6. OPERATION OF THE ALARM
P OW ER
LIG H T
A LA R M /C O NFID E NC E
LIG H T
TE S T
B U TTO N
B U ZZ ER
GA S
IN LE T
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.
8. HOW SHOULD I INSTALL MY ALARM?
CABLE ENTRY PO IN TS
WALL FIXING HO LES
ELEC TRICAL BOX M OU NTING HO LES
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, SF340H, 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.
Model SF340G
1.
This model is mounted using the 2 ‘keyhole’ slots provided on the back of the
unit. Make 2 holes 68mm apart using a 5mm drill. Fit the wall plugs into the
holes and either gently tap mounting pegs into the wall plugs or fit the screws
and spacers provided. Hook the unit over the 2 protruding pegs or screw heads/
spacers.
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)
B R O W N
B L U E
L IV E
E A R T H
N E U T R A L
( B R O W N / R E D )
( B L U E / B LA C K )
S U P P LY
W IR IN G
U N IT
W IR IN G
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 tightened
to ensure electrical safety.
Model SF340F
1.
The SF340F must be supplied from a non-switched 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)
Model SF340G
1
The SF340G is provided complete with electrical cable and fitted plug. The plug is
fitted with a 3A fuse and only 3A fuses must be used as replacements.
Plug into normal household 13A socket and switch on to operate. (See sections 3,
4, and 5 regarding siting of alarm.)
Model SF340H
1.
The SF340H must be supplied from a non-switched 3 Amp fused spur (12Vdc).
2.
Connect the supply wiring to the 3 way terminal block provided.
3.
Connect the red wire of the power supply unit to the positive supply wire (+12Vdc).
4.
Connect the black wire of the power supply unit to the negative supply wire (0V).
5.
No earth connection is required.
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. Ensure that the power supply clip makes correctly and then tighten
the securing screw.
Important: The power supply securing screw must be tightened
to ensure electrical safety.
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.
B A C K U P
B AT T E R Y
P O W E R S U P P LY
S E C U R IN G S C R E W
P O W E R S U P P LY U N IT
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:
!
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 their 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, headache, nausea etc and advise that carbon monoxide poisoning is
suspected.
!
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.
EMERGENCY TELEPHONE NUMBER
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 continuous
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.
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 connection board fitted to
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 SF340For SF340J alarms
A maximum of 20 units can be interconnected.
A LA R M 1
A LA R M 2
A LA R M 3
IN T E R C O N N E C T
R E LAY O U TP U T
P O W E R IN P U T
F U S E
50 0m A
25 0V
IN T E R C O N N E C T
R E LAY O U TP U T
P O W E R IN P U T
F U S E
50 0m A
25 0V
