Comelit ILS-2 User manual

Brand: Comelit

Model: ILS-2

Category: Smoke detectors

Type: User manual

ASPIRATING SMOKE DETECTOR, 1 ZONE, 2

DETECTORS

ILS-2

DISCLAIMER

The content of this document is provided “as seen”. No responsibility is taken and no guarantee (express or

implied) is made in terms of the complete nature, accuracy or reliability of the content of this document. The

manufacturer reserves the right to make changes to the design or the specifications, without any obligation and

without prior notice. Unless otherwise stated, any express or implied guarantee is strictly excluded; this includes,

without restrictions, all implied warranties relating to saleability and fitness for particular purposes.

Conventions used

The following typographic conventions are used in this manual:

Convention

Description

Bold

Used to indicate: emphasis used for menu names, menu options,

toolbar icons

Italic

Used to indicate:

links to other sections

of this manual or other documents, or to indicate the result of

an action.

The following symbols are used in this document:

Convention Description

Caution: this symbol is used to indicate danger to the equipment. The danger

may include loss of data, physical damage or permanent corruption of

configuration parameters.

Danger: this symbol is used to indicate a risk of electric shocks, which

could result in death or permanent injury.

Danger: this symbol is used to indicate a danger of inhaling dangerous

substances, which could result in death or permanent injury.

Summary

1 Introduction ............................................................................................................................................................. 4

2 Installing the detector .............................................................................................................................................. 4

3 Terminal block connections ..................................................................................................................................... 4

3.1 Connection to external devices ......................................................................................................................... 5

4 Installing the piping .................................................................................................................................................. 7

4.1 Piping specifications .......................................................................................................................................... 7

4.2 Fixing ................................................................................................................................................................. 7

4.3 Bends ................................................................................................................................................................. 7

4.4 End caps ............................................................................................................................................................ 8

4.5 Sampling holes .................................................................................................................................................. 8

4.6 Air outlet ........................................................................................................................................................... 8

4.7 Filters ................................................................................................................................................................. 8

4.8 Standard pipe configurations ............................................................................................................................ 9

5 Detectors .................................................................................................................................................................. 9

6.2 User functions ................................................................................................................................................. 11

6.3 Setup notes ..................................................................................................................................................... 14

7 Testing .................................................................................................................................................................... 16

7.1 Point detectors ................................................................................................................................................ 16

7.2 System ............................................................................................................................................................. 16

8 Maintenance .......................................................................................................................................................... 17

9 EN54-20 Sensitivity classes .................................................................................................................................... 18

10 Troubleshooting ................................................................................................................................................... 19

11 Specifications ....................................................................................................................................................... 20

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

3.1 Connection to external devices

Figure 3-1: terminal block for connection to external devices

3.1.1 Connecting the Batteries / Power supply input

Figure 3-2: Ferrite core

ILS-2 must be powered by means of a 24 Vdc power supply unit with EN54-4 approval. The power supply must

be connected using the BATTERY terminals on board the terminal block, observing the correct polarity. The

minimum recommended size is 16 x 0.25 mm (18 AWG), or greater if the power supply unit is further than 5 m

away from the sensor.

A ferrite core is supplied to ensure correct electromagnetic compatibility (EMC). This core must be positioned

inside the unit and the power supply cables wound as shown in figure 3-2. The type of power supply unit required

depends on the speed of the fan used for the application; please refer to Table 11-2: Current Consumption vs Fan

Speed.

3.1.2 ACTION 2, ACTION 1 - Relay output

The voltage-free contacts of the relay ACTION (ACTION) will change status when the pre-alarm level is

exceeded. The Normally Open (NO) and Normally Closed (NC) contacts on the terminal block are available.

3.1.3 FIRE 2, FIRE 1 - Relay output

The voltage-free contacts of the relay FIRE (FIRE ALARM) will change status when the alarm level is

exceeded. The Normally Open (NO) and Normally Closed (NC) contacts on the terminal block are available.

3.1.4 FAULT 2, FAULT 1 - Relay output

In fault conditions, the FAULT relay will change status. The Normally Open (NO) and Normally Closed (NC)

contacts on the terminal block are available.

Note: NO/NC shown in the terminal block refers to the un-powered sensor status. In normal operating

conditions (power supply present) the NO contact is closed, while the NC contact is open.

3.1.5 External Reset

The application of a voltage of +24 Vdc to these terminals triggers a reset of all fault and alarm events

present.

3.1.6 USB Connector

The detector is equipped with a USB type B connector to allow connection to a PC via a US cable (not supplied).

