Edwards LaserSense HSSD-2 Installer's Handbook

LaserSense HSSD-2

A

spirating Smoke Detector

Installers Handbook

P/N 9-14565 (EN) • REV 02 • ISS 11ABR13

Copyright © 2013 UTC Fire and Security. All rights reserved.

Manufacture

r

Kidde Products Limited

Unit 2, Blair Way, Dawdon
Seaham, County Durham
SR7 7PP
United Kingdom

Certification

0832.

0832-CPD-1076 (Standard detector)
0832-CPD-1077 (Command module detector)
0832-CPD-1078 (Minimum display detector)

EN 54-20: 2006

Aspirating smoke detectors for fire detection and fire alarm systems
for buildings.

Class A, B, and C

Technical data: See INF48022 and INF48023 held by the
manufacturer.

Contact information

For contact information, see www.airsensetechnology.com.

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook i

Content

Important information iii
EN 54-20 compliance v

Chapter 1 Product and component descriptions 1

Introduction 2
Available software for the detector

2
Specifications 3
Standard detector 4
Stand-alone command module or command module detector 6
Standard detector interior view 7
Stand-alone command module interior view 8
Command module detector interior view 9
Detector controls and indicators 10
Display types 11

Chapter 2 Installation and assembly 13

Introduction 14
Antistatic precautions 15
General installation guidelines 15
System design 17
Mechanical installation 19
Electrical installation 22
Power supply connections 28
Demonstration mode 29
Interfacing with fire alarm panels 30
Connecting a command module to an addressable fire

panel 33
Connecting a single detector to an addressable fire panel 35
Connecting to a PC 35

Chapter 3 Programming the unit 37

Introduction 38
Entering programming mode 39
Main menu 40
Navigating through the menus 40
Detector programmable functions 42

Chapter 4 Commissioning 57

Introduction 58
Commissioning 58
Precommissioning preparation 59
Acclimation period 59
Transport time verification 60
Gross smoke testing 60

ii LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Chapter 5 Troubleshooting 63

Troubleshooting the detector 64
Error messages 66

Chapter 6 Maintenance 67

Introduction 68
Scheduled maintenance 68
Maintenance procedures 69

Appendix A External communications 73

Glossary 77
Index 79

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook iii

Important information

Regulatory information

This equipment is Class III as defined in EN 60950 (i.e., this equipment is
designed to operate from Safety Extra Low Voltages and does not generate any
hazardous voltages).

As this equipment is part of a fire detection system, input power should be
supplied from an approved power supply conforming to EN 54-4 or UL/ULC and
FM standards.

In order for the installation to conform to EN 54-20, pipes must conform at least
to EN 61386-1 Class 1131.

This product has been designed to meet the following requirements:

• NFPA 72 National Fire Alarm and Signaling Code

• UL 268 Smoke Detectors for Fire Alarm Signaling Systems

• UL 268A Smoke Detectors for Duct Applications

• UL 864 Control Units for Fire Protective Signaling Systems

• CAN/ULC-S524 Installation of Fire Alarm Systems

• ULC-S527 Control Units for Fire Alarm Systems

• CAN/ULC-S529 Smoke Detectors for Fire Alarm Systems

System reacceptance test after reprogramming (UL/ULC and FM): To ensure

proper system operation, this system must be retested in accordance with
NFPA 72 after any programming change. Reacceptance testing is also required
after any addition or deletion of system components, and after any modification,
repair, or adjustment to system hardware or wiring.

Limitation of liability

To the maximum extent permitted by applicable law, in no event will UTCFS be
liable for any lost profits or business opportunities, loss of use, business
interruption, loss of data, or any other indirect, special, incidental, or
consequential damages under any theory of liability, whether based in contract,
tort, negligence, product liability, or otherwise. Because some jurisdictions do not
allow the exclusion or limitation of liability for consequential or incidental
damages the preceding limitation may not apply to you. In any event the total
liability of UTCFS shall not exceed the purchase price of the product. The
foregoing limitation will apply to the maximum extent permitted by applicable law,
regardless of whether UTCFS has been advised of the possibility of such
damages and regardless of whether any remedy fails of its essential purpose.

Installation in accordance with this manual, applicable codes, and the instructions
of the authority having jurisdiction is mandatory.

While every precaution has been taken during the preparation of this manual to
ensure the accuracy of its contents, UTCFS assumes no responsibility for errors
or omissions.

iv LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Advisory messages

Advisory messages alert you to conditions or practices that can cause unwanted
results. The advisory messages used in this document are shown and described
below.

WARNING: Warning messages advise you of hazards that could result in injury

or loss of life. They tell you which actions to take or to avoid in order to prevent
the injury or loss of life.

Caution: Caution messages advise you of possible equipment damage. They tell

you which actions to take or to avoid in order to prevent the damage.

Note: Note messages advise you of the possible loss of time or effort. They

describe how to avoid the loss. Notes are also used to point out important
information that you should read.

Product Symbols

This symbol appears on the main board of the unit and indicates that the
board contains static sensitive components.

This label is located on the laser chamber at the bottom right of the open
detector and signifies that the unit is a Class 1 Laser product as specified
in IEC 60825-1. The unit incorporates a Class 3B embedded laser which
must not be removed from the detector, as retinal damage may result if
the laser beam enters the eye.

This symbol indicates the Safety ground studs. These are for grounding
cable screens, etc., and should not be connected to 0V or signal earth.

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook v

EN 54-20 compliance

The installation must be designed using PipeCAD software, which is provided
free on the CD shipped with each detector. After designing the installation
including pipes, endcaps, and sampling holes, enter the detector type. To select
the detector type, select Options, select Calculation options, and then select the
detector from the Type drop-down list.

Select Options > Calculate, or click on the calculator icon. The software will
prompt you to choose from Use set hole sizes, Best flow balance, or Max.
permissible transit time. Select the appropriate option, and then click OK. The
results for each pipe (View > Results) show calculations for each sampling hole
on the pipe with the nearest to the detector at the top of the screen, and the
endcap hole at the bottom.

For EN 54-20 compliance the transport time of the last sampling hole shall be
checked following all installation and proven to be less than or equal to that
determined by PipeCAD.

The classification of each sampling device configuration and associated
sensitivity settings are determined by the column headed Hole sensitivity %
obs/m which shows the predicted sensitivity for each hole. For the installation to
comply with EN 54-20 depending on the class of installation, each sampling hole
must be no less sensitive than the following:

Class A: 0.62% obs/m

Class B: 1.95% obs/m

Class C: 4.65% obs/m

The calculation can be further refined by leaving a working detector in the
protected area for at least 24hrs at the intended alarm factor for the installation
(this could be done before or after installation). The detector sensitivity can be
read from the “Sensitivity” figure on the histogram screen of the Remote software
supplied with each detector. Click Options > Calculation options to open the
Hole calculation options dialog box. Enter the sensitivity value obtained from the
practical test, and then click OK. The new calculated value will use the real
sensitivity from the practical test.

The PipeCAD software will determine the classification of any used configuration.
Commissioning and periodic system tests must involve smoke tests to verify that
the system performs as expected and enters Fire (Alarm) 1 alarm within the time
determined by PipeCAD from the farthest hole. The detector sensitivity must also
be inspected to ensure it has not radically fallen from the installed figure. If it has
changed for any reason, the new figure must be re-entered into PipeCAD and the
recalculated hole sensitivities must be confirmed to be within the class limits
shown above.

vi LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

The settings of a compliant system should be recorded, as it is possible by
changing certain programmable functions to make the system non-compliant. If
functions are changed, it is recommended that the system is retested if
continuing compliance is in any doubt.

Note: For EN 54-20 compliant installations the detector requires that the flow

thresholds be set manually to ± 6% of the nominal value, after the FastLearn
phase is completed. For example, if the flow rate is 64% after the completion of
the FastLearn period, the user must manually set the low flow threshold to 58%
and the high flow threshold to 70%.

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 1

Chapter 1

Product and component
descriptions

Summary

This chapter provides descriptions of the detector features, specifications, and
controls and indicators.

Content

Introduction 2
Available software for the detector

2
Specifications 3
Standard detector 4
Stand-alone command module or command module detector 6
Standard detector interior view 7
Stand-alone command module interior view 8
Command module detector interior view 9
Detector controls and indicators 10
Display types 11

Chapter 1: Product and component descriptions

2 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Introduction

The detector is a highly sophisticated “next generation” high sensitivity aspirating
smoke detection product that provides all the benefits of air sampling high
sensitivity smoke detection, including very early warning. Designed for easy
installation and commissioning, the detector incorporates a patented “artificial
intelligence” known as ClassiFire, which allows the detector to configure itself to
optimum sensitivity, alarm thresholds, and minimum nuisance alarms for various
environments.

The detector operates by drawing air from a protected space via a supervised
piping network in relatively small areas. The sampled air is passed through a
dust separator (filter) to remove dust and dirt before entering the laser detection
chamber. State-of-the-art electronics are used to analyse the sampled air and
generate a signal representing the level of smoke present.

ClassiFire intelligence also monitors the detector chamber and dust separator
for contamination, continually adjusting the appropriate operating parameters to
counteract the negative effects of any contamination. Aspirating smoke detectors
are unique in being able to provide a consistent level of protection in a very wide
range of environments by continuously making minor adjustments to sensitivity.

The aspirating line of detectors detects “difficult-to-detect” slow growth electrical
overload incipient fires in “difficult” environments.

Available software for the detector

The Remote Control and the SenseNET software packages are available for use
with the detector:

• Remote Control software: Provided free of charge with every detector, this

software package enables the user to set up and configure the programmable
functions of one or more detectors or Command Module from a computer
connected via an RS-232 serial cable.

• SenseNET software: SenseNET software is used to configure and manage a

large network of detectors with a simple, streamlined graphical user interface
from a computer connected to a detector or Command Module via an RS-232
serial cable to RS-485 converter interface.

Chapter 1: Product and component descriptions

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 3

Specifications

Caution: This equipment is only to be used in accordance with this specification.

Failure to operate the equipment as specified may cause damage to the unit,
injury, or property damage.

Specification Value

SELV rating (EN 60950) Class III

Supply voltage 21.6 to 26.4 VDC

PSU Type: conforming to EN 54-4. Electrical safety
complies with IEC 61010-1

Size 427 × 372 × 95 mm (16.8 × 14.6 × 3.7 in.)

Weight
Detector
Command module detector
Stand-alone command module
Stand-alone command module and
batteries

5.2 kg (11.5 lb.)

5.3 kg (11.6 lb.)

6.2 kg (13.6 lb.)

10.1 kg (22.3 lb.)

Operating temperature range −10 to +60ºC (EN 54-20)

32 to 100°F (0 to 38°C) (UL 268, CAN/ULC-S529,
FM)

Operating humidity range 0 to 90% noncondensing

IEC 61010-1 Pollution degree 1
IEC 61010-1 Installation Cat. II

Sensitivity range
(%obs/m)
(%obs/ft.)

Min. = 25%, Max. = 0.03% FSD
Min. = 7.62%, Max. = 0.00914% FSD

Maximum sensitivity resolution 0.0015% obs/m (0.00046% obs/ft.)

Detection principle Laser light scattering mass detection

Particle sensitivity range 0.0003 to 10 microns

Current consumption
Detector

Stand-alone command module

Command module detector

300 mA (fan speed 1)
470 mA (fan speed 8)
750 mA (fan speed 16)

450 mA

750 mA (fan speed 1)
920 mA (fan speed 8)

1.5 A (fan speed 16)

Relay contact rating 500 mA at 30 VDC

Maximum sampling pipe length 200 m (656 ft. total)

Sampling pipe inlets 4

Maximum number of sampling holes 25 per pipe (100 total)

Sampling pipe internal diameter 3/4 in. (ID) or 27 mm (OD)

Alarm levels 4 (Fire (Alarm) 2, Fire (Alarm) 1, Pre-Alarm and Aux)

Chapter 1: Product and component descriptions

4 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Specification Value

Bar graph sensitivity range 0.0015 to 25% obs/m (0.00046 to 7.62 obs/ft.)

Bar graph segments 26

Chamber service intervals Greater than 8 years (depending on environment)

Dust separator (filter) replacement
intervals

Greater than 5 years (depending on environment)

Laser lifetime (MTTF) Greater than 1000 years

Programming Front panel or PC via RS-232/RS-485

Data bus cable RS-485 data cable

Data bus length 1,200 m (4,000 ft.)

IP rating IP50

Standard detector

The standard detector may be operated as a stand-alone unit, or may be part of
a network of detectors centrally monitored by a command module. It may be
programmed via its front panel, as in the standard detector and command
module versions, shown in Figure 2 on page 5 and Figure 3 on page 6.

Alternatively, the standard detector can be ordered without a front panel display
(minimum display) as shown in Figure 1 on page 5. The detectors may be
programmed remotely via the detector’s RS-485 terminals using a command
module, or via the detector’s RS-232 port using a PC running the Remote Control
software. A copy of this software is supplied with each detector.

The standard detector without a front panel display is housed in a rugged sheet
metal steel enclosure. This detector includes LEDs to indicate alarms, faults, and
normal operating conditions. The standard detector with display (and command
module) can also be ordered with the steel enclosure.

