DEGA 05L-2-AC-x-yL User manual
ISO 9001:2008
Quality Management Systems
Systéme de Qualité
www.sgs.com
Content
Page 2 / For your protection
Page 3 / Technical data and information
Page 4 / Operational and external conditions (CSN 33 2000-5-51)
Page 4 / Accessories
Page 5 / Terminology
Page 6 / Basic types
Page 9 / Description of the product
Page 11/ Installation, assembly and disassembly of the detector
Assembly of the detector
Disassembly of the detector
Sending the detector for the CALIBRATION
Page 16/ Operation of the compact detector
Page 17/ Functions of the compact detector
Switching on the detector
The idle mode
The gas alarm status
The„PEL“ status of the gas alarm
Failure
External gas detector (DEGA NBx-yL II)
Detection of critical temperatures
Detection of ooding
Connection to the emergency/solenoid valve
Status of the required service intervention (calibration)
Page 19/ Operation
Page 19/ Maintenance
Page 20/ General warranty terms and conditions
DEGA 05L-2-AC-x-yL
Compact Gas Detector
INSTRUCTION
MANUAL
Reproduction of this manual, or any part thereof, in any form, without the prior written permission of DEGA CZ s.r.o.
is prohibited.
DEGA CZ s.r.o. reserves the right to alter the specications of the hardware and software described in this manual at
any time and without prior notice.
DEGA CZ s.r.o. bears no liable for any damage resulting from the use of this device!
PAGE 2
FOR YOUR PROTECTION
Watch out for static electricity
Prior to installing or handling the product, ensure that you do not have an accumulated static charge. Touch a grounded
metal object to trigger the discharge of any accumulated electric charge. Otherwise the product could suer damage.
In the event of any failure of the equipment unplug it immediately
If you notice an unusual odour or smoke emanating from the product, unplug it from the mains and from all peripherals.
Continued operation could result in injury or property damage. After disconnecting the product deliver it to an authorised
service centre or the manufacturer for inspection.
Do not use the product in the vicinity of ammable gases or
in areas where there is a potential occurrence of these gases.
Do not use electronic equipment in the vicinity of ammable gases; this could potentially cause a re or an explosion.The
product is not designed for use in industrial or commercial spaces nor in„Ex“ hazardous areas.
Do not disassemble the product and ensure against its contact with water
Contact with internal components of the product may cause an electric shock. In the case of any failure refer the servicing
of the product exclusively to a certied service centre. Contact with water can create a short circuit in the product and
consequent damage to property or personal injury.
Use cables of the appropriate types
To ensure compliance with the parameters of the product, to connect the product to other devices or to the power supply
utilise exclusively the cables recommended and described in the Technical Data and Information section.
Risk of electric shocks
Prior to handling this product, ensure that it is not connected to the mains supply
Dispose of used products and transmitter sensors with respect for the environment
Transmitter sensors contain hazardous substances; dispose of them in accordance with the applicable regulations for the
protection of environment.
Use the transmitter only with the appropriate certied DEGA products
The device is certied and is technically and functionally suitable for authentic„DEGA“ accessories. In the event that the
device is utilised with other products the manufacturer shall not liable for any damages that this may cause.
Undertake regular functional checks and calibration of the transmitter
Carry out regular„CALIBRATION“ (i.e. setting the detection limits, checking the responsiveness of the sensor, checking the
functionality of the transmitter) and„OPERABILITY AND FUNCTIONAL CHECKS“ of the entire detection system (excitation
of the transmitters together with the subsequent optical and acoustic alarms, ventilator start-up, the shutdown of the
equipment, etc.). Calibration and operability and functional checks should be carried out only at certied service centres
with a valid certicate of competency, or by the manufacturer.
Note: The compact detector continuously and automatically checks its calibration period, i.e. the period of validity of its calibration.
Following the expiration of 12 months since the last calibration (i.e. the maximum calibration period) „ERROR“ LED begins to ash
on the detector and the detector must then be calibrated immediately at a certied service centre that holds a valid certicate of
competency or by the manufacturer. Following the expiration of 18 months from the most recent calibration, for security reasons the
detector switches into failure mode and the detector begins ashing long„ERROR“ ashes.
PAGE 3
TECHNICAL DATA AND INFORMATION
Supply voltage: 230 V/50 Hz
Input: 10 VA
Ingress protection: IP 43
Power-supply cable for the DEGA05 compact detector: 3x1,5mm2
Cable for connecting the DEGA ZC II ood sensor: 4x1mm2 (max.100m) or UTP cat. 5e
Cable for connecting the DEGA NBx-yL II external transmitter: 3x1mm2 (max. 600 m)
3x1,5mm2 (max. 1100 m)
Note: In case of the need to connecting transmitters to a compact
detector over a greater distance, please contact the manufacturer.
