Macurco GD-2A User Manual
Macurco™ GD-2A
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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TABLE OF CONTENTS
GENERAL SAFETY INFORMATION 4
INTENDED USE 4
LIST OF WARNINGS AND CAUTIONS 4
USE INSTRUCTIONS AND LIMITATIONS 6
USE FOR 6
DO NOT USE FOR 6
GENERAL DESCRIPTION 7
FEATURES 7
SPECIFICATIONS 7
INSTALLATION AND OPERATION INSTRUCTIONS 8
LOCATION 8
INSTALLATION 9
POWER UP 11
OPERATION 12
ALARMS 12
TROUBLE INDICATOR 13
MAINTENANCE 14
TESTING 14
CLEANING 14
SENSOR POISONS 14
WARRANTY 16
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GENERAL SAFETY INFORMATION
INTENDED USE
The GD-2A is a low voltage (12-24 VAC or VDC) electronic detector of combustible, heating type
gases. The GD-2A is designed for connection to Fire Alarm/Burglary Control Panels. NOTE: Any
time the words “Control Panel” or “Alarm Panel” or “Alarm Control Panel” are used in these
instructions, they refer to a Fire Alarm/Burglary Control Panel. Alarm control panels that work on 12
or 24 VDC can provide battery backup to the GD-2A detectors. This combustible gas detector has
been evaluated by ETL for methane (natural gas) and propane (LP) gas. It is NOT designed to
detect smoke, fire or carbon monoxide.
LIST OF WARNINGS AND CAUTIONS
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 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.
GD-2A 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.
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.
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This product is intended for use in ordinary indoor locations of family living units and office
workspaces. The GD-2A is not designed to measure compliance with Occupational Safety and
Health Administration (OSHA) commercial or industrial standards.
When the unit is powered up it performs a self-test during which the green LED light will blink for
a period of one and one half to two minutes. Afterward, the green LED light will turn on
continuously to indicate the unit is in normal operation (ARMED). If the self-test fails or the
green LED light does not turn on continuously do not use. Failure to do so may adversely affect
product performance and result in sickness or death.
Immediately exit the environment if there is an alarm condition on the detector. Failure to do so
may result in sickness or death.
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.
Do not cover or obstruct visual alarm LED. Doing so may adversely affect product performance
and result in sickness or death.
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
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.
If you have any doubts about the applicability of the equipment to your job situation, consult an
industrial hygienist or call Macurco Technical Service.
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