3M MACURCO GD-2 User Manual

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Macurco

Combustible Gas Detector GD-2

User Instructions for the 3M Macurco™ Combustible Gas Detector GD-2

Important: These User Instructions are to be provided to the homeowner/end user upon product installation.

3M Occupational Health and

 

Environmental Safety Division

 

3M Center, Building 0235-02-W-70

 

St. Paul, MN 55144-1000

 

Printed in U.S.A.

 

3M and Macurco are trademarks of 3M.

98-0060-0162-6/2

© 2010 3M Company. All rights reserved.

34-8704-8986-0

W WARNING

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 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

The GD-2A is an electronic detector of combustible gases. The GD-2A is designed for connection to UL Listed Fire Alarm/Burglary Control Panels. This combustible gas detector has been evaluated by UL for methane (natural) and propane (LP) gas. It is NOT designed to detect smoke, fire or carbon monoxide. Once the GD-2A is

operational (ARMED) the green light will be on continuously. If gas is detected the red LED (ALARM) turns on and the alarm relay activates to indicate the alarm condition at the control panel. In the configuration, as shipped from the factory, the GD-2A is selfrestoring meaning that when the air clears of gas, the red light turns off and the relay switches to its normal state.

If you suspect a gas leak, alert others and have everyone leave immediately.

Do not light a match. Do not turn lights on or off. Do not use any electrical switches, including a garage door opener. Do not use the telephone, including cell phones. The electrical current in a phone, light or electric switch is enough to spark an explosion.

Go outside to a safe place away from the suspect area and only then call the gas company for help or in an emergency call 911.

Stay away from your home until someone in authority tells you it is safe to return.

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 UL Listed 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 UL Listed 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 UL for methane (natural gas) and propane (LP) gas. It is NOT designed to detect smoke, fire or carbon monoxide.

LIST OF WARNINGS AND CAUTIONS

WWARNING

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 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

GD-2A may not function effectively below 32ºF (0ºC) or above

120ºF (50ºC). 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 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

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 3M at 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

USE INSTRUCTIONS AND LIMITATIONS

W 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-2A 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-2A is intended for installation in buildings in non-hazardous locations such as residences, retail stores, office buildings, and institutional buildings.

W 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 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

DO NOT USE FOR

The GD-2A is NOT intended for use in industrial applications such as refineries, chemical plants, etc. The GD-2A does NOT detect carbon monoxide. Do NOT mount the GD-2A in a corner. The GD-2A is designed for connection to UL Listed Fire Alarm/ Burglary Control Panels. Do not connect the GD-2A 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-2A 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 nuisance alarms.

W WARNING

GD-2A may not function effectively below 32ºF (0°C) or above 120ºF (50°C). Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death.

GENERAL DESCRIPTION

The GD-2A is a low voltage (12-24 VAC or VDC) electronic detector of combustible, heating type gases, that has been evaluated by UL for methane (natural gas) and propane (LP) gas. The GD-2A is designed for connection to UL Listed Fire Alarm/ Burglary Control Panels. The GD-2A has a SPDT Alarm relay, for connection to control panels or other devices. The GD-2A does NOT detect carbon monoxide. The GD-2A does not have an internal audible sounder.

FEATURES

LISTED TO UL STANDARD 2075 FOR THE STANDARD FOR SAFETY FOR GAS AND VAPOR DETECTOR AND SENSORS

SENSITIVITY TESTED BASED ON UL 1484 STANDARD FOR RESIDENTIAL GAS DETECTORS

DETECTS HEATING GASES: PROPANE (LP), NATURAL GAS (METHANE),

SPDT ALARM AND N.C. TROUBLE RELAYS

CAN BE SELF-RESTORING OR LATCHING

ELECTRONIC SENSORS: NO MAINTENANCE OR RECALIBRATION

TEMPERATURE COMPENSATED

SIMPLE INSTALLATION AND OPERATION

SUPERVISED SENSOR

SPECIFICATIONS

SIZE: 4 1/2 X 5 X 1 5/8 inches

SHIPPING WEIGHT: 0.54 pound

VOLTAGE: 12 to 24 VAC or VDC

CURRENT (non-alarm): 45 mA @ 12 VDC, 22 mA @ 24 VDC, 65 mA

@12 VAC, 45 mA @ 24 VAC

CURRENT (in alarm): 70 mA @ 12 VDC, 35 mA @ 24 VDC, 100 mA

@12 VAC, 65 mA @ 24 VAC

COLOR: White

SENSOR MAINTENANCE: Not required

ALARM RELAY: SPDT, 0.125 AMPS, 40V, 3VA

TROUBLE RELAY: SPST (NC), 0.250 AMPS, 40V, 10VA

OPERATING TEMPERATURE RANGE: 32°F to 120°F (0°C to 50°C)

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 3M™ Macurco™ GD-2A Combustible Gas Detector. It is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for each facility.

W 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 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

LOCATION

A GD-2A 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-2A in

a corner. Do NOT mount the GD-2A 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-2A where the normal ambient temperature is below 32°F (0°C) or exceeds 120°F (50°C).

W WARNING

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.

INSTALLATION

1.If the gas used is natural gas (methane) mount the GD-2A on a wall about one foot down from the ceiling. If the gas used is propane (LP), mount the GD-2A on a wall or column one foot above the floor. Use the same spacing as for smoke detectors-30 foot centers, 900 square feet per detector.

2.The three part plastic case allows the GD-2A to be either surface mounted or installed over a four-inch square or double gang electrical box, providing a near flush mount. The GD-2A snap-on front cover will need to be removed before installation. To remove it, lightly pry the front cover off of the mounting plate (middle section) with a coin or flat screwdriver inserted into the vent at the bottom. The cover will snap off exposing the electronics and mounting plate.

3.For flush mount, remove the 2 screws and rear cover from the mounting plate and use the appropriate hole pattern for installation. The four holes toward the center of the mounting plate match the hole pattern of a double gang electrical box. The four holes near the corners match the pattern of a four-inch square box. Mount the GD-2A so the “TOP” marked side of the mounting plate is at the highest side. Snap the front cover back on when finished, making sure that the lights line up with the access holes.

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