Output: 5x relay- a potential-free switching contact
Relay contact ampacity: resistance load: 8 A / 250 V/50Hz
8 A / 30 VDC
inductive load: 1,6 A / 30 VDC
Dimensions: (W x H x D) 225 x125 x57 mm
Weight: 0,6 kg
Degree of accuracy: 2,5
Type of sensor: catalytic, electrochemical, infrared, semiconductor
Expected operational life of the sensor in a clean environment:
catalytic (3-6 years)
electrochemical (1-3 years)
infrared (at least 5 years or more)
semiconductor (3-6 years)
Response time (T90):
DEGA05-2-AC-x-EL max. 180 seconds (in accordance with the type of sensor)
DEGA05-2-AC-x-CL max. 20 seconds
DEGA05-2-AC-x-IL max. 15 seconds
DEGA05-2-AC-x-SL max. 30 seconds
Warm-up time:
DEGA05-2-AC-x-EL max. 1 minute
DEGA05-2-AC-x-CL 30 seconds
DEGA05-2-AC-x-IL 20 seconds
DEGA05-2-AC-x-SL max. 3 minutes
Stabilisation period:
DEGA05-2-AC-x-EL max. 2 hours (5 days when not supplying power)
DEGA05-2-AC-x-CL max. 1 hours (5 days when not supplying power)
DEGA05-2-AC-x-IL max. 2 hours (5 days when not supplying power)
DEGA05-2-AC-x-SL max. 6 hours (5 days when not supplying power)
Shelf life: up to one year in an environment that does not contain any corrosive substances at temperature from -10 °C to +40 °C
with relative humidity of up to 90% at an atmospheric pressure between 86 and 108 kPa.
PAGE 4
OPERATIONAL AND EXTERNAL CONDITIONS ( CSN 33 2000-5-51 )
ACCESSORIES
Operating temperature range: -20°C to +60°C
Relative humidity of the ambient air: max.95%
Altitude: AC1
Air pressure: 86 – 108 kPa
The oxygen content in the air: 18% – 21%
The occurrence of humidity: AD1
(AD2, with the exception of direction perpendicular to the sensor)
The incidence of solid foreign bodies: AE1
The occurrence of corrosive or polluting substances: AF3, in direction towards the transmitter AF1
Vibration: AH1
The types of materials processed or stored: AR2, max. 2,0 m/s
(a ow directed towards the transmitter sensor is not acceptable)
Working environment: BE1 – non-explosive atmosphere
BNV (CSN EN 60079–10)
The transmitter is not intended to be used for detection and sensing in industrial and commercial areas requiring ATEX certication
nor for areas with potentially explosive atmospheres („Ex“). For these areas, we recommend transmitters of the DEGA NSX type.
DEGA NBx-yL II - External additional gas transmitter
One additional transmitter of any type from the DEGA NBX-yL II product line can be connected to the compact detector.
DEGA Zc II - External ood sensor
The sensor is located on the oor in the location of the application and reacts to the ooding of the contacts with water.
DEGA05-Tc - Internal sensor for the critical temperature
The sensor for the critical temperature is located directly inside the detector.
The factory setting of the alarm for the critical temperature: 45 °C
(in accordance with CSN 07 0703 - Boiler rooms with gaseous fuels)
Note: The setting of the alarm value for the critical temperature can be altered in accordance with the customer’s requirements; see
„Operation of the compact detector“
DEGA05-V - Circuit for controlling the emergency valves
When using the detector for switching on an emergency valve (e.g. the DEGA HV-DNX) it is necessary to order this circuit with the
basic version.
PAGE 5
TERMINOLOGY
The DEGA05-2-AC-x-yL compact gas detector
is located in the area monitored and is designed to protect the health and property of individuals in an environment in which there
exists the possibility of the occurrence of a critical situation based on the accumulation of ammable or toxic gases. The detector
includes a sensor that reads the current value of the gas concentration in the ambient air and shows this value on the display. This
also provides the possibility for optical and acoustic signalling and for switching relay contacts that correspond to the specic
status.
LEL: Lower Explosive Limit of gas - the lowest volume concentration of gas in the atmosphere at which an explosion might occur
PEL: Permissible Exposure Limit – the maximum average concentration of gases to which an employee may be exposed during one
shift (typically of 8 or 12 hours)
The Transmitter: is a part of the detector that is placed in the area monitored and reports the detected concentration of the media
as an output signal
The Sensor: is a part of the transmitter that reacts to the presence of gas (vapour) in the air.
The DEGA 05L-2-AC-x-yL detector is available with the following sensors:
(whereby x= the symbol for a specic gas, y= the symbol for the type of sensor)
DEGA05-2-AC-x-EL with an electrochemical sensor
This operates on the principle of measurement of the change in the electrical parameters of electrodes placed in electrolyte, due to
the redox reaction of detected gas on their surface. These sensors have a favourable selectivity and the capacity to detect very low
concentrations of gases. In the DEGA systems they are utilised primarily for the detection of toxic gases.
DEGA05-2-AC-x-CL with a catalytic sensor (Pelistor)
These work on the principle of catalytic combustion – the gas concentration is measured in accordance with the amount of heat
released during a controlled combustion reaction. The reaction is prompted by a suitable temperature and the presence of a
catalyst. These sensors can be used for the detection of a wide range of combustible gases. The sensors are characterised by their
fast response, long life and high degree of stability. For their proper functioning they require at least 10% of the oxygen in the air.
