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INSTALLATION AND MAINTENANCE INSTRUCTIONS
A300 SERIES ASPIRATED SMOKE DETECTOR
INTRODUCTION
There are many instances where aspirated smoke
detectors are specified, but where the very high sensitivity
that is normally inherent in these devices is an
unnecessary expense. The A300E Series Aspirated Smoke
Detector provides the perfect solution.
A300E Series aspirating smoke detectors are available in
single or dual channel formats giving a large monitored area
using sampling holes in the place of point detectors.
The A310E single channel unit has a single detection pipe,
and may be used with one smoke sensor, or two sensors
which can be configured for alarm coincidence at the panel
to simulate a 'Double Knock' type operation. (Note: Not
included in VdS approval).
The A320E unit is equipped with two detection pipe
channels and should be fitted with one sensor for each
channel and can thus cover a greater area than the A310E.
A high performance aspirator and flow monitoring circuit
ensure a constant, monitored flow level which can be
displayed on a 10 element bar graph with adjustments for
high and low flow thresholds.
The A300E Series units incorporate in-line air filters to
remove dust particles from the air samples.
A300E Series Aspirating smoke detectors provide closed
loop sampling whereby the exhausted air can be
completely returned to the sampled area making them
particularly suitable for prison cells.
A300E Series Aspirating smoke detectors use one or two
standard intelligent or conventional smoke sensors which
communicate their status directly with the control panel
(Recommended: 7251 Laser Sensor). The A300E monitors
its own systems and uses relay contacts to signal system
faults. If using an intelligent fire system, these contacts
Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy
should be monitored using a separate monitor module to
return the fault.
A300E Series smoke detectors are powered by an external
24Vdc power supply.
With the use of an exhaust pipe, the system is IP65 rated,
allowing its use in many harsh environments, and
applications where regular hosing is performed.
The A300 Series has been independently tested and
certified to CEA4022 and must be installed in strict
compliance with these instructions if the certification
is to be maintained.
SPECIFICATIONS
Number of Sensors:
A310E:1 or 2 sensors. A320E: 2 sensors
(order separately, recommended: 7251 sensor).
Internal Filtration:
2 stage dust particle filter
Flow Monitoring:
Thermal device, high and low thresholds.
10 element bar graph indication.
Relay fault reporting
Supply Voltage:
24VDC (Nominal) 18-30VDC (12W min)
Supply Current:
120 mA - 500 mA depending on fan speed
setting and supply voltage. Maximum
current 350mA @24VDC with no aspirating
pipe (See table 4 for typical currents/fan
speeds)
Maximum Pipe Length: 1 Chan - 100 metres
2 Chan - 2 x 100 metres
Dependant on sensor type and application
IP rating:
IP53 / IP65 optional with exhaust fitted
Operating Temperature: -10°C to 50°C
Operating Humidity:
10 to 95% RH (non-condensing)
Fuse Type/Rating:
'T' European sub-miniature (TR5)
1.25 A Anti-surge
1
CAUTION!
© System Sensor 2008 I56-2634-004EN
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Summary of Contents for System Sensor A310E
- Page 1 A310E:1 or 2 sensors. A320E: 2 sensors channels and should be fitted with one sensor for each (order separately, recommended: 7251 sensor). channel and can thus cover a greater area than the A310E. Internal Filtration: 2 stage dust particle filter Flow Monitoring: Thermal device, high and low thresholds.
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Page 2: Installation
INSTALLATION the hole. Capillary tubes can also be used with the holes as in figure 2. A300E Series Installation The front cover of the A300 will need to be removed to To A300E secure the unit permanently in place. This is done using Ceiling the special key that is supplied, which fits into the screw hole in each corner of the unit. -
Page 3: Power Connection
CHANNEL 2 FAULT CONTACTS (A320E DUAL Figure WF: How to Fit the Ferrite CHANNEL UNIT ONLY) ASPIRATING SYSTEM CHANNEL 1 FAULT CONTACTS (BOTH A310E AND A320E) LOOP IN (+) LOOP IN (-) LOOP OR ZONE CONNECTIONS FROM FIRE DETECTION CONTROL PANEL... -
Page 4: Wiring Configuration
Typical configurations are shown below. For the single channel A310E, either one or two sensors can be used (to simulate “double knock” type applications). For the A320E dual channel system, sensor 1 monitors channel 1, and sensor 2 monitors channel 2. - Page 5 Using Isolator Bases The A310E and A320E may be fitted with isolator bases (B524IEFT-1) if required. The basic configurations used on the previous page are amended below. Sensor Arrangement 1 with Isolator Bases See figure 30. Analogue addressable sensors are wired through the aspirating unit. Loop connections are made to the terminal block on the A300E main PCB.
