Critical Environment Technologies CGAS-AP Installation Manual
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Critical Environment Technologies CGAS-AP Installation Manual

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Installation Manual
Rev. C/D | 2023.03
cGas Detector
Indoor Public Spaces
www.critical-environment.com

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Summary of Contents for Critical Environment Technologies CGAS-AP

  • Page 1 Installation Manual Rev. C/D | 2023.03 cGas Detector Indoor Public Spaces www.critical-environment.com...
  • Page 2 Rev. C/D | 2023.03 NEED MORE INFORMATION? This is the Installation Manual for the cGas Detector models CGAS-AP and CGAS-DP for indoor public spaces. If you would like to make sure you have the most current version or want to save it in pdf form,...

  • Page 3: Table Of Contents

    5.1 Front Exterior Enclosure ..............20 5.2 Enclosure with Front Cover Removed ..........21 5.3 Enclosure Bottom................. 22 5.4 CGAS-AP Analog - Interior System Layout ......... 23 5.5 CGAS-DP Digital - Interior System Layout .......... 24 6 INSTALLATION ....................25 6.1 General Safety and Maintenance Warnings ........26...
  • Page 4 F) of Temperature Readings ......45 7.8 Temperature and/or Relative Humidity Offset ........46 7.9 Test Functions ..................48 7.9.1 Test Analog Output (CGAS-AP models)........48 7.9.2 Test Digital Output (CGAS-DP models) ........49 7.9.3 Test Relay and Buzzer (if installed) ..........50 8 TROUBLE SHOOTING ...................51...

  • Page 5: Policies

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual 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 | 2023.03 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

    Should you detect any error or omission in this manual, or should you want to inquire regarding upgrading the device’s firmware, please contact CETCI at the following address: Critical Environment Technologies Canada Inc. Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada Toll Free: +1.877.940.8741...

  • Page 9: Introduction

    MS-TP RS-485 or Modbus® RTU RS-485 output for communicating with a controller, Building Automation System or other control panel. The analog models (CGAS-AP) have one analog output signal or a jumper selectable 0-10 volt, 2-10 volt, etc. output. Both the analog and digital models may be configured with an internal gas sensor or a remote refrigerant sensor (dongle).

  • Page 10: Key Features

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 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 | 2023.03 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 •...

  • Page 12: Instrument Specifications

    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 9 m / 29.5 ft (only available with the CGAS-AP-RD Dongle Cable Length and CGAS-DP-RD models) USER INTERFACE...
  • Page 13 Rev. C/D | 2023.03 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 1 rev 14) RS-485 Stop bits: 1 Data bits: 8 One Linear 4 - 20 mA output or Analog Output (CGAS-AP models) jumper selectable 0-10, 2-10 volts, etc. output Relay & Buzzer 1 SPDT relay rated 30 volts, 2 amp max (Standard and...
  • Page 15 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.

  • Page 16: Enclosure Dimensions

    Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 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: Cgas-Dp Digital - Single Channel Gas Sensors

    0 -2,000 ppm ~ 5 years (internal) Solid State R410A Refrigerant CGAS-AP-SR507A 0 -2,000 ppm ~ 5 years (internal) CGAS-AP-RD + Solid State R410A Refrigerant 0 -2,000 ppm ~ 5 years ESH-B-SR410A (remote dongle) CGAS-AP-RD + Solid State R410A Refrigerant...
  • Page 18 cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 CGAS-DP-CO2-5% Infrared Carbon Dioxide (CO 0 - 5% vol ~ 8 years Electrochemical Carbon CGAS-DP-CO 0 - 200 ppm ~ 6 years Monoxide (CO) Electrochemical CGAS-DP-CH2O 0 - 5 ppm ~ 2 years Formaldehyde (CH CGAS-DP-...

  • Page 19: Cgas-Dp Digital - Dual Channel Gas Sensors

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual CGAS-DP-STVOC Solid State TVOC sensor 0 - 500 ppm ~ 5 years Other Refrigerants may be available upon request. 4.3 CGAS-DP Digital - Dual Channel Sensors PART NUMBER SENSOR RANGE LIFESPAN...

  • Page 20: Rh & Temperature Sensor (Option -Rht)

    For analog CGAS-AP models with an internal gas sensor and the optional RH & Temperature sensor, the analog output default is the gas reading. Because the CGAS-AP is a single channel device (it has only one analog output), the RH and temperature readings are for display purposes only; there is no current output or signal back to a controller or BAS/DDC for RH or temperature readings.