Chapter 1: Product and component descriptions

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 5

Figure 1: Minimum display detector

(2)

(3)

(4)

(1)

(5)

(6)

(1) Cable glands
(2)

Exhaust port
(3) Sampling ports
(4) Alarm LED: Illuminates when the alarm

level has been reached and the

appropriate time delays have expired.

(5) Fault LED: Illuminates when the unit has

a fault and a fault signal is being sent to
the fire alarm panel.

(6) OK LED: Illuminates to show normal

operation when there are no faults. The
OK lamp will flash during the 15-minute
FastLearn period when the detector is
first learning about its environment.

Figure

2

: Standard detector

(2) (3)

(4)

(1)

(1) Cable glands
(2)

Exhaust port

(3)

Sampling ports

(4)

Front panel display

Chapter 1: Product and component descriptions

6 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Stand-alone command module or command
module detector

When multiple detectors are networked together, a command module may be
used to tie all the detectors together and to provide a centralized point for
network access and programming, running diagnostics, and PC and fire panel
connection.

The command module can be mounted either inside a detector or as a stand­alone unit in its own housing without an aspirator or smoke detection circuitry. If
detectors attached to the Command Module are mounted in different fire zones
then the Command Module must be mounted in its own housing with separate
power supply to comply with BS5839 and EN 54.

When a command module is mounted inside a detector, the Standard detector
display is replaced with a dedicated command module display. The programming
buttons and display on the front of the detector belong to the command module.

Programming at the command module is very similar to programming a detector,
the main difference being that the command module has extra functions to
control all the aspirating detectors connected in the network.

Figure 3: Command module detector

(4)

(2)

(3)

(1)

(1) Cable glands
(2)

Exhaust port

(3)

Sampling ports

(4)

Front panel display

Chapter 1: Product and component descriptions

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 7

Standard detector interior view

Figure 4: Standard detector interior view

(10)

(5)

(7)

(3)

(8)

(4)

(9)

(6)

(2)

(1)

(1)

RS-232

serial

port

(2)

Safety earth studs
(3)

1 A 5 x 20mm T-type protection fuse
(4) Dust separator (filter) removal handle
(5) Detector address DIP switch

(6)

Front panel display connectors

(7)

Display attachment screws

(8)

24 VDC power supply connections

(9)

RS-485 terminal connections

(10)

Terminal block connections

Chapter 1: Product and component descriptions

8 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Stand-alone command module interior view

Figure 5: Stand-alone command module interior view

(1) (2) (3) (4)

(5)

(6)

(7)

(1)

RS-232

serial

port

(2)

Safety earth studs
(3) 24 VDC power supply connections
(4)

500 mA 5 x 20mm T-type protection fuse

(5) Front panel display connectors

(6) Display attachment screws
(7) Terminal block connections

Chapter 1: Product and component descriptions

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 9

Command module detector interior view

Figure 6: Command module detector interior view

(1)

(2)

(3)(4)(5)

(6)

(7)

(8)

(9)

(10)

(11)

(1)

RS-232

serial

port

(2)

Safety earth studs
(3) Dust separator (filter removal handle
(4)

Detector display connection
(5) Detector address DIP switches
(6) Command module display connection
(7) Display attachment screws

(8) Command module CPU board

(9) Command module CPU board -

terminal block connections
(10) Detector CPU board
(11) Detector CPU board - terminal block

connections

Chapter 1: Product and component descriptions

10 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Detector controls and indicators

The standard detector and the command module detector controls and indicators
are very similar.

Figure 7: Standard detector

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

Figure

8

: Command module detector

(1) The <TEST> Button starts a lamp test which makes the detector show its nominal operating

sensitivity as calculated by the ClassiFire Artificial Intelligence System.

(2) The <RESET> Button clears any latched alarms or faults and sets the status display back to

its normal operation display. To comply with national standards, detectors are supplied with
the RESET function disabled as the default.

(3) MENU Buttons are used when programming the unit, which is password-protected. See

“Navigating through the menus” on page 46, for more information. Pressing the UP or
DOWN arrow keys when not in Programming Mode (the access code has not been entered)
scrolls through the detector’s event log. Refer to “Event log” on page 61 for more information

(4) The OK Indicator illuminates to show normal operation when there are no faults. On the

command module, this means that the command module and all detectors on the loop are
operating normally.

(5) The Fault Indicator illuminates when the unit has a fault and a fault signal is being sent to

the fire alarm panel. On the command module, this also indicates a fault in a detector on the
communications loop, or in the loop itself.

Chapter 1: Product and component descriptions

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 11

(6) The <ISOL> Button toggles the unit‘s isolation state. When isolated, the unit cannot

generate any alarms and will signal a fault condition and the text display will show Panel
Isolate. A detector is shipped with its <ISOL> Button disabled as default. These three
buttons can be individually enabled or disabled. The factory default state of the detector is:
<TEST> button enabled and <RESET> and <ISOL> buttons disabled.

(7) Status Display (if fitted) shows all events as they happen in real time and is also used to

configure the unit.

(8) Smoke Density Indicators (scaled smoke levels) display absolutely scaled smoke levels

above 1% obscuration per metre (0.30% obscuration per foot) to a maximum of 25% obs/m
(7.62% per foot). The Alarm 2 activation level is programmed normally somewhere in this
range. The bar graph display will show a continually cycling pattern when the unit is in
FastLearn mode. On the command module display, this will occur when any unit on the
RS-485 communications loop is in FastLearn. Otherwise, the bar graph display on the
command module mimics the bar graph display on the highest-reading detector on the loop.

(9) Aux. Alarm, Pre-Alarm, Alarm (Fire), and Alarm (Fire) 2 indicators illuminate when the set

alarm level has been reached and the set time delays have expired. On a command module,
the indicators signify an alarm condition from any detector on the communications loop.

(10) Smoke Density Indicators (1 through 10) are the relatively scaled ClassiFire bar graph and

changes in steps of half a segment.

Display types

The standard detector display is a two-line LCD which allows basic programming
of the detector. See Figure 9.

Figure 9: Standard detector display

The command module display contains more information than the standard
detector display. The command module display instructs the user with graphic
symbols. See Figure 10.

Figure 10: Command module display

Chapter 1: Product and component descriptions

12 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 13

Chapter 2

Installation and assembly

Summary

This chapter provides information necessary to install and configure the detector
system.

Content

Introduction 14
Antistatic precautions 15
General installation guidelines 15
System design 17

Pipework 18

Mechanical installation 19

Removing and replacing the front cover 21

Electrical installation 22

Detector terminal block connections 23
Command module terminal block connections 25

Connecting power cables 26
Power supply connections 28
Demonstration mode 29
Interfacing with fire alarm panels 30

Setting the detector address 30

Connecting a detector network to a command module 30

Fault-tolerant detector loop configuration 32

Nonfault-tolerant serial configuration 32
Connecting a command module to an addressable fire panel 33
Connecting a single detector to an addressable fire panel 35
Connecting to a PC 35

Chapter 2: Installation and assembly

14 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Introduction

This chapter provides information necessary to install the detector system.

To install the detector:

1. Unpack the shipping carton. Ensure that the package contains a CD-ROM,
two ferrite rings, two keys, two cable glands, and the unit.

2. Determine the optimum location for the detector.

3. Do not open any unused sampling pipe inlets. Remove the inlet caps from

sampling pipe inlets to be used. Refer to the PipeCAD System Design and
Installation User Manual for complete instructions on how to design and install

an air sampling pipe network.

4. Remove the knockouts for field wiring and battery connections.

5. Mount the wall-mounting bracket.

6. Mount the detector to the mounting bracket.

7. Connect the detector to the sampling pipe network.

8. Connect field wiring to the detector.

9. Power up and program the detector.

Installation should only be done by factory-trained technicians.

Installation should be in accordance with applicable installation requirements.

These include:

• NFPA-70, National Electrical Code

• NFPA-72, National Fire Alarm and Signaling Code

• CSA C22.1 Canadian Electrical Code, Part 1

• CAN/ULC-S524 Installation of Fire Alarm Systems

• Any other local, national, or installation requirements or standards.

WARNING: Electrocution hazard. All connections should be made with the

power turned off.

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 15

Antistatic precautions

This system contains static-sensitive components. Always ground yourself with a
proper wrist strap before handling any circuits.

Caution: When handling any electric components or printed circuit boards,

antistatic precautions must be followed. Failure to do so may result in component
damage.

Static discharge can be reduced by adhering to the following guidelines:

• Always use conductive or antistatic containers for transportation and storage,
if returning any item.

• Wear a wrist strap while handling devices and ensure that a good ground is
maintained throughout the installation process.

• Never subject a static sensitive device to sliding movement over an
ungrounded surface and avoid any direct contact with the pins or
connections.

• Avoid placing sensitive devices onto plastic or vinyl surfaces.

• Minimise the handling of sensitive devices and Printed Circuit Boards (PCBs).

General installation guidelines

The following is a brief set of guidelines on installing detectors:

• It is recommended that system design and installation is carried out by
suitably experienced and trained personnel.

• The detector should normally be mounted at a level where there is easy
access to the unit for configuration and programming.

• Unused sampling pipe inlets must be left closed.

• The exhaust air from the unit must not be impeded in any way. If the unit is
mounted in a different air pressure from where the air is being sampled (for
example an air duct), then a pipe must be routed from the exhaust port back
to the same air pressure zone as the sampling holes.

• All signal cables must be screened and must be of a suitable type. The
specific type of cable will normally depend on the local fire regulations.

• The unit must not be placed in areas where either the temperature or humidity
is outside the specified operating range.

Chapter 2: Installation and assembly

16 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

• The unit should not be placed in close proximity to any equipment expected to
generate high Radio Frequency levels (such as radio alarms) or units
generating high levels of electrical energy (such as large electric motors or
generators).

• Ensure that when the detector is fitted to the wall there is enough space on
the right-hand side to allow removal and replacement of the filter element.

Table 1 contains a list of procedural guidelines for installation of the detector.

Table 1: Procedural guidelines

Do Don’t

• Ensure that the ClassiFire alarm factor is
appropriately set.

• Ensure that the power and signal cables
are correctly connected before powering
up by use of cable identifiers or electrical
continuity checks. Incorrect connection
could damage the detector.

• Ensure that cable of an appropriate
approved type is used for interconnection.

• Place sampling points so that the detector
will be able to detect smoke at the earliest
opportunity.

• Ensure that the detector exhaust is in an
area with the same atmospheric pressure
as the sample pipes, either by placing the
detector physically in the protected area
or by leading a pipe from the detector
exhaust to the protected area.

• Ensure that the environment of the
protected area is within the environmental
operating parameters of the detector.

• Close unused pipe inlet ports on the
detector to ensure optimal operation.

• Set the appropriate ClassiFire alarm
factor for the area to be detected.

• Set the detector Address Switches
correctly when used in a network.

• Drop the detector.

• Install detectors in damp or exposed
areas.

• Remove or connect boards when the
detector is powered up.

• Connect internal 0 volt terminals to local
earth.

• Attempt to re-use dust filter cartridges
once removed.

• Attempt to adjust or alter detector settings
other than via the user-programmable
functions. Any attempts to adjust the laser
potentiometer are detectable and will void
the warranty on the product.

• Place the detector near high power RF
sources.

• Place the detector so close to other
equipment that there is insufficient room to
access and change the dust separator.

• Use sampling pipe of less than 1 inch
(27 mm) outside diameter without a
suitable 1-inch (27-mm) pipe adapter. It is
important that there are no leaks where
the pipe connects to the detector.

• Use excessive force when fitting sampling
pipes as this may damage the detector.

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 17

System design

Aspirating system design is inherently simple. It is often possible to achieve good
system performance with very simple installations. There are however a few
rules which must be adhered to, and these rules are equally applicable to all
aspirating systems which operate on similar principles to this detector. The
information contained in this handbook is intended as an overview only.

Do not expect one detector to achieve good performance if sampling from areas
of different air pressure (typically: under floor air plenums and room spaces or
different rooms in air-conditioned areas). This is because the air pressure
differences may cause reverse or poor airflow along the sampling pipes. If it is
not possible to locate the detector within the protected area it may be necessary
to lead an exhaust pipe from the detector exhaust port returning air to the
protected area. See Figure 11 on page 18.

Always locate the sampling points in a position to which smoke may reasonably
be expected to travel. This may sound obvious, but, for example, do not expect
ceiling mounted sampling points to operate satisfactorily if air flow prevents the
cool smoke from an incipient fire from reaching ceiling level. In this instance it is
usually better to locate the sampling pipes directly in the airflow (for example in
an air conditioning unit air intake). There is no substitute for carrying out smoke
tests prior to installation of pipes to indicate suitable sampling point location.

Note: PipeCAD pipe modeling software must be used when designing a pipe

network and verifying its performance. Refer to the PipeCAD System Design and
Installation User Manual or complete instructions on how to design and install an

air sampling pipe network.

Chapter 2: Installation and assembly

18 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Figure 11: Locating the detector outside the protected area

(1) Sampling pipe
(2) Sampling hole
(3) Detector

(4) Exhaust pipe

(5) False ceiling

Pipework

Sampling pipes should be made from a non-hazardous material and should be
clearly identified. The ideal internal diameter of sampling pipes is 22mm. Other
sizes will often work but will provide different response times.

