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Critical Environment Technologies cGas Detector, Installation Manual

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© 2020 All rights reserved. Data subject to change without notice. 

cGas Detector Digital Transmitter  - Installation Manual 

Rev. A | 2020.03

NEED MORE INFORMATION?

This is the

 Installation Manual

 for the cGas Detector Digital Transmitter. If you 

would like it in pdf form, please scan the QR code on the back cover page of this 
booklet or download it from our website:
https://www.critical-environment.com/media/download/manuals/CGAS-D-
Installation-Manual.pdf

There is also an Operation Manual, which includes more information:

•  Adjusting Display Settings
•  Alarm Status, Fault Detection and Communication Failure 

Notifi cations

•  Setting Channel Alarm Setpoints, Direction and Hysteresis
•  Relay Operations
•  Enable/Disable Channels
•  How to Install a Replacement Smart Sensor
•  Calibration
•  Accessories
•  Maintenance
•  Troubleshooting

You can scan the QR code below or download the 

Operation Manual

 from our 

website:
https://www.critical-environment.com/media/download/manuals/CGAS-D-
Operation-Manual.pdf

Summary of Contents for cGas Detector

Page 1: ...Rev A 2020 03 www critical environment com cGas Detector Digital Transmitter Installation Manual...

Page 2: ...ment com media download manuals CGAS D Installation Manual pdf There is also an Operation Manual which includes more information Adjusting Display Settings Alarm Status Fault Detection and Communicati...

Page 3: ...es 11 3 INSTRUMENT SPECIFICATIONS 12 3 1 Technical Speci cations 12 3 2 Enclosure Dimensions 16 4 SENSOR SPECIFICATIONS 17 4 1 Single Channel Gas Sensor Options 17 4 2 Dual Channel Gas Sensor Options...

Page 4: ...6 7 2 Wiring the Relay Smart Baord models with Option RLY 33 7 BASIC SYSTEM OPERATION 33 7 1 Power up and Warm up Process from Factory 33 7 2 Navigating the Menu Structure 34 7 3 Accessing the Menu wi...

Page 5: ...5 Rev A 2020 03 cGas Detector Digital Transmitter Installation Manual 8 3 Con guring BACnet Settings 44 8 3 1 Change BACnet MAC Address 44 8 3 2 Change BACnet Instance ID 45 8 3 3 Change BACnet Baud...

Page 6: ...ali ed electrician or factory trained technician and according to instructions indicated in this manual This instrument should be inspected and calibrated regularly by a quali ed and trained technicia...

Page 7: ...red in any way If it is determined within 90 days of purchase that a sensor is malfunctioning or unable to remain calibrated due to no fault of its placement or treatment the instrument may be sent ba...

Page 8: ...ontact our o ce for an RMA All returned goods must be accompanied with an RMA number If CETCI is to do the repair work you may send the instrument prepaid to Attention Service Department Critical Envi...

Page 9: ...om or arising out of the repair or modi cation of this equipment by a party other than CETCI service technicians or by operation or use of the equipment other than in accordance with the printed instr...

Page 10: ...Canada Inc Unit 145 7391 Vantage Way Delta BC V4G 1M3 Canada Toll Free 1 877 940 8741 Telephone 1 604 940 8741 Fax 1 604 940 8745 Email marketing cetci com Website www critical environment com In no...

Page 11: ...ion combinations to meet speci c application requirements 24 volt DC or ground referenced AC power 4 conductor shielded network wiring daisy chain In eld upgradable rmware con guration via USB connect...

Page 12: ...CO sensor The UL2075 approved CO sensor is not available with RH and Temperature sensor Option RLY is a 1 SPDT dry contact relay rated 30 volts 2 amps max Available with all single channel con guratio...

Page 13: ...Display Option LT Optional OLED display for improved usability in low temperature applications 2 line by 16 character USB Port Internal port for USB memory stick connection for eld con guration rmware...

Page 14: ...ev 14 RS 485 BACnet MS TP ANSI ASHRAE standard 135 BACnet Communication protocol 135 2012 Baud Rate 76 800 default Base Address 270 default MAC Address 100 default Parity no parity Stop bits 1 Data bi...

