User Instructions

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acurco™ GD-2A Combustible Gas Detector

ser Instructions

mportant: These User Instructions are to be provided to the

omeowner/end user upon product installation. Each person installing or

sing this equipment must read and understand the information in these

ser Instructions before use. Installation of this equipment by untrained or

nqualified persons, or use that is not in accordance with these User

nstructions may adversely affect product performance and result in

ickness or death. For proper use see User Instructions or call Macurco

echnical Service.

ENERAL SAFETY INFORMATION

NTENDED USE

he GD-2A is a low voltage (12-24 VAC or VDC) electronic detector of

ombustible, heating type gases. The GD-2A is designed for connection to

L Listed Fire Alarm/Burglary Control Panels. NOTE: Any time the words

“

Control Panel” or “Alarm Panel” or “Alarm Control Panel” are used in these

nstructions, they refer to a UL Listed Fire Alarm/Burglary Control Panel.

larm control panels that work on 12 or 24 VDC can provide battery backup

o the GD-2A detectors. This combustible gas detector has been evaluated

y UL for methane (natural gas) and propane (LP) gas. It is NOT designed

o detect smoke, fire or carbon monoxide.

IST OF WARNINGS AND CAUTIONS

•

Each person using this equipment must read and understand the

nformation in these User Instructions before use. Use of this equipment by

ntrained or unqualified persons, or use that is not in accordance with these

ser Instructions, may adversely affect product performance and result in

ickness or death.

•

Use only for monitoring the gas which the sensor and detector are

esigned 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 120°F. 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.

• 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 i

t 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.

USE INSTRUCTIONS AND LIMITATIONS

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.

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-2A is NOT intended for use in industrial applications such as

ref

ineries, 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 ga

s detection. Do NOT mount

the GD-2A 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-2A may not function effectively below 32 °F or above 120°F. Using the detector

outside of this temperature range may adversely affect produc

t 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

• CA

N BE SELF-RESTORING OR LATCHING

• ELECTRONIC SENSORS: NO MAINTENANCE OR RECALIBRATION

• TEMPERATURE COMPENSATED

• SIMPLE INSTALLATION AND OPERATION

• SUPERVISED SENSOR

SPECIFICATIONS

• SIZE: 4 ½ 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 RATING: 0.125 AMPS, 40V, 3VA

• TROUBLE RELAY: 0.250 AMPS, 40V, 10VA

• 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 o

the Macurco GD-2A Combustible Gas Detector. It is not to be considere

all-inclusive, nor is it intended to replace the policy and procedures for eac

facility.

This detector helps monitor for the presence and concentration level of certai

specified airborne gases. Misuse may produce an inaccurate reading, which mean

that higher levels of the gas being monitored may be present and could result i

overexposure and cause sickness or death. For proper use, see supervisor o

User Instructions, or call Macurco Technical Service.

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 NO

mount the GD-2A in a corner. Do NOT mount the GD-2A in kitchens o

bathrooms - alcohol’s, ammonia, cleaning solvents, paint thinner, gasolin

vapors, and aerosol propellants (aerosol cans such as hair spray usuall

contain a combustible gas) may cause alarms. Do NOT mount the GD-2

where the normal ambient

This product is intended for use in ordinary indoor locations of family livin

units and office workspaces.

The GD-2A is not designed to measure compliance with Occupational Safety an

Health Administration (OSHA) commercial or industrial standards.

INSTALLATION

1. If the gas used is natural gas (methane) mount the GD-2A on a wall abou

one foot down from the ceiling. If the gas used is propane (LP), mount th

GD-2A on a wall or column one foot above the floor. Use the same spacin

as for smoke detectors- 30-foot centers, 900 square feet per detector.

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

! WARNING

Summary of content (2 pages)

PAGE 1
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.
PAGE 2
1. the vent at the bottom. The cover will snap off exposing the electronics and mounting plate. 2. 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.