Macurco™ GD-2B Combustible Gas Detector User Instructions
Contents
1. GAS __DETECTION d Macurco GD 2B Combustible Gas Detector User Instructions a E Ed VOT PAII Important These User Instructions are to be provided to the homeowner end user upon product installation Each person installing or using this equipment must read and understand the information in these User Instructions before use Installation of this equipment by untrained or unqualified persons or use that is not in accordance with these User Instructions may adversely affect product performance and result in sickness or death For proper use see User Instructions or call Macurco Technical Service GENERAL SAFETY INFORMATION INTENDED USE The GD 2B is a low voltage 9 32VDC 12 24VAC electronic detector of combustible heating type gases The GD 2B is designed for connection to Fire Alarm Burglary Control Panels Alarm control panels that work on 12 or 24 VDC can provide battery backup to the GD 2B detectors This combustible gas detector has been designed for methane natural gas and propane LP gas It is NOT designed to detect smoke fire or carbon monoxide LIST OF WARNINGS AND CAUTIONS e Each person using this equipment must read and understand the information in these User Instructions before use Use of this equipment by untrained or unqualified persons or use that is not in accordance with these User Instructions may adversely affect product performance and result in sickness or death e Use only for monitoring the2. TEST Once the unit is fully operational the green light is on steady test the unit by directing gas from an unlighted butane cigarette lighter into the detector through one of the vent holes It will be necessary to hold the lighter valve open for several seconds The red light ALARM will turn on the alarm relay switches and any devices connected should activate The detector should be tested regularly by using gas from an unlit cigarette lighter as detailed above CLEANING The GD 2B should be cleaned using the soft brush attachment of your vacuum cleaner The GD 2B should be tested after cleaning to ensure the unit is operating normally 11 SENSOR POISONS The gas sensing tip in the detector is designed with extreme sensitivity to the environment As a result the sensing function of the tip may deteriorate if it is exposed to a direct spray from aerosols such as paints silicone vapors etc or to a high density of corrosive gases such as hydrogen sulfide sulfur dioxide for an extended period of time LIMITED WARRANTY The Macurco GD 2B Combustible Gas Detector is warranted to be free from defective material and workmanship for a period of two 2 years from the date of manufacture stamped on the unit If any component becomes defective during the warranty period it will be replaced or repaired free of charge if the unit is returned in accordance with the instructions below This warranty does not apply to units that have be
3. arranty Do not cover or obstruct visual alarm LED Doing so may adversely affect product performance and result in sickness or death 10 MAINTENANCE The GD 2B does not require regular maintenance The unit uses a self purging semi conductor sensor that has a long life expectancy All service and repair of the GD 2B are to be performed by Macurco Macurco does not sanction any third party repair facilities Do not disassemble unit or attempt to repair or modify any component of this instrument This instrument contains no user serviceable parts and substitution of components may impair intrinsic safety which may adversely affect product performance and result in sickness or death TESTING The GD 2B should be tested monthly by pushing the TEST RESET switch see TEST RESET switch section Normally this will be the only test required for the GD 2B and is the recommended way to test the unit or units after installation All GD 2B units are factory calibrated and 100 tested for proper operation The unit also has the ability to automatically self test and does so every 2 1 2 minute cycle If the unit detects an improper voltage or inoperable component it will default into Trouble mode See TROUBLE INDICATOR section Check that the GD 2B status indicator light is illuminated GREEN continuously If not do not proceed with the tests Though there is no field calibration procedure for this unit there is an optional gas test procedure GAS
4. ause an alarm are alcohol ammonia cleaning solvents paint thinner gasoline vapors and aerosol propellants Aerosol cans such as hair spray usually contain a combustible gas Always make sure that there is adequate ventilation when you use these products Proper location not in kitchens or bathrooms will minimize alarms due to normal use of household products RESET SILENCE SWITCH The switch on the front of the GD 2B labeled TEST RESET performs four functions 1 A short press of the button less than 5 seconds will place the unit into self test mode with no alarm relay activation The buzzer will sound for two complete alarm cycles the LED will turn red for 5 seconds and then it will alternate between green and amber every second while the self test executes About a minute after entering in self test mode software will simulate an alarm condition When this happens the LED turns red and the buzzer will sound two complete alarm cycles The unit will then return to normal operation 2 Pressing and holding the button will cause the buzzer to sound for two complete alarm cycles and LED turns red for 5 seconds and then to solid amber for 30 seconds The alarm relay is activated during the 30 seconds while LED is solid amber Button can be released once the solid amber is displayed 30 seconds after entering self test mode the alarm relay will turn off and the LED will alternate between green and amber every second while the self test ex
