teko Astra-Z-4245 Operation Manual

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-Z­8945 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 Astra­Zitadel 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, m2, 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

Primary+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

Rev. 4245-v3_2_en

2

Fire

Lights up one

time for 10
seconds when

the smoke
density
reaches the
activation
threshold

Not lit

+

Detector failure

Triple blink
every 25
seconds

Not lit

+

Powering up

Not lit

Any

Primary battery
failure

Not lit

Any

+

Secondary
battery failure*

Not lit

Any

+

Power failure

Triple blink
every 25
seconds

Not lit

+

Tampering/
Tamper recovery

Lights up

one time for

0.2 seconds

Not lit

+

Network search

Not lit

Blinks with
frequency of

5Hz for 1 to
60 seconds

−

No network

Not lit

Double blink
every 25
seconds

−

Radio module
failure

Not lit

Triple blink
every 25
seconds

+

+: notification issued; –: notification not issued
*: with secondary battery installed

Notes
1 The «Power failure» notification is processed by the red LED

if both batteries are discharged or if one of the batteries is
missing and the second battery is discharged.
2 If «Primary battery failure» notification appears, replace
the battery within two months.

7 Operating Modes

The detector provides for «Registration» and «Test» modes.

7.1 «Registration» mode is intended for registering the

detector in the wireless network in which it supposed to
operate (see p.8.3).

7.2 «Test» mode is intended for testing electronic and

optical circuits of the detector.
The mode is activated upon a command from the control panel
or LT. Within 5 seconds after the command receipt, the
detector should issue «Test fire» notification (in case of
detector normal operation) or «Detector failure» or «Power
failure» notifications (in case of corresponding failures).

8 Pre-Starting Procedure

8.1 After transportation in conditions differing from those of

operation, keep the detector unpacked for 4 hours in the
expected operating conditions.

8.2 Running Detector. Replacing Batteries

WARNING! Lithium-thionyl-chloride batteries have an effect of

«passivation» to provide the possibility of long-term storage. To
provide battery normal operation after long-term storage, hold
an «activation» procedure.

Step-1

Turn the detector’s electronic unit
counter-clockwise. Remove the
electronic unit from the detector
base.

Step-2

When using one battery to switch the detector ON, insert
the Primary battery.
Note – When using two batteries, it is recommended to
insert the Secondary battery first, and then the Primary
battery. The Secondary battery can be inserted up to 1
minute after inserting the Primary battery.
To replace the battery, remove the old one, and after at
least 30 seconds insert the new one.
The red LED lights up for 1 to 40 seconds – the battery
activation and checking period.
If after 40 seconds the red LED flashes triply every 25
seconds, re-activate the battery by removing it, and after at
least 30 seconds reinserting it.

Warning! If two batteries have been inserted, replace
both batteries.

8.3 Registering the Detector in the Wireless
Network

Detector registration procedure is required for detector
identification in the wireless network in which it is supposed
to operate.

Step-1

According to Astra-Zitadel System Control Panel`s

Operating Manual * perform the following procedure:

1) Install Software ** (MSS Astra-Z, Pconf-Z or MSS Astra

Pro) intended for configuring Control Panel.

2) Create wireless network

Step-2

Perform par.8.2

Step-3

Switch the control panel to Wireless device registration
mode by the method described in the appropriate Control
Panel Operating manual *

Step-4

Initiate detector registration procedure by one of 2
methods:

a) using the LT (step-5);
b) using the Reg plug and the tamper switch (step-6)

WARNING!
Avoid to initiate registration procedure on several
detectors simultaneous

Step-5

Initiating Detector
Registration Using the LT:

- Press the lower button on the
LT and hold until a beam
appears.

- Direct the laser beam at the
detector LED.

- Irradiate the LED for 1 second.
The detector red LED lights up for 2 seconds, and then

the detector switches to wireless network search mode and
the detector white LED blinks at a frequency of 5 Hz.

No more than 10 m

At least 0.1 m