This communication port allows configuration of the sensor, and downloading of logged data using the VSC

software.

The connector is protected by a screw-fit cover and this must be re-fastened after every use, to prevent dust and

dirt from settling on it.

4 Installing the piping

Several standard configurations of the pipe network are illustrated below.

TThe sizing software ASPIRE2 must be used to calculate the channelling time, dilution effects etc. for all the

pipe networks required for individual applications.

Use 25 mm red ABS piping with sampling holes drilled along its length. The piping will terminate with an end

cap, with a hole drilled in its centre. The position of each sampling hole should adhere to guidelines for point

smoke detectors. It is important to note that the concentration of smoke entering a single hole will be diluted

by clean air from other sampling holes and from the end cap hole.

4.1 Piping specifications

In accordance with EN54-20 standards, the pipes must be red ABS and conform to EN 50086-1

(Crushing 1, Impact 1, Temperature 31) with a nominal external diameter of 25 mm. The pipes are

normally supplied in 3-metre lengths and cut as required, but linked using solvent welded sockets or

connected with socket unions (inspectable).

IMPORTANT note: the ILS-2 pipe inlets are tapered so as to allow “push-fit” coupling of the piping coming

from the site. The end of the inlet pipe must be cut cleanly so as to allow airtight

coupling with the tapered inlet. The inlet piping junction with the tapered collector

MUST NOT BE GLUED: doing so will invalidate the sensor warranty.

4.2 Fixing

The standard fixing method for piping requires special clips or clamps. The fixing spacing (distance between two

adjacent clips) is typically 1.5 m.

4.3 Bends

Figure 4-1: 45° bend and 90° bend

The available bends are 90° and 45°. It is important to use 90° swept bends and not “sharp” ones, as sharp

bends introduce high pressure losses and increase the channelling time for the sampling holes downstream of

the bend.

4.4 End caps

Figure 4-2: End cap with central hole

The sampling pipes terminate with a cap which has a hole at the centre. The end cap hole should be considered

as the final sampling hole.

4.5 Sampling holes

The sampling holes are distributed along the piping and are usually drilled once the pipes have been installed,

using a drill bit with a suitable diameter. Drilling can be carried out prior to installation, taking care to space the

holes correctly in the area you wish to protect. Drilling should also be performed in such a way that residual ABS

is not left around the hole. After drilling, remove any ABS residue that has collected inside the pipe. This can be

done by sucking the air out with an external extractor, or by blowing compressed air through, which will push the

debris through to the end of the pipe; in the latter case you will need to fit the end cap afterwards. In standard

applications, the sampling hole faces “downwards”.

4.6 Air outlet

The extracted air, after being analysed, exits via the relevant hole on the enclosure. In some applications, the air

outlet must be moved so that it is a certain distance from the detector; this requires an outlet pipe. This is

necessary when, for example, you wish to reduce the noise level, reduce the risk of outlet obstruction, or the static

pressure of the room in which the air is released must be the same as the room from which the air is extracted,

etc.

The maximum permitted length for this outlet pipe is 10 m, in order to minimise airflow reduction.

The air outlet must be positioned with care, to ensure it is not obstructed accidentally.

4.7 Filters

Figure 4-3: Filters at the inlet of the ILS-2 detector

The sampled air is passed through a filter (code: 02-FL53) before it enters the optical detection

chamber.

4.8 Standard pipe configurations

Figure 4-4: Standard configuration for ILS-2

The double pipe configuration can have a maximum length of 200 m (max. 100 m per incoming pipe), with up to

18 x 3 mm sampling holes and a 6 mm end cap hole for each pipe.

The pipes must be the same length and have the same number of holes.

All configurations with maximum permitted pipe length and/or maximum number of sampling holes should have

the Alarm (FIRE) threshold set to LEVEL 1 (maximum sensitivity) and the fan speed set to 9 (maximum). The

use of bends as described in section 4.3 will have a minimal effect on performance (e.g. response time).

Note: the abovementioned values are based on EN54-20 certification testing. A reduction in pipe length may be

reflected in a lower fan speed, just as fewer holes may be reflected in an increased sensitivity level.

Complex piping configurations must be checked using the ASPIRE2 software.

5 Detectors

Caution:

If the detector/s is/are removed for maintenance purposes, it/they must be fitted in the positions

described above.

Changing the position of the detector(s) may result in false reporting in the event of a fault or

alarm.