5. e heating type gases that has been calibrated for methane natural gas and propane LP gas The GD 2B is designed for connection to Fire Alarm Burglary Control Panels The GD 2B has a SPST Alarm relay for connection to control panels or other devices The GD 2B does NOT detect carbon monoxide The GD 2B has an optional internal audible sounder FEATURES e DESIGNED TO MEET UL STANDARD 2075 FOR THE STANDARD FOR SAFETY FOR GAS AND VAPOR DETECTOR AND SENSORS e SENSITIVITY TESTED BASED ON UL 1484 STANDARD FOR RESIDENTIAL GAS DETECTORS DETECTS HEATING GASES PROPANE LP NATURAL GAS METHANE SPST ALARM AND TROUBLE RELAYS CAN BE SELF RESTORING OR LATCHING ELECTRONIC SENSORS NO MAINTENANCE OR RECALIBRATION TEMPERATURE COMPENSATED SIMPLE INSTALLATION AND OPERATION SUPERVISED SENSOR SPECIFICATIONS Size 3 1 8 X 5 1 8 X 1 3 4 inch 7 94 x 13 02 x 4 4 cm SHIPPING WEIGHT 0 54 pound VOLTAGE 9 32VDC 12 24VAC Current non alarm 40 mA 12 VDC 20 mA 24 VDC 34 mA 12 VAC 17 mA 24 VAC Current in alarm 56 mA 12 VDC 28 mA 24 VDC 46 mA 12 VAC 23 mA 24 VAC COLOR White SENSOR MAINTENANCE Not required ALARM RELAY RATING SPST 100mA 40VDC TROUBLE RELAY SPST 100mA 40VDC OPERATING TEMPERATURE RANGE 32 to 120 F ALARM SET POINT Per UL 1484 25 LEL INSTALLATION AND OPERATING INSTRUCTIONS The following instructions are intended to serve as a guideline for the use of the Macurco GD 2B Combustib
6. e GD 2B is intended for installation in buildings in non hazardous locations such as residences retail stores office buildings and institutional buildings A N WARNING Use only for monitoring the gas which the sensor and detector are designed to monitor Failure to do so may result in exposures to gases not detectable and cause sickness or death For proper use see supervisor or User Instructions or call Macurco Technical Service DO NOT USE FOR The GD 2B is NOT intended for use in industrial applications such as refineries chemical plants etc The GD 2B does NOT detect carbon monoxide Do NOT mount the GD 2B in a corner The GD 2B is designed for connection to Fire Alarm Burglary Control Panels Do not connect the GD 2B to Fire Alarm Circuits or Burglar Alarm or other signals The Alarm Control Panel must be dedicated to gas detection or have alarm devices that provide a distinctive alarm for gas detection Do NOT mount the GD 2B in kitchens or bathrooms alcohol s ammonia cleaning solvents paint thinner gasoline vapors and aerosol propellants aerosol cans such as hair spray usually contain a combustible gas may cause nuisance alarms GD 2B may not function effectively below 32 F or above 120 F Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death GENERAL DESCRIPTION The GD 2B is a low voltage 9 32VDC 12 24VAC electronic detector of combustibl
7. eath OPERATION 1 Once the GD 2B is operational ARMED the green light will be on continuously If gas is detected the red LED ALARM turns on and the SPST alarm relay activates to indicate the alarm condition In the configuration as shipped from the factory the GD 2B is self restoring When the air clears of gas the red light turns off and the relay switches to its normal state A jumper on the circuit board can be removed to allow the unit to latch in upon alarm 7 wo A Once latched in power will need to be interrupted to un latch the alarm condition The GD 2B can be modified either before or after installation to have a latching output Locate the blue jumper labeled LATCH IN on the printed circuit board on the left hand side under the buzzer Remove this jumper and the unit will stay in alarm once gas has exceeded the pre set threshold until the power is interrupted In the configuration as shipped from the factory the GD 2B has an internal audible sounder A jumper on the circuit board can be removed to disable the internal audible sounder If the jumper on the circuit board is removed the GD 2B should be connected to a Fire Alarm Burglary Control Panel with an audible device that provides at least 85 DB sound output The GD 2B can be modified either before or after installation to disable the internal audible sounder Locate the blue jumper labeled BUZZER on the printed circuit board on the le
8. ector trouble would be a break in the wiring between the control panel and the GD 2B END OF LIFE INDICATOR Seven years after the GD 2B is installed the end of life signal will be activated indicating that the GD 2B has reached the end of its service life and needs to be replaced The end of life signal will cause an open circuit in the normally closed NC Trouble Relay to provide actuation of the signal circuits The status LED will flash alternate AMBER and OFF every 2 seconds and the GD 2B buzzer will emit a short chirp every 50 seconds if the BUZZER is enabled The end of life buzzer can be silenced for 48 hours by pressing the TEST RESET button The silencing of the buzzer also resets the Trouble Relay to the Normally Closed NC position The silence function will continue to be available for 29 days after the GD 2B initiates an end of life signal After this 29 day period the GD 2B can no longer be silenced and must be replaced ERRORS The GD 2B continuously monitors various internal operating parameters If a problem is found the unit will switch to Trouble mode See TROUBLE INDICATOR section To reset the unit for normal operation press the TEST RESET switch or remove power to the unit wait a few seconds then re apply unit power If this problem persists your detector requires repair contact the alarm panel installer or Macurco Tech Support for advice If repair is required return the unit to manufacturer to comply with w
