Autronica AutroSense Nano System manual

116-P-ASENSENANO/DGB, 2010-08-09
Installation Handbook
AutroSense Nano
Aspirating Smoke Detector

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be reproduced in any form, by any
method, for any purpose.
Autronica Fire and Security AS and its
subsidaries assume no responsibility for
any errors that may appear in the
publication, or for damages arising from
the information in it. No information in this
publication should be regarded as a
warranty made by Autronica Fire and
Security AS. The information in this
publication may be updated without
notice.
Product names mentioned in this
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Table of Contents
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 1
Table of Contents
1. Introduction.......................................................................3
2. Outside the Detector ........................................................4
3. Inside the Detector ...........................................................6
4. Installation: Mechanical ...................................................8
5. Installation: Drilling Template..........................................9
6. Installation: Electrical.......................................................10
7. Installation: Pipework.......................................................12
8. Configuration ....................................................................13
9. Commissioning.................................................................15
10.Maintenance......................................................................16
11.Troubleshooting................................................................18
12.Optional: Communications Card.....................................19
13.Technical Data ..................................................................21
14.Reader’s Comments.........................................................23

Table of Contents
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 2
0832
Autronica Fire and Security
Haakon VII’s gt. 4
N-7483 Trondheim
Norway
10
0832-CPD-1473
EN 54-20:2006
Aspirating smoke detectors
for fire detection and fire alarm
systems for buildings
Class A, B and C

Introduction
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 3
1. Introduction
This aspirating smoke detector is designed to provide reliable
performance in a variety of environment and to ensure that
installation and commissioning are as simple as possible. An
aspirating smoke detector uses a fan to draw samples of air
from a network of pipes with sampling holes positioned as if they
were point smoke detectors.
The detector incorporates a patented artificial intelligence
system which allows the detector to adjust itself to the optimum
sensitivity for any environment.
The artificial intelligence system also monitors the detector
chamber and air filter, and automatically compensates for
contamination. This provides a stable response and signals a
fault if the contamination reaches a level that cannot be
compensated for.
_______________________________________________________
This smoke detector is Class III as defined in EN60950. It is
designed to operate from Safety Extra Low Voltages and does
not generate any hazardous voltages.
_______________________________________________________
If this detector is to form part of an approved fire detection
system, its power must be supplied from a certified power
supply (typically EN 54-4).
_______________________________________________________
In order for the installation to conform to EN 54-20, pipes must
conform at least to EN 61386-1 Class 1131.
_______________________________________________________
Please note that printed circuit boards are static
sensitive and must not be handled without taking
proper static precautions.
The detector is a Class 1 laser
product as defined in IEC 60825-
1. This unit incorporates a Class
3B embedded laser which must not be removed from the
detector, as retinal damage may occur if the beam enters the
eye.
_______________________________________________________
Every care has been taken to ensure that the detector is as
easy to install as possible by trained fire alarm engineers. In case
of difficulty, please contact the Help Line in the first instance to
ensure trouble free installation and operation.
The manufacturer takes no responsibility for damage or injury
occasioned as a result of failing to install or operate or maintain
the equipment in accordance with these instructions and other
good practices.

Outside the Detector
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 4
2. Outside the Detector
1. Front Cover Securing Screw: leave sufficient clearance
below the detector to allow screwdriver access to this
screw.
2. Fire Alarm: illuminates to indicate that the smoke level
has passed the detector’s Fire 1 threshold, and the
normally open FIRE relay contacts have closed.
3. Pre-Alarm: illuminates to indicate that the smoke level
has passed the detector’s Pre-Alarm threshold, and the
normally open PRE-ALARM relay contacts have closed.
4. Fault: illuminates to indicate a fault condition and that
the normally closed FAULT relay contacts have opened.
Three additional LEDs indicate the type of fault:
a) Flow: illuminates to indicate an airflow fault. This
may be due to blocked or broken pipes,
although it can also occur if, for example, factory
warehouse doors are opened on a windy day, or
if industrial air conditioning turns on. Another
possible cause is that the aspirating fan
connection cable is damaged or disconnected.
32
4
a
c
1
b
5

Outside the Detector
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 5
b) Filter: illuminates to indicate that the detector’s
air filter needs to be changed.
c) Head: illuminates to indicate a problem with the
detector laser chamber, as might be caused by
the laser head connecting cable is damaged or
disconnected. It can also be caused by certain
kinds of internal systems faults, which appear in
the detector’s event log as “process errors”.
NB: if the FAULT LED is illuminated but none of the
additional LEDs are lit, it indicates a problem with the
power supply if its fault output is connected to the
detector’s INPUT terminals.
5. OK: illuminates to confirm normal operation.
NB: during initial setup, the OK LED will flash for 15
minutes while the detector learns its operating
environment. This does not indicate a problem with the
detector.

