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ASPIRATED SMOKE DETECTOR
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS (CE)
1 INTRODUCTION
The LASD2 utilises two, high-sensitivity laser point detectors in an aspirated
enclosure. Each detector monitors the air from separate sampling pipes
which allows for a large area of coverage using sampling holes in place of
traditional point detectors. Three levels of alarm are provided for each
detector and can be set according to application.
A high performance aspirator and an independent flow sensing system for
each channel ensure a constant, monitored airflow which can be displayed
on 10 element bargraphs with adjustments for high and low flow thresholds.
Faults and alarms are reported via separate volt-free contacts.
The LASD2 can be fully configured using integrated programming keys or via
the USB interface port with the Windows™ based Configuration program.
The program also provides access to the events data that are logged within
the unit.
CAUTION! THE LASD2 SYSTEM HAS BEEN INDEPENDENTLY TESTED
AND CERTIFIED TO CEA4022 AND MUST BE INSTALLED IN STRICT
COMPLIANCE WITH THE INSTRUCTIONS BELOW IF THE CERTIFICATION IS
TO BE MAINTAINED
2 SYSTEM INSTALLATION
WARNING! THIS EQUIPMENT MUST BE INSTALLED BY A QUALIFIED
INSTALLER IN ACCORDANCE WITH ALL LOCAL AND NATIONAL
REGULATIONS
Remove the transparent cover using the special tool provided to unscrew the
tamper proof fasteners. Use the template provided to accurately position the
holes then secure the unit to a suitable surface (wall or ceiling) through the 4
corner fixing points. Ensure that the correct fasteners are used for the type of
surface that the unit is mounted on.
LASER
LASD2 (Dual Channel)
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Related Manuals for Zeta Alarm Systems LASD2
Summary of Contents for Zeta Alarm Systems LASD2
- Page 1 10 element bargraphs with adjustments for high and low flow thresholds. Faults and alarms are reported via separate volt-free contacts. The LASD2 can be fully configured using integrated programming keys or via the USB interface port with the Windows™ based Configuration program.
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Page 2: Field Connections
3 WIRING For correct operation of the unit it is essential that the case is fully sealed so that air can only be pulled into the system through the aspirating pipe. For this reason, all wiring must pass through the cable seals provided and no additional holes should be made. - Page 3 3.1.1 BATTERY The LASD2 unit is designed to run from a nominal 24V DC supply. The supply should be connected to the 2 way ‘BATTERY’ connector on the main circuit board ensuring that the wires are correctly orientated. It is recommended that the wires should be a minimum size of 16 x 0.25mm...
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Page 4: External Reset
LASD2 together with the necessary USB drivers. 4 DETECTORS The LASD2 is supplied with two high sensitivity laser point detectors that interface directly with the LASD2 circuit. This allows the detectors status and analogue smoke level output to be read and interpreted by the LASD2 processor. -
Page 5: Pipe Installation
3 metre lengths and is cut as required and joined by solvent welded sockets (permanent), or socket unions (removable). THE LASD2 INLET PORTS ARE TAPERED TO ALLOW A PUSH FIT OF THE SAMPLING PIPE. THE PIPE SHOULD BE CUT SQUARELY TO ENSURE A GOOD, AIRTIGHT SEAL. - Page 6 the side holes will tend to be very unbalanced. The end cap can be considered a sampling point if required. 5.4 BENDS Bends are either 45 or 90 degrees. For the 90-degree bends it is very important that swept bends are used and not sharp elbows, as this will introduce unacceptable pressure losses, and significantly increase the response times from holes beyond the bend.
- Page 7 As standard, the filtration should be sufficient for all but extremely dusty conditions where a Harsh Environment Filter – order code FLU1 (3/4”) / FLU2 (25mm) - should be fitted between the unit and the first sampling point. 5.8 STANDARD PIPE CONFIGURATION (Drawing not to scale) Pipe length 50m max per channel with up to 11 x 3mm sampling points and 6mm end hole per pipe.
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Page 8: Display Functions
6 SETUP 6.1 DISPLAY FUNCTIONS Each channel has the following function LEDs: ALERT ALARM ACTION ALARM FIRE ALARM BARGRAPH of SMOKE LEVEL or AIRFLOW SPEED AIRFLOW OK - HIGH AIRFLOW - LOW AIRFLOW SMOKE DETECTOR FAULT ISOLATE The following LEDs are common to both channels: POWER ON GENERAL FAULT (Mains PSU Option Only) -
Page 9: Fan Fault
MAINS FAILURE (Mains PSU Option Only) BATTERY LOW (Mains PSU Option Only) FAN FAULT RESET UNLOCK CODE ENTRY 6.2 USER FUNCTIONS Press and hold SELECT and CHANGE keys simultaneously until the sounder beeps to initialize function selection. Press and release SELECT key to sequentially step through functions. - Page 10 Set SENSITIVITY of channel 1 bargraph to changes in airflow velocity (FLOW 1 OK flashes). 0 = Minimum Sensitivity, 9 = Maximum Sensitivity. Set SENSITIVITY of channel 2 bargraph to changes in airflow velocity (FLOW 2 OK flashes). 0 = Minimum Sensitivity, 9 = Maximum Sensitivity.
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Page 11: Set-Up Notes
Calibrate flow sensors (FAN FAULT LED flashes). CHANGE key must be pressed for at least 2 seconds to initiate the flow calibration process. FAN and POWER LEDs flash to indicate calibration in progress. Fan is temporarily stopped as part of the calibration process. - Page 12 As a minimum, smoke should be introduced to the furthest sampling point from the LASD2 unit on each branch of the pipe. The choice of smoke source is dependant on the installation but in all cases the smoke must be present for the duration of the test –...
- Page 13 FL55 - are replaced and detectors cleaned every six months (more frequently for dirty environments). MAINTENANCE SHOULD ONLY BE CARRIED OUT BY QUALIFIED PERSONNEL. BEFORE CARRYING OUT ANY MAINTENANCE, NOTIFY THE PROPER AUTHORITIES AND ISOLATE UNIT FROM THE FIRE CONTROL PANEL TO PREVENT UNWANTED ALARMS 1.
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Page 14: Problem Solving
15. Reconnect disabled circuits. 9 PROBLEM SOLVING PROBLEM POSSIBLE SOLUTIONS Power light flashing Ensure supply to BATTERY connector within limits. No lights on display. Ensure supply to BATTERY connector within Fan not running specified limits. Ensure supply leads correctly orientated. Ensure that BAT FUSE correctly seated in socket and fuse not blown. -
Page 15: Specifications
110 120 130 150 170 190 220 235 265 300 Typical current consumption figures for different fan speeds. Results are based upon a LASD2 installation with 10m of standard, 25mm aspirating pipe per channel. The unit was powered from a 24V supply. - Page 16 GLT Exports Limited, Detection House, 72-78 Morfa Road, Hafod, Swansea, SA1 2EN, United Kingdom Telephone +44 (0)1792 455175 Fax +44 (0)1792 455176 e-mail address: sales@gltexports.com web site: www.zeta-alarms.co.uk LASD2 Manual (CE) – Issue 10.0 Part No. 09-0104-10...
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