9. ecutes About a minute after entering self test mode software will simulate an alarm condition When this happens the LED turns red and the buzzer will sound two complete alarm cycles The unit will then return to normal operation 3 If the GD 2B is in an alarm condition due to the detection of combustible gas one push of the switch will cause the alarm buzzer to mute for five minutes After the five minute period if gas is still present the status light will again switch to RED the alarm relay will close and the buzzer will sound If after the five minute period the detected gas level has dropped below 25 LEL the GD 2B unit will reset unless it is latched in See LATCH IN option of OPERATION section 4 If the GD 2B is at the end of its seven year life the TEST RESET switch can be used to temporarily silence the buzzer function See section End of life Indicator TROUBLE INDICATOR Internal failure of the GD 2B will cause an open circuit in the normally closed NC Trouble Relay to provide for actuation of the control panel circuits The status LED will flash AMBER and the GD 2B buzzer will emit a short chirp if the BUZZER is enabled every 50 seconds See ERRORS section The GD 2B microprocessor continuously monitors various detector parameters Failure of the GD 2B s internal power supply or a lack of power to the detector will result in the status light remaining OFF not illuminated In this case the most common cause of det
10. en altered or had repair attempted or that have been subjected to abuse accidental or otherwise The above warranty is in lieu of all other express warranties obligations or liabilities THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED TO A PERIOD OF TWO 2 YEARS Macurco shall not be liable for any incidental or consequential damages for breach of this or any other warranty express or implied arising out of or related to the use of said equipment Manufacturer or its agent s liability shall be limited to replacement or repair as set forth above Buyer s sole and exclusive remedies are return of the goods and repayment of the price or repair and replacement of non conforming goods or parts Manufactured by Aerionics Inc Round Rock Texas Email info aerionicsinc com Phone 1 877 367 7891 Rev 02 07 2013 Aerionics 2013 All rights reserved Macurco is a trademark of Aerionics Inc Gas Detection Experts 12
11. ft hand side under the buzzer Remove this jumper to disable the internal audible sounder In the configuration as shipped from the factory the GD 2B is used with normally open initiating circuits A jumper on the circuit board can be removed to use the GD 2B with normally closed initiating circuits When using the GD 2B with normally closed initiating circuits remove the blue jumper labeled ALARM RELAY on the top side the printed circuit board under the buzzer ALARMS Immediately exit any environment if there is an alarm condition on the detector Failure to A N WARNING do so may result in sickness or death The final alarm is determined by the configuration of the control panel with the GD 2B only switching its relay to actuate the panel Do not connect the GD 2B to Fire Alarm Circuits or Burglar Alarm or other signals The illumination of the red ALARM light on the GD 2B indicates the alarm condition When an alarm occurs immediately evacuate the premises and seek assistance A N WARNING This detector will only indicate the presence of combustible gas at the sensor Combustible gas may be present in other areas Accommodation spaces should be well ventilated when household cleaning supplies or similar contaminants are used 8 In addition to the methane natural gas and propane LP gas that it is designed to detect the GD 2B can also be affected by a broad range of combustible gases Some of these that may c
12. gas which the sensor and detector are designed to monitor Failure to do so may result in exposures to gases not detectable and cause sickness or death For proper use see supervisor or User Instructions or call Macurco Technical Service e GD 2B may not function effectively below 32 F or above 120 F Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death e This detector helps monitor for the presence and concentration level of certain specified airborne gases Misuse may produce an inaccurate reading which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death For proper use see supervisor or User Instructions or call Macurco Technical Service e The GD 2B is not designed to measure compliance with Occupational Safety and Health Administration OSHA commercial or industrial standards When the unit is turned on it performs a self test which activates the audible and or visual alarms If the self test fails or all the alarms do not activate do not use Failure to do so may adversely affect product performance and result in sickness or death e Immediately exit the environment if there is an alarm condition on the detector Failure to do so may result in sickness or death 2 e This detector will only indicate the presence of combustible gas at the sensor Combustible gas may be present in othe