Inside the Detector
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 6
3. Inside the Detector
1. Aspirating Fan Connector Lead: If this lead is
broken or not connected, the fan will not turn
and the detector will indicate a FLOW fault.
2. Main PCB: No user-serviceable parts. NB: The PCB
is fixed in place with 5 off M3 x 6 screws. The
detector must not be operated with any of the
screws missing, as this may cause air leaks and
unreliable operation.
3. DIP switch: used to configure user-selectable
detector functions
4. Detector Head Ribbon Connector: If this lead is
broken or not connected, the detector will
indicate a HEAD fault.
2
1
4
5
6
7
3

Inside the Detector
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 7
5. Detector Head Cover Plate. This protects the laser
head. The plate should not be removed from the
detector.
6. Detector Head Assembly: No user-serviceable
parts. Do not remove this from the detector due
to the risk of exposure to the laser.
7. Replaceable Dust Filter: This simply slides in and
out of its mounting. The filter and its replacement
have IN written in red on one side, and OUT on
the other to allow correct orientation. The part
number for ordering spare dust filters is 116-5861-
018.9028.NB: as viewed above, IN should be on
the left and OUT should be on the right, as
indicated by the moulded-in arrows next to the
filter slot.

Installation: Mechanical
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 8
4. Installation: Mechanical
Fixing Holes (3 x M5 x 13 slots)
Refertoprintabledrillingtemplateonnext
pageforaccuratepositioning
N
B: Ensure the detector is fixed to a flat surface –
otherwise the enclosure will twist.
Cable Entries
 2x 20mm Conduit Holes, e.g for
20mm packing glands.
 Drilling guides are provided for
drilling two additional 2x 20mm holes
in the top and 1x 20mm hole in the
bottom if needed.
Pipe Entries
 ¾” ABS Pipe.
 Use a 3/3”male to 25mm female
adaptor (AirSense part no. 116-5861-
018.9032) if 25mm pipe is used.
NB: Do not glue pipes into detector to facilitate
future removal.

Installation: Drilling Template
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 9
5. Installation: Drilling Template
Lower clearance
 Remember to leave sufficient
gap underneath the detector
to allow screwdriver access to
the cover fixing screw and any
cable gland fixed to the
bottom of the detector .
 The screw is M6 x 15 panhead
Pozidrive.
Upper clearance
 Remember to leave sufficient
clearance above the detector
for the cable glands and pipe
inlet stubs.
3 x wall fixing screw holes
 Use M5 pan-head screws suitable
for the wall to which the detector
is to be fixed.
NB: The positions of the cross-hairs on this
drawing act as an accurate drill template
only if the page is printed at DIN A4 paper
s
ize with Print Scaling disabled. This is
normally part of the main Print menu, and
is usually enabled by default.

