Comelit ILS-2 Manual Download Page 4

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1 Introduction

The ILS-2 System is an aspirating detector which uses a network of sampling pipes to channel air to the two high-
sensitivity point detectors housed inside the casing of the main detector. The use of a network of pipes offers a
larger area of protection coverage in comparison to traditional point detectors.
Up to three alarm levels can be configured, depending on the specific application.
A high-efficiency aspirator and a system of flow sensors guarantee correct airflow.
The amount of extracted air can be displayed on a 10-LED bar graph which also indicates the low and high airflow
thresholds.
Parameter configuration can take place entirely using the integrated buttons on the sensor.
ILS-2 is an autonomous device capable of signalling fault and alarm events via a relay with voltage-free contacts.
These contacts may then be connected to a monitoring and signalling control panel.

Important note:

Aspirating Fire Detection Systems installed in the EU since June 2009 must comply with the

Construction Products Regulation Directive (89/106/EEC) and the corresponding European standard EN54-20.
This appliance has been tested and approved to guarantee general compliance with the abovementioned directive
and standards, strict adherence to this Product Guide is required to ensure that the installation meets all aspects
of these requirements.

2 Installing the detector

Note:

this device should be installed by authorised personnel in accordance with local and national regulations.

Remove the transparent cover using the keys provided and loosen the fasteners. Use the template to position
the fixing holes accurately and secure the unit to a surface (wall or ceiling) using the 4 corner fixing points.
Make sure the wall plugs and fixing screws are suited to the installation surface.

3 Terminal block connections

For the system to work properly, it is essential that the enclosure is sealed so that air can only be drawn into the
system from the sampling pipe(s). For this reason, all wiring must pass through the specific cable routes and no
other holes must be made. To run the cable through the relevant inlet, make a small hole (using the tip of a
screwdriver) in the middle of the membrane and push the cable through into the unit. The hole in the membrane
can accommodate cables with a diameter between 4 and 10 mm, thus guaranteeing an airtight seal.
To access the terminal block and connect the cables, it is necessary to remove the display plate housing the
indicators, which is held in place and shut off by the transparent top cover. Take care when removing the board
and make sure that the ribbon cable underneath is not stretched. The ribbon cable must be removed from the
connector on the underside of the board to allow full removal of the board (see figure 2 and 3).

To prevent electric shocks or potential damage caused by fan rotation, cut off the
power supply before removing the cover.

All connections from the site to the main circuit board are made via terminals that can accommodate cables up to
2.5 mm