FireAngel NG-9B Manuale utente

User Manual

NG-9B NATURAL GAS ALARM

Detects gas from household appliances

NG-9B

GN4729 / R2

Sprue Safety Products Ltd.

Vanguard Centre, Sir William Lyons Road, Coventry CV4 7EZ UK

A Sprue Brand

Technical Support: 0800 141 2561 / EIRE dial: 1-800 523171

Email: tec[email protected] / Web: www.reangel.co.uk

Do not ignore any warning from your Natural Gas Alarm!

Vacate the property and immediately call the UK Gas

Emergency Service Helpline 0800 111 999.

Designed to meet:

BS EN 50194-1:2009

Features . . . . . . . . . . . .4

Natural Gas . . . . . . . . . .4

Where to install your

alarm. . . . . . . . . . . . . .5

How to install your alarm. . .7

Battery installation /

replacement . . . . . . . . . .7

Operating features . . . . . .8

Note: This user manual is also available in large text and other

formats. Please call 0800 141 2561 for further information.

Understanding the

product’s indicators . . . . . .9

Maintaining your alarm. . .11

What to do in the event

of an alarm . . . . . . . . . 11

Technical information. . . .12

Disposal . . . . . . . . . . . 13

Warranty . . . . . . . . . . . .13

CONTENTS

This NG-9B alarm detects Natural Gas

(also known as Methane, Flammable or Combustible Gas).

FEATURES

• Battery powered for simple no fuss

installation and maintenance.

• An advanced low power semi-

conductor sensor designed to

accurately measure Natural Gas in

your home before explosive levels are

reached.

• Detects Natural Gas continuously.

• Resistant to false alarms caused by

normal household contaminants.

• Sounds a loud 85dB alarm (at 1metre

(3 feet)) to alert you in case of an

emergency.

• SmartTest / Silence & Reset button.

• Designed to meet BS EN 50194-1:2009.

• Will detect Natural Gas for 5 years

before the alarm requires replacement.

• 5 year warranty.

NATURAL GAS

Natural Gas which is primarily Methane

(CH4), sometimes referred to as swamp

gas, is lighter than air and will rise.

IMPORTANT: The gas alarm you have

purchased is calibrated to detect Natural

Gas. If your gas supply comes from a

portable cylinder or storage tank it is more

likely to be propane, butane or a mixture

of these two Liqueﬁed Petroleum Gases

(LPG). This alarm is not suitable for

detecting LPG.

Natural gas is dangerous when the

concentration is high enough to become

explosive. The lowest concentration point

at which the combustible gas may become

explosive is called the Lower Explosive

Limit (LEL). FireAngel gas alarms are set to

alarm when the gas concentration reaches

10% of LEL.

Natural gas is odourless, therefore

additives known as stench agents are

mixed with the gas so it can be smelt. This

stench agent may be smelt at very low

concentrations of the gas and therefore it

may be possible to smell the gas prior to

the alarm giving an alarm signal.

If your alarm is in alarm immediately

telephone The UK Gas Emergency Service

Helpline 0800 111 999.

Tell the operator that you have a Natural

Gas alarm in your home and it is in full

alarm indicating that it has detected

dangerous levels of gas in the air and you

are concerned that gas is leaking.

Common Sources of Natural Gas:

• Cookers or other Gas powered

appliances

• Boilers

• Gas Fires

Do not: Ignore any warning from your gas

alarm!

WHERE TO INSTALL

YOUR ALARM

The Natural Gas alarm is suitable for use

in domestic premises and static caravans

with a mains gas supply.

WARNING: This alarm will only indicate

the presence of Natural Gas at the sensor.

Natural Gas may be present in other parts

of the property.

The alarm should be installed in any room

where a gas leak is possible to occur. The

most likely sources for a Natural Gas leak

are cookers, boilers and gas ﬁres.

Where in the room should the alarm

be located?

Firstly you must conﬁrm the type of gas in

your home.

Your NG-9B alarm is designed to detect

Natural Gas and is clearly marked with this

gas type.

Gas Alarm

Within 5m

Within 30cm

from

ceiling

As Natural Gas is lighter than air it will

naturally rise and build up at a high level

in the room. The NG-9B alarm should

therefore be placed above the highest

window, door or vent in the room. Ideally

within 30cm of the ceiling.

Do not locate your alarm:

• in an enclosed space (e.g. in a

cupboard or behind a curtain);

• directly above a sink;

• next to a door or window;

• next to an extractor fan;

• in an area where the temperature may

drop below −10 °C or exceed 50 °C;

• where dirt and dust may block the

sensor;

• in a damp or humid location.

• Its location should not be too close to

openings or ventilation ducts since

the airﬂow at these places may be

high and may locally decrease the gas

concentration.

The alarm should not be installed

immediately above or next to gas

appliances since small gas releases may

occur before ignition that may result in

unwanted alarms. It should be noted

that installation near cookers may lead

to:

• alarms produced by cooking vapours

and not gas escapes;

• contamination by grease that may

impede the correct operation of the

alarm.

90mm

Drill hole spacing

Caravans and boats

IMPORTANT: Your NG-9B Natural Gas

alarm has not been designed or calibrated

to detect LPG which is most commonly

found in caravans and boats and as such is

not suitable for these vehicles.