  • Page 21: Enclosure With Front Cover Removed

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual NUMBER FEATURE FUNCTION 2-line by 16 character graphic Display  LCD, user configurable Removable front Pull from bottom and push up to  cover open and remove Vents allows gas diffusion into Sensor Vents and sensor and the screw secures...

  • Page 22: Enclosure Bottom

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 NUMBER FEATURE FUNCTION Allows the interior board system to swing Hinge Assembly out to the left to see the other side to  access push buttons and smart boards 2-line by 16 character graphic LCD, user Display ...

  • Page 23: Cgas-Ap Analog - Interior System Layout

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual NUMBER FEATURE Vents for diffusion of gas over sensor(s)  Screw that secures the front cover  5.4 Analog - Interior System Layout     ...

  • Page 24: Cgas-Dp Digital - Interior System Layout

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 TB1 Wiring Pluggable terminal for Power & signal  Terminal output USB Connection For firmware and configuration upgrades  For changing analog output from current  J4 Output Jumper to voltage Sockets for smart The gas smart sensor board plugs into...

  • Page 25: Installation

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual RS-485 Pluggable power and signal terminal Communication for connection to controller and next  Terminals transmitter. USB Connection For firmware and configuration upgrades  Termination Network termination resistor. “IN” position ...

  • Page 26: General Safety And Maintenance Warnings

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 A bump test will help you determine if a sensor requires calibration. If the sensor still does not respond as it should after a successful calibration, it probably requires replacing.

  • Page 27: Mounting The Transmitter

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual This device may interfere with pacemakers. Modern pacemakers have built-in features to protect them from most types of interference produced by other electrical devices you might encounter in your daily routine. If you a have a pacemaker, follow your healthcare provider’s instructions about being around this type of equipment.

  • Page 28: Mounting Height (Sensor Dependent)

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 1. Locate the detectors and controllers out of the way from normal foot traffic and high energy equipment. 2. Inform operators and technical staff working in the surrounding area to be aware of these possible conditions and that two way radios, Bluetooth enabled devices, cell phones and other electrical equipment may interfere with the response of the gas detectors.

  • Page 29: Enclosure Mounting Components

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual Oxygen (O2) breathing zone 5000 12 in (30 cm) from Freon refrigerants 3000 floor target gas TVOCs 3000 dependent For monitoring refrigerant gas with the remote dongle sensor, place the sensor as close to the potential leak area as possible.

  • Page 30: Wiring Connections

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 NUMBER FEATURE Hinge receptacle for interior board.  Mounting Key Holes 8.25 cm / 3.25 in apart  6.5 Wiring Connections The cGas Detector transmitter is a low voltage powered device. Any application of operating voltages higher than indicated in the specification may result in damage.

  • Page 31: Analog Wire Gauge Vs Run Length

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual NOTE: WARRANTY VOID IF SOLID-CORE WIRE IS USED AT THE WIRING TERMINAL STRIP. When using solid core wiring for distribution (in the conduit), use stranded wire pigtails 18 AWG within the enclosure to connect to the circuit board. The rigidity of solid-core wire can pull a soldered terminal strip completely off a circuit board and this will not be covered under warranty.

  • Page 32: Digital Wire Wiring Connections

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 MAXIMUM LOAD MAXIMUM SUPPLY (Wire + WIRE GAUGE CABLE LENGTH VOLTAGE Termination (awg) (feet) Resistor) (ohms) 7,100 592 (assume a 24 VDC 500 Ω termination 10,700 resistor) 20,000 1,200 216 (assume a...
  • Page 33 Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual a short on the circuit board when the door is closed. The wiring shield should be connected to ground only at the controller, have a contiguous connection throughout the network and be left taped and floating at the last device in the network.
  • Page 34 cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 Wiring Example: 4-Wire VAC If the 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: Digital Wire Gauge Vs Run Length

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual 6.5.4 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 36: Wiring Remote (Dongle) Sensor To The Smart Board

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 Cable Length, Size (AWG) and Maximum Number of Sensors for Digital Communication and Power Supply between the cGas Detector and the Controller: Cable Length # of Sensors Meters Feet 0 - 152...

  • Page 37: Wiring The Relay (If Installed)

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual 6.5.6 Wiring the Relay (if installed) The cGas does not provide any power from the relay terminal. The relay is single pole, double throw thereby providing one set of usable dry contacts for the relay.

  • Page 38: Power Draw Consumption Chart

    2.5 watts CGAS-DP-PM 1.6 watts CGAS-AP-RD + ESH-B-SR refrigerant 2.6 watts CGAS-DP-RD + ESH-B-SR refrigerant 2.1 watts CGAS-AP with internal solid state or 2 watts catalytic sensor CGAS-DP with internal solid state or 1.5 watts catalytic sensor CGAS-AP-IR refrigerant sensor 2.3 watts...

