Subscribe to Our Youtube Channel
Summary of Contents for GDA iR-gas
- Page 1 Operating Manual for iR-gas Refrigerant Gas Detector Ver 9.1.R.4 Copyright Gas Detection Australia Pty. Ltd. 2024...
-
Page 2: Table Of Contents
7 Commissioning 7.1 Initial Commissioning 7.2 Function Checks 7.2.1 Equipment required for Function Checks 7.2.2 Bump Test Conditions 7.2.3 Bump Test Procedure 7.2.4 Failure of Bump Test 7.2.5 Fault Condition Page 2 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... - Page 3 10 Specifications 10.1 General Specifications 10.2 Available Refrigerant Gases 10.2.1 Broadband 10.2.2 Special Order 11 Appendix LED patterns of normal operation. LED patterns for various states. 12 Revision History Page 3 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4...
-
Page 4: Proprietary
Statement The Gas Detection (Australia) iR-gas Series gas detector described in this document is the property of Gas Detection (Australia) Pty Ltd. It is furnished under a license agreement and is to be used only in accordance with the terms of the agreement. -
Page 5: Introduction
The documentation will be in one plastic sleeve if there are multiple units purchased. 3.2.2 Enclosure Types The iR-gas Refrigerant Gas Detector is available in both an “on wall” and “flush” mounted models. The wall mounted model (3100/31010) is more commonly used in plant rooms. The flush mounted model (3160/31060) is used in office spaces and for VRF systems. -
Page 6: Product Description
BMS system to control alarm systems and/or ventilation to warn of gas loss and potential harmful environments. 3.3.2 Description of Operation The iR-gas Refrigerant gas detector is a 3-wire 4-20 milliamp (mA) device with a failsafe volt free relay which energises at a set gas concentration threshold or on fault. -
Page 7: Installation
Observe any regulatory or professional engineering requirements concerning detector quantity and their ● placement. The gas detector MUST be commissioned after being installed to verify its operation. ● Page 7 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 8: Mounting The Enclosures
It must face The iR-gas detector downward if mounted on the horizontal surface to prevent dust and particulate build up. Page 8 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 9: Electrical Connections
Negative supply voltage 0 VDC Electrical connections of Relay connector. Terminal Description Note Normally Open Relay is normally energised. Terminal Description is Common given for No Alarm AND No Fault condition. Normally Closed Page 9 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 10: Cable Shield
Ensure that no earth loops are created. *Not Connected: Prevent loops in the 0V connection. Page 10 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 11: Cable Gland
100 Ω 0 - 2 V 0.4 - 2 V 250 Ω 0 - 5 V 1 - 5 V 500 Ω 0 - 10 V 2 - 10 V Page 11 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 12: Functions
5.2 Mute/Menu/Unlatch Button The iR-gas refrigerant gas detector has two push buttons. One on the front under the mute icon on the product label and the other on the circuit board as shown by the picture below. The push buttons perform the same function. -
Page 13: Configuration Jumpers
To measure the mA output of the sensor, set a Digital Multimeter (DMM) to mA range and connect the leads with alligator clips to the test points. The output can also be measured by placing the DMM in line with the mA O/P signal. Page 13 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 14: Alarm Level Relay Setting
5.5 Alarm Level Relay Setting The alarm relay is set to 250 ppm of refrigerant gas from the GDA factory. If a different alarm level is required to trigger the relay it can be set to any of the following thresholds in the table below:... - Page 15 If readings are present, check with pure nitrogen gas to verify the sensor zero point calibration is accurate. Observe that the detector reading is stable. ● Page 15 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4...
