User Manual
Carbon Monoxide Alarm
Model SF340 Series
CAREFULLY READ AND UNDERSTAND THE CONTENTS OF THIS
INSTRUCTION MANUAL BEFORE USING THE ALARM.
RETAIN THE MANUAL IN A SAFER PLACE FOR FUTURE
REFERENCE. PAY PARTICULAR ATTENTION TO THE SAFETY
WARNINGS. BE SURE TO PASS THE MANUAL ONTO ANY
SUBSEQUENT USERSOF THE ALARM.
WHEN INSTALLING THIS ALARM FOR USE BY OTHERS PLEASE
LEAVE THIS MANUAL OR A COPY WITH THE END USER.
This manual covers the following models:
SF340E
230V, 50Hz Standard Model
SF340F
230V, 50Hz Output Model
(for relay and interconnect feature)
SF340J
12/24Vdc Output Model
(for relay and interconnect feature)
Each of the models above comes complete with:
SF340M
Carbon Monoxide Sensor Module including battery
back-up and electrochemical gas sensing system.
WARNING
Actuation of your Carbon Monoxide (CO) alarm
indicates the presence of Carbon Monoxide (CO)
which can KILL YOU.
THIS Carbon Monoxide ALARM MAY NOT PROTECT PEOPLE WHO
ARE AT SPECIAL RISK BY REASON OF AGE, PREGNANCY OR
MEDICAL CONDITION. THESE INDIVIDUALS MAY CONSIDER US-
ING WARNING DEVICES WHICH PROVIDE AUDIBLE AND VISUAL
SIGNALS FOR Carbon Monoxide CONCENTRATION UNDER
30PPM. IF IN DOUBT PLEASE CONTACT YOUR
MEDICAL PRACTITIONER. A Carbon Monoxide ALARM IS NOT A
SUBSTITUTE FOR A SMOKE ALARM OR A COMBUSTIBLE
GAS DETECTOR.
This Carbon Monoxide alarm is designed to detect Carbon
Monoxide gas from any source of combustion including wood,
coal, coke, oil, petrol and gas.
This Carbon Monoxide Detector is
NOT
• Designed to detect smoke fire or any other gas.
• To be seen as a substitute for the proper servicing of fuel-burning
appliances or the sweeping of chimneys.
• To be used on an intermittent basis, or as a portable alarm for the
spillage of combustion products from fuel burning appliances or
chimneys.
CAUTION
This Carbon Monoxide alarm is designed for indoor use only. Do not
expose to rain or moisture. Do not knock or drop the alarm. Do not
tamper with the alarm as this could cause electric shock or alarm
malfunction. The alarm will not protect against the risk of Carbon
Monoxide poisoning when the battery back up is no longer
functioning. This alarm will only indicate the presence of Carbon
Monoxide gas at the sensor. Carbon Monoxide gas may be present
in other areas. Do not paint.
TESTING YOUR ALARM
A green power light indicates power is supplied. The alarm should be
tested weekly by pushing and holding the test button on the front of
the unit. The alarm signal should sound. If relay models are in use or
units are interconnected please be aware that the relay function will be
activated upon test.
CARE AND MAINTENANCE OF ALARM
The outside casing of the alarm should be wiped occasionally with a
cloth. Ensure that the holes on the front are not blocked with dirt and
dust. DO NOT USE CLEANING AGENTS, BLEACH OR POLISH.
IMPORTANT
• Ideally it is recommended that a Carbon Monoxide alarm should
be installed in or near to every room which contains a fuel burning
appliance such as gas fires, central heating boilers, room heaters,
water heaters, cookers, grills etc
• Ensure that the alarm buzzer can be heard by all those who are
intended to hear it.
• Seek medical help if it is suspected that a member of the
household is suffering from Carbon Monoxide poisoning.
IF FURTHER DETAILS ARE REQUIRED THAT DO
NOT APPEAR IN THIS MANUAL PLEASE CONTACT
HONEYWELL ANALYTICS.
PACK CONTENTS
Models SF340E, SF340F, SF340J will contain:
One alarm
One Sensor Module (SF340M)
One instruction manual
One installation kit, consisting of:
Two wall plugs
Two wall fixing screws
Two electrical mounting screws
SPECIFICATION
Models:
SF340E,F,J
Gas Detected:
Carbon Monoxide
Detection Principle:
Electro-chemical cell
Alarm Indication:
Flashing red light and audible
alarm
Alarm Levels:
150ppm
Between 10 and
30 minutes
350ppm
Within 6 minutes.