Page 15: ...CAL FIRE HAZARD ONLY LA CERTIFICATION ACNOR COUVRE UNIQUEMENT LES RISQUES DE CHOC ELECTRIQUE ET D INCENDIE D ORIGINE ELECTRIQUE Conforms to CSA C22 2 No 205 12 UL508 Edition 18 2018 Conforms to EMC Di...

Page 16: ...Rev A 2020 03 3 2 Enclosure Dimensions Above dimensions are shown with optional splash guard Without splash guard thickness is 71 mm 2 8 in The area required for enclosure door to be open 90 degrees...

Page 17: ...lO2 CGAS D CLO2 0 1 ppm 2 yrs Ethylene C2 H4 CGAS D C2H4 0 200 ppm 2 yrs Ethylene Oxide C2 H4 O CGAS D EETO 0 20 ppm 2 yrs Fluorine F2 CGAS D F2 0 1 ppm 2 yrs Formaldehyde CH2 O CGAS D CH2O 0 5 ppm 2...

Page 18: ...A 0 2 000 ppm 5 yrs Refrigerant R402A CGAS D SR402A 0 2 000 ppm 5 yrs Refrigerant R404A CGAS D SR404A 0 2 000 ppm 5 yrs Refrigerant R407A CGAS D SR407C 0 2 000 ppm 5 yrs Refrigerant R410A CGAS D SR410...

Page 19: ...rs Part Numbers Range Lifespan Carbon Dioxide CO2 CGAS D CO2 5K 0 5 000 ppm 8 yrs CGAS D CO2 5 0 5 vol 4 2 Dual Channel Gas Sensor Options Two Internal Electrochemical Sensors Part Number Range Lifesp...

Page 20: ...onoxide sensor UL2075 Approved NOTE Carbon Monoxide detectors that are ordered with Option RHT can not use UL2075 approved CO sensor 4 3 Calibration Extending Firmware CEF and Sensor Aging The cGas De...

Page 21: ...er Installation Manual 5 INSTRUMENT FEATURES 5 1 Exterior Enclosure NUMBER FEATURE FUNCTION Door Hinge Secures door to base and allows easy opening and closing Display LCD display standard display Sen...

Page 22: ...nctions using buttons inside the enclosure Arrow up Enter Arrow down RS 485 Communication Terminals Pluggable power and signal terminal for connection to controller and next transmitter USB Connection...

Page 23: ...Temperature affects calibration It is important to ensure the gas is at the appropriate temperature during calibration If the sensor is being used in an extreme temperature range calibration should be...

Page 24: ...sensor still does not respond as it should after a successful calibration it probably requires replacing 6 2 General Safety Warnings The cGas Detector is intended for indoor use permanently mounted a...

Page 25: ...he door of the enclosure can be removed if absolutely necessary to facilitate installation of the base but it is not recommended on this version Extreme care and caution must be exercised when removin...

Page 26: ...ure base One in the rear of the base and one on the bottom edge of the base Refer to Section 6 6 Enclosure Mounting Components The clearance from the PCA to the base enclosure is 12 7 mm in Do not use...

Page 27: ...way from normal foot tra c and high energy equipment 2 Con rm the devices are properly grounded using conduit and shielded cabling 3 Inform operators and technical staff working in the surrounding are...

Page 28: ...haust 1 2 1 8 m above the oor 4 6 ft above the oor Nitrogen Dioxide NO2 Diesel engine exhaust Ammonia NH3 Commercial ice rinks Compressor rooms Near the ceiling Chlorine Cl2 Commercial swimming pools...

Page 29: ...0 32 in 8 or 4 mm screw 6 6 2 Enclosure Bottom NUMBER FEATURE Door Hinge Conduit Entry Points 12 7 mm 1 2 in diameter 6 7 Wiring Connections The cGas Detector transmitter is a low voltage powered devi...

Page 30: ...ne digital device to the next digital device A goes to A B goes to B GND goes to GND 24V goes to 24V Do not mix up the individual wires or the two groups of four wires An end of line jumper must be in...

Page 31: ...Digital Transmitter Installation Manual Wiring Example 4 Wire VDC If the cGas Detector is being connected to a QCC or FCS the supply voltage will either be supplied by the QCC or FCS and any addition...