Ideally, if the total length of sampling pipe is greater than 50 metres, then multiple
pipes should be used. When using multiple sampling pipes, care should be taken
to achieve a reasonable degree of balance (say within 10% of airflow) to ensure
even suction from the pipes.

Maximum recommended total sampling pipe length is 200 metres. This is 4
lengths of 50 metres, or 2 lengths of 100 metres.

In order for the installation to conform to EN 54-20, pipes must conform at least
to EN 61386-1 Class 1131.

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 19

Sampling pipes must have capped ends. The end cap should be drilled with a
sampling hole normally between 4 or 5 mm (0.16 or 0.20 in.) diameter and free
from burrs. Sampling holes should normally be 3 to 4 mm (0.12 or 0.16 in.)
diameter or as calculated by PipeCAD and free from burrs. Each pipe run should
not have more than 25 holes.

Pipe transit time must not exceed 120 seconds and an approved type of pipe
must be used for installations. When drilling holes in the sample pipes, or cutting
off lengths of pipe, ensure that all swarf and debris is removed from the pipe.
This guide holds true for average sampling pipe lengths, but if using long pipes
(typically more than 60 metres (197 ft.) total), performance may be improved by
making the sampling holes near the ends slightly larger than those nearer the
detector.

Use of PipeCAD software

PipeCAD pipe modeling software must be used when designing a pipe network

and verifying its performance. Refer to the PipeCAD System Design and
Installation User Manual for complete instructions on how to design and install an

air sampling pipe network.

Mechanical installation

Before installing the detector the local standards for installation of aspirating
detection systems must be consulted as these standards differ throughout the
world. Specific advice for one country may not be applicable to another.

The detector body is fitted to a wall-mounting bracket which is attached to the
wall via three mounting holes E as shown in Figure 12 on page 20. The detector
is then fitted over the mounting stud D and secured inside the detector body with
the nut provided for the purpose.

For a more discreet layout, it is possible to allow the sampling pipes and cables
to enter the detector from the rear, with the sample pipes and connection cables
channeled into the wall. Figure 11 on page 18 depicts the detector with cables
channeled into the wall and the sampling pipes not channeled into the wall.) In
order to achieve this, sampling holes A and B need to be opened up to a
diameter of. 30 mm (1.25 in) to take the sampling pipes A and the exhaust pipe
B. The holes C need to be opened up to 25 mm (1.0 in.) diameter in order to take
a suitable threaded metal cable gland to provide adequate RF screening for the
connection cables. These modifications are shown in dotted lines in Figure 12.

The wall will also need to be suitably prepared to allow the mounting plate to sit
flush against the wall. The sampling and exhaust pipes must also extend out of
the wall sufficiently to tightly engage in the pipe entry points on the rear of the
detector (as shown in Figure 12). If the detector does not fit flush with the
mounting bracket, the pipe excess should be trimmed back in small increments
until the correct fit is achieved.

Chapter 2: Installation and assembly

20 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Figure 12: Detector installation options

(2)

(1)

(1) Exhaust pipe
(2) Sampling pipes

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 21

Removing and replacing the front cover

To remove the front cover, unlock it using the key provided (turn counter­clockwise). The bottom of the front cover may then be lifted away from the
detector chassis until the top of the cover disengages from the retaining rails at
the top of the chassis. The cover may then be removed.

If greater internal access is required, e.g., for software upgrades, it may be
necessary to remove the front panel display. To do this, use an anti-static wrist
strap to prevent possible static damage to the unit’s electronics and proceed as
follows.

To remove the display:

1. Power down the unit.

2. Unfasten the four counter-sunk crosshead screws holding the display to the
display mounting brackets.

3. Lift the display away from the main board.

Note: It is not necessary to remove the remaining four screws.

If the display needs to be completely removed, unplug the display ribbon
connectors from the detector or command module main board, taking note of the
position of the connectors which are as follows:

• For the standard detector, a single ribbon cable connected to the detector’s
front panel display connector.

• For the command module Detector, a twin ribbon cable, one ribbon
connected to the detector’s front panel” display connector and marked
“DISPLAY DET,” and one connected to the command module board’s
Commander Display connector and marked “COMMAND CM.”

• For the Stand-Alone command module, a twin ribbon cable, one ribbon
connected to the detector display connector and marked “COMMAND DET,”
and one connected to the Commander Display connector and marked
“COMMAND CM.”

When the display needs to be completely removed, disengage the ribbon
connectors from the main detector or command module board and NOT from the
display board.

Refitting of the display is the reverse of the above. Ensure that the connectors
are refitted as described above. To refit the front cover, hook the recessed lip at
the top of the front cover behind the two retaining guard rails at the top of the
chassis as shown in Figure 13 on page 22.

Chapter 2: Installation and assembly

22 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Figure 13: Hooking the recessed lip at the top of the front cover

(1) Guard rails

Electrical installation

All electrical (power and signal) connections should be made to the green power
terminal block inside the detector. Power cables should have sufficient current­carrying capacity. Refer to “Specifications” on page 3 for current consumption.
Signal cable should be 120 volt shielded (screened) twisted pair such as Belden
9841 24 AWG. Power and signal cables should enter the detector via metal cable
glands.

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 23

Detector terminal block connections

Figure 14 below shows the terminal block connections for a Standard detector.

Figure 14: Detector terminal block connections

Item Name Description

(1) BUSH 2 Addressable bus 2 high o/p [2]

(2) BUSL 2 Addressable bus 2 low o/p [2]

(3) BUSH 1 Addressable bus 1 high o/p [2]

(4) BUSL 1 Addressable bus 1 low o/p [2]

(5) SPARE Spare

(6) SPARE Spare

(7) SPARE Spare

(8) FIRE 2 N/O Fire 2 contacts

(9) FIRE 1 N/O Fire 1 contacts

(10) PRE N/O Pre-Alarm contacts

Chapter 2: Installation and assembly

24 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Item Name Description

(11) AUX N/O Aux contacts

(12) FAULT N/C Fault contacts

(13) SPARE Spare

(14) RS-485 2A RS-485 bus 2 data line A

(15) RS-485 2B RS-485 bus 2 data line B

(16) SCREEN 2 RS-485 bus 2 screen

(17) SCREEN 1 RS-485 bus 1 screen

(18) RS-485 1B RS-485 bus 1 data line B

(19) RS-485 1A RS-485 bus 1 data line A

(20) SPARE Spare

(21) FAULT N/C Fault contacts

(22) AUX N/O Aux contacts

(23) PRE N/O Pre-Alarm contacts

(24) FIRE 1 N/O Fire 1 contacts

(25) FIRE 2 N/O Fire 2 contacts

(26) SPARE Spare

(27) INPUT 3 Remote input 3. Short pair to activate [1]

(28) INPUT 2 Remote input 2. Short pair to activate [1]

(29) INPUT 1 Remote input 1. Short pair to activate [1]

N/O = Normally Open

N/C = Normally Closed

[1] These connections can be used as the input terminals for main supply and battery fault
sensing. When this is the case, the contacts will signal a fault when the contacts are open rather
than closed, as fault relays operate in the opposite sense to other relays, i.e., they are open for
normal operation. The factory default setting is for supply monitoring on “I/P 1.” If Input 1 is not
being used for power supply monitoring, make sure that the Battery check function in the Remote
Control software is not checked (off) for EN 54-20 compliance. The Battery check function is
located in the Function settings menu, Power monitoring tab.

[2] These connections are used to connect a detector to an addressable Fire Panel when a
suitable Addressable Protocol Interface card is mounted to the “Addressable Interface” connector
on the left-hand edge of the detector main PCB. (Refer to “Interfacing with fire alarm panels” on
page 30 for more information on APIC cards.)

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 25

Command module terminal block connections

All electrical (power and signal) connections should be made to the green
terminal block inside the detector. Power cables should be shielded (screened)
and of sufficient current-carrying capacity. Signal cable should be 120 volt
screened twisted pair such as Belden 9841 24AWG. Power and signal cables
should enter the detector via metal cable glands.

Figure 15 below shows the terminal block connections for the command module.

Figure 15: Command module terminal block connections

Item Name Description

(1) BUS H2 Addressable bus 2 high o/p [2]

(2) BUS L2 Addressable bus 2 low o/p [2]

(3) BUS H1 Addressable bus 1 high o/p [2]

(4) BUS L1 Addressable bus 1 low o/p [2]

(5) SCRN RS-485 bus 1 screen

(6) RS-485 2A RS-485 bus 2 data line A

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26 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Item Name Description

(7) RS-485 2B RS-485 bus 2 data line B

(8) SCRN RS-485 bus 2 screen

(9) RS-485 1A RS-485 bus 1 data line A

(10) RS-485 1B RS-485 bus 1 data line B

(11) FIRE2 N/O Fire 2 contacts

(12) FIRE1 N/O Fire 1 contacts

(13) PRE N/O Pre-Alarm contacts

(14) AUX N/O Aux contacts

(15) FAULT N/C Fault contacts

(16) FAULT N/C Fault contacts

(17) AUX N/O Aux contacts

(18) PRE N/O Pre-Alarm contacts

(19) FIRE 1 N/O Fire 1 contacts

(20) FIRE 2 N/O Fire 2 contacts

(21) I/P1 Remote input 1, Short pair to activate [1]

(22) I/P1 Remote input 1, Short pair to activate [1]

(23) I/P2 Remote input 2, Short pair to activate [1]

(24) I/P2 Remote input 2, Short pair to activate [1]

(25) SPARE Spare connection

(26) RS-232 Tx RS-232-2 transmit line

(27) RS-232 Rx RS-232-2 receive line

(28) GND RS-232-2 earth

N/O = Normally Open N/C = Normally Closed

[1] These connections can be used as the input terminals for main supply and battery fault
sensing. When this is the case, the contacts will signal a fault when the contacts are open rather
than closed, as fault relays operate in the opposite sense to other relays, i.e., they are open for
normal operation. The factory default setting is for supply monitoring on “I/P 1.”

[2] These connections are used to connect a command module to an addressable Fire Panel
when a suitable Addressable Protocol Interface card is mounted to the “Addressable Interface”
connector on the left hand edge of the command module main PCB. (Refer to “Interfacing with
fire alarm panels” on page 30 for more information on APIC cards.)

Connecting power cables

The following precautions should be taken only for those applications where the
system is required to meet EMC compliance requirements:

• Screened power cable should be used.

• The earth wire of power cables should be connected to the detector EARTH
terminal and this, in turn, connected to a ground stud on the detector chassis.

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 27

• All cables (power and signal) should pass through the screw-in metal cable
glands provided. The screen of the power cable should be terminated at the
cable gland.

• Power cables need to be fitted with a ferrite ring inside the detector case (two
are provided). The 24V and 0V wires should be long enough to form a loop
around the ferrite wall.

• Separate wires from the power cables should be kept as short as possible,
just enough to provide adequate stress relief.

Figure 16 and Figure 17 show the proper arrangement of top and rear entry
power cables.

Figure 16: Top power cable arrangement

(1) Cable screen
(2) Cable gland

(3) Ferrite

(4) Earth stud

Chapter 2: Installation and assembly

28 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Figure 17: Rear power cable arrangement

(1) Cable gland
(2) Ferrite

(3) Earth stud

Power supply connections

The detector may be powered by any EN 54-4 or UL/ULC and FM compliant
monitored 24 VDC power supply of sufficient capacity. (See Figure 18.)

Figure 18: Detector power supply connections

(1) 0 volt (−24 VDC)
(2) Safety earth
(3) +24 VDC

(4) 0 volt (−24 VDC)

(5) Safety earth
(6) +24 VDC

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 29

Figure 19: Command module power supply connections

(1) 0 volt
(2) Safety earth
(3) +24 VDC

Note: The safety earth connection must be separate and not connected to the

GND (ØV) connection.

Demonstration mode

In normal use, the detector remains in a reduced sensitivity mode for 24 hours
while it gathers information about its environment. For purposes of
demonstration, for example, to verify a new installation, this may be disabled by
putting the detector into “Demonstration Mode.” This special operating mode
bypasses the 24-hour learning process and allows the detector to operate at a
high sensitivity after only 15 minutes learn time.

To enter demonstration mode, the detector must be in FastLearn mode. While
FastLearn is running, hold down the front panel <RESET> button and while
holding this, simultaneously press the <TEST> and <ISOL> buttons. The
<RESET> and <ISOL> buttons do not need to be enabled for this function.

When entering demonstration mode, the detector front panel LCD display will
show the legend “Demo mode” and the time and date on which this was invoked.

Note: Demonstration mode should only be used for demonstrations. It should not

be used as a substitute for normal operation, as the alarm settings in this mode
are based solely on the sparse data gained during the 15 minute FastLearn
period. Over time, this would lead to nuisance alarms due to normal variation in
the detector’s environment. To cancel demonstration mode, invoke a new
FastLearn.