In an environment containing corrosive substances (alkaline and/or acidic compounds, silicon, sulphur, lead, etc.) the degradation
of the sensor is accelerated.
DEGA05-2-AC-x-IL with an infrared sensor (IR)
The highest-quality detecting method, which works on the principle of infrared spectroscopy. These sensors excel in the high
level of their selectivity and their resistance in environments containing corrosive substances and, under ideal conditions, their
theoretically unlimited operating life.
DEGA05-2-AC-x-SL with a semiconductor sensor
The least expensive method of sensing. They work on the principle of the measurement of the change in the electrical conductivity
of semiconductors that occurs in the event of a change in the concentration of the gas detected. Its advantages are its long
operating life when it is used in a clean environment and also the wide range of models available for dierent types of gases and
vapours. Its disadvantages are its low degree of selectivity (a lesser ability to distinguish between the dierent types of gases in the
mixture) and in environments containing corrosive substances (alkaline and acidic compounds, silicones, sulphur compounds, etc.)
an accelerated degradation of the sensor takes place.
PAGE 6
BASIC TYPES
Identication system of the transmitter: DEGA 05L
Gas transmitter DEGA 05L-2-AC-x-yL
The product type (DEGA 05L)
2-level detection
Power supply 230 V AC
The type of gas detected
A type of sensor with a linear output
DEGA05L-2-AC-x-CL (Catalytic sensor)
The type of sensor Detected gas Measuring range Standard alarm setting on the controller
DEGA05-2-AC-M-CL
Methane (CH4)
/ Natural Gas (CH4)
/ CNG (CH4)
/ Biogas (CH4)
0 – 100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-P-CL
Butane (C4H10)
/ LPG (C4H10)
/ Propane-butane (C4H10)
0 – 100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-H-CL Hydrogen (H2) 0-100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-A-CL Amonia (NH3) 0-100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-B-CL Gasoline 0-100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-L-CL
Other ammable and explosive gases
and vapours, in accordance with the
selectivity of the sensor
0-100% LEL level 1: 10% LEL, level 2: 20% LEL
Note: LEL - Lower Explosion Limit
Alarm settings on the controller can be freely selected (within the measuring range) in accordance with the customer’s requirements
DEGA05L-2-AC-x-CL (Semiconductor sensor)
The type of sensor Detected gas Measuring range Standard alarm setting on the controller
DEGA05-2-AC-C-SL Carbon monoxide (CO) 0 - 10.000 ppm level 1: 80 ppm, level 2: 130 ppm
DEGA05-2-AC-M-SL
Methane (CH4)
/ Natural Gas (CH4)
/ CNG (CH4)
/ Biogas (CH4)
0 – 100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-P-SL
Butane (C4H10)
/ LPG (C4H10)
/ Propane-butane (C4H10)
0 – 100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-A-SL Amonia (NH3) 0 -1.000 ppm
(accuracy +/- 50ppm) level 1: 300ppm, level 2: 400 ppm
DEGA05-2-AC-B-SL Gasoline 0-100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-F-SL Freon 100 – 600 ppm level 1: 300ppm, level 2: 600ppm
DEGA05-2-AC-R-SL
Refrigerants:
R401A, R404A, R407C, R32, R410A,
R12, R22
0 – 20.000 ppm In accordance with the type of refrigerant
DEGA05-2-AC-HFO-SL Refrigerant: HFO-1234yf; R1234yf;
2,3,3,3-Tetrauoropropylene 0 – 20.000 ppm level 1: 10 ppm, level 2: 20 ppm
DEGA05-2-AC-H-SL Hydrogen (H2) 0-100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-Y-SL Acetylene (C2H2) 0-100% LEL level 1: 10% LEL, level 2: 20% LEL
DEGA05-2-AC-L-SL
Other ammable and explosive gases
and vapours, in accordance with the
selectivity of the sensor
0-100% LEL
(0 – 1% vol.) level 1: 10% LEL, level 2: 20% LEL
Note: LEL - Lower Explosion Limit
Alarm settings on the controller can be freely selected (within the measuring range) in accordance with the customer’s requirements
PAGE 7
DEGA05L-2-AC-x-EL (Electrochemical sensor)
The type of sensor Detected gas Measuring range Standard alarm setting on the controller
DEGA05-2-AC-C-EL Carbon monoxide (CO) 0 - 300 ppm
(0-1.000ppm)
level 1: 45 ppm, level 2: 130 ppm,
ALARM„PEL“: in accordance with CSN 50291: 120min./30ppm
Application: Detection in residential buildings
If required the„PEL“ ALARM can also be set:
a) in accordance with CSN 73 6058: 30min/87 ppm
Application: Underground Garages
b) in accordance with Government Regulation No. 321/2007:
8 hours/26 ppm
Application: The working environment of employees
DEGA05-2-AC-A-EL Amonia (NH3) 0-50ppm
(0-1000ppm)
level 1: 18 ppm, level 2: 47 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007: 8hod./ 20 ppm
DEGA05-2-AC-CL-EL Chlorine (Cl2) 0 - 20 ppm
level 1: 1 ppm, level 2: 3 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007: 8hod./0,2 ppm
NPK-P: 0,516 ppm
DEGA05-2-AC-O-EL Oxygen (O2) 0-25% vol.
level 1: 18% vol., level 2:15% vol.
