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Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy

DEUTSCH

ENGLISH

Example 2: With Bends :

All pipes are Metric 25mm or Imperial 3/4” (27.6mm). All sample
holes are 3mm, with 6mm end hole.

* Estimated Values

ASPIRATING SYSTEM CONFIGURATION

Set out below are some examples of maximum length pipe
configurations that can be used with an A300 unit fitted with
the 7251 sensor. It should be possible to adapt these
examples for shorter pipe run systems; however some
specific applications will have specific considerations that
must be taken into account, and local standards may also
apply.

The default size for sample holes is 3mm, and the end hole
is 6mm. Ensure that no hole is less than 100mm from a
bend or ‘T’ piece

Table 6 shows the maximum allowable pipe lengths for
CEA 4022 compliance. In the examples shown below,
which fulfill the requirements of this table, the fire alarm
threshold, set at the control panel, should be at the 7251
laser sensor sensitivity level 1 (most sensitive).

For short to mid range application, it is recommended that
the fan speed for the A300E is kept at a default setting of 5
(this will be suitable in many circumstances). The primary
effect of changing the fan speed will be to increase or
decrease the transport time.

Default settings are programmed into the detector for the
high and low flow limits. It should not normally be
necessary to change these settings.

NOTE

If using a sensor other than the 7251 Laser, see section 3.1
Sensors Certified for use with the A300 in the
Appendices.

Table 6: A300E Series Pipe Installation Limits

The following figures apply to System Sensor A310E / A320E
detectors fitted with 7251 sensors

A310E Single Channel System

Example 1:

Aspirating

Smoke

Detector

25mm Pipe Diameter with 3mm Sampling Holes

Height From

Ground 1.5 m

Riser Height

1.0 m

Ceiling Height

2.5 m

Pipe Length

(Including Riser

and Bends)

100 m

First Hole 4.0 m from Riser

6mm End Hole

46.5m

42.5m

10m

Top View

(9 Holes)

(8 Holes)

Aspirating

Smoke

Detector

25mm Pipe Diameter with 3mm Sampling Holes

Height From

Ground 1.5 m

6mm

End Hole

Riser Height

1.0 m

Ceiling Height

2.5 m

Pipe Length

(Including Riser)

100 m

First Hole 4.0 m from Riser

DETECTOR

A310E

A320E

SENSITIVITY ALARM LEVEL

(set at the panel)

FAN SPEED

SINGLE PIPE PER INLET -
Length (Per Pipe/Inlet) Metres

100

Max Number of Holes (Per Pipe)

SINGLE ‘T’ (2 PIPES) PER INLET -
Max Length (Per Pipe) Metres

100

50*

Max Number of Holes (Per Pipe)

Pipe

No.

Hole

Fan

Alarm

Length

of 3mm

Spacing

Speed

Level

(m)

Holes

(m)

100

5.3

Pipe

No.

Hole

Fan

Alarm

Length

of 3mm

Spacing

Speed

Level

(m)

Holes

(m)

100

5.25

Содержание A310E

Страница 1: ...e 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 hole...

Страница 2: ...re 2 CapillaryTube Sample Holes End Cap The end of the pipe should be terminated with an end cap having a central hole typically 6mm in diameter If the end cap is not used then practically no air will be drawn through the side holes Without a hole in the end cap the contributions from the side holes will tend to be very unbalanced Bends Bends are either 45 or 90 degrees For the 90 degree bends it ...

Страница 3: ... Figure 4 A300E SERIESTerminal Layout ASPIRATING SYSTEM CHANNEL 2 FAULT CONTACTS A320E DUAL CHANNEL UNIT ONLY NO COM NC NO COM NC EXTERNAL POWER SUPPLY TO ASPIRATING SYSTEM ASPIRATING SYSTEM CHANNEL 1 FAULT CONTACTS BOTH A310E AND A320E 24VDC 0VDC FUSE LOOP IN LOOP IN LOOP OUT LOOP OUT Sensor Connection The loop terminals are linked via a ribbon cable to the terminals mounted on the front display ...

Страница 4: ...rrect wiring to the device or base LOOP IN LOOP IN LOOP OUT LOOP OUT Sensor Arrangement 1 See figure 5 Two analogue addressable sensors are wired through the aspirating unit Loop connections are made to the terminal block on the A300E main PCB Note This configuration can increase the loop impedance by up to one Ohm If this is likely to cause a problem use Sensor Arrangement 2 below MAIN PCB DISPLA...

Страница 5: ...logue addressable sensors are wired through the aspirating unit Loop connections are made to the terminal block on the A300E main PCB Figure 30 Wiring Configuration 1 with Isolator Bases A300E ASPIRATING SYSTEM ENCLOSURE DISPLAY PCB MAIN PCB SENSOR 2 SENSOR 1 LOOP IN LOOP IN LOOP OUT LOOP OUT Sensor Arrangement 2 with Isolator Bases See Figure 40 The analogue sensors are connected directly to the ...