-
Page 16: Commissioning
7 Commissioning Initial Commissioning It is necessary to commission your newly installed iR-gas detectors. Full system commissioning is not covered in this manual as every installation is different. Below is a recommended sequence of checks to ensure correct operation of the detector. -
Page 17: Bump Test Conditions
If the detector fails a bump test then you will need to calibrate the detector as per section 8. ● 7.2.5 Fault Condition The detector will indicate a fault with a flashing magenta LED and a fault sound from the buzzer. Page 17 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 18: Calibration Procedure
Zero point is Nitrogen 5.0 (N2 99.999% volume) or Synthetic Air and the Span point calibration gas of the target gas or of the Cross Calibration gas. Get into the menu (section 8.2.1) and follow the procedures for Zero Calibration (8.4) and Span Calibration ● (8.6). Page 18 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 19: Settings & Calibration Mode Features
8.2 Settings & Calibration Mode Features 8.2.1 Entering the Detectors Settings & Calibration Mode The iR-gas detector has a one button menu system for user settings and calibration. Menu Settings in order of entering the settings mode: 1. Menu Exit Section 8.3... -
Page 20: Zero Point Calibration
Please wait until the minimum time for gassing has passed before attempting to calibrate. Once stable press and hold the button for 1 second to perform the Zero calibration. ● Page 20 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 21: Failed Zero Point Calibration
For example an R22 gas detector will be calibrated with R1234ze, as R22 gas is not importable into Australia. Page 21 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 22: Perform Span Calibration
Once satisfied with the calibration, to exit Calibration mode press the button till the LED flashes blue and ● green with a single short beep then press and hold the button to return to normal operation. Turn off gas and remove the gassing cap. ● Page 22 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 23: Failed Span Point Calibration
The alarm threshold by default, is set to 250 ppm of refrigerant gas from the GDA factory. If a different alarm level is required to trigger the relay it can be set to any of the following thresholds in the table below, or disabled. -
Page 24: Latching
When latching is disabled the alarm will self clear when below the alarm point and hysteresis. And faults will remain for at least two minutes and will clear the fault alarm if the fault condition has been cleared within that time. Page 24 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 25: Led Brightness
User Maintenance It is the recommendation from GDA that the detector has a bump test period in accordance with the building requirements of where it is installed. The minimum service period of 6 months and a recalibration of the Zero and Span point annually with certified calibration gas. -
Page 26: Specifications
8 ppm ~21 ppm 4 ppm Target Gas 1000 Span Calibration Gas R1234ze 1000 ppm R1234ze 1000 ppm R1234ze 1000 ppm R1234ze 1000 ppm R1234ze 1000 ppm R1234ze 1000 ppm Page 26 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 27: General Specifications
-20 to 60 °C Operating Humidity 5 to 95 % RH (non condensing) Operating Pressure 800 to 1150 hPa, Pressure Compensated IP Rating IP40 / IP20 Warranty 12 Months Page 27 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 28: Available Refrigerant Gases
R422d Refrigerant Gas Detector 0-1,000 ppm 4-6 Weeks 3100-R422d-2 310x0-042-2 iR-gas R422d Refrigerant Gas Detector 0-2,000 ppm 4-6 Weeks 3100-R448a 310x0-044-1 iR-gas R448a Refrigerant Gas Detector 0-1,000 ppm 4-6 Weeks Page 28 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... - Page 29 R513a Refrigerant Gas Detector 0-1,000 ppm 4-6 Weeks 3100-R513a-2 310x0-053-2 iR-gas R513a Refrigerant Gas Detector 0-2,000 ppm 4-6 Weeks 3100-SF6 310x0-347-2 iR-gas SF6 Sulphur Hexafluoride Gas Detector 0-2,000 ppm 4-6 Weeks Page 29 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4...
-
Page 30: Appendix
11 Appendix Menu for settings/calibration mode. Page 30 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 31: Led Patterns Of Normal Operation
Gas detected just above blanking window Yellow Yellow to Red proportional to %FS of gas OverRange Fault Gas Detected concentration Gas concentration at full-scale Gas concentration Over Range Magenta Page 31 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... -
Page 32: Revision History
HW: 9.0 SW: 9.0.9.2-3, updated for new software and 31 July 2023 hardware Corrected error in Specifications N2O cross-sensitivity 500 18 Aug, 2023 bbp to 50 bbp. 9.1.R.4 Major update for new hardware. 16 Sep, 2024 Page 32 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4... - Page 33 Gas Detection (Australia) Pty Ltd 07 4613 5111 sales@gasdetect.com.au Suite 1, 218 Anzac Avenue, Harristown QLD 4350 gasdetectionaustralia.com.au Page 33 of 33 | GDA iR-gas Refrigerant Manual Rev 9.1.R.4...
Need help?
Do you have a question about the iR-gas and is the answer not in the manual?
Questions and answers