range of terminals are certified as compliant with the European standard EN54-21:2006 –
Fire detection and fire alarm systems - Alarm transmission and fault warning routing equipment". To comply
with this standard there are conditions to which the installation must comply. These conditions apply both to
the terminal and to the fire CIE. This guide describes these conditions.
Note: if these conditions are not complied with, then the installation will not be compliant with EN54-
21:2006.
All other aspects of the installation are covered in the other sections of this document.
7.2 General description of the equipment
IRIS-4 terminals are used to take alarms from fire CIE and transfer these reliably over IP telecommunication
networks such as broadband and cellular. The interface of the CIE uses inputs to the terminal and outputs
from the terminal.
Depending on the terminal type, backup communication over 4G/3G/2G or PSTN is also provided.
All communications paths can be constantly monitored (supervised) so any failures are reported to the ARC.
The terminals comply with both transmission system types defined in Annex A of EN54-21:2006:
Type 1: signaling path is Ethernet (e.g., broadband), cellular or Ethernet with 4G/3G/2G backup.
Type 2: one of the signaling paths is PSTN (e.g., PSTN only, cellular with PSTN backup or Ethernet with PSTN
Technical specification
Please refer to chapter 11 "Technical Specifications" for details on the appropriate IRIS-4 terminal.
7.3 Installation, configuration, and commissioning
Monitoring requirements
The ARC should set up the monitoring reporting times (i.e., poll period + poll overdue period) of the site, as
follows:
For Type 1
For Type 2
Requirements for the installation
General installation instructions are in sections 4 "Basic setup" and 5 "Configuring the terminal". The
following additional requirements are for EN54-21:2006 compliance:

The Fire CIE must be able to indicate fire signal acknowledgments and fault conditions as visual indications
driven by the outputs from the terminal, as described below. These indicators must comply with EN54-
21:2006.

The terminal should be powered from an EN54-4 compliant power source, such as a model from the
Elmdene ST range.

The terminal must be mounted in an Access Level 3 protected enclosure compliant with the requirements
of either EN54-2 (Fire detection and fire alarm systems – CIE) or EN54-4 (Fire detection and fire alarm
systems – Power supplies).
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backup).
80 seconds or less.
24 hours or less
IRIS-4 Technical Reference Manual 20/03/2025