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Summary of Contents for Critical Environment Technologies cGas Detector
- Page 1 Installation Manual Rev. C | D | 2023.07 cGas Detector Indoor Public Spaces Analog Transmitter | Digital Transmitter www.critical-environment.com...
- Page 2 • Calibration • Accessories • Maintenance • Troubleshooting If you would like to view or download the cGas Detector Public Spaces Operation Manual from our website click here The most up-to-date version of the manual will always be on our website.
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Page 3: Table Of Contents
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual TABLE OF CONTENTS 1 POLICIES ....................... 5 1.1 Important Note ..................5 1.2 Warranty Policy ..................6 1.3 Service Policy ..................6 1.4 Copyrights ....................7 1.5 Disclaimer ....................7 1.6 Revisions .................... - Page 4 Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 6.2 Protection Against Electrical Risks ............. 27 6.3 Mounting the Transmitter ..............28 6.3.1 Wet Environment Considerations ..........28 6.3.2 EMI and RF Interference Considerations ........28 6.3.3 Mounting Height (Sensor Dependent) ........
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Page 5: Policies
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual 8 TROUBLE SHOOTING ...................51 1 POLICIES 1.1 Important Note Read and understand this manual prior to using this instrument. Carefully read the warranty policy, service policy, notices, disclaimers and revisions on the following pages. -
Page 6: Warranty Policy
The product is only to be used for the purposes stated in the manual. Critical Environment Technologies is not liable for auxiliary interfaced equipment or consequential damage. -
Page 7: Copyrights
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Repairs are warranted for 90 days after date of shipment (sensors have individual warranties). Should your instrument require non-warranty repair, you may contact the distributor from whom it was purchased or you may contact CETCI directly. -
Page 8: Revisions
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 Under most local electrical codes, low voltage wires cannot be run within the same conduit as line voltage wires. It is CETCI policy that all wiring of our products meet this requirement. -
Page 9: Introduction
Detector for Indoor Public Spaces - Installation Manual 2 INTRODUCTION 2.1 General Description Thank you for purchasing our low profile cGas Detector Transmitter. The cGas Detector is designed for use in publicly occupied spaces: • Where integrated demand controlled ventilation (DCV) is used for air quality and energy savings •... -
Page 10: Key Features
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 ideal for mounting flush with the wall. The remote refrigerant sensor model has a 9m / 29.5 ft dongle cable that is ideal for use in packaged terminal air conditioner (PTAC) applications. - Page 11 Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual *Option RBZ • 1 SPDT dry contact relay, rated 30 volts, 2 amp max with internal buzzer rated 90 dB @ 10 cm / 4 in • Available as an option for cGas models with a 4 series electrochemical sensor, combustible (catalytic) sensor, solid state refrigerant sensor or PID sensor (compatible with Rev C and D main boards and firmware 2.xxx...
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Page 12: Instrument Specifications
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 3 INSTRUMENT SPECIFICATIONS 3.1 Technical Specifications MECHANICAL Polycarbonate, white, low profile Enclosure Weight 400 g / 14 oz 124.9 mm x 124.9 mm x 50 mm Size 4.9 in x 4.9 in x 2.0 in... - Page 13 Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual ELECTRICAL 16 - 30 VDC, 3 W*, Class 2 12 - 27 VAC, 50-60 Hz, 3 VA, Class 2 Power Requirement 24V recommended. Refer to Section 6.5 Wiring Connections *dependent on sensor type.
- Page 14 Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 BACnet® MS/TP ANSI/ASHRAE standard 135 BACnet® Communication protocol: 135-2012 Digital Output Baud Rate: 76,800 (default, configurable) (CGAS-DP models) Base Address: 270 (default, configurable) Communication MAC Address*: 100 (default, configurable) BACnet®...