Installation: Electrical
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 10
+24V
EARTH
0V
FIRE
NC NO COM
PRE-ALARM
NC NO COM
FAULT
NC NO COM INPUT A B SCREEN
-IN -OUT +IN +OUT
6. Installation: Electrical
In accordance with good wiring practice, keep cables and individual
bared conductors as short as possible while allowing stress-relieving
cable forming. Power cables should be screened and current-rated at
1A or greater. Signal cable should be 120Ωscreened twisted pair,
such as Belden 9841 24AWG.
Volt-free relay contacts rated at 1A maximum
at 24VDC.
NB: All relay diagrams are shown in their contact states with
the detector powered up and operating normally.
Contactswillchangeoveronfireorfault,as
appropriate.
TheNO/NC(normallyopen/closed)terminallegends
forthisrelayrefertothecontactstateinthe
power‐off/faultcondition,nottothe“normal
operation”condition.Faultrelaycontactswillalso
changeoveronpower‐down.
Usescreenedcablewithscreenconnectedtothe
detectorEARTHterminal.
Power Supply connections
Connectto24VDC1APSU.
Donotconnect0VtoEARTH.
Usescreenedcablewithscreenconnectedtothe
detectorEARTHterminal.
DIPSwitch7OFF:connecttoPSUfaultrelayNormally
ClosedcontactsforPSUmonitoring.*
DIPSwitch7ON:ClassiFire®Overridewillreduce
detectorsensitivityby50%whiletheinput
terminalsareshortedtogether,e.g.byakeyswitch.
Usescreenedcablewithscreenconnectedto
detectorEARTHterminal.
Optional communications card fitted (RS485 serial communications mode):
ConnectCommandModuleordetectorRS485(SenseNET)serialbustoAandB.
Setcommunicationscardaddressswitchestoidentifydetector.
Usescreenedcable.ConnectscreentoSCREENterminal(s).Earththescreenatoneend
ONLY(ifusingachainofdetectorsconnectedtoaCommandModule,earththecable
screenattheCommandModuleonly).
Optional APIC card fitted (addressable communications mode):
Connect+and–INand+and‐OUTterminalstofirepanelwithacommunications
protocolcompatiblewiththeAPIC.SetAPICaddressswitchestoidentifydetector.
InachainofdetectorslinkedtoaCommandModule,useaserialcommunicationscardin
eachStratos‐Nanodetector,eachsettoanindividualaddress,andcommunicatewith
thefirepanelviaasingleAPICintheCommandModule
UsescreenedcablewithscreenconnectedtothedetectorEARTHterminal.

Installation: Electrical
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 11
*The INPUT terminals are set by default to monitor the power
supply. If power supply monitoring and ClassiFire Override are
not required, fit a wire link across the two terminals to prevent a
fault condition on power-up.

Installation: Pipework
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 12
7. Installation: Pipework
Exhaust pipe
¾”pipeor25mmpipewitha¾”sleeve
adapter.
Iftheprotectedareaisatalower
atmosphericpressurethanthelocationin
whichthedetectorisinstalled(e.g.a
closedair‐conditionedroom),fitareturn
piperunfromthedetectorexhausttothe
protectedarea,inordertoequalisethe
pressure.Thiswillimprovedetector
response.
Eveniftheprotectedareaanddetectorare
atthesameatmosphericpressure,itis
goodpracticetofitapipestubwitha
bendtotheexhaust,topreventdebris
fallingintothedetector.
Donotgluethepipeintotheexhaustoutlet.
Sampling pipe
¾”pipeor25mmpipewitha¾”sleeve
adapter.
Themaximumsamplingpipelengthis50m.
Fitanendcapwithanappropriately‐sized
holetooptimizeairflowthroughthepipe.
Thisendcapholeisalsoasamplinghole.
UsethePipeCAD®pipelayoutmodeling
softwaretoplanpipeinstallations.ForEN
54‐20compliance,indicatedhole
sensitivitiesshouldbebetterthan,or
equalto:0.80%obs/m(ClassA),1.66%
obs/m(ClassB)or5.85%obs/m(ClassC)
Donotgluethepipeintothesamplinginlet.

Configuration
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 13
8. Configuration
Configuration is carried out via the DIL switch mounted on the
Main PCB.
Switch 1 Switch 2 Switch 3 Switch 4 Switch 5 Switch 6 Switch 7 Switch 8
Set Detector
Sensitivity
Alarm Factor 6 Off Off
Alarm Factor 7 On Off
Alarm Factor 8 Off On
Alarm Factor 9 On On
ClassiFire On Off
Fixed Alarms On
Flow Limit Offset
±40 Off Off
±20 On Off
±5 Off On
±3 On On
Flow Delay
240sec Off
30sec On
Input Select
PSU Fault Off
ClassiFire
Override On
Auto Calibration
Enable Off
Disable On
NB: Denotes EN 54-20 test configuration (factory default)
settings
Alarm Factor: the detector calculates sensitivity relative to the
ambient pollution level. Higher Alarm Factors provide reduced
sensitivity (the alarm threshold is maintained further away from
the ambient level). Refer to the remote software manual for
further details. NB: Changing the Alarm Factor starts a new
FastLearn cycle: during the initial 15 minute learning period, the
detector is incapable of reporting an alarm, and will take 24
hours to
achieve optimum performance, based on the ambient
conditions.
ClassiFire®On: allows the artificial intelligence system to
continuously adjust alarm thresholds in order to avoid unwanted
alarms from environmental changes (recommended). NB:
Disabling this feature means that nuisance alarms due to
fluctuations in ambient pollution levels become more likely.
Fixed Alarms: switches the artificial intelligence system off,
locking sensitivity to that set at initial setup. This de-activates the
dust filter monitoring system (not recommended). NB: Enabling
this feature means that nuisance alarms due to fluctuations in
ambient pollution levels become more likely.
Flow Limit Offset: sets the sensitivity of the airflow monitoring
system. A small offset makes the system very sensitive to air flow
changes. EN 54 systems must react to ±20% changes in airflow,
which equates to a change in flow sensor reading of +5. Areas
with fluctuating air pressures may require a less sensitive setting.

