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HAA100012_11.02.10 

2109M5500_7

MAN0849_ Issue 8_02/10

© 2010 Honeywell Analytics

11580

Find out more

Contact Honeywell Analytics:

  

www.honeywellanalytics.com

Europe, Middle East, Africa, India

Honeywell Analytics
4 Stinsford Road
Nuffield Industrial Estate
Poole, Dorset  BH17 0RZ
Tel: +44 (0)1202 645577
Fax: +44 (0)1202 665331
[email protected]

Americas

Honeywell Analytics Inc.
405 Barclay Blvd.
Lincolnshire, IL 60069
USA
Tel: +1 847 955 8200
Toll free: +1 800 538 0363
Fax: +1 847 955 8210
[email protected]
  

www.honeywell.com

Technical Services

[email protected]

www.sfdetection.com

Register your detector at

TESTING YOUR CARBON MONOXIDE ALARM

The unit should be tested monthly by pressing and holding the 
test button on the front of the unit for 5 seconds. If the unit is 
functioning correctly, the green light will stay illuminated, the red 
light will flash and the alarm will sound.

SPECIFICATION

Model: 

SF450EN

Gas Detected:  

Carbon Monoxide

Detection Principle: 

Electro-chemical cell

Alarm Indication: 

Flashing red light and audible alarm

Alarm Levels: 

50ppm Between 60 to 90 mins

 

100ppm Between 10 to 40 mins

 

300ppm Less than 3 mins

Operating Temperature: 

-10˚C to 40˚C

Humidity Range: 

30 to 90% RH

Warm-up time after 
initial switch on: 

Instantaneous

Normal Operating Life: 

Up to 7 years

Battery life when in alarm: 

At least 5 days

Dimensions: 

110mm x 76mm x 34mm

Weight: 

Approximately 180g

 

 

CARE AND MAINTENANCE OF ALARM

The Carbon Monoxide alarm is pre-calibrated at the factory and 
requires no maintenance other than to clean the outside case 
occasionally with a clean tissue. Ensure that the holes on the 
front of the unit are not blocked with dust or dirt. 

DO NOT USE 

CLEANING AGENTS, BLEACH OR POLISH

.

END OF UNIT LIFE

The unit will operate for up to 7 years under normal use. The unit 
must be replaced when either the end of life signal is given (buzzer 
sounds 3 times per minute) or a fault warning signal (1 or 2 chirps 
per minute) is given.

DISPOSAL

When the unit has come to the end of its life, dispose of it in 
accordance with local regulations.

WHAT TO DO WHEN THE ALARM SOUNDS

If the unit raises an alarm, proceed as follows:

•    Open all doors and windows to ventilate the area and allow the   
    Carbon Monoxide to disperse.

•    Where possible turn off all fuelled appliances and stop  
    using them.

•    Evacuate the property leaving the doors and windows open.

•    Ring the gas or other fuel supplier on their emergency number 
    and explain the problem. Keep the telephone number in a 
    prominent place.

•    Do not re-enter the property until the alarm has stopped.

•    Get medical help immediately for anyone suffering from the 
    effects of Carbon Monoxide poisoning such as headaches, 
    nausea, etc. and advise that Carbon Monoxide poisoning  
    is suspected.

•    Do not use the fuel burning appliances again until they 
    have been checked and cleared for use by a competent  

 

    person according to national regulations.

GAS EMERGENCY SERVICE

TELEPHONE NUMBER

0800 111 999

Contact Numbers for 

OTHER FUEL

 Appliances:

OIL USERS:

 

Contact OFTEC on 0845 658 5080

SOLID FUEL USERS:

  Contact HETAS on 0800 600 000

 

 

(Please note these numbers are only

 

 

available during normal office hours)

Gas appliances should be checked for safety annually by a  
Gas Safe registered engineer. To find a registered engineer in your 
area call Gas Safe Register on 0800 408 5500 or look on the 
website: www.gassaferegister.co.uk.