USB port Type “B”

6 Setup

6.1 Display functions

ALERT (Alert)

ACTION (Pre-alarm)

LED BAR CHART (Smoke level and Fan speed)

FIRE (Fire alarm)

SMOKE DETECTOR FAULT (detector fault -

1 per detector)

ISOLATE (Disabled=relays not active)

AIRFLOW OK - HIGH AIRFLOW - LOW AIRFLOW

POWER ON (Power supply present)

FAN FAULT (Fan fault)

GENERAL FAULT (General fault)

RESET

MAINS FAILURE (Mains pow. supp. fault)

UNLOCK (Unlocked)

BATTERY LOW (Battery low)

CODE ENTRY (Access code)

DETECTION MODE

6.2 User functions

Figure 6-1: Programming buttons

Press and hold the SELECT and CHANGE buttons simultaneously until you hear the initialisation beep.

Press and release the SELECT button to move through the various configuration steps.

Press and release the CHANGE button to change the current parameter.

The corresponding LED will flash continuously to indicate the active function in that step.

To change the parameters, use access code 510.

Enter the three-digit access code 510. The numbers must be selected one at a time; e.g. press the CHANGE

button six times to illuminate the number 5 LED on the display, then press the SELECT button, etc. (the CODE

LED flashes during this procedure; the Unlock LED will light up on successful entry of the code).

Every time the CHANGE button is pressed, the LED indicator shifts one position to the right.

The following table lists the chronological steps to carry out in order to start the smoke detection aspiration system

correctly.

Bear in mind that:

Pressing the SELECT button scrolls through the various functions and the CHANGE button confirms any changes

made.

Pressing the CHANGE button changes the function values.

The list of available functions is provided in the table below.

Table 6-1: User functions for ILS-2

FUNCTION

DISPLAY

VALUE

NOTES

RECOMMENDE

Reset the unit

The RESET LED

flashes

Press CHANGE to reset the

outputs

Isolate the relay outputs

The ISOLATE LED is lit

steadily

Press CHANGE to Isolate or

when the system is

Reset the outputs

isolated and flashes

when it is running

Adjust the speed

The POWER LED

The greater the assigned value,

of the fan (0 = min., 9 =

max.)

flashes

the shorter the response time

Adjust the sensitivity

The FLOW OK LED

Sensitivity = 9 (flow sensor

of the airflow (v. 6.3.3)

flashes

most sensitive)

Sensitivity = 2 (flow sensor

less sensitive)

Select the value of the

The FLOW HIGH LED

HIGH FLOW threshold

flashes

Select the value of the

The FLOW LOW LED

LOW FLOW threshold

flashes

DOWN

Set the delay in

FLOW HIGH and LOW

LEDs

See table,

paragraph 6.3.3

indication of

flash together

FLOW FAULT

Set ALERT threshold

The ALERT LED flashes

Set threshold for

The ACTION LED

ACTION

flashes

Set FIRE threshold

The FIRE LED flashes

Select the mode of

One of the MODE LEDs

LED 1 ON = use only

detection

flashes

detector 1

LED OR ON = use only one

of the two detectors, the other is

for

backup

LED 1&2 ON = use

both detectors

Buzzer (buzzer)

The buzzer sounds

If the sounds emitted are

intermittently

long, the buzzer is active; if

the sounds are short it is not.

Set Autoreset or

The Laser fault LED

0 = Autoreset

Manual Reset

flashes

1 = Manual Reset

Calibrate flow

The FAN FAULT

Press and hold the CHANGE

button

sensors

LED flashes

for at least 2 seconds

The fan will stop temporarily

and restart

later.

Calibration is complete

when you see the

high and low flow LEDs, and an

LED among them indicating the

value

of the current flow across the

sensors.

If the access code has been entered (unit unlocked), press and hold the SELECT button for longer than

one second to exit “configuration” mode.

Press and release either the SELECT or CHANGE button (when the unit has exited configuration mode -

code not entered) to view the AIRFLOW on the LED bar chart.

The LED bar chart automatically reverts to displaying the smoke level (analogue value reading) after a few

seconds.

6.2.1 Detector mode

ILS-2 has three different operating modes as illustrated below (1 and 2 are internal detectors):

• Mode 1 (1 only): Single detector

The detector displays the analogue smoke reading value in real time and the unit indicates when the

Alert, Action and Fire thresholds are exceeded.

• Mode 2 (1 OR 2): Two installed detectors operating INDEPENDENTLY from one another.

The unit will show the HIGHEST reading obtained from the TWO detectors and will activate the Alert,

Action and Fire relays when ONE OF THE TWO detectors detects smoke values exceeding the relevant

thresholds. This mode allows detection redundancy and therefore guarantees correct operation even if

one of the detectors becomes faulty.