Configuration
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 14
NB: Changing the flow limit offset starts a new flow calibration
set up.
Flow Delay: sets the time for which a flow fault must continue
before a fault is signalled.
Input Select: the detector input terminal may be used to either
monitor an associated power supply for faults, or for ClassiFire®
Override (reduces normal sensitivity by 50%). NB: in the factory
default condition, the switch is set to OFF (power supply
monitoring). This will give a fault condition if there is an open
circuit on the INPUT terminals, so fit a wire link if power supply
monitoring is not required. If a wire link is fitted across the INPUT
terminals, it is important that this switch be set to OFF, since
otherwise the detector sensitivity will be dramatically and
permanently reduced by the ClassiFire Override function.
Auto Calibration: automatically starts a new FastLearn cycle
when the detector is powered up. This may be disabled if the
previous settings need to be retained.

Commissioning
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 15
9. Commissioning
Local standards and specification requirements must be
adhered to. A typical commissioning procedure might entail the
following steps:
Check installation against design
documentation
Set detector configuration DIL
switches as required
Power up detector and wait for 15
minute FastLearn cycle to finish
(steady OK LED when complete)
Disconnect detector from fire panel if
required
Check/test connections to main Fire
Detection and Alarm System
Smoke test: check maximum
transport time is less than 120s, verify
sampling hole sensitivities as
required. Verify that smoke is not
prevented from reaching sampling
holes, e.g. by strong air currents such
as might be caused by air-
conditioning units
Reconnect detector to fire panel if
required
Complete test records, settings and
results for reference by maintenance
engineers

Maintenance
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 16
10. Maintenance
Local standards and specification requirements must be
adhered to. A typical maintenance procedure could entail the
following steps:
Check detector, wiring and pipework
for damage
Check original design is still valid,
e.g. changes due to building upgrades
Check detector for contamination and
clean if necessary
Check maintenance logs for issues
and rectify as appropriate
Check transport times against original
records: significant increases or
decreases in transport times may
imply damaged pipes or sampling
holes that need clearing
Smoke test to check detector
operation and Fire relay connection
Simulate a fault to check the Fault
relay and connection
Complete and file maintenance
records
Isolate detector from fire panel if
required
Reconnect detector to fire panel if
required

Maintenance
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 17
Notes:
 It is prudent to disconnect or isolate the detector from the fire panel
during maintenance to prevent unintentional alarm activations.
 The detector should be powered down during internal cleaning
(use an air duster can or dry air gun).

Troubleshooting
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 18
11. Troubleshooting
Nuisance alarms:
 This normally indicates that the detector is set at an Alarm Factor
inappropriate to the installed environment.
Increase the Alarm Factor to reduce sensitivity.
 The sensor chamber may be contaminated.
Return the sensor chamber for factory cleaning and
recalibration.
Detector will not pass smoke a test:
 Detector may be in a FastLearn cycle.
Check green OK LED is not flashing.
 The detector FastLearn cycle may have been carried out during
or immediately after smoke tests.
Reinitiate FastLearn with the detector in a clean
environment.
 The Alarm Factor is too high.
Change the Alarm Factor to a lower, more sensitive,
setting.
Nuisance flow faults:
 Flow monitoring is too sensitive for the environment.
Increase the flow limit offset.
 Airflow may be subject to temporary changes (spikes).
Increase flow delay.
Long transport times:
 Sampling pipe may be too long or have too many sampling
holes/capillaries or incorrect hole sizes.
Check design with pipe modelling software.
 Sampling pipes, sampling holes and/or the exhaust pipe may be
partially blocked by dust or debris.
Clean pipe work with dry compressed air and/or clean
the sampling holes.
 Fan may be defective.
Send detector for repair.
 Fan lead may be disconnected
Reconnect lead.