Страница 6: ...th channels of the A320E is sufficient within the system see Figure 60 If the wiring and module must remain within the aspirating unit an M503ME micro module can be used in place of the M210E 47K R 47K R 47K R Figure 50 Suggested Wiring for A310E A320E Using M210E M220E Module A300E ASPIRATING SYSTEM ENCLOSURE DISPLAY PCB MAIN PCB SENSOR 2 SENSOR 1 EXTERNAL PSU 24V EXTERNAL PSU 0V M210E OR M220E I...

Страница 7: ... AIRFLOW SPEED BAR GRAPH POSITION FOR SECOND SENSOR IF REQURIED AIRFLOW INDICATOR OK HIGH LOW FAN FAULT A320E ASPIRATING SYSTEM LAYOUT Figure 7b Display Functions Dual ChannelVersion POWER GENERAL FAULT AND CODE ENTRY INDICATORS ARE COMMON TO BOTH CHANNELS UNLOCK INSTALL SENSOR HERE INSTALL SECOND SENSOR HERE AIRFLOW INDICATORS AND AIRFLOW SPEED BARGRAPH REFER TO THE CHANNEL IN WHICH THEY ARE LOCA...

Страница 8: ...itivity is selected to accept and cycle to next mode 3 Set High air flow limit Hi LED flashes Press CHANGE to set upper air flow limit as indicated on bar graph Press SELECT once desired high air flow limit is selected to accept and cycle to next mode 4 Set Low air flow limit Lo LED flashes Press CHANGE to set lower air flow limit as indicated on bar graph Press SELECT once desired low air flow li...

Страница 9: ...nnel 1 Bar Graph Sensitivity Channel 1 OK LED Flashes Press CHANGE to set air flow sensitivity as indicated on Channel 1 bar graph Press SELECT once desired sensitivity is selected to accept and cycle to next mode 3 Set Channel 2 Bar Graph Sensitivity Channel 2 OK LED Flashes Press CHANGE to set air flow sensitivity as indicated on Channel 2 bar graph Press SELECT once desired sensitivity is selec...

Страница 10: ...he top of its housing 4 Replace the top cover 5 Test the unit as described above IMPORTANT To ensure maximum efficiency and longevity of the filter when fitting the replacement filter element kit the Coarse filter needs to be fitted first into the pipe ACCESSORIES The following accessories are available to order Model Number Product 02 FL50 Replacement Filter Element Kit 20 LA0015 Replacement Key ...

Страница 11: ... the fan speed will be to increase or decrease the transport time Default settings are programmed into the detector for the high and low flow limits It should not normally be necessary to change these settings NOTE If using a sensor other than the 7251 Laser see section 3 1 Sensors Certified for use with the A300 in the Appendices Table 6 A300E Series Pipe Installation Limits The following figures...

Страница 12: ...oles First Hole 4 0 m from Riser Pipe No Hole Fan Alarm Length of 3mm Spacing Speed Level m Holes m 2 x 100 2 x 18 5 3 9 1 Pipe No Hole Fan Alarm Length of 3mm Spacing Speed Level m Holes m 2 x 100 2 x 18 5 9 1 Aspirating Smoke Detector 6mm End Hole Pipe Lengths Including Riser Up to 100 m Ceiling Height 2 5 m Height From Ground 1 5 m Riser Height 1 0 m 25mm Pipe Diameter with 3mm Sampling Holes 1...

Страница 13: ... of the sampling holes etc In Figure 1 2 1 a room has a single sampling pipe that provides detection for the whole room Aspirating Unit containing detector and fan Fan draws air down pipe system for detector to sample smoke plume rises and enters pipe system through sampling point holes Figure 1 2 1 Single Sampling Pipe In Figure 1 2 2 the same room has a two channel sensor allowing two sampling p...

Страница 14: ...ests 1 5 The Design Process When designing the actual sampling pipe network there are many factors that need to be considered The site must be carefully surveyed and as much information as possible should be gathered 1 5 1 Requirements The first consideration is to precisely ascertain the requirements of the installation Once these have been decided the type of situation can be looked at 1 5 2 Act...

Страница 15: ...5 deg Elbow Large Bore 25mm 02 1005 25 Removable Union Large Bore 25mm 02 1007 25 T Piece 25mm 02 1006 25 End Cap for Large Bore 25mm 02 FLU2 Filter Unit 25mm With Filter Element for Harsh environment 2 2 Common Accessories There are a number of accessories that can be used Model Number Product Description 02 1008 15 Flush Capilary Sampling Point T Piece 1 5m Capillary Tube For use with false ceil...

Страница 16: ...ign of a system The air temperatures at which the room operates must be taken into account If the aspirating pipe network is inside the cold room the following points should be noted 1 The pipes should be suspended or attached further away than usual from the ceiling or wall as these may contract and expand with large changes in air temperature 2 Sampling holes should be drilled on the side of the...

Страница 17: ...ipes Running Parallel to the Roofline Max 10m Max 10m Pipes Run the Length of the Building Parallel to the Roofline Aspirating Detectors Figure 4 4 1 High Roof Example 1 Pipes Running Across theWidth of the Roofline Aspirating Detector Maximum 10m Between Pipes at the Roof Pipes Run theWidth of the Building across the Roofline The second alternative shows the pipes running in parallel along the ro...

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