13. l In the configuration as shipped from the factory the GD 2B is used with normally open initiating circuits A jumper on the circuit board can be removed to use the GD 2B with normally closed initiating circuits When using the GD 2B with normally closed initiating circuits remove the blue jumper labeled ALARM RELAY on the top side the printed circuit board under the buzzer 7 See wiring diagram for information below on connections of the GD 2B Macurco recommends a minimum of 22 AWG wire for runs up to 200 ft 6096 m and 18 AWG wire for longer runs 8 See wiring diagram and information below for connections of the GD 2B Typical connection of two GD 2B detectors to an alarm control panel N O initiating YT0 circuit Battery backed 12 or 24 Of Current limit at 0 2 A fi each GD 28 9 The alarm control panel zone inputs must be terminated with end of line resistors E 0 L R which are provided with the panel The GD 2B has an optional internal audible sounder and should be connected to a Fire Alarm Burglary Control Panel with an audible device that provides at least 85 DB sound output See BUZZER option in the OPERATION section A N WARNING When the unit is turned on it performs a self test which activates the audible and or visual alarms If the self test fails or all the alarms do not activate do not use Failure to do so may adversely affect product performance and result in sickness or d
14. le Gas Detector It is not to be considered all inclusive nor is it intended to replace the policy and procedures for each facility A N WARNING This detector helps monitor for the presence and concentration level of certain specified airborne gases Misuse may produce an inaccurate reading which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death For proper use see supervisor or User Instructions or call Macurco Technical Service LOCATION A GD 2B is usually located in each room except kitchens or bathrooms where there are gas appliances or through which gas pipes pass Do NOT mount the GD 2B in a corner Do NOT mount the GD 2B in kitchens or bathrooms alcohols ammonia cleaning solvents paint thinner gasoline vapors and aerosol propellants aerosol cans such as hair spray usually contain a combustible gas may cause alarms Do NOT mount the GD 2B where the normal ambient This product is intended for use in ordinary indoor locations of family living units and office workspaces 5 A N WARNING The GD 2B is not designed to measure compliance with Occupational Safety and Health Administration OSHA commercial or industrial standards INSTALLATION 1 If the gas used is natural gas methane mount the GD 2B on a wall about one foot down from the ceiling If the gas used is propane LP mount the GD 2B on a wall or column one foot above the floo
15. r Use the same spacing as for smoke detectors 30 foot centers 900 square feet per detector As shipped the GD 2B faceplate is mounted on the enclosure s rear housing component This enclosure configuration allows the unit to be surface mounted flush on a wall Wiring is routed through an access area on the base of the rear housing A thin mid plate enclosure component is also supplied with the GD 2B Using the supplied screws this mid plate component is used to mount the GD 2B on a 2 x 4 inch 5 08cm x 10 16 cm switch box single gang or handy provided by the installer The GD 2B s faceplate component with the detector attached is then mounted on the mid plate component Electrical connections to the GD 2B are made via the supplied six conductor pigtail cable The pigtail cable is first connected to the control panel wiring by means of wire nuts refer to the diagrams for proper pigtail wiring The pigtail cable s connector then snaps into the mating connector on the back of the GD 2B detector allowing easy installation and replacement of the GD 2B For proper detector operation ensure that the GD 2B is connected to a continuous source of power not controlled by a wall switch The GD 2B current draw figures represent worst case conditions and will not vary as the applied DC voltage varies The alarm control panel zone inputs must be terminated with end of line resistors E 0 L R which are provided with the pane
16. r areas Accommodation spaces should be well ventilated when household cleaning supplies or similar contaminants are used e Do not cover or obstruct visual alarm LED Doing so may adversely affect product performance and result in sickness or death e Do not disassemble unit or attempt to repair or modify any component of this detector This detector contains no user serviceable parts and substitution of components may adversely affect product performance and result in sickness or death CAUTION e Avoid the use of harsh cleaning materials abrasives and other organic solvents Such materials may permanently scratch the surfaces damage the sensor labels or instrument housing e f you have any doubts about the applicability of the equipment to your job situation consult an industrial hygienist or call Macurco Technical Service USE INSTRUCTIONS AND LIMITATIONS A N WARNING Each person using this equipment must read and understand the information in these User Instructions before use Use of this equipment by untrained or unqualified persons or use that is not in accordance with these User Instructions may adversely affect product performance and result in sickness or death USE FOR The GD 2B is an electronic detector of combustible heating type gases natural gas and propane designed for connection to alarm control panels It can operate on 12 to 24 VDC power from standby or interruptible panel power or be powered separately Th
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