- Page 15 Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual CERTIFICATION Model: CGAS-DP-XXX S/N: CGASDP1909A0010 Model: CGAS-AP-XXX S/N: CGASAP1909A0010 Rating: 16-30 VDC, 3W, Class 2 12-27 VAC, 50-60 Hz, 3VA, Class 2 CERTIFIED FOR ELECTRIC SHOCK & ELECTRICAL FIRE HAZARD ONLY. LA CERTIFICATION ACNOR COUVRE UNIQUEMENT LES RISQUES DE CHOC ELECTRIQUE ET D’INCENDIE D’ORIGINE ELECTRIQUE.
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Page 16: Enclosure Dimensions
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 3.2 Enclosure Dimensions 4 SENSOR SPECIFICATIONS 4.1 CGAS-AP Analog - Single Channel Sensors PART NUMBER SENSOR RANGE LIFESPAN CGAS-AP-CO2-2K Infrared Carbon Dioxide (CO 0 - 2,000 ppm... - Page 17 Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Electrochemical CGAS-AP-CH2O 0 - 5 ppm ~ 2 years Formaldehyde (CH CGAS-AP- Catalytic Methane (CH 0 - 100% LEL ~ 5 years CCH4-100 sensor Electrochemical Oxygen (O...
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Page 18: Cgas-Dp Digital - Single Channel Gas Sensors
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 4.2 CGAS-DP Digital - Single Channel Sensors PART NUMBER SENSOR RANGE LIFESPAN CGAS-DP-CO2-2K Infrared Carbon Dioxide (CO 0 - 2,000 ppm ~ 8 years CGAS-DP-CO2-5K Infrared Carbon Dioxide (CO... -
Page 19: Cgas-Dp Digital - Dual Channel Gas Sensors
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Solid State R410A Refrigerant CGAS-DP-SR410A 0 -2,000 ppm ~ 5 years (internal) Solid State R410A Refrigerant CGAS-DP-SR507A 0 -2,000 ppm ~ 5 years (internal) CGAS-DP-RD + Solid State R410A Refrigerant... -
Page 20: Rh & Temperature Sensor (Option -Rht)
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 Infrared Carbon Dioxide 0 - 5% vol ~ 8 years CGAS-DP-CO2- ) and 5%-PM Particulate sensor user selectable Electrochemical Carbon 0 - 200 ppm ~ 6 years... -
Page 21: Instrument Features
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual 5 INSTRUMENT FEATURES 5.1 Front Exterior Enclosure NUMBER FEATURE FUNCTION 2-line by 16 character graphic Display LCD, user configurable Removable front Pull from bottom and push up to ... -
Page 22: Enclosure With Front Cover Removed
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 5.2 Enclosure with Front Cover Removed NUMBER FEATURE FUNCTION Allows the interior board system to swing Hinge Assembly out to the left to see the other side to... -
Page 23: Enclosure Bottom
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Slides back and forth in front of the both Calibration Slide sensor openings. Used to calibrate with Adapter the standard calibration adapter plug with O-ring and two zeroing port plugs. -
Page 24: Cgas-Ap Analog - Interior System Layout
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 5.4 CGAS-AP Analog - Interior System Layout NUMBER FEATURE FUNCTION Access menu options and program Programming functions using buttons inside the Buttons enclosure. -
Page 25: Cgas-Dp Digital - Interior System Layout
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Sockets for smart The gas smart sensor board plugs into sensor board the main board using these sockets 5.5 CGAS-DP Digital - Interior System Layout ... -
Page 26: Installation
Options boards 6 INSTALLATION The sensor(s) in the cGas Detector go through a burn in period at our factory prior to shipping so it is ready for operation upon arrival. When installing the cGas Detector for the first time, the sensor may require a long warm up time (approximately 24 to 48 hours) to stabilize and provide accurate readings. -
Page 27: Protection Against Electrical Risks
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual The cGas Detector requires no assembly and virtually no maintenance other than regular calibration of the internal and/or remote sensors. Care should be taken to ensure that water or dust does not enter the enclosure and physically damage the circuit board or internal components. -
Page 28: Mounting The Transmitter
#6-32 screws. A large entry point is provided in back of the enclosure. Refer to Section 6.4 Enclosure Mounting Components. Care should be taken to ensure that the vents of the cGas Detector are not obstructed in order to maximize the sensor’s exposure to the environment being monitored. Do not mount the transmitter upside down, sideways, or flat on the floor or other surface. -