(as required by
BS7860: 1996)
Supply Voltage Range:
SF340E,F
220/240Vac,
50Hz
SF340J
12Vdc ±10% or
24Vdc ±10%
Operating Temperature:
-5ºC to 40ºC.
Humidity Range:
30 to 90% RH.
Warm-up Time after Initial Switch On:
Instantaneous.
Normal Module Operating Life:
5 years.
Backup Battery Life when in Alarm:
At least 5 days.
Dimensions:
170mm x 110 mm x 65mm.
Weight:
Approximately 575g.
DISPOSAL WARNING: Do not dispose of in fire
GUARANTEE
We guarantee your new gas alarm for five years, from the date
of purchase and under normal use and service, to be free from
defects in materials and workmanship. During this period we will,
at our discretion, repair, replace of refund the price of any part of
the gas 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 noobligation to repair, replace or
refund the price of 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. Defective units
should be returned, in suitable packaging, along with proof of
purchase to Honeywell Analytics, 4 Stinsford Road, Nuffield
Industrial Estate, Poole, BH17 0RZ. An accompanying letter should
state clearly any problem with the gas alarm. This guarantee does
not affect your statutory rights.
INTRODUCTION
Thank you for purchasing this alarm which is designed to detect
the presence of Carbon Monoxide (CO) gas. This manual contains
information on the installation and the operation of the SF340
modular Carbon Monoxide alarm.
THIS ALARM SHOULD ONLY BE INSTALLED
BY A COMPETENT PERSON
ALL ELECTRICAL WIRING SHOULD BE INSTALLED
IN ACCORDANCE WITH THE CURRENT WIRING REGULATIONS OF
THE INSTITUTE OF ELECTRICAL ENGINEERS
1. WHAT IS CARBON MONOXIDE?
Carbon Monoxide is a highly poisonous gas which is released
when fuels are burnt. It is invisible, has no smell and no taste,
therefore it is very difficult to detect with the human senses.
Potential danger areas in your home
Gas, coal
or wood
fire
Boiler or
Heater
Water
Heater
Portable gas
or paraffin
heater
Clogged
chimney
or flue
Car fumes
from
garage
Portable
cooking
equipment
used in
enclosed areas
Kitchen
cooker
Under normal operating conditions, in a room where fuel
burning appliances are well maintained and correctly ventilated,
the amount of Carbon Monoxide released by the appliances is
not dangerous.
A dangerous quantity of Carbon Monoxide can occur if one or
more of the following conditions exists:
1. An appliance is faulty or badly maintained.
2. A flue is partially or totally blocked.
3. A room is not adequately ventilated.
The following conditions can result in transient Carbon Monoxide
situations:
1. Excessive spillage or reverse venting of fuel burning appliances
caused by outdoor ambient conditions such as:
i. Wind direction and/or air velocity; including high gusts of
wind. Heavy air in the vent pipes(cold humid air with
extended periods between cycles)
ii. Negative pressure differential resulting from use of exhaust fans.
iii. Simultaneous operation of several fuel burning appliances
competing for limited internal air.
iv. Flue connections breaking loose from clothes dryers, water
heaters or boilers.
v. Obstructions in or unconventional flue designs which can
amplify the above situations.
2. Extended use of unvented fuel burning devices.
3. Temperature inversions which can trap exhaust gases near the
ground.
4. A car running in an open or attached garage near a home.
2. WHAT ARE THE SYMPTOMS OF CARBON MONOXIDE POISONING?
The following symptoms are related to Carbon Monoxide
poisoning and should be discussed with ALL members of the
household:
Mild exposure:
Slight headache, nausea, vomiting, fatigue
(often described as “flu-like” symptoms)
Medium exposure:
Severe throbbing headache, drowsiness,
confusion, fast heart rate.
Extreme exposure:
Unconsciousness, convulsions,
cardiorespiratory failure, death.
Many reported cases of Carbon Monoxide poisoning indicate that
while victims are aware they are not well, they become so
disorientated that they are unable to save themselves by either
exiting the building or calling for assistance. It is also important to
note that young children and pets may be the first to be affected.
3. IN WHICH ROOM SHOULD I PUT THE ALARM?
Ideally you should have an alarm in or near every room which
contains a fuel-burning appliance.