Chapter 2: Installation and assembly

30 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Interfacing with fire alarm panels

Because of the flexible nature of the detector and the many possible
configurations, there are many options for interfacing the detectors to the fire
panel. These include many third party interfaces available from various
manufacturers. Because of this, it is not possible to give a complete list of
interfacing methods but the following pages will give details of the most common
methods that are likely to be used.

Setting the detector address

In order to identify itself to the command module or fire panel, each detector
needs to have a unique address ranging from 1 to 127. The detector address is
simply set on the red DIP switch SW1 located at the lower left of the opened
detector on the bottom of the main circuit board. The switch settings are up for 1
and down for 0, and the detector address is set as a 7-bit binary code (switch 8
equates to a value of 128 and so is outside the usable address range).

Figure 20 shows an example where the address equates to “01100011” in binary,
or:

(1 x 1) + (1 x 2) + (0 x 4) + (0 x 8) + (0x 16) + (1 x 32) + (1 x 64) + (0 x 128) = 99

Figure 20: Sample DIP switch settings

The full range of available addresses and their relevant switch settings are
provided in Table 2 for reference.

Note: Addresses chosen for detectors do not have to be consecutive or in a

given order as long as they are all different.

Table 2: Address table

Address

1 2 3 4 5 6 7 8 65 1 0 0 0 0 0 1 0

1 1 0 0 0 0 0 0 0 66 0 1 0 0 0 0 1 0
2 0 1 0 0 0 0 0 0 67 1 1 0 0 0 0 1 0
3 1 1 0 0 0 0 0 0 68 0 0 1 0 0 0 1 0
4 0 0 1 0 0 0 0 0 69 1 0 1 0 0 0 1 0
5 1 0 1 0 0 0 0 0 70 0 1 1 0 0 0 1 0
6 0 1 1 0 0 0 0 0 71 1 1 1 0 0 0 1 0
7 1 1 1 0 0 0 0 0 72 0 0 0 1 0 0 1 0
8 0 0 0 1 0 0 0 0 73 1 0 0 1 0 0 1 0
9 1 0 0 1 0 0 0 0 74 0 1 0 1 0 0 1 0
10 0 1 0 1 0 0 0 0 75 1 1 0 1 0 0 1 0
11 1 1 0 1 0 0 0 0 76 0 0 1 1 0 0 1 0
12 0 0 1 1 0 0 0 0 77 1 0 1 1 0 0 1 0

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LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 31

13 1 0 1 1 0 0 0 0 78 0 1 1 1 0 0 1 0
14 0 1 1 1 0 0 0 0 79 1 1 1 1 0 0 1 0
15 1 1 1 1 0 0 0 0 80 0 0 0 0 1 0 1 0
16 0 0 0 0 1 0 0 0 81 1 0 0 0 1 0 1 0
17 1 0 0 0 1 0 0 0 82 0 1 0 0 1 0 1 0
18 0 1 0 0 1 0 0 0 83 1 1 0 0 1 0 1 0
19 1 1 0 0 1 0 0 0 84 0 0 1 0 1 0 1 0
20 0 0 1 0 1 0 0 0 85 1 0 1 0 1 0 1 0
21 1 0 1 0 1 0 0 0 86 0 1 1 0 1 0 1 0
22 0 1 1 0 1 0 0 0 87 1 1 1 0 1 0 1 0
23 1 1 1 0 1 0 0 0 88 0 0 0 1 1 0 1 0
24 0 0 0 1 1 0 0 0 89 1 0 0 1 1 0 1 0
25 1 0 0 1 1 0 0 0 90 0 1 0 1 1 0 1 0
26 0 1 0 1 1 0 0 0 91 1 1 0 1 1 0 1 0
27 1 1 0 1 1 0 0 0 92 0 0 1 1 1 0 1 0
28 0 0 1 1 1 0 0 0 93 1 0 1 1 1 0 1 0
29 1 0 1 1 1 0 0 0 94 0 1 1 1 1 0 1 0
30 0 1 1 1 1 0 0 0 95 1 1 1 1 1 0 1 0
31 1 1 1 1 1 0 0 0 96 0 0 0 0 0 1 1 0
32 0 0 0 0 0 1 0 0 97 1 0 0 0 0 1 1 0
33 1 0 0 0 0 1 0 0 98 0 1 0 0 0 1 1 0
34 0 1 0 0 0 1 0 0 99 1 1 0 0 0 1 1 0
35 1 1 0 0 0 1 0 0 100 0 0 1 0 0 1 1 0
36 0 0 1 0 0 1 0 0 101 1 0 1 0 0 1 1 0
37 1 0 1 0 0 1 0 0 102 0 1 1 0 0 1 1 0
38 0 1 1 0 0 1 0 0 103 1 1 1 0 0 1 1 0
39 1 1 1 0 0 1 0 0 104 0 0 0 1 0 1 1 0
40 0 0 0 1 0 1 0 0 105 1 0 0 1 0 1 1 0
41 1 0 0 1 0 1 0 0 106 0 1 0 1 0 1 1 0
42 0 1 0 1 0 1 0 0 107 1 1 0 1 0 1 1 0
43 1 1 0 1 0 1 0 0 108 0 0 1 1 0 1 1 0
44 0 0 1 1 0 1 0 0 109 1 0 1 1 0 1 1 0
45 1 0 1 1 0 1 0 0 110 0 1 1 1 0 1 1 0
46 0 1 1 1 0 1 0 0 111 1 1 1 1 0 1 1 0
47 1 1 1 1 0 1 0 0 112 0 0 0 0 1 1 1 0
48 0 0 0 0 1 1 0 0 113 1 0 0 0 1 1 1 0
49 1 0 0 0 1 1 0 0 114 0 1 0 0 1 1 1 0
50 0 1 0 0 1 1 0 0 115 1 1 0 0 1 1 1 0
51 1 1 0 0 1 1 0 0 116 0 0 1 0 1 1 1 0
52 0 0 1 0 1 1 0 0 117 1 0 1 0 1 1 1 0
53 1 0 1 0 1 1 0 0 118 0 1 1 0 1 1 1 0
54 0 1 1 0 1 1 0 0 119 1 1 1 0 1 1 1 0
55 1 1 1 0 1 1 0 0 120 0 0 0 1 1 1 1 0
56 0 0 0 1 1 1 0 0 121 1 0 0 1 1 1 1 0
57 1 0 0 1 1 1 0 0 122 0 1 0 1 1 1 1 0
58 0 1 0 1 1 1 0 0 123 1 1 0 1 1 1 1 0
59 1 1 0 1 1 1 0 0 124 0 0 1 1 1 1 1 0
60 0 0 1 1 1 1 0 0 125 1 0 1 1 1 1 1 0
61 1 0 1 1 1 1 0 0 126 0 1 1 1 1 1 1 0
62 0 1 1 1 1 1 0 0 127 1 1 1 1 1 1 1 0
63 1 1 1 1 1 1 0 0
64 0 0 0 0 0 0 1 0

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32 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Connecting a detector network to a command module

120 ohm screened twisted pair such as Belden 9841 24 AWG should be used for
all loop connections. The RS-485 A and B wires should be taken through a ferrite
(supplied) with a single loop (see Figure 16). The total length of interconnecting
cable between adjacent detectors in the loop should not exceed 1.2 kilometres.

The detectors are connected using the RS-485 connections on the terminal block
(see figure 14 and 15) RS-485 1A and 1B are the signal connections for bus 1
and RS-485 2A and 2B are the signal connections for bus 2. SCREEN 1 and 2
are the screen connections for buses 1 and 2 respectively.

For the Command Module, the RS-485 1A and 1B connections may be thought
of as the “Send” lines, and 2A and 2B the “Return” lines. For each detector on
the loop, the 1A and 1B connections may be thought of as the lines from the
previous detector on the loop and the 2A and 2B connections the lines to the
next detector in the loop.

Fault-tolerant detector loop configuration

Figure 21 shows the configuration for a fault-tolerant network.

Figure 21: Fault tolerant detector loop configuration

(1) Command module
(2) Detector 1
(3) Detector 2
(4) Detector 127

Nonfault-tolerant serial configuration

It should be pointed out that loop connections such as in “Fault-tolerant detector
loop configuration” above are only needed for a fully fault-tolerant network where
full isolation is required between detectors. If all detectors are operating within
the same zone, a series connection can be used where the output from the
command module is taken from the Bus 2 terminals and the last detector in the
loop does not require to be connected back to the command module as shown

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 33

below. In this example, the command module will not be able to monitor the
network for communications problems, but less wiring is required.

Figure 22: Non-fault tolerant serial configuration

(1) Command module
(2) Detector 1
(3) Detector 2
(4) Detector 127

Connecting a command module to an
addressable fire panel

When a command module is being used to manage one or more detectors (the
maximum limit is 127) an Addressable Protocol Interface Card (APIC) is required
to decode detector status information in the command module and convey to the
Fire Panel via the Addressable Bus 1 and Bus 2 terminal block connections (see
“Command module terminal block connections” on page 25 for details). In this
configuration only one interface is required and all detector information is
available through this interface, one address per device.

APICs plug into a connector on the main PCB via a ribbon cable. Once plugged
in, the addressable signaling line circuit (SLC) in and out are connected to the
main PCB addressable bus terminals and the address DIP switches are set to
the SLC address. Refer to the APIC installation sheet for details.

Note: Some addressable protocols may limit the maximum number of device

addresses to less than 127. Some protocols may not support all of the available
alarm levels, and fault reporting is usually a general fault with no detailed fault
information.

Chapter 2: Installation and assembly

34 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Figure 23: Addressable fire panel configuration

(6)(5)

(4)

(3)

(1)

(8)(7)

(2)

(1) Addressable fire panel
(2) Addressable loop
(3) APIC mounted inside the command module detector (Start address: 1, End address: 127*)
(4) Command module detector
(5) Detector 1
(6) Detector 127
(7) Detector 2
(8) Detector 126

* In networks of less than 127 detectors, in order to avoid unused addresses from
reporting a “Detector not Present” fault, it is required that a continuous unbroken
range of detector addresses is set on the APIC.

Chapter 2: Installation and assembly

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 35

Connecting a single detector to an
addressable fire panel

An APIC may be used to decode detector status information and convey this to
the Fire Panel via the Addressable Bus 1 and Bus 2 terminal block connections
(see “Command module terminal block connections” on page 25 for details).

Figure 24: Connecting a single detector to an addressable fire panel

(4)

(1)

(2)

(3)

(1) Addressable fire panel
(2) Addressable loop
(3) APIC mounted inside the detector (Start address: 1, End address: 1)
(4) Detector 1

Note: The detector address on the RS-485 communications loop and the Fire

Panel addressable protocol address are the same, which means that no address
translation is performed. Some protocols may not support all of the available
alarm levels, and fault reporting is usually a general fault with no detailed fault
information.

Connecting to a PC

To connect a single stand-alone detector to a PC, connect the PC‘s serial port
directly to the detector‘s 9-way RS-232 port. Connections for this cable are
shown in Figure 25.

Chapter 2: Installation and assembly

36 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Figure 25: Cable Connections for Connecting to a PC

(1) 9 pin female “D” connector
(2) 9 pin female “D” connector

When multiple detectors are networked together and a command module is
being used, the PC connects to the command module‘s 9-pin RS-232 port (see
Figure 26 below). The cable connections are the same as the Standard detector
cable connections.

Figure 26: Connecting a PC to the command module’s RS-232 port

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 37

Chapter 3

Programming the unit

Summary

This chapter provides information on programming the detector.

Content

Introduction 38
Entering programming mode 39
Main menu 40
Navigating through the menus 40
Detector programmable functions 42

Time and date 45
Alarm levels 45
Alarm delays 45
ClassiFire override 45
ClassiFire alarm factor 45
Hour start of day and night operation 46
LDD enable 46
FastLearn ON 47
Auto FastLearn 47
Time delay override 47
Cascading alarms 47
Latching alarms 48
Latching faults 48
Remote day/night 48
Remote reset enable 48
Remote isolate enable 48
Programmed isolate 48
Detector Address / Number of detectors 48
Device text 49
Reference enable 49
Reference device 49
Reference level 49
Back off 49
Reset, test & isolate button enable 49
Power save 49

Chapter 3: Programming the unit

38 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Battery check enable 50
Mains check enable 50
Aspirator speed 50
Flow setup 50
Airflow monitoring 51
Chart log recording rate 51
User defined access code 52
Bms protocol 52
Factory default 52
Auto-learn scan devices 53
Looped bus (class A) network wiring connection 53
Poll timeout 53
Call centre 53
Password 53
Pager 54
Page on fault 54
Page on alarm 54
View event log 54
Diagnostics 54
Detector read 54
Loop errors 54
Dust separator condition 55
Relay tests 55
Watchdog trip count 55
Event log 55

Introduction

The detector can be configured and programmed with the use of the front panel
controls or interface to a PC.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 39

Entering programming mode

The Engineering Access code is required to allow the detector parameters to be
programmed. The access code is only valid whilst the user is in programming
mode. It will need to be entered again if programming mode is exited, if the
detector is powered down, or if <RESET> is pressed.

You must re-enter the access code if you:

• Exit Programming Mode

• Power down the detector

• Press the <RESET> key

To enter Programming Mode, press one of the following program menu keys:

• <Menu>

• Right or Left Arrow

• <Enter>

The detector responds by prompting the user for the Engineering Access Code
as follows:

Access code: 0000

Note: The factory default access code is 0102.