If required the„PEL“ ALARM can also be set:
1 st. 23% vol., level 2:25% vol.
DEGA05-2-AC-O3-EL Ozone (O3) 0-5 ppm
(0 - 100 ppm)
level 1: 0,1 ppm, level 2: 0,3 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007: 8hod./0,05 ppm
NPK-P: 01018 ppm
DEGA05-2-AC-HCL-EL Hydrogen chloride (HCl) 0 - 20 ppm
level 1: 7 ppm, level 2: 9,3 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007: 8hod./5,43 ppm
DEGA05-2-AC-H2S-EL Hydrogen sulde (H2S)
0 - 50 ppm
(0-200ppm)
(0-2000ppm)
level 1: 10 ppm, level 2: 13 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007: 8hod./7,1 ppm
DEGA05-2-AC-NO2-EL Nitrogen dioxide (NO2) 0 - 20 ppm
(0 - 1 00 ppm)
level 1: 8 ppm, level 2: 10 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007: 8hod./4,94 ppm
DEGA05-2-AC-NO-EL Nitric oxide (NO) 0 - 250 ppm
(0 - 1 000 ppm)
level 1: 7 ppm, level 2: 10 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007:8hod./7,57 ppm
DEGA05-2-AC-SO2-EL Sulfur dioxide (SO2) 0 - 20 ppm
level 1: 2,5 ppm, level 2: 3,5 ppm
The„PEL“ ALARM in accordance with Government Regulation
No. 321/2007: 8hod./1,91 ppm
DEGA05-2-AC-CH2O-EL Formaldehyde (CH2O) 0 - 10 ppm
(0 - 2000 ppm) level 1: 0,3 ppm, level 2: 0,7 ppm
DEGA05-2-AC-C2H4-EL Ethene (Ethylene) (C2H4) 0 - 10 ppm
(0-1 500 ppm) level 1: 7 ppm, level 2: 10 ppm
DEGA05-2-AC-C2H4O-EL Ethylenoxide (oxirane) (C2H4O)
Acetaldehyd, Vinyl alcohol (ethenol) 0 – 10 ppm level 1: 0,8 ppm, level 2: 1,5 ppm
DEGA05-2-AC-H-EL Hydrogen (H2) 0 - 1000 ppm
(0-4000ppm) level 1: 200 ppm, level 2: 400 ppm
DEGA05-2-AC-HCN-EL Hydrogen cyanide (HCN) 0-50ppm
(0-100ppm) level 1: 5 ppm, level 2: 8,3 ppm
DEGA05-2-AC-PH3-EL Phosphane /phospine (PH3) 0 - 5 ppm
(0 -20 ppm) level 1: 0,1 ppm, level 2: 0,2 ppm
DEGA05-2-AC-SIH4-EL Silane (SiH4) 0 - 50 ppm level 1: 3 ppm, level 2: 5 ppm
DEGA05-2-AC-CLO2-EL Chlorine dioxide (ClO2) 0-1 ppm
(0-50ppm) level 1: 0,1 ppm, level 2: 0,2 ppm
DEGA05-2-AC-BR2-EL Bromine (Br2) 0-20ppm level 1: 0,1 ppm, level 2: 0,2 ppm
DEGA05-2-AC-HBR-EL Hydrobromic acid (HBr) 0-20ppm level 1: 8 ppm, level 2: 9,3 ppm
DEGA05-2-AC-L-EL
Other chemical substances, in
accordance with the customer’s
requirements
In accordance with
the type of sensor In accordance with the chemical substance
Note: LEL - Lower Explosion Limit
Alarm settings on the controller can be freely selected (within the measuring range) in accordance with the customer’s requirements
PAGE 8
DEGA05L-2-AC-x-IL (Infrared sensor)
The type of sensor Detected gas Measuring range Standard alarm setting on the controller
DEGA05-2-AC-CO2-IL Carbon Dioxide (CO2)
/Biogas (CO2)
0 - 5 % vol.
(0-100 % vol.) level 1: 1,0%, level 2: 2,5%
DEGA05-2-AC-M-IL
Methane (CH4)
/ Natural Gas (CH4)
/ CNG (CH4)
/ Biogas (CH4)
0 – 100% LEL
(0-100% vol.) level 1: 10% LEL, level 2:20% LEL
DEGA05-2-AC-PB-IL
Butane (C4H10)
/ LPG (C4H10)
/ Propane-butane (C4H10)
0 – 100% LEL
(0-100% vol.) level 1: 10% LEL, level 2:20% LEL
DEGA05-2-AC-PP-IL Propane (C3H8) 0 – 100% LEL
(0-100% vol.) level 1: 10% LEL, level 2:20% LEL
DEGA05-2-AC-B-IL Gasoline 0-100% LEL
(0-100% vol.) level 1: 10% LEL, level 2:20% LEL
DEGA05-2-AC-N2O-IL Nitrous oxide (N2O) 0 – 1% vol. level 1: 0,5% vol., level 2:1% vol.
