Astra-Z-4245
Wireless
Optic-Electronic Fire Smoke Detector
Operation Manual
This operation manual is intended for studying the operating
principles, proper use, storage, and maintenance of the
Wireless Optic-Electronic Fire Smoke Detector Astra-Z-4245
(hereinafter referred to as detector) (Figure 1).
The manufacturer reserves the right to make changes to
improve the detector without prior notification. All changes will
be included in the new revision of the operation manual.
List of Abbreviations
:
Astra-Zitadel System
: Astra-Zitadel on-site wireless intrusion /
fire detection and alarm system;
Astra-Zitadel System Control Panel
: Astra-Z-812M, Astra-Z-
8945 ver.A, Astra-8945 Pro or Astra-812 Pro Control Panel
(with connected Astra-Z Wireless Extender);
LT
: Laser Tester Astra-942;
MSS Astra-Z
: Astra-Z Monitoring Software Suite;
MSS Astra Pro
: Astra Pro Monitoring Software Suite.
1
Function
1.1
The detector is intended for detecting
fire accompanied by smoke, forming and
transmitting
«Fire» notification to the Astra-
Zitadel system control panel via radio.
1.2
Power is supplied to the detector from
one or two lithium-thionyl-chloride batteries
(primary and secondary), size AA, voltage
3,6 V.
2
Operating Principle
The detector
’s operating principle is based on registering
infrared radiation (hereinafter IR) that is reflected from smoke
particles in a smoke chamber by a photodetector. Further the
electric signal formed by the photodetector is amplified and
sent to microcontroller in order to analyze the smoke density
value. The microprocessor forms smoke density value and
«Fire» notification in accordance with specified operating
algorithm.
3
Specification
Detector sensitivity, dB/m ........................................ 0.05 to 0.2
Response time, s, max ......................................................... 10
Detection area, m
2
, max ..................................................... 110
Installation height, m, max .................................................... 10
Technical Parameters of Radio Channel
Operating frequency range, MHz .................. 2 400 to 2 483. 5
Number of operating channels at 5 MHz intervals ................ 16
Channel width, MHz ............................................................... 2
Wireless coverage range, line-of-sight, m, min ................... 300
General Technical Parameters
Current consumption, mA, max:
- with radio module OFF .................................................... 0.05
- with radio module ON ....................................................... 105
Battery replacement
indication threshold, V ......................................................... 2.6
Power supply voltage lower threshold (programmed
deactivation threshold retaining
battery discharge indication), V ........................................... 2.1
Technical readiness time, s, max ......................................... 40
Standby mode recovery time, s, max ....................................... 60
Overall dimensions, mm, max:
- diameter ........................................................................... 106
- height ................................................................................. 60
Weight (without battery), kg, max ...................................... 0.13
Primary battery average life time, year, min ........................... 3
Secondary batteries average life time, year, min ..... 5
Operating Conditions
Temperature range,
°
C ..................................... from -30 to +55
Relative air humidity, % ............................... up to 93 at +
40 °C
without moisture condensation
4
Delivery Set
Astra-Z-4245 Wireless
Optic-Electronic Fire Smoke Detector ................................ 1 pcs.
Battery ............................................................................... 2 pcs.
Screw 3.
9×32 ..................................................................... 2 pcs.
Dowel 6×30 ........................................................................ 2 pcs.
Operation Manual ............................................................. 1 copy
5
Structure
Batteries from delivery package are inserted.
Figure 2
5.1
The detector consists of a removable electronic unit and a
base (Figure 2).
5.2
Inside the electronic unit is a smoke chamber, printed
circuit board (PCB) with radio elements, radio module and
batteries.
5.3
Mounted on PCB is a tamper switch (S1 button), which
results in the
«Tampering» notification when the cover is
removed.
5.4
Mounted on PCB are red and white LEDs for detector
operability / wireless network status supervision respectively.
Note
- It is not recommended to disassemble the detector
’s electronic
unit, as this could damage the detector tuning.
6
Notification Types
Table 1: Notifications processed by LEDs and Control Panel
(or MSS interface)
Notification
Type
Red
LED
White
LED
Control
Panel
Standby
mode start
Lights up for
1
to 40
seconds
Not lit
−
Normal
Lights up for
0.2 seconds
one time
per
(60±5)
seconds
Not lit
+
Figure 1