To enter the default access code, enter the following sequence:

Figure 27: Setting the access code

Note: Pressing the Up or Down Arrow key has no effect until you press the Right

Arrow key to place the cursor under the first digit.

All programmable functions work in a similar manner:

• Right and Left Arrow keys: Move the cursor position through the user-settable
digits.

• Up and Down Arrow keys: Step through the available values for the currently­selected digit.

• <Enter> key: Enters the displayed figure.

Chapter 3: Programming the unit

40 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Valid ranges for all programmable parameter values are displayed in
parentheses below/beside the parameter legend in Figure 29 on page 41 and
Table 3 on page 43.

Note: You cannot save an illegal value. For example, the maximum valid input

for the Fire 1 level is 10. If you enter 99, the programmer displays the Bad value
error message, and prompts you to enter the value again.

After you enter the required value, press the <Enter> key to select the amended
setting. Pressing the Right Arrow key when the cursor is on the right-most digit
has the same effect. If no programming activity is detected for 5 minutes, the
detector displays the legend Access timeout and exits Programming Mode.

Main menu

When the correct access code is entered, the display shows the main menu. The
current selection is always shown with an arrow after it. Press the <Enter> key or
the Left Arrow key to activate the selection.

The choices available in the main menu are, in order:

Setup Menu: Contains all the user-programmable functions.
Log Menu: Displays historical information such as the event log (time and date

of various events such as alarm or fault conditions).

Diagnostic Menu: Contains detector self-tests.
Reset: Clears any latched fault readings or exits from a menu item to its parent

menu. This has the same effect as pressing the <RESET> button.

Isolate: Isolates the detector. This has the same effect as isolating with the

<ISOL> button.

Exit: Exits Programming Mode
Note: When you press the Up Arrow key in the Setup Menu, the main menu

wraps around and brings up Exit, etc.

Navigating through the menus

Press the Up and Down Arrow keys to navigate through the main menu options.
The currently selected item appears at the top of the screen and is identified by
an arrow or a trailing dot.

Figure 28 on page 41 shows how pressing the Down Arrow key scrolls the
screen from the Setup menu (the current selection), to the Log menu.
Alternatively, pressing the Up Arrow retreats to the Exit command.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 41

Figure 28: Using the arrow keys to navigate

When the menu item appears with the arrow next to it, press the <Enter> key to
scroll through the list of items available for that menu.

For example, Figure 29 shows the sequence of actions necessary to program the
Fire 1 level. Having entered the Fire 1 level, the selected item indicator steps
along to the item below it in the Alarm levels sub-menu. (For Alarm level setting
information, see “Alarm levels” on page 45.) You can edit the Fire 1 level as
shown, or use the Up and Down Arrow keys to move to the next choice.

Once you reach the last entry in the sub-menu, press the <RESET> button to
move back up to the Setup menu. Pressing the <RESET> button at any time
exits Programming Mode, assuming the <RESET> button is enabled.

Figure 29: Navigating to the pre-alarm level item

Table 3 shows the full menu map for the detector, showing the choices available
within each menu and sub-menu.

The Up and Down Arrow keys move the menu pointer progressively towards the
left or right of the map as appropriate, and the Right and Left Arrow keys move
the pointer to the choices in the currently-selected menu or sub-menu.

Items within sub-menus are sequentially accessed with the Down Arrow key,
followed by the Right Arrow key. Values are edited by pressing the Right Arrow
key, followed by the Up and Down Arrow keys.

Chapter 3: Programming the unit

42 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Detector programmable functions

A list of all programmable functions follows with an explanation of their usage
and the menu and sub-menu in which they can be found. A menu map with the
location of each sub-menu and function within the main menu is shown in
Table 3. The valid input range for programming parameters is also provided.

Each function listed in Table 3 gives the following information:

• Function name and description

• Type of function. There are five types of functions:

• Yes/No

• Numeric

• Alpha

• Display

• Test

• The menu and sub-menu within which the function can be found.

• Applicability

• The legend “CM only” means that the function applies only to the
command module and is not available for the Standard detector.

• The legend “Address 000-127” means that the function may apply to the
command module and the standard detector (allowable addresses from
000 to 127). Time and date and Relay test are examples of these.

• All other functions are present in both the standard detector and command
module function lists and are used to program the detectors. They can
either be remotely set on the command module, or set locally on the
detector front panel. These are annotated “Address 001-127” since they
do not apply to the command module itself.

Where a programmable function on the command module applies to a standard
detector, the Command module will scan the loop and, if more than one detector
is present, will prompt the user for the address of the detector to be programmed.

If the function applies to the command module, the address “000” should be
entered. For other detectors on the loop (including the detector element of a
command module detector), the value is the same as the address set on the
detector’s internal DIP switch.

If a user enters an address which does not appear on the loop, the error
message, “Bad Detector” appears. This message only appears if the command
module address “000” is entered into a function which only applies to detectors
(that is, anything except “CM only” and “Address 000-127” functions).

Table 3 shows a map of the programmable functions by menu and sub-menu
with references by chapter section.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 43

Table 3: Menu reference table
Menu Submenu Programmable function Page

Setup Menu Time and Date Time HH:MM 45

Date DD:MM:YYYY

Alarm Levels Fire 2 level (1-25) 45

Fire 1 level (8-10)

Pre-Alarm level (3-8)

Aux level (2-10)

Fire 2 delay (0-90) 45

Fire 1 delay (0-90)

Pre-Alarm delay (0-90)

Aux delay (0-90)

Class. override (0-199) 45

Alarm factor (0-17) 45

Day start (0-23) 46

Night start (0-23)

LDD enable (Yes/No) 46

FastLearn On (Yes/No) 47

Auto FastLearn (Yes/No) 47

Alarm Actions Delay override (Yes/No) 47

Cascading alarms (Yes/No) 47

Latching alarms (Yes/No) 48

Latching faults (Yes/No) 48

Remote day/night (Yes/No) 48

Remote reset (Yes/No) 48

Remote isolate (Yes/No) 48

Prog. Isolate On (Yes/No) 48

Detector Detector address 48

Device text 49

Reference Reference enable (Yes/No) 49

Reference device (1-127) 49

Level (0-99) 49

Back off (0-99) 49

Front Panel ISOLATE enable (Yes/No) 49

TEST enable (Yes/No) 49

RESET enable (Yes/No) 49

Setup Menu Power Checks Power save (Yes/No) 49

Battery check enable (Yes/No) 50

Chapter 3: Programming the unit

44 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Menu Submenu Programmable function Page

Mains check enable (Yes/No) 50

Air Flow Aspirator speed (1-16) 50

Flow setup (Yes/No) 50

Sensor 1 enable (Yes/No) 51

Sensor 2 enable (Yes/No) 51

Flow pipe 1 - 4 51

Flow low 1 - 4 (0-99) 51

Flow high 1 - 4 (0-99) 51

Sensor 3 enable (Yes/No) 51

Sensor 4 enable (Yes/No) 51

Miscellaneous Chart rate (0-19) 51

Access code (0-9999) 52

BMS protocol (0-2) (command
module only)

52

Factory default (Yes/No) 52

Bus Setup (CM only) Scan for devices (Yes/No) 53

Numbers and addresses of
detectors

53

Looped bus (Yes/No) 53

Poll timeout (30-255) 53

Pager (CM only) Call center 53

Password 53

Pager 54

Page on fault (Yes/No) 54

Page on alarm (Yes/No) 54

Log Menu View event log 200 Events (000-127) 54

Diagnostic
Menu

Diagnostics Self-Test Mode (1-127) 54

Detector read Detector Read (1-127) 54

Loop errors Loop Errors (Port 1 and Port 2) 54

Dust separators 0 - 100% (1-127) 55

Relay test Aux 55

Pre-Alarm + Fault 55

Fire 1 + Fault 55

Fire 2 + Fault 55

Fault 55

Watchdog count Number of interruptions 55

Reset 40

Exit 40

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 45

Time and date

Numeric - Address 000-127: It is important that the time and date be set up

correctly on the controller’s internal calendar/ clock because it uses this
information to store events in the event log. Refer to “Event log” on page 55 for
more details. Units are supplied with the correct setting for UK time. This is
backed up with a rechargeable battery.

Alarm levels

Numeric - Address 001-127: The value set in the Pre-Alarm level , Fire 1 level

and Aux level functions in the Alarm levels sub-menu is the relatively-scaled bar
graph level at which the appropriate alarm is initiated on the detector. The Fire 2
level function assigns an absolutely-scaled alarm level in % obs/ft. or % obs/m
(as selected in configuration) to the Fire 2 alarm. The Aux level is set by factory
default at level 10, which means that this alarm will occur after the Fire 1 alarm.

Alarm delays

Numeric - Address 001-127: The alarm delay is the number of seconds that an

alarm level has to be continuously sensed before the alarm is initiated. Each
alarm level has a programmable delay of between 0 and 90 seconds.

ClassiFire override

Numeric - Address 001-127: When this function is set to a value other than

zero, the shorting together of one of the “Input 3” contacts on the detector main
circuit board by means of potential-free dry contacts will desensitise the detector
by moving the alarm levels out by the specified percentage.

ClassiFire alarm factor

0-8 - Address 001-127: The detector sensitivity is set with this entry, which will

also affect the probability of nuisance alarms. 0 = high sensitivity, higher
probability; 8 = low sensitivity, lower probability.

Note: The highest sensitivity setting is suitable for clean, environmentally

controlled environments, e.g., semiconductor manufacturing clean rooms where
airborne pollutants are kept to an absolute minimum and the least contamination
is cause for alarm. Use of this setting in a busy machine shop would lead to
relatively frequent nuisance alarms due to the normal variation of atmospheric
contamination, and a lower sensitivity setting is recommended. It is therefore
important that the alarm factor chosen is suitable for the area to be protected.
When the appropriate alarm factor for the protected area has been set, nuisance
alarms will be reduced to an absolute minimum.

Chapter 3: Programming the unit

46 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Table 4: Suggested Settings for ClassiFire Alarms
Alarm

factor

Sensitivity Probability of

nuisance alarm

Suggested protected area

0 Extremely

high

Once per year Semiconductor manufacturing clean room

1 High Once per 5 years Computer room

2 High Once per 10 years Non-smoking office

3 High Once per 50 years Clean factory

4 Medium Once per 1,000 years Warehouse

5 Medium Once per 5,000 years Warehouse with diesel trucks operating

6 Medium Once per 10,000 years Warehouse with diesel trucks operating

7 Low Once per 20,000 years Warehouse with diesel trucks operating

8 Low Once per 100,000 years Warehouse with diesel trucks operating

Hour start of day and night operation

Note: This information is provided as general guidance only. The installer is

responsible for assessing the environment and determining the appropriate
sensitivity of the ClassiFire alarm.

0-23 - Address 001-127: These values are the times to the nearest hour at

which the day/night switching is desired to take place on the detector. Entries are
made in 24-hour format, e.g., 19:00 for 7pm. If no day/night switching is required,
then both entries should be set to 00:00. Day and night switching is intended so
that the detector may automatically select a different sensitivity when the
protected area is unoccupied and fewer contaminants are being produced.
ClassiFire automatically detects the change in smoke level after the protected
area is left, and if the time at which this happens is within +/– 70 minutes of the
programmed switchover time, it selects the nighttime histogram.

Note: If the environment actually becomes more contaminated during the night

period, then ClassiFire will adapt to that too, reducing the nighttime sensitivity.
The system will automatically compensate for 1 hour seasonal time changes.

LDD enable

Yes/No - Address 001-127: When this function is set to Yes , Laser Dust

Discrimination (LDD) increases the response time of the detector slightly, while
greatly reducing the likelihood of nuisance alarms due to dust ingress. LDD may
be disabled in very clean rooms for a slightly faster response to smoke by setting
this function to No. Disabling LDD is not recommended for areas other than
manufacturing clean rooms, due to the increased probability of nuisance alarms
in most other operating environments.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 47

FastLearn ON

Yes/No - Address 001-127: Setting this function to Yes will start a FastLearn at

any time. The bar graph display on the front of the detector will show a rolling
segment display on the front panel for the 15 minutes that it takes to complete.

Note: If the detector is in FastLearn Mode, do not set this function to “No.” If you

set this function to “No”, the FastLearn process will stop. Kidde Products Ltd.
does not recommend or support the deactivation of the FastLearn function.

The text display will initially display the legend FastLearn 15 and will then count
down each minute until the FastLearn is complete.

Note: It will take a further 24 hours after the FastLearn for full sensitivity to be

reached, unless Demonstration Mode has been initiated. It is essential for proper
functioning that the detector not be left in Demonstration Mode, and that it be
allowed to complete the 24-hour learning period. To cancel Demonstration Mode,
set this function to Yes or power down and restart the detector to initiate
FastLearn Mode.