DEGA05-2-AC-L-IL
Other ammable and explosive gases
and vapours, in accordance with the
selectivity of the sensor
0-100% LEL
(0-100% vol.) level 1: 10% LEL, level 2:20% LEL
Note: „PEL“ ALARM: Permissible Exposure Limit (PEL) of the chemical substance,
i.e. the maximum permissible value of the time-weighted average (TWA) of the concentration of the gas in air
LEL - Lower Explosion Limit
PAGE 9
DESCRIPTION OF THE PRODUCT
1The upper part containing the electronics
and the sensor
3The green indicator -„POWER“
(LED, signalling the power status)
5The red indicator -„ALARM“
(LED, alarm)
7 Reset button for the acoustic alarm
9 Piezo-buzzer
11 DEGA KD (the mounting plate)
2 The LCD display
4The yellow indicator -„ERROR“
(LED, signalling a fault condition of the transmitter)
6 The measurement channel switch button
8Air holes for the access of the gas to the sensor of the
detector
10 Spanner for the assembly and disassembly of the detector
(It is necessary to remove it from the mounting plate prior to assembly!)
12 Openings for mounting onto the wall
PAGE 10
LCD Display:
1Warning concerning the requisite calibration
3The transmitter currently displayed ***
5The type of gas or substance detected
7 Icon for failure/required service intervention
9 Alarm/error icon for the critical temperature *
2 Alarm/error icon for ooding*
4The level of the gas detection alarm
6 Icon for the exceeding of the maximum average
concentration - TWA **
8Units in which the measuring is conducted
10 Concentration displayed
* This function is activated only in the event of connecting an external DEGA05-Tc temperature sensor / an external DEGA ZcII ood sensor.
** This function is activated only in the event of the detection of toxic gases (e.g. carbon monoxide (CO) etc.).
*** This function is activated only in the event of the connection and programming of an additional transmitter
PAGE 11
INSTALLATION, ASSEMBLY AND DISASSEMBLY OF THE DETECTOR
Included in the delivery is a mounting plate, together with a spanner for its disassembly (DEGA KD).
The compact detector is designed for mounting on the wall at a height in accordance with the gas to be detected with a
recommended deection from the wall surface of ± 15°.
The DEGA 05L-2-AC-C-EL compact detector for the detection of carbon monoxide (CO) should be placed 150-160 cm above the
oor-level. The DEGA 05L-2-AC-M-CL compact detector for the detection of methane (CH4), natural gas, CNG should be placed
just below the ceiling. The DEGA 05L-2-AC-P-CL compact detector for the detection of butane (C4H10) and propane-butane, LPG
should be placed 10-15 cm above the oor-level. Other models of the DEGA05 compact detector should be installed in accordance
with their usage and the properties of the gas to be detected.
Assembly of the compact detector
1. Remove the upper part: place one hand on each side of the device and press upwards with both thumbs on the edges of the
plastic cover over the display. (The locations for the thumbs are indicated by black arrows). Then disconnect the service cable that
connects the upper part with the base.
PAGE 12
3A. Assembly of the detector directly to the wall (without utilising the DEGA KD mounting plate)
The uncovered base can be installed, using a pair of dowels or screws, at the location recommended in accordance with the type
of gas detected.
2. Unscrew the two screws (where the black arrows are) and remove the plastic cover in a direction towards you
PAGE 13
3B. Assembly of the detector on the mounting plate.
Remove the spanner from the central part of the mounting plate and retain it (you will need it for the disassembly of the detector);
using four screws or dowels, attach the mounting plate in accordance with the type of gas detected and install the detector onto
the mounting plate.
PAGE 14
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4. Connect the cables:
1Terminal block for connecting the 230V AC supply
voltage
3Terminal block for connecting the ooding sensor
(DEGA Zc II)
5Relay for level 2 of the alarm
7 The relay for acoustic/optical signalling
9 Terminal block for connecting the additional„DEGA
NBx-yL II“ transmitter
2
Terminal block for connecting the emergency valve
(to be installed only when ordering the„DEGA05-V“)
4Relay for level1 of the alarm
6 The failure relay
8
The temperature relay
(functional only when ordering the„DEGA05-Tc“
internal temperature sensor)
Power supply: AC (connect the phase conductor to one terminal and the neutral conductor to the other
- the sequence of the connection of the wires does not matter)
PE (connecting the protective earthing conductor)
Relay outputs: C (common) NC (normally closed) NO (normally open)
Emergency valve: VA (connecting the coil of the emergency valve) VB (connecting the coil of the emergency valve)
(DEGA HV-DNx)
Flood sensor: +12V (power supply) INA (input A) INB (input B) GND (common)
(DEGA Zc II)
Input of the external transmitter: V+ (power supply )
(DEGA NBx-yL II) S (current input) V (common) PE (connecting the protective earthing conductor)
Note: No accessories can be powered from the compact detector (the power source of the detector is used solely for providing power for
the detector itself and the transmitter connected to it)
PAGE 15
5. After connecting all the cables, t the central part and secure it using two screws.
6. Attach the connector in the upper part and slide it to the central part. The assembly of the compact detector is then completed.