Page 32: ...Remote Power Supply may be required CETCI highly suggests 4 conductor 16 AWG shielded stranded wire cable types such as AlphaWire 79220 AlphaWire 5534 Belden 9954 or equivalent Do not use solid core...

Page 33: ...M Common terminals With this wiring the connection will be open under normal low gas concentration conditions When the gas concentration rises to the con gured alarm point or if there is a power failu...

Page 34: ...al and the length of time the gas alarms exist is dependent upon the length of time since the unit was last powered up and the state of the environment it is installed in Refer to Section 6 1 Special...

Page 35: ...an edit the menu line item After entering and con rming a value you can either Exit the menu or press the UP button to move to the next item in that menu All menus are circular and will bring you back...

Page 36: ...pe Brightness Display Line 1 Display Line 2 2012 Alarms Menu Selected Channel Selected Alarm Level Set Alarm Setpoint Set Alarm Direction Ascending Descending Set Alarm Hysteresis 3022 Con g Menu Sele...

Page 37: ...e UP button and ENTER button Enter Password 3032 Press ENTER to access the Calibrate Menu Calibrate Menu Press Enter In the Selected Channel menu if Temperature is not displayed press ENTER and use th...

Page 38: ...ature offset value is a number of degrees and the Humidity offset value is a percentage both in either direction of 0 From the main display press ENTER Enter passcode 3032 using the UP button and ENTE...

Page 39: ...the connection and con gured responses between the cGas Detector and the DDC BAS You can do the same for relative humidity and temperature if the RHT option is installed From the main display press EN...

Page 40: ...o stop the test press the UP or DOWN button Test another reading value or press ENTER to Exit 7 6 2 Test Relay models with Option RLY installed NOTE Before testing the relay notify the appropriate peo...

Page 41: ...ctor can be changed from Modbus to BACnet or vice versa in the eld 8 1 Changing Digital Communication Type in the Field When the communication type is changed from to Modbus or BACnet the device will...

Page 42: ...ings 8 2 Con guring Modbus Settings If a complete system controller with digital transmitters and peripherals is ordered from the factory it will be shipped precon gured with the appropriate Modbus se...

Page 43: ...asic Menu Basic Menu Press Enter The Comm Type displayed should be MODBUS Press the UP button until you see Comm MAC Comm Type MODBUS Comm MAC 000 Press ENTER Use the UP or DOWN buttons to change the...

Page 44: ...00 Select the preferred baud rate by pressing ENTER to save Press the UP buttons and ENTER to Exit 8 2 3 Modbus Holding Registers If you have speci c requirements have any questions or require clari c...

Page 45: ...Press ENTER Use the UP button to change the numeric value Move to the next digit by pressing ENTER When nished press ENTER to con rm and Exit Comm MAC 111 Confirm 111 N Y 8 3 2 Change BACnet Instance...

Page 46: ...n rm and Exit Instance ID 0270111 Confirm 270111 N Y 8 3 3 Change BACnet Baud Rate All devices on the same BACnet network must have the same baud rate The default BACnet baud rate is 76 800 From the m...

Page 47: ...ACnet Testing Laboratories BTL certi cation for the CGAS Detector Family upon passing the BTL requirements for the BACnet Smart Actuator B SA designation For a copy of the BACnet Protocol Implementati...

Page 48: ...s correct especially the A and B lines to make sure they are not swapped between devices on the network Check the Modbus ID Each device must have a unique ID assigned to it Device cannot be seen by th...

Page 49: ...2020 All rights reserved Data subject to change without notice 49 Rev A 2020 03 cGas Detector Digital Transmitter Installation Manual NOTES...

Page 50: ...50 2020 All rights reserved Data subject to change without notice cGas Detector Digital Transmitter Installation Manual Rev A 2020 03 NOTES...

Page 51: ...2020 All rights reserved Data subject to change without notice 51 Rev A 2020 03 cGas Detector Digital Transmitter Installation Manual NOTES...

Page 52: ...145 7391 Vantage Way Delta BC V4G 1M3 Canada Tel 1 604 940 8741 Toll Free 1 877 940 8741 www critical environment com CGAS D 20200309 Rev A 2020 All rights reserved Data subject to change without not...

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