Auto FastLearn

Yes/No - Address 001-127: As default, this function is set to Yes. This ensures

that if the detector is powered down for any reason (e.g., for maintenance or to
be moved to a new area), FastLearn begins automatically on power-up. There
may be occasions when it is desirable to power down the detector for short
periods of time, and it is highly likely that ambient contaminant levels will be the
same on power-up. Under these circumstances, it may not be necessary to
perform a FastLearn process again. In this case, this function can be set to No
before power-down, allowing the detector to return to its original settings on
power-up.

Time delay override

Yes/No - Address 001-127: If this function is set to Yes , then the detector will

ignore any pre-set time delays in the event of an unacceptably rapid increase in
smoke density, thereby minimising response time to “rapid growth” fires. This
function would normally only be used where there were long time delays
programmed on the alarm levels.

Cascading alarms

Yes/No - Address 001-127: Setting this function to Yes means that the controller

starts counting down the main Fire delay only when the detector’s controller is in
Pre-Alarm state (which means that time delays on Pre-Alarm and Fire 1 are
cumulative). The Aux alarm is not included in the cumulative delay since it may
be set to a higher level than either the Pre-Alarm or Fire 1 levels.

Chapter 3: Programming the unit

48 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Latching alarms

Yes/No - Address 000-127: When this function is set to Yes it requires a reset

on the front panel or a remote reset to clear an alarm condition. It may be applied
to the command module or a Standard detector.

Latching faults

Yes/No - Address 000-127: When this function is set to Yes it requires a reset

from the front panel or a remote reset to clear fault indications. This is the factory
default setting. It may be applied to the command module or a standard detector.

Remote day/night

Yes/No - Address 001-127: Setting this function to Yes allows the detector to be

manually switched between day and night mode using a remote input.

Remote reset enable

Yes/No - Address 000-127: If remote resetting of the detector or command

module is required from the host Fire Alarm controller or other external source,
this option must be set to Yes.

Remote isolate enable

Yes/No - Address 000-127: When this function is set to Yes, a remote switch

may be used to isolate the detector or command module.

Programmed isolate

Yes/No - Address 000-127: When this function is set to Yes, the controller will

not generate alarms and will not indicate a fault condition on any fire panel which
is connected, e.g., for use during detector maintenance. The “Fault” light will be
illuminated on the detector or command module front panel. The isolated
condition will be disabled automatically after 7 days if not manually disabled.

Detector Address / Number of detectors

Display - Address 000-127: In the case of the standard detector, this function

displays the current address of the detector as set by the internal DIP switch. On
the command module, it shows the number of detectors found on the
communications loop. This function appears immediately on entering the
Detector sub-menu. The command module is always at address ‘000’. When the
command module unit is fitted in a detector, the detector must have a separate
address.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 49

Device text

Alpha - Address 000-127: This is the default text string displayed on the

standard detector or command module LCD display. If desired, this can be
altered to any 16-character alphanumeric identification. For example, the name
of the area being protected, or the name of the person responsible for fire safety
could be entered. The default device text is the detector model and the firmware
revision level for the standard detector, and “command module” and the firmware
revision level for the command module.

Reference enable

Yes/No - Address 001-127: Setting this function to Yes enables the reference

for the detector, if one has previously been allocated in Reference Device
(1-127).

Reference device

Numeric - Address 001-127: Any detector on the loop may use another detector

as a fresh air reference. When entering the Reference sub-menu, the user is
prompted to first select the address of the detector which will be using the
reference, and is then forwarded to this option. To set a detector as a reference
detector, enter its address as set by its internal DIP switch into this function.

Reference level

0-99 - Address 001-127: The value set with this function is the percentage

reference signal subtracted from the detector’s signal, if a reference device has
been allocated.

Back off

0-99 - Address 001-127: This value is the delay time (in seconds) between a

buildup of pollution being seen by the reference (if used) and the pollution being
seen by the detector.

Reset, test & isolate button enable

Yes/No - Detectors 000-127: The front panel buttons may be enabled or

disabled individually for the command module or standard detectors by setting
these functions to Yes or No.

Power save

Yes/No - Address 001-127: This function allows the detector to minimise

electrical power consumption when operating from stand-by batteries. If enabled,

Chapter 3: Programming the unit

50 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

upon main supply failure the aspirator (fan) will reduce speed to minimum,
regardless of the user-defined value. (See “Aspirator speed” below for details.)

This function has no effect on the command module.

Note: When in this condition, any smoke reading above 3 bar graph segments

on the detector will automatically remove this condition.

Battery check enable

Yes/No - Address 000-127: If no battery back-up is required, this function

should be set to No to avoid Battery fault being displayed on the front panel. If a
back-up battery is used, it is recommended that the battery check be enabled.
When this is done the user will be prompted for an input terminal to use. The
battery fault will be displayed when this contact is open. The default setting is
battery fault enabled on “I/P 1”. “Detector terminal block connections” on page 23
and Command module terminal block connections” on page 25 of this manual
show the input terminal connections for the standard detector and command
module, respectively.

Mains check enable

Yes/No - Address 000-127: The detector and command module are capable of

signaling power supply faults from the power supply equipped with a fault relay.
The mains check is disabled by default. If the feature is set to “Yes”, the user will
be prompted with an unassigned input terminal to use (this will normally be “I/P
2” if battery check is already enabled on “I/P 1”. The mains fault will be displayed
when this contact is open.

Aspirator speed

1-16 - Address 001-127: The value entered here sets the detector aspirator

speed to a range of 1 through 16 predetermined speeds. The lower the value of
the number entered, the lower the airflow rate and, therefore, the less the power
consumption will be.

Flow setup

Yes/No - Address 001-127: Setting this function to Yes puts the detector into

automatic flow limit setup mode. This takes a few minutes to set the flow fault
thresholds based on the current flow rates.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 51

Airflow monitoring

Display / Numeric - Address 001-127: There are separate Sensor pipe, Flow

low, Flow high and Flow pipe parameters for each pipe 1 to 4 on the detector.

For example, Flow pipe 1 indicates the current airflow rate for pipe 1.

Sensor pipe 1 to Sensor pipe 4 are used to enable or disable flow sensing on the
specified pipe inlet of the detector. If any pipe inlets are unused, set the relevant
flow sensor function for the pipe inlet to No to avoid unwanted flow faults.

Flow low is the level below which airflow needs to be reduced to trigger a fault
reading (which may indicate a blocked pipe).

Flow high is the level above which airflow needs to increase to trigger a fault
indication (which may indicate a loose or damaged pipe).

Flow low and Flow high parameters are automatically set up on initial power-up
or when Flow setup is selected (See “Flow setup” on page 50 for details.)

The airflow rates Flow pipe 1 to Flow pipe 4 are for display purposes only and
cannot be changed.

Chart log recording rate

0-19 - Address 000-127: This function controls how frequently the detector and

alarm level or flow rates are stored in the Standard detector or command module
internal chart recorder log.

Table 5 shows the chart log recording rates.

Table 5: Chart log recording rates
Setting Type Storage interval Time per division on chart log

0 Detector level and alarm level 1 second 10 seconds

1 Detector level and alarm level 5 seconds 50 seconds

2 Detector level and alarm level 12 seconds 2 minutes

3 Detector level and alarm level 30 seconds 5 minutes

4 Detector level and alarm level 1 minute 10 minutes

5 Detector level and alarm level 2 minutes 20 minutes

6 Detector level and alarm level 5 minutes 50 minutes

7 Detector level and alarm level 10 minutes 100 minutes

8 Detector level and alarm level 20 minutes 200 minutes

9 Detector level and alarm level 50 minutes 500 minutes

10 Detector level and airflow 1 second 10 seconds

11 Detector level and airflow 5 seconds 50 seconds

12 Detector level and airflow 12 seconds 2 minutes

13 Detector level and airflow 30 seconds 5 minutes

Chapter 3: Programming the unit

52 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Setting Type Storage interval Time per division on chart log

14 Detector level and airflow 1 minute 10 minutes

15 Detector level and airflow 2 minutes 20 minutes

16 Detector level and airflow 5 minutes 50 minutes

17 Detector level and airflow 10 minutes 100 minutes

18 Detector level and airflow 20 minutes 200 minutes

19 Detector level and airflow 50 minutes 500 minutes

In Table 5, the greyed section indicates flow rate recording while the white
section indicates detector and alarm level recording.

The factory default setting is 8. At the slowest recording rate, one month of data
can be recorded. A PC must be connected via the RS-232 port with appropriate
software to view the chart event log. (See “Connecting to a PC” on page 35 for
details on how to connect to a PC.)

User defined access code

0-9999 - Address 000-127: This function sets the access code that the user has

to input in order to modify any of the function values. The default setting is “0102”
but for added security it can be changed to any four-digit number desired by the
user.

Bms protocol

0-2 - CM only: This function sets the communications protocol for connection to

a Building Management System (BMS). (See Appendix A for details on how to
set up external communications.)

Factory default

Yes/No - Address 000 - 127: On the standard detector, this function has two

purposes. If the user has changed any of the detector’s functions, this function
will display No, indicating that the detector is not at factory default. Setting the
function to Yes will restore the detector to the factory default settings. On the
command module, this setting returns all detectors on the communications loop
to their default settings. To default an individual detector in the loop, it is
necessary to use the detector’s own front panel.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 53

Auto-learn scan devices

Yes/No - CM only: Setting this function to Yes causes the command module to

scan the RS-485 data bus for connected detectors. While scanning, the display
will show Scanning loop and display a progress bar. When finished, the display
will show the number of devices found and the detector addresses in the form.
The list “wraps around,” so that pressing Up Arrow when viewing Address 001
brings up detector number 127. Pressing Right Arrow allows the user to remove
a detector address from the loop (by changing “Y” to “N”), or to re-instate a
previously removed detector (by changing “N” to “Y”). This is different from the
Isolate function in that a fault is still generated on the command module.
However, this may need to be done if replacing a detector on the loop so that the
detector’s address becomes available to the replacement. After replacing the
detector, the address may be re-enabled.

Looped bus (class A) network wiring connection

Yes/No - CM only: This function is set to Yes to signify that the detectors are

connected to the command module in a fault tolerant loop configuration (See
“Fault-tolerant detector loop configuration” on page 32 for further setup
information.) Failing to set this value to Yes for a loop configuration will mean that
the fault monitoring advantages of the detector loop are lost. Setting the value to
Yes for a non-fault tolerant configuration will generate detector loop errors, so it
is important that the appropriate configuration is identified.

Poll timeout

30-255 - CM only: This is the time, specified in milliseconds, which a device has

to respond to a poll from the command module. If no response is received for this
time then, a Comms fault message is shown for this device on the command
module display. This may be caused by communications delays, e.g., when units
are communicating across a Wide Area Network. This function may then be set
to a more suitable value.

Note: If in doubt about the setting of this function, please contact Technical

Support.

Call centre

Numeric - CM only: This is the phone number the modem dials up to send a

message. For more detail on this and the other functions in the “Pager” sub­menu, refer to Appendix A.

Password

Alpha - CM only: This is an optional password used to access the system.

Chapter 3: Programming the unit

54 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Pager

Numeric - CM only: Note: This is the number of the actual pager.

Page on fault

Yes/No - CM only: Where a pager has been allocated as above, this function

determines whether the pager holder is to be paged when a fault condition is
generated by the command module.

Page on alarm

Yes/No - CM only: Where a pager has been allocated as above, this function

determines whether the pager holder

is to be paged when a fire alarm condition is generated by the command module.

View event log

Display - Address 000-127: This function shows the start and stop time and

date of events such as FastLearn, alarm condition and error messages. (See
“Event log” on page 55 for more information on logging events.) The event log
can also be downloaded to a PC via the RS-232 serial port. (See “Connecting to
a PC” on page 35 for details on how to connect to a PC.)

Diagnostics

Test - Address 001-127: This function puts the detector into self-test mode. On

a command module, it tests all detectors on the loop.

Detector read

Display - Address 001-127: This function displays five values as shown:

010.5%

064 067 066 067

The top value is the detector’s current smoke level reading as a percentage of
the full-scale value, and the bottom four readings are the current flow rates on
each pipe. The flow rates are scaled based on the application. The absolute flow
reading is less important than a change in the reading.

Loop errors

Display: This displays the percentage of loop errors in messages addressed to

the detector or command module from the detector loop, along with a count of
the number of received messages since the last message was received on port 1
and port 2 of the RS-485 bus.

Chapter 3: Programming the unit

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 55

Dust separator condition

Display - Address 001-127: The value given at this function is the efficiency

rating of the dust separator (filter) in the detector. A new cartridge will give the
reading Separator 100.0% in this function. When the efficiency has decreased to
80%, the Fault indicator LED will illuminate and the text display will show
Separator renew.

If the separator (filter) cartridge is missing or improperly fitted, the display will
read Separator change. Installing a new cartridge will automatically reset this
figure to 100%.

Relay tests

Test - Address 000-127: This tests the connection of the command module or

detector to an alarm panel by operating the alarm or fault relay currently
selected. Assuming proper connection, this should give appropriate indications
on the fire panel. The test runs through the sequence:

Aux > Pre-Alarm + Fault > Fire 1 + Fault > Fire 2 + Fault > Fault

The test steps to the next test on the list when you press the ENTER key.
Although the relevant relays are activated at each stage, the associated lights on
the front panel are not illuminated or recorded in the event log.