Disassembly of the detector
In the variant that does not require using the mounting plate (DEGA KD)
Disconnect all the cables and then dismantle the transmitter by unscrewing the lower part of the DEGA05 from the wall.
In the variant that requires the utilisation of the mounting plate (DEGA KD)
Disconnect the cables and then insert the dismantling spanner in the lower section of the transmitter, as shown in the diagram, and
unclip the detector from the mounting plate.
Caution: Connecting the 230V/50Hz voltage may be carried out only by a person with the appropriate qualication
for independent work on LV electrical installations. The equipment installed must not be interfered with! There is a
risk of damage to the product or (with the power on) also of an electric shock!
PAGE 16
OPERATION OF THE COMPACT DETECTOR
Sending the detector for CALIBRATION
At least once a year it is necessary to calibrate the detector and, in the case of choosing the calibration of the detector without any
physical intervention in the area of its application, it will be necessary to send the detector to the manufacturer or to an authorised
service centre for calibration. The procedure is as follows:
1. Remove the upper part: place one hand on each side of the device and press upwards with both thumbs on the edges of the
plastic cover over the display. (The locations for the thumbs are indicated by black arrows). Then disconnect the service cable
that connects the upper part with the base.
2. Wrap the part and send it for calibration.
3. Following the delivery of the calibrated part, connect the service cable and slide it to the central part.
4. Subsequently, it is necessary to perform a functional check using a calibration gas to verify all the pertinent functions of the
detector (for example whether a disconnection of the gas supply or a disconnection of the boiler takes place, etc.).
Two buttons are used for the operation of the compact controller; the button and the button.
Switching between the channels displayed (transmitters): using the button it is possible to switch between the occupied
channels.
Resetting the acoustic alarm: press the button thereby deactivating the internal piezo-buzzer for 20 minutes; the “ALARM”
relay switches to the idle mode. If, after 20 minutes, the event for which the acoustic alarm was activated still persists, the sounder
starts-up again and the “ALARM”relay is switched on. It is possible shut down the acoustic alarm 3 times in a row and subsequently it
will no longer be active for the duration of the alarm.
Note: Resetting the acoustic alarm causes only temporary deactivation of the acoustic alarm. The other signalling features (relays
LEVEL1, LEVEL2 etc.) remain functional.
Service mode: If it is necessary to replace the transmitter without announcing failure or alarms, it is possible to„freeze“ the status of
all the relays of the compact controller for up to 60 minutes. This is achieved by pressing the and the buttons for at least
5 seconds. The display then shows only the length of time up to the reactivation of the compact controller. 60 minutes after entering
the service mode the compact controller switches back to normal. If we wish to manually move out of service mode to normal
operation, we press the and buttons again for 5 seconds.
Hold the button for 5 seconds in the service mode to test the functions of the compact controller:
- all signalling elements and display will be illuminated (8 seconds)
- the acoustic alarm will be activated (2 seconds)
- sequential switching of all the relays
Changing the setting of the critical temperature: In the event of the requirement for changing the settings of values 1 and 2 of the
critical temperature, in the service mode press the button for 5 seconds. The level indicating the critical temperature 1 set will
appear on the display. Press to set the temperature lower, pressing to set the temperature in the range of 0-99 °C. Save
the temperature set by pressing the button for 5 seconds.
PAGE 17
FUNCTIONS OF THE COMPACT DETECTOR
SWITCHING ON THE DETECTOR (ON)
After switching on the power supply all the indication features are tested and subsequently the LCD display shows the current
version of the installed rmware. After this sequence, the compact detector counts down the time required for the stabilisation
of the connected transmitters, 20 – 180 s, in accordance with the warm-up time of the individual transmitters. If everything is O.K.,
the detector goes into normal operation and the „ERROR“ relay is switched to the C4 - NO4 contacts position indicating its proper
operation.
Note: Resetting the acoustic alarm causes only temporary deactivation of the acoustic alarm. The other signalling features (relays
LEVEL1, LEVEL2 etc.) remain functional.
IDLE MODE (READY)
The compact detector remains in this mode during most of its operation. The information displayed on the LCD display is related
primarily to the actual sensor that is inside the compact detector. If the external DEGA NBx-yL II transmitter is installed, displaying
data from it, can be achieved by pressing . In the event that the concentration exceeds the maximum level that the sensor
being utilised is able to detect, the„HI“ symbol is displayed on the detector. In the event of concentrations greater than 999, it shows
the symbol„t“ indicating multiples of thousands, e.g. the number 1t1 stands for 1100, or 4t5 stands for 4500 of 99t stands for 99000.