• Mode 3 (1 AND 2): Two detectors work in tandem (Dual Consent)

The unit will show the LOWEST reading obtained from the TWO detectors and will activate the Alert,

Action and Fire relays when BOTH analogue values from the TWO detectors exceed the relevant

thresholds.

Notes: Mode 3 is not permitted in installations which require VdS approval.

ILS-2 is supplied in standard mode 1. If required jointly, the second detector will be supplied in Mode 2. If the

unit only houses one detector and mode 3 is programmed, a Detector Fault will be signalled.

6.3 Setup notes

The Fan Speed, Airflow Limits and Flow Sensitivity must be configured BEFORE unit calibration and

testing.

The following guidelines should assist in the commissioning of the system.

6.3.1 Fan Speed

The Fan Speed should be set as high as possible to achieve the fastest transport time from the sampling holes

to the sensor, which is especially important for longer pipe lengths that must conform to the requirements of

EN54-20 (please refer to Section 4.8: Standard pipe configurations).

However, a balance also needs to be achieved between unit performance and power

consumption. Table 11-1 provides the values necessary for this evaluation.

6.3.2 Airflow Fault signalling delays

When the airflow limits are exceeded, a Flow Fault indication will appear after a programmable time period.

The default Flow Fault indication delay time is approximately 30 seconds. Once the airflow reverts to a normal level,

the Flow Fault will be cleared within 18 seconds.

Table 6-2 lists the available values for this parameter.

In environments where the airflow may be affected by sudden temperature or pressure

changes, it may be necessary to increase the delay time accordingly.

Table 6-2: Flow Fault delay times

Bar chart

Flow Fault ind.

Flow Fault status

LED

delay (seconds)

exit delay (seconds)

120

150

180

210

240

270

Notes: Timings are approximate.

6.3.3 Flow Sensitivity

This setting determines the sensitivity of the unit in detecting blocked sampling holes or broken pipes.

The default flow sensitivity value of 9, which corresponds to a change in volumetric airflow of ± 20% from the

calibrated reading for at least the duration of the flow fault indication delay, see section 6.3.2 above.

For most installations, especially if compliance with EN54-20 is required,

the default setting should be used.

In certain circumstances, such as rapid changes in ambient air pressure due to the activation of air handling

units, doors opening/closing etc. the default setting may appear to be too sensitive.

Under these conditions, the flow fault indication delay setting should be increased to allow time for the air

pressure to stabilise after the temporary event.

Decreasing the flow fault indication times is only necessary under extreme operating conditions.

7 Testing

Note: the system checks should only be carried out by authorised personnel. Before undertaking any testing,

make sure that the proper authorities have been informed and that signals to the monitoring and signalling

control panel have been disabled, in order to prevent unwanted alarms.

7.1 Point detectors

With the unit powered up and plastic top cover removed, detector operation can be tested using a low

concentration smoke source or aerosol spray.

The point detectors can also be checked using a permanent magnet positioned at 7 o’clock on the sensor

cover.

This test electronically simulates the effect of smoke in the optical chamber.

7.2 System

Before checking the system as a whole, make sure the top cover of the unit is in place.

As a minimum requirement, a small amount of smoke should be introduced to the last sampling hole on each pipe

(or branch).

The choice of smoke source is dependant on the installation but in all cases the

smoke must be present for the duration of the test – aerosol sprays do NOT work on aspirated systems.

If the sampling holes are accessible then a basic check can be carried out with smoke matches or lighted tapers,

etc.; however, to carry out a test in which performance can be measured, please refer to Appendix A of the Code

of Practice for Aspirating Systems published by the F.I.A.

8 Maintenance

With normal use, the filter element will eventually become contaminated with dust particles contained in the

extracted air. It is recommended that the filter element (code 02-FL53) is replaced and detectors cleaned

every 6 months (more frequently for dirty environments).

Note: maintenance should be performed by authorised personnel. Before carrying out any maintenance, notify

the proper authorities and isolate (disable) the unit to prevent incorrect alarm statuses from being

triggered on the monitoring and signalling control panel.

Please follow the steps illustrated when performing a maintenance check on the system:

1. Remove the transparent cover using the special tool provided.

2. Disconnect the unit from the power supply.

3. Lift out the filter element from the inlet pipe (long-nosed pliers are recommended for this

operation).

4. Fit the new filter element, ensuring that it is not compressed during fitting. Fit it inside the pipe so that the

top surface of the filter is positioned flush with the pipe.