Page 29: Mounting Height (Sensor Dependent)
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual 6.3.3 Mounting Height (Sensor Dependent) The gas detector needs to be mounted where it will best detect the target gas. Some applications may require some adjustments, but generally speaking, the mounting height will depend on the density of the target gas relative to air. -
Page 30: Enclosure Mounting Components
Detector should not exceed 50 ft (15 m). For monitoring refrigerant gas with an internal sensor, place the cGas Detector as close to the potential leak area as possible, taking into consideration that refrigerants are heavier than air and will concentrate closer to the floor and in areas with less air current. -
Page 31: Wiring Connections
If the analog cGas Detector is connected to an FCS, the supply voltage will be supplied by the FCS and if required, additional power can be supplied by RPS- 24VDC Remote Power Supply devices. -
Page 32: Cgas-Ap Analog Wire Gauge Vs Run Length
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 If the analog cGas Detector is being connected to a BAS, DDC or other control panel then either a 24 VDC power supply or 24 VAC Class 2 or better transformer need to be used. -
Page 33: Cgas-Dp Digital Wire Wiring Connections
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual 1,200 216 (assume a 16 VDC 200 Ω termination 1,800 resistor) 3,500 43,200 1,060 (assume a 24 VAC 500 Ω termination 65,500 resistor) 100,000 8,900 316 (assume a 12 VAC 200 Ω... - Page 34 008500 or equivalent. Wiring Example: 4-Wire VAC (CGAS-DP) If the digital cGas Detector is being connected to a BAS, DDC or other control panel then either a 24 VDC power supply or 24 VAC Class 2 or better transformer needs to be used.
- Page 35 Detector for Indoor Public Spaces - Installation Manual Wiring Example: 4-Wire VDC (CGAS-DP) If the digital cGas Detector is being connected to an FCS the supply voltage will be supplied by the FCS and any additional power requirements of the system will be supplied by RPS-24VDC Remote Power Supply devices.
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Page 36: Cgas-Dp Digital Wire Gauge Vs Run Length
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 6.5.4 CGAS-DP Digital Wire Gauge vs Run Length It is important to use the appropriate gauge of wire for the required length of the run to ensure sufficient available voltage, noise reduction, dissipation of heat, and overall optimum performance along the entire wire run. -
Page 37: Wiring Remote (Dongle) Sensor To The Smart Board
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Cable Length, Size (AWG) and Maximum Number of Sensors for Digital Communication and Power Supply between the digital cGas Detector and the Controller: Cable Length # of... -
Page 38: Wiring The Relay (If Installed)
2 amps max and the internal buzzer is rated 90dB @ 10 cm / 4in. The cGas Detector is designed to be fail-safe. Equipment to be controlled by the relay should be wired to the “NC” (Normally closed) and “COM” (Common) terminals. -
Page 39: Power Draw Requirements
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual 6.6 Power Draw Requirements PEAK POWER CONSUMPTION CGAS MODEL CGAS-AP-CO 1.68 watts CGAS-DP-CO 1.2 watts CGAS-AP-CO2 1.8 watts CGAS-DP-CO2 1.5 watts CGAS-AP-PM 2.5 watts CGAS-DP-PM 1.6 watts CGAS-AP-RD + ESH-B-SR refrigerant 2.6 watts... -
Page 40: Basic System Operation
The warm-up period takes between 2 and 5 minutes depending on the gas sensor type. NOTE: The cGas Detector will output a default reading that will be visible on the controller / BAS / DDC system during the warm-up countdown. An accurate, live reading will be output when the unit has finished the warm-up period and the sensor(s) has stabilized. -
Page 41: Navigating The Menu Structure
7.2 Navigating the Menu Structure The three programming pushbuttons inside the enclosure are used to navigate through the cGas Detector menu structure. Refer to Section 5.4 Analog - Interior System Layout or Section 5.5 Digital - Interior System Layout for location photo. -
Page 42: Display Settings
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 NOTE: Service Passcode 2020 is ideal for service technicians or anyone who only needs quick access to Testing and Calibration. The CGAS menu structure is broken into the following 3 levels: •... -