THE GAS ALARM STATUS (i.e. exceeding levels 1-2 of the detection limit)
Should level 1 of concentration be exceeded on the DEGA05-2-AC-x-yL (V) compact detector or the DEGA NBx-yL II external
transmitter, the “ALARM” LED lights up, the “[ALARM1] indication is displayed on the LCD display and the “[LEVEL1] relay will be
switched on. Should level 2 of concentration be exceeded, the “ALARM” LED lights up, the “[ALARM2] indication is displayed on the
LCD display and the “[LEVEL2] relay will be switched on.
Note: By default, levels of alarm (1, 2) of individual gases for individual transmitters are set in accordance with the specications of the
transmitter and they can be altered in accordance with the customer’s requirements.
Note: Acoustic signalling is activated by default when level 2 of alarm is reached. In accordance with the customer’s requirements, this can
also be set to level1.
If the system is expanded with an external sensor (DEGA NBX yL-II), and an ALARM occurs, the concentration value of the
additional sensor / internal sensor is displayed with a higher level of gas alarm.
For example: In a case in which the detection of„CO“ and also„CH4 - Natural Gas“ on one device is necessary the following assembly
is recommended: DEGA 05L-2-AC-- C-EL (V ) + DEGA NBM-CL II.
The„PEL“ STATUS OF THE GAS ALARM
(i.e. exceeding the time-weighted average)
When the TWA concentration is exceeded the icon and ! DANGER ! sign are lit up, together with the displaying
of the code PE, instead of the concentration measured, next to the transmitter (channel) on which the TWA concentration was
exceeded, and the switching on of the “LEVEL4”and the “ALARM” relays and the activation of the internal acoustic alarm.
PEL (in English TWA- Time-weighted Average)
This function is activated only in the case of the detection of toxic gases (e.g. carbon monoxide (CO), etc.)
Note: Levels of “PEL” alarms for individual gases for specic transmitters are set by default in accordance with the specications of the
transmitter and can be adjusted in accordance with the customer’s requirements.
PAGE 18
FAILURE (ERROR)
In the event of any failure of the compact detector or of its accessories the yellow LED„ERROR“ comes on, the„ERROR“ relay switches
to the C3 - NC3 position, the acoustic alarm is activated, the„ALARM“ relay is switched on (by contacts C4 - NO4) and the appropriate
symbol commences ashing on the display:
• In the event of the failure of the DEGA05-2-AC-x-yL (V) compact detector only a symbol ashes on the display.
• In the event of the failure of the internal or externat transmitter a symbol will ash on the display and instead of concentration
value will be a minus symbol
• In the event of a failure of the critical temperature sensor (DEGA05-TcII) the symbol ashes and the icon will lit up
on the display.
• In the event of the failure of the ood sensor (DEGA Zc II) the symbol ashes and the icon will lit up on the display.
EXTERNAL GAS DETECTION TRANSMITTER
One external transmitter of the DEGA NBX-yL II type can be connected to a device, communicating through an analogue 4-20 mA
current loop.
When purchasing a compact detector with an additional transmitter the function of the additional sensor is activated and the
“[CHANNEL]”icon is shown on the display.
DETECTION OF CRITICAL TEMPERATURE (only in the event of the DEGA05-Tc temperature sensor being connected)
The DEGA05-Tc temperature sensor is built into the body of the compact detector and the standard value of the ALARM is set for 45
°C. When exceeding the critical temperature the symbol and ! DANGER ! sign is lit up on the LCD display and the
contact of the [TEMP] relay is switched on.
DETECTION OF FLOODING (only in the event of the DEGA Zc II ood sensor being connected)
The ood sensor is installed external to the compact detector at oor level. In the case of the detection of a leakage the„ALARM“LED
commences ashing, the symbol and ! DANGER ! sign on the LCD display is lit up and the „TEMP“ relay is
switched on.
EMERGENCY/SOLENOID VALVE
Emergency valve
The circuit for controlling emergency valves is designed to control the solenoid emergency valves with a 12 V DC coil of the switching
power of up to 7 VA. The valve is connected by means of a two-wire cable to the terminals marked Va and Vb. A voltage pulse is
transmitted in the following cases: power outage, failure, exceeding level 2 of concentration.
Note: Connect the emergency valve of the DEGA HV-DN15, DEGA HV-DN20 or DEGA HV-DN25 type to the detector.
Solenoid valve
The relay can be controlled using the valves of the “without voltage, closed” type with a 230VAC coil. Connect one wire of the valve
coil to the L terminal of the k1 connector. Connect the other wire to the NO terminal of the k5 connector. Connect the C terminal of
the k5 connector to the N terminal of the k1 connector. Valve closure occurs in the following instances:
Limitations: In this version the detector cannot monitor either the critical temperature nor ooding.
Note: The requirement must be specied in the order.