5. Remove the point detector(s) from the mounting base by twisting them anti-clockwise.

6. Remove the detector cover by prying away the 4 side tabs with a small-bladed flathead screwdriver.

7. Carefully vacuum the inside of the point detector. If further cleaning is required continue with Step 8,

otherwise skip to Step 12.

8. Remove the mesh insect screen and the optical chamber by pulling them out.

9. Clean the chamber again by vacuuming or blowing out dust and dirt particles.

10. Replace the optical chamber cover, aligning the arrows on the top with the arrow on the printed circuit board.

11. To replace the mesh insect screen, place it on the grooves over the optical chamber, turning it until it snaps

into place.

12. Replace the plastic cover using the status LED holes to align the cover.

13. Reinstall the detector onto its mounting base, ensuring that it is in the SAME POSITION (address 1 fitted

to detector 1 position).

14. Refit the transparent plastic cover, restore the power supply and carry out the Flow Calibration procedure.

15. Restore the relays’ enabled status.

9 EN54-20 Sensitivity classes

The detectors used in ILS-2 have been independently tested and approved for use in EN54-20 certified

Class A, B or C installations.

The following information will show the requirements for compliance with the abovementioned standard.

Table 9-1: Sensitivity and maximum number of holes vs Class EN54-20

Lev. Sensitivity

Maximum number of holes in each Class EN54

Maximum length of

piping (m)

Class C

Class B

Class A

100

N/A

100

N/A

100

5 or higher

N/A

Note: table 9-1 shows the limit that should not be exceeded for the 3 sensitivity classes. Figures are based on

the configurations shown in section 4.8: Standard pipe configurations.

The maximum number of holes is based on the following standard configurations:

• Class A: 3 x 4 mm holes including the end cap hole.

• Class B: 6 x 4 mm holes including the end cap hole.

• Class C: 17 x 3 mm holes plus 1 x 6 mm end cap hole.

Note: any changes to the standard configuration should be verified using the ASPIRE2 modelling software.

10 Troubleshooting

PROBLEM

POSSIBLE SOLUTION

Power supply LED flashes

Make sure the power supply voltage is between 18 - 30 Vdc.

No LEDs lit on display and

fan NOT working

Make sure the 24 Vdc power supply is present and that the +/- polarities have been

observed. Make sure the fuse has been positioned correctly and that it has not

blown.

No LEDs lit on display and

fan WORKING

Make sure the ribbon cable is fully connected to the main circuit board and the

display.

Flow HI or LOW LED lit

Make sure the inlet pipes have been installed correctly, the cover is fitted properly

and the enclosure is fully sealed. Make sure the airflow calibration procedure has

been carried out (see section 6.2). Make sure the filter is in good condition (see

section 8).

Flow reading LED lit

Flow values on the LED bar

chart change erratically

Decrease the flow sensitivity and re-calibrate the unit (see section 6.2)

Flow reading LED lit No

extreme pipe breakage or

complete obstruction

conditions are detected

Increase the flow sensitivity and re-calibrate the unit (see section 6.2)

Detector Fault indication

Make sure the detector address is correct (see section 5)

Make sure the detector is fully seated in its base.

Make sure the correct mode has been selected (see section 6.2.1)

Make sure the detector optics are clean.

11 Specifications

Table 11

1: General Specifications, ILS

Number of detectors

1 or 2, laser point technology

Filter

Single-stage

Airflow sensors

Thermal devices - High and Low thresholds. 10-LED bar chart

Power supply voltage

18 - 30 VDC (24 VDC rated)

Relay contacts

1 A @ 30 Vdc

Unit current consumption

350 mA at 24 VDC without sampling pipes. See table below for typical

consumption values according to fan speed.

Maximum length of pipes

100 m

Protection rating

IP65 with air outlet piping installed (IP23 without)

Operating temperature range

From -10 to 50ºC

Operating humidity

From 10 to 95% RH (non-condensing)

Certifications

EN54-20 by VdS (G206066)

EN61000-6-3:2001(+A11:2004) (EMC)

EC Certifications

EN60950-1:2006 (Safety)

CPD (89/106/EEC)

Table 11-2: Current consumption vs Fan Speed

LED bar chart value

Fan speed

Current (mA)

110

120

130

150

170

190

220

235

265

300

Notes: the above values were recorded using an installation with a 10 m length of piping (external

diameter 25 mm). The unit was powered at 24 VDC.

Page is loading ...

Comelit ILS-2 User manual

Brand: Comelit

Model: ILS-2

Category: Smoke detectors

Type: User manual

Download PDF

report

Comelit ILS-2 User manual

Comelit ILS-2 User manual

Related papers

Other documents