User Manual also available in Braille. A Carbon Monoxide 
safety information sheet is available in: Punjabi; Urdu; Bengali; 
Gujarati and Hindi. For copies please call Honeywell Analytics  
on: 

01202 645577

The Consumer product range from  
Honeywell Analytics, the UK’s No 1 manufacturer  
and supplier of consumer gas alarms.

DISCLAIMER

This Carbon Monoxide alarm is designed to alert you to a 
potentially dangerous build-up of Carbon Monoxide gas. It is not 
designed to remedy a Carbon Monoxide problem nor to locate a 
specific source of Carbon Monoxide. Honeywell Analytics shall not 
be liable to pay for any Carbon Monoxide investigation or service 
call carried out or arranged in response to an alarm.

GUARANTEE

We guarantee your new Carbon Monoxide alarm for six years 
from the date of purchase or until the expiry date on the front of 

the unit, whichever occurs first - under normal use and service, 

to be free from defects in materials and workmanship. During this 
period we will, at our discretion, repair or replace any part of the 
Carbon Monoxide alarm which is found to be defective in either 
materials or workmanship providing this occurs under normal use 
and service. We shall, however, be under no obligation to repair, 
or replace units which are found to be defective in any way due to 
damage, neglect, unreasonable use or which have been tampered 
with or found to have been dismantled. Should a problem arise 
with your detector, please contact your supplier. If you have further 
problems, please contact Honeywell Analytics helpline direct on  
+44 (0) 1202 645577. If units need to be returned, send them in 
suitable packaging along with proof of purchase to: 

CO Returns, Honeywell Analytics, 4 Stinsford Road, 

Nuffield Industrial Estate, Poole, BH17 0RZ.

An accompanying letter should state clearly any problem with 
the Carbon Monoxide alarm. This guarantee does not affect your 
statutory rights.

KM 36020 

BS EN 50291:2001

2109M5500_8    HAA100012_11.02.10 

          OPERATION OF THE ALARM

Green 

Power 

Light

Red 

Alarm 

Light

Buzzer

Normal Operation

When no Carbon Monoxide is present, the green power light will flash approximately 
once every minute.

 

During normal operation the unit carries out a self-check test every 5 minutes.

1 flash per 

minute

Alarm Condition

When the unit detects Carbon Monoxide, it will give the 

alarm signal 

continuously. The 

red alarm light will flash and the buzzer will sound approximately 5 chirps per second.

5 chirps per 

1 second

When the unit has been in alarm for 30 minutes the full 

alarm signal

 will be given once 

every minute.

5 chips per 1 

second per 

minute

Alarm Signal

The Carbon Monoxide alarm can be distinguished from smoke detector alarms as it 
signals C.O. in morse code (approximately 5 chirps per second).

Hush Feature

If required, the audible alarm can be silenced for 5 minutes by pushing the button 
marked ‘Test’. The red alarm light will continue to flash 5 times per second.

5 flashes per 

1 second

If Carbon Monoxide is still present after the 5 minute hush period, the audible alarm will 
sound.

NOTE:

 The hush facility will not operate at levels above 350ppm Carbon Monoxide. At 

levels below 350ppm the hush facility will only operate once, ie the audible alarm can 
only be silenced for one 5 minute period.

5 chirps per 

1 second

Return to Normal Operation

When the Carbon Monoxide gas disperses, the alarm signal will stop. The green power 
lamp will continue to flash approximately once every minute.

1 flash per 

minute

Fault Warning

If a fault is detected the buzzer will sound 2 short chirps every minute. The unit must 
then be replaced.

2 chirps per 

minute

Battery Fault Warning/End of Battery Life

The buzzer will sound 1 short chirp every minute.

1 chirp per 

minute

End of Unit Life

When the unit comes to the end of its life the buzzer will sound 3 short chirps every 
minute. The unit must then be replaced.

NOTE:

 With normal use the batteries will last for up to 7 years. However, battery life will 

be reduced if either a fault occurs with the battery or the unit remains in alarm for long 
periods of time. Should the Battery Fault Warning occur please contact your supplier.

3 chirps per 

minute

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