However, if you have more than one appliance but only one alarm,
you should take the following into consideration when deciding
where best to put the alarm:
• If there is a fuel burning appliance in a room where people
sleep, you should put the alarm in that room.
• If there is a fuel burning appliance in a room you use a lot
such as a sitting room, you should put the alarm in that room.
• If you live in a bed-sit put the alarm as far away from the
cooking appliance as possible, but near to the room where
you sleep.
• If the fuel burning appliance is in a room not normally used
(e.g. a boiler room) put the alarm just outside the room so you
will be able to hear it.
4. WHERE SHOULD I PUT THE ALARM?
Carbon Monoxide has a similar density to warm air. To ensure the
most effective use is made of the alarm it should be fitted at least
1.5m (5’) above floor level and at least 1.85m (6’) from the fuel
burning appliance. Warm air naturally rises; it is better to install the
unit higher rather than lower. The SF340 Series can be fitted on the
wall or on the ceiling.
ALARM
1.85m
(6’)
(min)
1.5m
(5’)
(min)
5. WHERE NOT TO PUT THE ALARM
Do not place the alarm in the following areas:
• Outside the building.
• In or below a cupboard.
• In a damp or humid area.
• Directly above a sink or cooker.
• Next to a door or window or anywhere it could be affected
by drafts.
• Where the airflow to the alarm could be obstructed by curtains
or furniture.
• Where dust or dirt could collect and block the sensor.
• Where the temperature could drop below -5ºC or rise above 40ºC.
• Where it could be easily knocked or damaged.
• Within 1.5m (5 feet) of any cooking appliance.
6. OPERATING OF THE ALARM
The detector is not fitted with an on/off switch, it is automatically
switched on when the power source is activated. This is to ensure
the detector can not be inadvertently switched off and therefore
fail to detect a build up of Carbon Monoxide.
Normal operation
When the unit is powered from the primary power source (e.g.
230Vac, 12/24Vdc), the green light will be illuminated. (The green
light will not be illuminated when the battery backup is in use.)
When no Carbon Monoxide is present the red alarm light will flash
approximately once every 60 seconds. This indicates the alarm is
working correctly.
Alarm conditions
When the unit detects Carbon Monoxide, the alarm signal is given
continuously. The red light will flash and the buzzer will sound.
When the unit has been in alarm for a period of 40 minutes, the
alarm signal will be given once every 60 seconds.
Return to normal operation
When the Carbon Monoxide disperses, the alarm will automatically
stop. The red light will flash approximately once every 60 seconds
(normal operation.)
Battery replacement warning
When the backup battery in the SF340M module needs replacing the
audible alarm will sound a single short beep once every 60 seconds.
The battery must then be replaced. The red light will flash once every
60 seconds as normal. See Section 10 on batteries.
Module replacement warning
When the module (SF340M) needs replacing, the audible alarm will
sound two short beeps every 60 seconds. At this time the module
must be replaced. The red light will flash once every 60 seconds as
normal.
7. SF340 SERIES FEATURES
All units are powered by a primary power source (e.g. 230V or
12/24Vdc) and contain a replaceable Module which houses the
battery backup and gas sensing systems.
POWER LIGHT (all SF340 models)
The green power light will illuminate when the primary power
source is connected and working (230V or 12/24Vdc according to
model). This light will illuminate even when the Module is not fitted.
ALARM/CONFIDENCE LIGHT (all SF340 models)
In normal operation the red light will flash once per minute to
indicate that the unit is operating correctly. This light will flash
whether the Module is powered from the primary power source or
the battery backup. In the alarm condition it will flash five times
per second.
AUDIBLE ALARM (all SF340 models)
In the alarm condition the buzzer will sound. Models SF340E,
SF340G and SF340H will sound the Morse Code signal for ‘CO’
(– • – • – – –). Models SF340F and SF340J will give a continu
-
ous buzzer sound and this will continue for 90 seconds after the
alarm light has stopped. Where models SF340F and SF340J are
interconnected, all units connected will sound the continuous
alarm signal. Only units in alarm will have a continuously flashing
alarm light.
BATTERY BACKUP (all SF340 models)
All models in the SF340 series have a battery backup feature. This
powers the alarm in the event of a primary power failure (230V or
12/24Vdc according to model).