Page 43: Adjusting Display Brightness
Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual name and firmware version; the gas type and AD counts; the communications ID number, gas type and gas level; and temperature and relative humidity (if option -RHT is installed). -
Page 44: Alarm Status, Fault Detection And Communication Failure Alerts
1000 mid 1200 high The cGas Detector has built in fault detection, and in the event of a problem with the measurement circuitry the transmitter will indicate a fault condition on the display. Normal operation will resume once the fault condition has been corrected. -
Page 45: Set The Cgas-Ap Analog Output Type
Analog Output Range. 7.6.2 Set the CGAS-AP Analog Output Range The factory default analog output for the cGas detector is 4-20 mA. The default voltage output value is 0-10 volts. The output range can be changed, for example to 0-20 mA or 2-10 volts. The maximum level of output for voltage is... -
Page 46: Change Units ( O C Or O F) Of Temperature Readings
7.7 Change Units C or F Temperature Readings NOTE: This menu item only applies if the cGas Detector has the -RHT option installed. You can change the factory configured temperature unit type from Celsius to Fahrenheit (or vice versa) very easily. -
Page 47: Temperature And/Or Relative Humidity Offset
>Fahrenheit change to 32 7.8 Temperature and / or Relative Humidity Offset NOTE: This menu item only applies if the cGas Detector has the -RHT option installed. NOTE: Depending on the configuration, the device will show the temperature in either Celsius or Fahrenheit. The units can be changed at any time, refer to Section 7.7 Change Units (... -
Page 48: Test Functions
7.9.1 Test CGAS-AP Analog Output Testing the analog output allows you to determine if the installation was successful. The test forces the cGas Detector to output a predetermined signal to the controller or DDC/BAS to test that the correct signal is being transmitted and the controller responds as configured (ie. -
Page 49: Test Cgas-Dp Digital Output
(within the range of the sensor) that will be sent over the digital network to test the connection and configured 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. -
Page 50: Test Relay And Buzzer (If Installed)
Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 Enter Passcode 2020 Navigate to the Testing parent menu and then to the Selected Channel menu item and press ENTER. Choose Menu >Testing Confirm the correct channel is showing. The list to choose from will depend on how many channels there are and what options are included: •... - Page 51 Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Enter Passcode 2020 Navigate to the Testing parent menu and then to the Selected Relay menu item and press ENTER. Choose Menu >Testing If you want to test the relay, make sure the relay item is chosen. Change the value to the buzzer item if that is what you want to test.
- Page 52 Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 Frequent, unexpected alarm signal sent to BAS/DDC. Check to see if EMI and RF interference is causing the equipment to react this way. Refer to EMI and RF Interference Considerations in the Installation Manual for more information.
- Page 53 Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual Possible cGas Error Codes. List of Possible cGas Error Codes Code Description The controller or BAs has not read the current gas concentrations in more than the preset time (default 5 minutes).
- Page 54 Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.07 Ensure the smart board is seated properly Smart Board and installed on the correct side (left) if a Faults single channel unit. If a power cycle does not resolve this, replace the sensor smart board.
- Page 55 Rev. C/D | 2023.07 cGas Detector for Indoor Public Spaces - Installation Manual NOTES © 2023 All rights reserved. Data subject to change without notice.
- Page 56 SAFER AIR EVERYWHERE. www.critical-enviroment.com CGAS-AP-DP-20230717-Rev-C/D-Installation Unit 145, 7391 Vantage Way, Delta, BC V4G 1M3 Canada Tel: +1.604.940.8741 Toll Free: +1.877.940.8741 © 2023 All rights reserved. Data subject to change without notice.
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