PAGE 19
OPERATION AND MAINTENANCE
OPERATION
To maintain the proper functioning of the device during its operation it is necessary to pay attention to the fact that the presence of a
high concentration of gas or vapour other than those for which the transmitter is set, can create an alarm, even if the concentration of
monitored gas does not exceed the level set. Due to the wide range of interfering gases or vapours (solvents, exhaust fumes, vapours
from organic substances, disinfectants, etc.) it is not possible to determine a generally permissible concentration of interfering gas;
the data concerning selectivity in relation to certain gases are determined for specic transmitters.Therefore it is recommended, prior
to processing the project documentation, to analyse the air in the area in which the detection system is installed.
The surface of the compact detector may be cleaned with a cloth slightly moistened either with soapy water or with diluted detergent.
MAINTENANCE
If the detector is operated in accordance with the technical conditions, it requires:
a) calibration at least once every 6-12 months (i.e. setting the detection limits, checking the responsiveness of the sensor, checking
the system’s functionality). The precise interval is dependent on the level of contamination of the environment, the degree of accuracy
required and the level of occurrence of the selective gases in the environment.
Calibration should be carried out only by authorised service centres holding a valid certicate of competency or by the manufacturer.
b) „Functional checking“ at least once every 3-12 months. Functional checks are performed utilising the test gas at the
concentration that is intended for it – this must not exceed the limit range of the transmitter. We recommend gases with a certied
1st grade of purity!
Recommendation: For ideal functioning it is recommended to carry out the calibration and the functional checks once every 6
months or the calibration once every 12 months and the functional check once every 3 months.
The means for testing the re alarm transmitters must not be utilised for these checks!
THE STATUS OF THE REQUIRED SERVICE INTERVENTION (CALIBRATION OF TRANSMITTERS)
The compact detector is provided with automatic monitoring of the calibration periods of the gas transmitters.
Following the expiration of 12 months since the last calibration of the internal transmitter or the external sensor the user is alerted to
the necessity of recalibration.This status is displayed by long ashes of„ERROR“ LED, ashing and the
icon. The compact detector remains in operation.
Following the expiration of 18 months from the most recent calibration of the internal transmitter or the external sensor, for security
reasons, the function of the entire detector is blocked. This status is displayed as a blinking „ERROR“ LED, a ashing and the
icon. All the relays are in the C-NO position.
PAGE 20
© 2012 DEGA CZ S.R.O. USER MANUAL VER.: 06DEGA05L201210
GENERAL WARRANTY TERMS AND CONDITIONS
Manufacturer: DEGA CZ s.r.o., K Žižkovu 640/9, 190 00 Prague 9, Czech Republic
Tax ID: CZ 279029 43, Company ID: 279 02943; Telephone (cz) : +420 774 447 660-5, Fax: +420 227 203512
When following the instructions for installation, operation and maintenance, the manufacturer guarantee 24 months from
the date of receipt for the product. Should the product purchased be put into operation by an entity other than the seller, the
warranty period commences from the date that the product is put into operation, provided that the buyer ordered its commissioning
within three weeks of its receipt. The customer expressly acknowledges that during the warranty period that extends beyond the
length of the warranty period that is specied in the Commercial Code (the statutory warranty) s/he can neither require replacement
of the product nor may s/he withdraw from the contract.
When claiming a product defect it is necessary to submit a proof of purchase that contains the following information: name and
surname, name and business name, address and the warranty card, if the buyer received one from the seller. The validity of the
warranty shall not be aected by non-compliance with the obligations related to the issuance of the warranty card.
Claims concerning the product (for a warranty repair only complete devices are accepted) may be led during the warranty
period only with the seller from which it was purchased; subsequently the seller is required to forward the product to an
authorised service centre or to the manufacturer.
A condition for the recognition of the rights under the warranty is the installation of the product having been undertaken by an
authorised person in possession of a valid certicate from the manufacturer.
This warranty is not applicable to:
a product that has not been put into operation by the manufacturer or by a certied employee in possession of a valid
certicate issued by the manufacturer ,
damage caused by re, water, static electricity, power surges in the electric supply or in the public network, accident, improper
use of the product, wear and tear
contamination of the product and its subsequent cleaning,
damage caused by improper installation, any adjustment, modication or improper manner of use inconsistent with the
instruction manual, the technical standards or the applicable safety regulations in the Czech Republic,
damage to the product during transportation caused by improper handling or handling of the product in a manner contrary to
the advice provided in the instruction manual,
DEGA products that have been used in association with other than original DEGA products, including consumables and
accessories,
bearing additional parts or consumables (e.g. a foil label, seal, etc.), that are detrimental to normal wear and tear during
operation, together with wear and tear of the product and its parts caused by their normal use.
Claims regarding a product defect that can be dealt with reasonably quickly and without additional consequences will be
resolved by remedying the defect (repair) or by replacement of the product part , because in such a case it is a contradiction of
the standard norms that the entire product shall be replaced (§ 616, paragraph 4 of the Commercial Code).
The buyer who exercises the right of warranty repair is not entitled to the return of the parts that have been replaced.
The warranty period can be extended for up to 48 months and its validity can be extended beyond the standard length on the
basis of the conclusion of an individual warranty contract. Further information may be obtained through a specic business
meeting.
For the complete version of the general business conditions and of the claims procedure go to www.dega.cz
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