Rielta STZ-RK Installation Manual

WIRELESS FLOOD DETECTOR
Installation Guide

1 Product Overview

1.1 Wireless flood detector «STZ-RK» ver. 1 (hereinafter, the
Detector) is intended for detecting leaks of water from water-supply
pipelines or heating facilities and generating an alarm message
via a two-way communication by the «Rielta-Contact-R» protocol.
The Detector is intended to operate as a component of any control
panel (hereinafter, CP) supporting the wireless exchange protocol
«Rielta-Contact-R».
1.2 Water leaks control is ensured by measurement of an external
resistance between sensor terminals of the Detector.
1.3 Radio signals are exchanged within the 433.05 to 434.79 MHz
frequency range. The transmitter output power does not exceed
10 mW.
1.4 Two operating frequencies: main and reserve are used for the
wireless data exchange. The Detector switches over reserve operating
frequency automatically.
1.5 Radio exchange sessions are initiated by the Detector at a
preset frequency. The frequency settings are 10, 15, 30 sec, 1, 5,
10 min, chosen in the process of the binding procedure. The Detector
transmits alarm messages to the CP immediately.
1.6 The Detector power supply is provided by power supply batteries
placed inside it's case: the main one and the backup one (CR2450).
1.7 The Detector state is displayed by two-color LED indicator.
1.8 The Detector generates and transmits the following messages
via a two-way communication:
- «Norm» – if the external resistance between sensor terminals value
is 200 kΩ or more;
- «Alarm» – if the external resistance between sensor terminals
value is 100 kΩ or less;
- «Tamper» – in the event of case tampering or the Detector removal
from the mounting surface;
- «Main Power Supply Low Battery» – under the main power supply
battery voltage drop below 2.8
- «Backup Power Supply Low Battery» – under the backup power
supply battery voltage drop below 2.8
1.9 The Detector is designed to operate continuously, around the
clock.

2 Features

Table 1
Parameter
Operating temperature, °C
Permissible relative humidity at +25 °С without
moisture condensation up to, %
Ambient class
IP rating
Dimensions, maximum, mm
Weight, maximum, kg
Average service life, not less, years
Operation time upon normal climate conditions* and
preset wireless signal exchange rate 30 sec and
more, months:
- from the main battery, not less:
- from the reserve battery, not less:
* background temperature 15 – 35 °C, relative air humidity
25 – 75%, air pressure 86 – 106 kPa.

3 Scope of Delivery

Each Detector unit package contains the items listed in Table 2.
Table 2
Name
Wireless flood detector «STZ-RK» ver. 1
Screw 3-3х30.016
CR2450 lithium power supply battery
Wireless flood detector «STZ-RK» ver. 1. Installation Guide

4 The Detector Design

The Detector comprises the base with the openable mounting
hole (7) printed circuit board (1) (PCB) installed on the cover. The PCB
comprises the following elements: main power supply battery holder
plate (2), «RESET» contacts (3), backup power supply battery holder
plate (4), sensor terminals (5), tamper contacts (6).
«STZ-RK» ver. 1
V;
-0.4
V.
-0.4
Value
minus 20 ... +50
95
Boreal Climate *
IP65
65 x 55 x 20
0,05
8
36
2
7
а) Base

5 Indication

The Detector has the following indication modes:
- «Binding» procedure LED indication (procedure of logging in the CP);
- «Identification» indication mode – lights up by the relevant command
from CP and remains active during 15 min or until the case is opened;
- LED indication of the Detector state is activated after the Detector
cover is closed and remains active during 15 min under conditions:
- other LED indication types absence;
- alarm «Tamper» message is not generated during this time;
- absence of command from the CP disabling the Detector state
indication.
LED indicator modes are listed in the Table 3.
Table 3
The Detector State
Binding procedure
finished
«Binding» mode
«Identification»
«Alarm»
Radio communication
quality appraising
«Normal»

6 Binding with the CP

«Binding» mode is used for logging the Detector in the CP and service
information exchange.
6.1 Prepare the CP in accordance with CP reference guide.
6.2 Initially install the backup power supply battery to the holder
plate (4) on the PCB, thereupon install the main power supply battery
to the holder plate (2).
6.3 Periodical LED indicator blinking green is evidence of binding
process.
6.4 In case of mentioned above LED indication absence, short-circuit
«RESET» terminals for 2 – 3 sec.
6.5 The time limit for the binding process of the Detector is 100 sec.
To restart the binding procedure, short-circuit «RESET» terminals for
2 – 3 sec.

7 Communication Quality Appraising

7.1 To apprise the radio communication quality it is necessary to
act as follows:
- place initially backup and then main power supply batteries to the
correspondent holder plates;
- set the Detector on the assumed place of installation;
- push and then release case tamper.
7.2 After case tamper releasing the Detector generates case
tamper alarm message, transmits it via radio communication channel
and represents communication quality with CP by LED indication in
accordance with the Table 4.
Table 4
QNT.
LED Indication
1 pc.
Color
1 pc.
Green Three blinks
2 pcs.
Green Two blinks
1 copy
Green
Red Four blinks
*) – «Ladoga BRSS-RK-RTR» or «Ladoga BRSS-RK-RTR», ver. 1
1
5
6
5
b) PCB installed on the cover
Figure 1 – The Detector Design
LED Indication
LED lighting red for
2 – 3 sec
LED blinking green
Alternate LED red and
green alternate blinking
Single-shot LED lights up
red for 4 sec
See sect. «Radio communication quality appraising»
Indication is off
Radio
communication
Mode
quality appraisal
Excellent
Good
Communication
One blink
established
No
communication
2
3
4
Note
The Detector logging in
the CP
on command from the
CP
State indication is on
and «Identification»
indication is off
Recommendations
Install the Detector on this
place
Choose another place
for installation or use a
repeater*)