  • Page 39: Basic System Operation

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual Add to Peak Power Consumption if installed: CGAS Buzzer + Relay (Option -RBZ) 0.7 watts CGAS Relay (Option -RLY) 0.15 watts 7 BASIC SYSTEM OPERATION The cGas Detector continuously monitors gas concentrations on one configured channel.

  • Page 40: Navigating The Menu Structure

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 All sensors are calibrated in the factory prior to shipping and should not require calibration at the time of a routine installation or replacement. All alarms will be disabled during the system warm-up period. After the warm-up period, the system may exhibit gas alarm condition(s) if one or both of the sensors has not completely stabilized during the warm up period.

  • Page 41: Accessing The Menu With Passcodes

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual 7.3 Accessing the Menu with Passcodes You have to enter a passcode to access the menu. From the normal operation screen, press ENTER to access the password entry screen. Use the UP or DOWN arrow to scroll to the desired number.

  • Page 42: Adjusting Display Brightness

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 current gas level reading for each channel that it has been configured. Pressing the UP or DOWN button allows you to scroll through a series of information screens showing the model name, serial number and firmware version;...

  • Page 43: Alarm Status, Fault Detection And Communication Failure Alerts

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual ********-CO2-******** From the main display, press ENTER. Enter passcode 1014 using the UP button and ENTER button. Enter Password 1014 Press ENTER to access the Display Menu. DisplayMenu Display Type Press Enter...

  • Page 44: Change Analog Output From Milliamps To Voltage

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 7.6 Change Analog Output From Milliamps to Voltage The factory default analog output for the cGas detector is 4-20 mA. The analog output can be changed to voltage in the field. Begin by moving the Output Jumper on jumper bank J4.

  • Page 45: Change Units ( O C Or O F) Of Temperature Readings

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual setting the Set AO Type to Voltage (V), press the UP button to choose Set AO Zero. Press ENTER and change the value using the UP or DOWN and ENTER buttons.

  • Page 46: Temperature And/Or Relative Humidity Offset

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 IMPORTANT: Analog models have one analog output. If an analog model is ordered with Option -RHT, the information is for display purposes only; the one analog output would be used for the gas readings, not the RH and temperature readings.
  • Page 47 Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual The temperature and relative humidity sensors come pre-calibrated from the factory. If you find that the readings on the cGas Detector are higher or lower than another measurement device, you can adjust the reading by setting an offset value so the reading is more accurate.

  • Page 48: Test Functions

    7.9.1 Test Analog Output (CGAS-AP models) For analog cGas Detector models (CGAS-AP), testing the analog output allows you to determine if the installation was successful. Do this by sending a predetermined analog signal to the DDC or BAS to test that the correct signal is being sent out and the configured outcome occurs (ie.

  • Page 49: Test Digital Output (Cgas-Dp Models)

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual 7.9.2 Test Digital Output (CGAS-DP models) For digital models, for each gas channel, you can manually enter a gas reading value of your choice (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.

  • Page 50: Test Relay And Buzzer (If Installed)

    cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 Confirm? Test Reading >10.0 PPM NO2 10.0 PPM NO2 >Y The test will start as soon as you press ENTER to confirm and will remain in the test mode as long as the Test Reading screen remains untouched, up to 5 minutes.

  • Page 51: Trouble Shooting

    Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual and the relay will deactivate. Test RLY: >Untripped When finished, press the UP button and press ENTER on the Exit menu item. Repeat the steps with Left SB Buzzer selected to test the buzzer, if installed. Comm Type Instance ID BACnet...
  • Page 52 cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 rate. • Check to make sure the device has a unique ID assigned to it, which is made up of the MAC ID and the Base ID. •...
  • Page 53 Rev. C/D | 2023.03 cGas Detector for Indoor Public Spaces - Installation Manual Code Description The controller or BAs has not read the current gas concentrations in more than the preset time (default 5 minutes). Could be an address Miss-matched between cGAS and controller / BAS.
  • Page 54 cGas Detector for Indoor Public Spaces - Installation Manual Rev. C/D | 2023.03 cGas detected an error in the smart board Error in reading ID. Use “Write to Sensor” for the indicated Smart Board channel (passcode 3022). Firmware expected a different smart board than what is in the sensor socket.
  • Page 55 Rev. C/D | 2023.03 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-20230320-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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