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Macurco™ GD-2B Combustible Gas Detector
User Instructions
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.
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Summary of Contents for Macurco GD-2B
- Page 1 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.
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Page 2: List Of Warnings And Cautions
For proper use, see supervisor or User Instructions, or call Macurco Technical Service. GD-2B may not function effectively below 32 F or above 120F. Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death. -
Page 3: Use Instructions And Limitations
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. The GD-2B is intended for installation in buildings in non-hazardous locations such as residences, retail stores, office buildings, and institutional buildings. -
Page 4: General Description
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. -
Page 5: Specifications
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 - 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 alarms. -
Page 6: Installation
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 floor. -
Page 7: Operation
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. - Page 8 4. 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”...
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Page 9: Reset/Silence Switch
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"... -
Page 10: Trouble 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. -
Page 11: Maintenance
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. -
Page 12: Sensor Poisons
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.
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