HOW TO INSTALL

YOUR ALARM

NOTE: This apparatus should be installed

by a competent person who feels able to

install it according to the instructions.

Firstly write the installation date on your

alarm in the area provided.We recommend

that your alarm is installed on the wall.

To mount on a wall:

Please ensure that you use the screws

provided, as they were chosen speciﬁcally

for use with this product. Use the template

provided for guidance on marking hole

positions. Drill holes into the wall. Insert

the plastic wall plugs. Screw in the screws.

Ensure screws are protruding from the

wall by 3mm to allow alarm to slot onto

screws.

To place on a shelf:

The base of the alarm has been designed

to allow it to stand freely on a shelf.

WARNING: When placing on a shelf,

please adhere to the same positional

recommendations as described above.

Ensure the alarm is at the recommended

height.

BATTERY

INSTALLATION /

REPLACEMENT

aIf the alarm is already wall mounted

then unhook it from the mounting

screws.

bRemove the battery cover located on the

back of the alarm.

cReplace the batteries with 2 x approved

1.5 volt AA size lithium batteries (see

page 12 for recommended batteries),

making sure the batteries are the correct

way round.

IMPORTANT: Use of batteries other

than those recommended may have

a detrimental effect on the alarm’s

operation.

d Replace the battery cover and return the

alarm to its original position.

Press ridged

area in and

slide door out

to reveal battery

compartment

eIf you have followed all of the

above steps correctly, your unit will

begin monitoring for Natural Gas

immediately.The Power LED will ﬂash

green once per minute to indicate that

the alarm is receiving power from the

batteries and is fully operational.

fTest that the sounder is working and the

batteries are providing power to the unit

by pressing and holding theTest button

for 1 second.The sounder should chirp

once as soon as the button is pressed,

the alarm LED will ﬂash red and the

power / fault indicator will ﬂash green

and yellow once to indicate that the

alarm is working.

WARNING: Prolonged exposure to the

sounder in close proximity to your ears

may damage your hearing.

Under normal operating conditions, the

batteries should last for at least 12 months.

The alarm will not detect Natural Gas

when the batteries are drained.

WARNING: Prolonged exposure to

extreme high or low temperatures may

reduce the life of the batteries.

OPERATING FEATURES

Your alarm offers many features which set

it apart from other Natural Gas alarms on

the market today.

Alarm Test, Silence and Reset Button

• Test the sounder, batteries and circuitry.

• Silence the sounder for 3 minutes (only

when the gas detected is less than 20%

LEL).

• Reset the red alarm LED after an alarm

activation when the air is clear.

Testing the sounder, batteries and

circuitry

Test the sounder, batteries and circuitry

by pressing and holding the Test button

for approximately 1 second to conﬁrm

that the alarm is operating properly. The

green, red, then yellow LEDs will ﬂash,

and the sounder will sound indicating that

the alarm is working and the batteries are

providing power to the unit. This test for

the sounder, batteries and circuitry should

be performed monthly.

Silence the alarm

The alarms loud sounder can be silenced

for a short period (3 minutes) by pressing

and holding down the Test button for

approximately 1 second until the sound

stops.The red alarm indicator will continue

to ﬂash every second.

To reset the alarm indicator

If the alarm has alarmed, once the air is

clear the sounder will stop. It is possible

that an alarm event may happen due to

an intermittent occurrence when no one

is in the building.The red led indicator will

remain ﬂashing until it has been manually

reset.

To reset the red alarm press theTest button

twice within 2 seconds. The red LED will

turn off, should gas be detected, an alarm

will sound within 30 seconds.

UNDERSTANDING

THE PRODUCT’S

INDICATORS

The product is designed to immediately

alarm when it is exposed to ﬂammable gas

at a level of 10% of the Lower Explosive

Limit (LEL) or higher.

When ﬂammable gas is detected a loud

audible signal will be emitted and the

alarm LED will ﬂash red every second.

Fault / End of life signal:

The unit continuously checks the settings of

its sensor and circuitry. If any of these settings

are found to be incorrect then the alarm will

emit a audible chirp twice every 5 minutes

for up to 30 days. Replace unit immediately.

IMPORTANT: This does NOT mean that

the alarm has detected Natural Gas.

Low battery

If the batteries are low then the alarm will

emit a single audible chirp every minute for

up to 30 days. Replace batteries immediately.

If the product continues to chirp despite

having new batteries and the product is still

within warranty then contact Technical

Support on 0800 141 2561. If the

product is no longer in warranty replace it

immediately!

LED Indicator Table

Status

Power

LED

Green

LED

Red

LED

Yellow

Audible

Signal

Action

Required

Normal

operation

- every

25-30 secs

Test button

pressed

- single

ﬂash

- single

ﬂash

- single

ﬂash

- single

chirp

ALARM - every

second

- chirps

rapidly on

and off

Alarm: Check if

there is a gas

hazard and

vacate property.

Telephone Gas

Emergency

Service Helpline

0800 111 999.

Alarm has

occurred,

pending

reset

- every

second Reset alarm

Low

battery

- every

25-30 secs

- single

chirp every

minute

Replace battery

within 30 days

Fault / End

of Life

- every

25-30 secs

- chirps

twice every 5

minutes

Replace alarm

immediately

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