TEST BUTTON (all SF340 models)
All models in the SF340 series have a test button. This is
positioned on the front of the unit and when pushed will cause
the audible and visual alarm signals to be given. If the relay and
interconnect options are used, these will also operate when the
test button is pressed. Note that for models SF340F and SF340J
the buzzer will sound and the relay will operate for 90 seconds.
RELAY OUTPUT (Models SF340F & SF340J)
The relay provides a single pole changeover (SPCO) volt free
contact which can be used to signal to a control panel or switch
an external siren or gas valve. The relay contacts are rated at 3A
/ 230Vac and will change state when the unit goes into the alarm
condition or when the test button is pressed. When the unit comes
out of the alarm condition the relay will automatically revert to its
original state after a delay of 90 seconds.
INTERCONNECT (Models SF340F & SF340J)
The interconnect facility enables up to 20 SF340F or SF340J
alarms to be connected together. If one unit goes into the alarm
condition the audible alarm on all interconnected units will sound.
This alarm signal is a continuous tone. The unit that caused the
alarm can be identified as it will be the only one with a
continuously flashing alarm light. When the unit comes out of the
alarm condition the alarm light will stop giving the alarm signal.
After a delay of 90 seconds the buzzers of all interconnected units
will stop sounding and the relays will reset.
8. HOW SHOULD I INSTALL MY ALARM?
ELECTRICAL BOX MOUNTING HOLES
CABLE ENTRY POINTS
WALL FIXING HOLES
A. Mounting
Select a suitable location to install the alarm (see Section 4
‘WHERE SHOULD I PUT THE ALARM’ and Section 5 ‘WHERE
NOT TO PUT THE ALARM’).
The model number and supply voltage are marked on the power
supply unit and can be viewed with the outer cover removed.
Models SF340E, SF340F, SF340J
1. Remove the outer cover of the unit by gently pushing in the 2
edge clips. Remove the power supply unit by pushing in the
lower clip and lifting off.
2. Decide where the electrical supply cable is to enter the unit and
cut out the appropriate cable entry on the base. If the wiring to
the unit is surface mounted, standard 16mm x 25mm electrical
trunking must be used for the cable.
3. The unit has been designed to be either surface or flush
mounted:
a) Surface Mount
Mark the position of the 2 mounting holes, drill two 5mm
diameter holes and secure the unit to the wall using the screws
and wall plugs provided.
b) Flush Mount
Using a standard 2 gang 28mm mounting box, complete the
electrical connections (see below), re-fit the power supply cover
and secure using the 2 M3.5 screws provided.
B. Electrical Connections
Model SF340E
1. The SF340E must be supplied from a non-switched 3 Amp
fused spur (230Vac).
2. Connect the supply wiring to the 3 way terminal block
provided. (Maximum wire size is 2.5mm²)
3. Connect the brown wire of the power supply unit to the red or
brown wire of the supply (live).
4. Connect the blue wire of the power supply unit to the black
or blue wire of the supply (neutral).
5. No connection must be made to the mains supply earth.
The earth wire can be sleeved and connected to the third
terminal of the block to avoid contact with any other wires.
6. Once all electrical connections are made, locate the terminal
block in the base by fitting on the pegs.
7. Fit the power supply unit to the base ensuring that the wires sit
in the base and do not get trapped. Check that the power
supply is positioned correctly and the fixing clip has operated.
Secure the power supply in place by tightening the securing
screw.
Important: The power supply securing screw must be tight-
ened to ensure electrical safety.
Model SF340F
1. The SF340F must be supplie
from a nonswitched 230Vac
spur. No external fuse is required
since a fuse is incorporated in
the unit. (Maximum wire size is
2.5mm²)
2. Connect the red or brown (live)
wire of the supply to the terminal
marked L on the connection
board fitted to the base of the unit.
3. Connect the black or blue (neutral) wire of the supply to the
terminal marked N.
4. No connection must be made to the mains supply earth.
(Refer to later section for Relay and Interconnect Connections)
Important: The power supply securing screw must
be tightened to ensure electrical safety.
Model SF340J
1. The SF340J must be supplied
from a 12Vdc or 24Vdc
supply. No external fuse is
required since a fuse is
incorporated in the unit.
2. Connect the positive supply wire
(+12Vdc or +24Vdc) to the
appropriate terminal marked on
the base of the unit.