- Page 6 Fault monitoring of the A300E unit should be reported back to the panel using one of the suggested input module arrangements: For the A310E, a single input M210E module can be used (see Figure 50). For the A320E, a dual input M220E can be used if separate fault reporting for each channel is required (see Figure 50).
- Page 7 A310E ASPIRATING SYSTEM LAYOUT Figure 7a: Display Functions A310E AIRFLOW INDICATOR: OK, HIGH. LOW POWER ON AIRFLOW SPEED (IF FLASHING - VOLTAGE LOW) AIRWAY INLET BAR GRAPH NOT USED UNLOCK NOT USED CODE ENTRY 2 3 4 CODE GENERAL FAULT...
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Page 8: Select Button
2. <SELECT> key momentarily to accept the setting and step to the next function. Note that after the final step, momentarily pressing <SELECT> will wrap back to step one. Table 1: A310E: Set-Up Procedure. Step Mode Indication Function Set Fan Speed “Power On”... - Page 9 Table 7: Flow Delay Settings BARGRAPH LED FLOW INTO FAULT DELAY FLOW OUT OF FAULT DELAY (Seconds) (Seconds) *Factory default setting Note: all timings are approximate Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy © System Sensor 2008 I56-2634-004EN...
- Page 10 Table 3: Typical Flow Sensitivity Settings PIPE SETUP RECOMMENDED FLOW (all 50m lengths unless otherwise stated) FAN SPEEDS SENSITIVITY 13 x 3mm Sampling Holes, 1 x 6mm End Hole 8 x 3mm Sampling Holes, 1 x 6mm End Hole 4 x 3mm Sampling Holes, 1 x 6mm End Hole 1 x 5mm Sampling Hole, 1 x 5mm End Hole 1 x 8mm End Hole 1 x 8mm End Hole (10m Pipe)
- Page 11 The default size for sample holes is 3mm, and the end hole The following figures apply to System Sensor A310E / A320E detectors fitted with 7251 sensors is 6mm. Ensure that no hole is less than 100mm from a bend or ‘T’...
- Page 12 A320E Dual Channel System Example 1: 25mm Pipe Diameter with 3mm Sampling Holes First Hole 4.0 m from Riser Pipe Length Riser Height Pipe Hole Alarm (Including Riser) 1.0 m 2 x 100 m Length of 3mm Spacing Speed Level End Hole Holes Ceiling Height...
- Page 13 In Figure 1.2.1, a room has a single sampling pipe that provides detection for the whole room: Figure 1.3.1 Smoke Dilution Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy © System Sensor 2008 I56-2634-004EN...
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Page 14: The Design Process
1.4 Pipe Construction and Sampling Holes is present should also be taken into account. Single channel System Sensor aspirating detectors have a maximum 1.5.3 Physical Characteristics pipe length of 100 metres. - Page 15 2. Guide to Available Pipe Parts System Sensor offers the following pipe parts: 2.1 Metric 25mm Pipe Options Model Number Product Description 02-0001-25 Large Bore Red Pipe 3m Length, 25mm 02-1001-25 Straight Union Large Bore 25mm 02-1002-25 90 deg. Bend Large Bore 25mm 02-1003-25 45 deg.
- Page 16 3. Using Other Sensors with the A300 If the A300 units are to be used with sensors other than the recommended 7251, please observe the following information: 3.1 Sensors Certified for use with the A300 The following sensors have been independently tested and certified to CEA 4022 for use in the A300 unit.
- Page 17 Vertical sampling points may be needed and the pipe lengths should be considered carefully to ensure reasonable response times. Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy © System Sensor 2008 I56-2634-004EN...
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