Caution: Operating the Alarm or fault relays will physically activate and switch

the contacts. Ensure that the receiving Fire Panel is in test/maintenance mode
before initiating this test.

Watchdog trip count

Display: The watchdog is a circuit built into the controller that restarts the

controller in the event of a failure to function properly. This could be as a result of
electrical spikes. This count shows the number of interruptions found. The details
of each problem can be found in the event log.

Event log

An event is defined as operation of any of the front panel controls (when
enabled), a signal received from a remote source (e.g., the command module or
PC), a detector level exceeding the Aux, Pre-Alarm, Fire 1 or Fire 2 thresholds or
certain commands sent from the remote software or SenseNET. The event log
will also store items such as day and night start times, demonstration mode,
power fault, detector fault, etc. The detector keeps a log of the last 200 events for
reference purposes.

The event log can be downloaded using a PC that has the remote software
installed and is connected to the detector’s RS-232 port using a serial cable.
(See “Connecting to a PC” on page 35 for details on how to connect to a PC.)

Chapter 3: Programming the unit

56 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

The event log can also be viewed in the Log menu , which prints out the event
log in reverse order, i.e., the last recorded event is printed out first.

When the buffer that stores events is full (200 events are stored) and a new
event occurs, the oldest event in the buffer is discarded.

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 57

Chapter 4

Commissioning

Summary

This chapter provides information to commission the detection system.

Content

Introduction 58
Commissioning 58
Precommissioning preparation 59
Acclimation period 59
Transport time verification 60
Gross smoke testing 60

Aerosol smoke spray 60
Wire burner tests 61

Chapter 4: Commissioning

58 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Introduction

This chapter covers the commissioning procedures for the detector. Before
commissioning the detector the local standards of aspirating detection systems
must be consulted. These standards differ widely throughout the world and
specific advice for the market in one country may not be applicable to another.

Commissioning strategy will initially depend upon the environment in which the
detector is installed. For instance, the test for a computer room (which should be
a relatively clean environment) would be very different from, say, a flour mill,
which would probably have a high level of airborne particulate content.

A widely accepted standard for computer rooms/EDP areas is British Standard
BS6266, equipment overheating at a stage well before combustion. To perform
the test electrically overload a 1 metre length of PVC insulated wire of 10/0.1mm
gauge for one minute using an appropriate power supply. The detector has two
minutes from the end of the wire burn to give an alarm indication.

For areas with higher levels of background particulate matter testing
methodology would be similar to that of standard point detectors.

Commissioning

The following brief checklist allows quick setup of the detector. This procedure
will be adequate for most standard installations.

To commission the detector:

1. Before powering up the detector, visually check all cabling to ensure correct
connection. If wire identification is not immediately clear (e.g. by use of
different colored wires or wire identification sleeves), an electrical check
should be made. Any damage caused by misconnection of the detector is not
covered by warranty.

Caution: Ensure all wiring connections are checked prior to powering up the

detector. Incorrect wiring of the detector will cause permanent damage to the
detector.

2. Power up the unit and enter the Installer Access Code. The factory default
setting for this is 0102. (See “Entering programming mode” on page 39 for
details.)

3. Ensure all detectors in the network are clear of troubles and alarms, if
applicable.

4. Enter the Setup menu and verify that the time and date are correct. (See
“Time and date” on page 45 for details.)

5. Set an appropriate alarm factor for the protected environment. The detector
will perform a FastLearn for the new alarm factor. (See “ClassiFire alarm
factor” on page 45 for details.)

Chapter 4: Commissioning

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 59

6. When the detector is still in FastLearn mode, exit the Programming Mode on
the display by pressing <RESET> and set the detector into Demonstration
Mode (see “Detector programmable functions” on page 42 for details). To do
this, press and hold down the <RESET> button and simultaneously depress
the <TEST> and <ISOL> buttons. The text display will then display “Demo
mode” and the time and date.

7. Wait for the FastLearn to finish (when the legend FastLearn is no longer
displayed and the “rolling” LED indications stop sequencing) and perform any
necessary smoke tests, ensuring that the detector reacts appropriately, and
let the smoke fully dissipate.

8. Perform another FastLearn, this time not putting the detector into
Demonstration Mode. The detector will generate no alarms during the 15­minute FastLearn period, and after this, the detector will operate at a reduced
sensitivity for 24 hours while ClassiFire acclimates to the protected
environment and sets up appropriate day and night sensitivity settings.

Precommissioning preparation

Commissioning is recommended after all construction has been completed and
cleaned of any lingering post-construction dirt. If ambient monitoring conditions
are recorded before the installation is cleaned up, they may not accurately reflect
actual normal operating conditions that need to be used as reference data for
follow-up maintenance procedures and tests.

Acclimation period

The detector will operate at a reduced sensitivity for 24 hours. ClassiFire will set
up the appropriate day and night sensitivity settings. All air handling units,
thermostats and other systems that can have an effect on the operating
environment should be turned on to simulate normal operating conditions as
closely as possible. After approximately one week of monitoring time (depending
on chart log recording rate), download the detector event log to a PC from the
RS232 port using a serial cable.

Chapter 4: Commissioning

60 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Transport time verification

The maximum transport time verification test is the measure of the amount of
time it takes for the detector to respond to smoke that enters the pipe at the
sampling point furthest from the Detector. The results of this test and the
calculated maximum transport time from PipeCAD must be recorded on the
checksheet. Measured transport time less than the calculated time is acceptable.

To measure the maximum transport time of the system:

1. Determine the furthest sampling point from the detector.

2. Allow test smoke to enter the pipe at the furthest sampling point.

3. Record the amount of time for the detector to respond. This is the actual
maximum transport time.

Gross smoke testing

The gross smoke test is a measurement of the amount of time elapsing from the
activation of the smoke generating medium, until Pre-Alarm 1 and Alarm 1 is
reached. This test should be repeated at least three times with consistent results.
Recommended smoke generating medium is aerosol simulated smoke or wire
burner.

Aerosol smoke spray

There are a number of commercially available aerosol smoke sprays or “canned
smoke.” Please refer to your supplier for a recommended product. When using
canned smoke, introduce only enough smoke into the protected area that will
cause an FIRE 1 condition. This may require a number of practice sprays. Follow
the manufacturer’s instructions.

Caution: Oil-based canisters that are used to test point detectors are not suitable

for testing aspirating systems, as the particulate is heavy and tends to drop out in
the pipe, never actually reaching the detector. Also, the oily residue that is left
behind may affect the functionality of the detector.

Chapter 4: Commissioning

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 61

Wire burner tests

The wire burner test is considered the most representative test of incipient fire
hazard detection in telecommunications or computer room environments. The
test is performed by applying a voltage to a piece of PVC-insulated cable. Smoke
is produced from the overheated PVC insulation by evaporation and
condensation of the plasticizer. As the wire becomes hotter, hydrogen chloride
(HCl) gas is emitted from the insulation. The by-products of overheated PVC
insulation can be detected by the detector.

Wire burner Test 1 (optional)

The following test is considered unlikely to produce hydrochloric acid vapor. This
test may be undertaken in underfloor spaces or ceiling voids.

1. Connect a 6.5-foot (2-meter) length of wire to a 6 VAC source of at least
16 Amps rating per wire for a period of 3 minutes.

2. The system will respond within 120 seconds following de-energization. After
this period, very little smoke is given off.

Notes

• The wire is subject to cooling if positioned in direct contact with air flows and
may need to be shielded.

• The wire cross-section should be American Wire Gauge (AWG) 10 with the
following diameter and area:
Diameter = 2.59 mm or 0.10189 in.
Cross-Section Area = 5.0 mm² or 0.00775 in.²

Wire burner Test 2 (optional)
WARNING: The following test is considered to produce sufficiently high

temperature to generate small quantities of hydrogen chloride or hydrochloric
acid gas. Be sure to keep a safe distance away while voltage is being applied.

Caution: A wire burner/canned smoke test could activate spot-type detectors.

This test may be undertaken in underfloor spaces or ceiling voids where rapid
airflow may render Test 1 unsuitable.

1. Connect a 3.25-foot (1-meter) length of wire to a 6 VAC source of at least
16 Amps rating per wire for a period of 1 minute.

2. The system will respond within 120 seconds following de-energization. After
this period, most of the insulation should be burned off.

Note: The wire cross-section should be American Wire Gauge (AWG) 10 with

the following diameter and area:
Diameter = 2.59 mm or 0.10189 in.
Cross-section area = 5.0 mm² or 0.00775 in.²

Chapter 4: Commissioning

62 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 63

Chapter 5

Troubleshooting

Summary

This chapter provides information to troubleshoot the detection system.

Content

Troubleshooting the detector 64
Error messages 66

Chapter 5: Troubleshooting

64 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Troubleshooting the detector

This chapter provides some possible solutions if a problem should occur with
your detector. If the problem is not addressed in this chapter or, if after
performing the suggested actions, the problem persists, contact Technical
Support.

Note: Consult either the Remote Control Software User Manual or SenseNET

Software User Manual for more information about the solutions or corrective

actions discussed here.

Table 6: Troubleshooting guide
Problem Solution or corrective action

Pressing <Reset> or
<Isol> button has no
effect

Check that the controls have been enabled. These functions are disabled
by default. (See “Reset, test & isolate button enable” on page 49 for
details.)

Nuisance alarms
occur too often

Check that the ClassiFire alarm factor setting is appropriate for the normal
working environment of the protected area. (See “ClassiFire alarm factor”
on page 45 for details.)

Check that the detector is not in demonstration mode. This can be
ascertained by viewing the event log and checking that the entry Demo
Mode has a higher log entry number than the most recent FastLearn start
and FastLearn end entries. (See “View event log” on page 54 and “Event
log” on page 55 for details.) Remember that the log entries are in reverse
order, with the most recent entries appearing first. If the log shows that
demonstration mode was invoked during the last FastLearn period, start a
new FastLearn and allow it to complete its 24-hour cycle. (Refer to
“FastLearn ON” on page 47 for details.)

From the event log, check that at least 24 hours have elapsed since the
last FastLearn end entry. (See “View event log” on page 54 and “Event log”
on page 55 for details.)

Check that day-night switchover times are appropriately set to reflect active
and non-active periods. (Refer to “Hour start of day and night operation” on
page 46 in Chapter 3 for details.)

Elevated smoke
levels do not
generate alarms

Check that detector is not Isolated or in FastLearn (if Isolated, the Fault
light will be lit).

Check that the detector sampling points are in the smoke stream.

Check that unused sampling pipe ports are closed and that sampling pipes
are firmly and cleanly seated in their ports and undamaged.

Check that the correct ClassiFire alarm setting has been set. (Refer to
“ClassiFire alarm factor” on page 45 for details.)

Check that the detector has either had a 24 hour learning period or that it
has been placed in demonstration mode.

Low mean output Check that the dust separator (filter) does not require changing (refer to

“Dust separator condition” on page 55 for details) and that the air plenum
chamber is clean. The chamber may become clogged when, for example,
heavy building activity has occurred near the sampling pipes. If so, the
chamber may require factory service. The detector is not designed to
handle large quantities of coarse debris and dust.

Chapter 5: Troubleshooting

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 65

Problem Solution or corrective action

Detector sensitivity
varies over time

There are many reasons why particle densities may vary, and the
ClassiFire system automatically compensates for this in order to replace
the likelihood of nuisance alarms due to normal variations in background
smoke density. Within limits set by the ClassiFire alarm factor, this is a
normal part of the detector‘s operation.

Flow fault errors These occur when the airflow rate into the detector exceeds the

preprogrammed parameters. As the detector “learns” the flow setup from
the initial installation, this usually means that there has been some change
in conditions. A Flow high fault may indicate that a sampling pipe is
damaged, and a Flow low fault may indicate that the pipe has been
blocked, e.g., by nearby building operations.

If the detector input is sampled from one area and the exhaust is in another
area with different pressure (e.g., the detector is in a roof space and
sampling from an enclosed room), this may lead to flow faults. In this case,
it would be necessary to lead a pipe from the exhaust to the protected area
to ensure nominal flow.

“Low Flow” error
message

Check that the pipe giving the error is not blocked.

If the pipe is unused, check that the flow sensor for this pipe has been
disabled. (Refer to “Airflow monitoring” on page 51 in Chapter 3 for
details.)

Check that the low flow fault threshold is not set too high. (Refer to “

A

irflow

monitoring” on page 51 for details.)

Consider increasing the aspirator (fan) speed. (Refer to “Aspirator speed”
on page 50 for details.)

“High Flow” error
message

Check that the pipe is pushed home into the inlet and is not broken or
cracked.

Check that installed pipework is fitted with endcaps. PipeCAD pipe
modeling software prompts for the use of appropriate endcaps. Open bore
pipes are not recommended.

Check that the high flow fault threshold is not set too low. (Refer to “

A

irflow

monitoring” on page 51 for details.)

Consider reducing the aspirator (fan) speed. (Refer to “Aspirator speed” on
page 50 for details.)

Cannot refit the front
cover

Check that the recessed top edge of the cover is securely located behind
the locating guard rails on the chassis.

Check that the key is turned to the unlocked position (counter-clockwise).