3. Connect the negative supply wire (0V) to the terminal marked 0V.
4. No connection must be made to the supply earth.
(Refer to following section for Relay and Interconnect Connections)
RELAY CONNECTIONS (Models SF340F & SF340J only)
The relay connections are made using the terminal block on the
connection board marked RELAY O/P. Connections to the relay
volt free contacts are as follows:
N/C
–
Normally closed
COM
–
Common
N/O
–
Normally open
The relay contacts are rated at
3 Amps / 230Vac.
INTERCONNECT CONNECTIONS (Models SF340F & SF340J only)
The interconnect system is made using the terminal block on the
connection board marked INTERCONNECT. Units are connected
in series as follows,
I/C
- Connect to I/C terminals of other SF340F or SF340J alarms
I/C 0V
- Connect to I/C 0V terminals of other SF340F or
SF340J alarms
A maximum of 20 units can be interconnected.
Interconnect
Relay Output
Power Input
Fuse
500mA
250V
Interconnect
Relay Output
Power Input
Fuse
500mA
250V
Alarm 1
Alarm 2
Alarm 3
Once all electrical connections have been made, fit the power
supply unit to the base.
Ensure that the power supply clip fits correctly and then tighten
the securing screw.
Important: The power supply securing screw must be
tightened to ensure electrical safety.
C. Fitting the Module and Turning On
All SF340 models
The sensor module SF340M is used for all the SF340 series units.
Simply fit the Module to the installed base and power supply unit
and gently push down until it clips into place. The red alarm light will
illuminate for approximately 10 seconds when the module is fitted.
NOTE: The Module must have the backup battery fitted for the alarm
to operate correctly. This applies even if the primary power supply
is present (230Vac, 12Vdc or 24Vdc as appropriate). If no battery is
fitted or the battery is flat the audible alarm will sound continuously
when the unit is installed and the primary power source is switched
on.
Fit the outer cover of the unit by pushing until the clips at either end
hold the cover in place.
Turn on the electrical supply. Check that the green power light
illuminates and the red alarm lamp flashes briefly once every minute.
Push the test button and hold until the audible alarm signal is given.
The unit is now ready and working.
9. HOW DO I REPLACE THE SENSOR MODULE?
All SF340 models
Remove the outer cover of the unit by gently pushing in the clips
at either end. Remove the module fixing screw (if fitted) and unclip
the Module from the installed base and power supply unit. The
replacement Module can simply be clipped into the power supply
unit and the fixing screw replaced if used.
NOTE: The Module must have the backup battery fitted for the
alarm to operate correctly. This applies even if the primary power
supply is present (230Vac, 12Vdc or 24Vdc as appropriate). If no
battery is fitted or the battery is flat the audible alarm will sound
continuously when the Module is fitted.
Push the test button and hold until the audible alarm signal is
given and the red light flashes. The unit is now ready and working.
10. BATTERIES
Only the following batteries are suitable replacements for the
SF340M backup battery:
Duracell MN1604
Rayovac A1604
Gold Peak 1604A
Energizer 6LR61/522
To replace the backup battery, remove the Module from the unit
(see section 9), unclip the battery and replace with a fresh battery.
Refit the Module and outer cover to the unit and push and hold
the test button until the audible alarm signal is given and the red
light flashes.
11. WHAT SHOULD I DO IF MY ALARM SOUNDS?
If your alarm sounds, please proceed as follows:
3
Open all doors and windows to ventilate the area and allow the
Carbon Monoxide to disperse.
3
Where possible turn off all fuelled appliances and stop using
them.
3
Evacuate the property leaving the doors and windows open.
3
Ring the gas or other fuel supplier on their emergency number
and explain the problem. Keep their number in a prominent
place.
3
Do not re-enter the property until the alarm has stopped.
3
Get medical help immediately for anyone suffering from the
effects of Carbon Monoxide poisoning such as, headache,
nausea etc and advise that Carbon Monoxide poisoning
is suspected.
3
Do not use the appliances again until they have been checked
by an expert and the fault located and cleared. In the case of
gas appliances this should be a CORGI registered installer.
Power Supply Scuring Screw
Backup Battery
Power Supply Unit
Issue 4/ A02894
2102M0658
MAN0820_EMEAI
07-08
© 2008 Honeywell Analytics
Honeywell Analytics
4 Stinsford Road
Nuffield Industrial Estate
Poole BH17 0RZ
UK
Freephone: (+44) (0) 800 0642999