No display Check that the display ribbon cable is securely connected to the

detector/command module main board and to the display board as
appropriate.

Check that the display ribbon cable has not been damaged.

Chapter 5: Troubleshooting

66 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Error messages

The detector front panel display can provide a wide range of information about
the detector. Table 7 lists error messages and their meanings.

Table 7: Error messages
Error message Meaning and suggested action

Separator renew The dust separator (filter) requires replacement.

Separator change The dust separator (filter) is missing or improperly fitted.

Bad value, Bad time, Bad date A value has been input into a function, which is outside the

parameter range for that value. Take note of the range of
values allowed (in brackets) and try again.

Bad detector A detector address has been entered which is either outside

the allowed range or which is not present on the loop. This may
also happen if the user has entered address 000 (command
module) for a function which it does not support (e.g., alarm
factors).

No response The command module has unsuccessfully attempted to read a

function value from a connected unit. Check that the unit
connected supports this function.

001 X 002 Loop break There is a break in the communications loop between the

detector addresses specified. Check the wiring.

Comms fault The command module has polled a detector and no response

has been received after the specified poll timeout value. (See
“Poll timeout” on page 53 for details.)

Bad access code An incorrect access code has been entered. Enter the correct

code.

Battery fault This indicates either that the standby battery has discharged to

a predetermined level or that no standby battery is fitted. In the
former case, the battery should be replaced and recharged. In
the latter case, the battery check should be disabled. (See
“Battery check enable” on page 50 for details). It is important
that the battery fault be acted upon as soon as noticed, as
excessive discharge may cause damage to the battery. The
battery fault condition occurs before the battery reaches this
portion of the discharge curve.

Watchdog reset This indicates that there has been a power supply fault. If there

are frequent power outages, it may be advisable to power the
unit from a UPS.

Detector fault This indicates that there is a problem with the detector head.

This may be due to a number of causes. Refer to the chart
readout if this can be downloaded to a PC and note the
detector signal level at the time of the fault. When as much
information as possible has been determined about the
conditions at the time of the error, please contact Technical
Support.

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 67

Chapter 6

Maintenance

Summary

This chapter provides scheduled and unscheduled maintenance procedures.

Content

Introduction 68
Scheduled maintenance 68
Maintenance procedures 69

Visual check 69
Gross smoke test 69
Transport time verification test 69
Detector sensitivity test 69
Cleaning the detector 70
Replacing the dust separator (Filter) cartridge 70

Chapter 6: Maintenance

68 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Introduction

This chapter contains maintenance instructions for the detection system. These
procedures should be performed on a scheduled basis. In the event that system
problems are found during routine maintenance, refer to Chapter 5
“Troubleshooting” on page 63.

Scheduled maintenance

The scheduled maintenance of the system should be performed at an
established interval. The interval between performance of maintenance
procedures should not exceed any imposed regulations. (See NFPA 72 or other
local requirements.)

Local standards and specification requirements must be adhered to. A typical
maintenance plan is listed in Table 8 below.

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).

Table 8: Maintenance plan
Step Procedure

1 Check detector, wiring and pipework for damage

2 Check original design is still valid, e.g. changes due to building upgrades

3 Check detector for contamination and clean if necessary

4 Check maintenance logs for issues and rectify as appropriate

5 Check transport times against original records: significant increases or decreases in

transport times may imply damaged pipes or sampling holes that need clearing

6 Isolate detector from fire panel if required

7 Smoke test to check detector operation and Alarm relay connection

8 Simulate a fault to check the Fault relay and connection

9 Complete and file maintenance records

10 Reconnect detector to fire panel if required

Chapter 6: Maintenance

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 69

Maintenance procedures

The following paragraphs outline general scheduled maintenance procedures to
be performed on an “as necessary” basis.

Visual check

The visual check must be performed every six months. This check is to ensure
pipe network integrity.

To perform the visual check, observe the entire piping network and check for
abnormalities in the pipes, including any breaks, blockages, crimps, etc.

Gross smoke test

The gross smoke test is a Go/No-Go test which ensures that the detector
responds to smoke.

This test must be performed at system commissioning and every year thereafter.

To perform this test, smoke must be introduced into the last sampling hole in
each branch of the pipe network and the proper response must be verified by the
detector. Smoke from a punk or cotton wick may be used. Aerosol test smoke
may also be used.

Note: For cleanroom applications, consult with supplier for gross smoke test

methods.

Transport time verification test

The maximum transport time of the pipe network must be measured and
compared to the recorded transport time at commissioning. (Refer to “Transport
time verification” on page 60 of this manual for test details.) The transport time
verification test must be done at commissioning and every year thereafter.

Detector sensitivity test

The detector sensitivity test must be performed within one year of installation and
every alternate year thereafter.

Example:

• Year-one check

• Year-three check

• If years one and three are OK, go to five-year interval.

The detector employs a self-monitoring, automatically-adjusting calibration for the
system. The inspection only requires a periodic visual inspection for a detector
fault indication and performing the detector sensitivity test function.

Chapter 6: Maintenance

70 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

If the self-monitoring feature of the system senses that the operation of the
detector head is outside its normal range, a trouble condition will be generated.

Cleaning the detector

The exterior of the detector should be cleaned as necessary. Clean the detector
with a damp (not wet) cloth.

Caution: Do not use solvents to clean the detector. Use of solvents may cause

damage to the detector.

Replacing the dust separator (Filter) cartridge

The only part that may require field replacement during servicing is the dust
separator (filter) cartridge. Its condition can be checked using the Dust Separator
test in the Diagnostics menu of the Remote Control software or SenseNET
software, which gives a percentage reading of dust separator (filter) efficiency.
When this level drops to 80%, the detector will signal a Separator Renew fault
indicating that the dust separator cartridge needs to be replaced.

For more information, refer to either the Remote Control Software User Guide or
SenseNET Software User Guide.

It is recommended that dust separators be changed at an interval of not more
than 3 years. After replacing the filter, the detector must be put into FastLearn
mode to reset the filter condition reading.

As dust contained in the dust separators may expose maintenance personnel to

a “Nuisance Dust” hazard as defined by the Control of Substances Hazardous to
Health (COSHH), it is strongly recommended that suitable masks and protective

clothing be worn when changing filters.

Note: Used dust separator cartridges are not intended for reuse and should be

discarded.

To replace the cartridge:

1. Open the unit’s front cover and locate the dust separator (filter) handle at the
bottom right of the detector.

2. Remove the black end piece from the filter cartridge and dispose of the
cartridge.

3. Fit the new cartridge into the plastic end piece and slide the entire assembly
into the detector, using the handle. The cartridge should be fitted with the
legend “IN” towards the front of the detector.

Note: If the cartridge is inserted with the wrong orientation, the detector will

not register its presence and the Separator change message will remain on
the display.

Chapter 6: Maintenance

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 71

4. When the replacement cartridge is in place, the detector will automatically
start a FastLearnTM routine.

5. Place the front cover back onto the detector.

Figure 30 below shows how the dust separator (filter) cartridge is replaced. Make
sure to push the cartridge fully home, or the detector will fail to register its
presence, and will continue to indicate Separator change.

Figure 30: Replacing the dust separator (filter) cartridge

(1) Filter
(2) New filter
(3) Old filter

Chapter 6: Maintenance

72 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 73

Appendix A

External communications

Summary

This chapter provides information on other supported external communication
methods.

Content

BMS protocols on the detector command module 74
Paging from the command module 76
Configuring the software 76

Appendix A: External communications

74 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

BMS protocols on the detector command module

The command module of the detector has a second RS-232 port that can be
used to send messages to a pager or compatible GSM phone using a modem, or
to enable connection to a Building Management System (BMS). This comprises
the terminals “RS 232 Tx” (transmit), “RS 232 Rx” (receive), and “GND” on the
green terminal block inside the unit.

The set-up of the command module uses three functions:

• BMS protocol

• Page on fault

• Page on alarm

When either Page on fault or Page on alarm is enabled, the second serial port is
reserved exclusively for paging purposes by setting BMS protocol to 0 (TAP
paging).

The programmable function “BMS protocol” sets the communications format that
is used by the second serial port to communicate with the BMS. Setting BMS
protocol to anything other than 0 (Tap paging) will disable functions Page on fault
and Page on alarm if they are enabled.

Table 9: BMS protocols
Protocol

number

Protocol

0 TAP paging (default)

1 Output only. Events are sent in the same ASCII text format as the internal event

long display. This may be used to drive a serial printer if required.

2 BACnet ANSI/ASHRAE standard 135-1995

Text output support (protocol 1)

Text is output at 9600 baud, 8 bit with no parity. When an event occurs, the event
is printed in the following format:

Device “command module” or “Detector n”
Event “Fire 1”
Timedate 10:32 21/03/2001

BACNET support (protocol 2)

The command module models the attached detectors as analog value object
types instances 2 to 128. The command module status is stored as analog value
instance 1. The Present_Value property of the analog objects can have one of
the values shown in Table 10.

Appendix A: External communications

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 75

Table 10: Values of Present_Value property
Value Description

0 Disabled

2 Fault

32 Normal

48 Prealarm

64 Fire 1

128 Fire 2

The Device object and the Analog Input objects support the properties shown in
Table 11.

Table 11: Device object and Analog Input object properties
Device object Analog Input objects

0bject_Identifier 0bject_Identifier

Object_Name Object_Name

Object_Type Object_Type

System_Status Present_Value

Vendor_Name Status_Flags

Vendor_Identifier Event_Stater

Model_Name Out_Of_Service

Firmware_Revision Units

Application_Software_Version

Protocol_Version

Protocol_Conformance_Class

Protocol_Services_Supported

Protocol_Object_Types_Supported

Max_APDU_Length_Accepted

Segmentation_Supported

APDU_Timeout

Number_Of_APDU_Retries

For additional information on BACnet implementation, contact technical support.

Appendix A: External communications

76 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

Paging from the command module

The detector command module has the ability to send text messages to
alphanumeric pagers or SMS messages to some mobile phones.

In order to send messages to a pager or similar device, a modem must be
plugged into the RS-232TX and RS-232RX terminals of the command module
using a suitable cable.

The pager or SMS-capable phone call centers must support the TAP protocol.

Contact your pager provider to check whether they provide access with the TAP
protocol.

Configuring the software

No manual configuration of the modem is required, as the command module
configures the modem automatically on dialing.

The command module has three entries used to send messages. The functions
are located in Setup menu>Pager.

They are described below:

• Call Centre: The phone number the modem dials up to send a message.

• Password: An optional password used to access the system.

• Pager: The number of the actual pager. This number will be detailed in the
pager or SMS phone documentation.

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 77

Glossary

°C Degrees Centigrade

°F Degrees Fahrenheit

A Ampere

AC Alternating current

ADA Americans with Disabilities Act

AH Ampere hour

AHJ Authority having jurisdiction

ARC Automatic release circuit

AWG American wire gauge

CSFM California State Fire Marshal

DACT Digital alarm comm. transmitter

DC Direct current

DET Detector

EOLD End of line device

EOLR End of line resistor

FM Factory Mutual

FSD Full scale deflection

ft. Feet

HSSD High sensitivity smoke detector

Hz Hertz (frequency)

in. Inches

LCD Liquid crystal display

LED Light emitting diode

MEA Materials and Equipment Acceptance

Division of the City of New York

NAC Notification appliance circuit

N.C. Normally closed

NEC National Electrical Code

NFPA National Fire Protection Association

N.O. Normally open

NYC New York City

Glossary

78 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook

PCB Printed circuit board

pF Pico farads

P/N Part number

PSU Power supply unit

RAM Random access memory

SLC Signaling line circuit

TB Terminal block

UL/ULI Underwriters Laboratories, Inc.

V Volts

VAC Volts AC

VDC Volts DC

VRMS Volts root mean square

LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 79

Index

A

Acclimation period, 59

B

BMS protocols on the detector command

module, 74

C

Command module detector interior view, 9
Commissioning, 58
Configuring the software, 76
Connecting a Command Module to an

addressable fire pane, 33

Connecting a detector network to a command

module, 32

Connecting a single detector to an

addressable fire panel, 35
Connecting to a PC, 35
Connections

Command module terminal block

connections, 25

Connecting power cables, 26
Detector terminal block connections, 23
Power supply connections, 28

D

Demonstration mode, 29
Detector address

Setting the detector address, 30

Display types, 11

F

Fault-tolerant detector loop configuration, 32

G

Gross smoke testing, 60

I

Installation, 15

Electrical installation, 22
Mechanical installation, 19

Interfacing with fire alarm panels, 30

M

Maintenance, 69

N

Nonfault-tolerant serial configuration, 32

P

Paging from the command module, 76
Programming

detector functions, 42
Main menu, 40
Navigating, 40

programming mode/installer access code, 39

S

Sampling pipe design, 17
Software

available software, 2
Specifications, 3
Stand-alone command module interior view, 8
Stand-alone command module/command

module detector, 6

Standard and command module detector

controls and indicators, 10
Standard detector, 4
Standard detector interior view, 7

T

Transport time verification, 60
Troubleshooting

Error messages, 66

Troubleshooting the detector, 64

W

Wire burner tests, 61

Index

80 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook