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Carbon Monoxide Alarms
Ei207/208 Series
Ei207 / Ei208 Carbon Monoxide Alarm Series
for use in Homes, Caravans, Motor Caravans and Boats
Instructions
Read and retain carefully for as long as the product is being used. It contains vital information on the
operation and installation of your Alarm. This booklet should be regarded as part of the product.
If you are just installing the Alarm, this booklet must be given to the householder. This booklet is to be
given to any subsequent user.
Table of Contents
page
1. Read This First ....................................................................
2. Carbon Monoxide – The Silent Killer ..................................
3. Where to place CO Alarms .................................................
4. Installation ...........................................................................
5. Monitoring / Testing & Maintenance ....................................
6. What to do when the alarm sounds ....................................
7. How to Protect your Family .................................................
8. Technical Specification ..................................................
9. Getting the CO Alarm Serviced .....................................
10. Guarantees ....................................................................
11. Limitations of CO Alarms ...............................................
12. Troubleshooting .............................................................
13. Display & Indicator Summary ........................................
14. Contact Us .....................................................................
2. Location & Positioning
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Model
Ei207
Ei207 Series with Replaceable Batteries (2 x AAA)
Model Chart
Ei207D
No
No
RF
Capability
No
No
RF Module
Supplied
No
Yes
LCD
Display
Model
Ei208W
Ei208WRF
Yes
Yes
RF
Capability
No
Yes
RF Module
Supplied
No
Ei208
No No No
No
Ei208DW
Ei208DWRF
Yes
Yes
No
Yes
Yes
Yes
LCD
Display
Ei208 Series with built-in Long Life Battery
The models listed below are designed for domestic premises, caravans, motor
caravans & boats in accordance with EN 50291-1:2010+A1:2012 & EN 50291-2:2010
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1. Read This First
• Congratulations on becoming the owner of an Ei Carbon Monoxide Alarm. This
will help protect you and your household from the dangerous effects of Carbon
Monoxide- the silent killer.
• The Carbon Monoxide Alarm (CO Alarm) is powered up by carefully rotating it
onto the mounting plate which activates the on/off switch. The indicator lights
will immediately flash in sequence to show they are working. (For the Display
models, the LCD screen will briefly display all icons). Then wait 15 seconds after
connecting the power before button testing.
• The Power light is not illuminated during standby. This light will flash green
when the test button is pressed to indicate that power is present and Alarm is
functioning.
• Install a CO Alarm in every room that contains a fuel burning appliance,
particularly rooms where people spend a lot of time e.g. bedrooms, kitchens and
sitting rooms.
• In rooms with an appliance, install (preferably) on the ceiling, (300mm from walls)
and between 1m to 3m horizontally from appliance. In rooms remote from the
appliance install at ‘head height’, where the light indicators can be seen.
• Test the Alarm weekly by pressing and holding the test button for a few seconds.
• Replace Alarm when the “REPLACE UNIT BY” date has been reached. Check
the label on the side of the Alarm.
• Do not fit Alarm until all building work is completed to avoid contamination.
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2. Carbon Monoxide – The Silent Killer
2.1 What is Carbon Monoxide ?
Many people are killed each year, and many more suffer ill health from Carbon
Monoxide (CO) poisoning. CO is an invisible, odourless, tasteless and extremely
toxic gas. It is produced by appliances and vehicles burning fuels, such as coal, oil,
natural/bottled gas, paraffin, wood, petrol, diesel, charcoal etc. CO is absorbed by
red blood cells in the lungs in preference to oxygen - this results in rapid damage
to the heart and brain from oxygen starvation.
High levels of CO in a house can be caused by:
• Incorrectly or poorly installed fuel-burning appliances.
• Blocked or cracked chimneys/flues.
• Blocked vents or draught-proofing which makes areas with fuel burning
appliances or fireplaces airtight.
• Engines of cars, lawnmowers etc. left running in confined spaces.
• Portable paraffin or gas heaters in badly ventilated rooms.
2.2 What happens when your CO Alarm detects Carbon Monoxide ?
When the Alarm detects potentially dangerous levels of CO, it flashes the red
alarm light immediately and then sounds a loud alarm if the CO persists. Table B
shows how the CO Alarm reacts to different levels of CO gas and exposure time. At
higher levels of CO the Alarm turns on sooner. The rate of flashing of the red light
indicates the level of CO. If your CO Alarm sounds follow the instructions in section
6. NEVER IGNORE THE ALARM !
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2.3 Symptoms of Carbon Monoxide Poisoning
Table A
Concentration
of CO in Air
ppm
35 The maximum allowable concentration for continuous exposure in any
8 hour period according to OSHA *.
150 Slight headache after 1.5 hours.
200 Slight headache, fatigue, dizziness, nausea after 2-3 hours.
400 Frontal headaches within 1-2 hours, life threatening after 3 hours, also maximum
parts per million in flue gas (on an air free basis) according to US Environmental
Protection Agency.
800 Dizziness, nausea and convulsions within 45 minutes. Unconsciousness within
2 hours. Death within 2-3 hours.
1,600 Headache, dizziness and nausea within 20 minutes. Death within 1 hour.
3,200 Headache, dizziness and nausea within 5-10 minutes. Death within 25-30 minutes.
6,400 Headache, dizziness and nausea within 1-2 minutes. Death within 10-15 minutes.
12,800 Death within 1-3 minutes.
ppm = parts per million
*OSHA Occupational Safety & Health Association
Inhalation Time (approx) and Symptoms Developed
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2.4 Pre-Alarm
When the Alarm detects over 43 ppm CO the red light flashes in accordance with
Table B. This helps locate CO leaks as the CO Alarm gives an indication straight
away.
(Without this feature the CO level would need to be at 43 ppm CO for typically
72 minutes for an alarm sound to be given). Note the Pre-Alarm signal may be
triggered by CO coming for example, from cooking with gas, from car engines or
from nearby barbecues. This is usually not a concern, unless the pre-alarm signal
persists until the Alarm sounds and the CO source is unknown.
The display models will display CO concentrations greater than 10ppm in
accordance with Table B.
NOTE: The CO Alarm may sound if cigarette smoke is blown into it, or aerosols
are released nearby.
2.5 CO Alarm Memory
The CO Alarm memory is an important feature of the CO Alarm where even if the
house is unoccupied during an alarm condition it warns the homeowner that the CO
Alarm has previously detected CO gas and been in alarm. The memory feature has
two operation modes:
- memory indication for 24 hour period after alarm.
- memory recall on demand
24 hour memory indicators: After alarm, the RED light will flash at different rates
every minute (approx) depending on the level of CO detected - see Table C.
Memory recall on demand: To review the memory status after initial 24 hours,
press and hold the test button, the red led will flash in accordance to Table C.
Display models will show the peak level of CO measured.
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150
150
100
100
060
060
Red Light Display Icon
Sounder
(before horn sounds)(Pre Alarm) (Alarm)
Display Icon
(after horn sounds)
CO Gas Level
0 < ppm < 10 ppm
* unless it has alarmed previously (see CO Alarm Memory below)
ppm values shown in table are for example purposes only
Off* Blank Blank Off
10 < ppm < 30 ppm
Off* Off
Off
Off*
PPM level
PPM level (flash)
on - 4 seconds,
off - 12 seconds
PPM level (flash)
on - 4 seconds,
off - 12 seconds
PPM level
on within 60-90 mins
(typ 72 mins)
on within 10-40 mins
(typ 18 mins)
2 flashes
every 2 secs
on within 2 mins
(typ 40 secs)
4 flashes
every 2 secs
1 flash
every 2 secs
30 < ppm < 43 ppm
43 < ppm < 80 ppm
80 < ppm < 150 ppm
> 150 ppm
Table B: CO Alarm Response
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Reset Memory: Hold down the test button until the red light stops and the green
Table C: CO Alarm Memory Indicators
CO Gas Level
ppm > 43 ppm
2 flashes every minute (approx)
ppm > 80 ppm
4 flashes every minute (approx)
ppm > 150 ppm
8 flashes every minute (approx)
Red Light Response
24 Hours
On Demand (Button Press)
2 flashes
4 flashes
8 flashes
light starts flashing. Cover the horn with a cloth to muffle the alarm during this time.
Please note that the memory will also be reset when the CO Alarm is switched off.
3. Where to place CO Alarms
3.1 Ideally a Carbon Monoxide Alarm should be installed in:
- Every room containing a fuel burning appliance, and
- Remote rooms where occupants spend a considerable amount of time
- Every bedroom
However if the number of Carbon Monoxide Alarms to be fitted is limited, the
following points should be considered when deciding where best to fit the alarm(s)
- If there is an appliance in a room where people sleep, place a CO Alarm in
this room
- Locate a CO Alarm in a room containing a flueless or open-flued appliance, and
- Locate an Alarm in a room where the occupant(s) spend most of their time (e.g.
sitting room)
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- In a bedsit, the CO Alarm should be placed as far away from the cooking
appliance as possible, but near to where the person sleeps
- If the appliance is in a room not normally used, such as a boiler room, the CO Alarm
should be placed just outside the room so that the Alarm will be heard more easily.
3.2 Unsuitable Locations
Do not place the CO Alarm in any of the following areas.
(1) In the immediate vicinity of a cooking appliance (keep it at least 1 metre
horizontally from it).
(2) Outside the building.
(3) In an enclosed space (e.g. in or below a cupboard).
(4) In a damp or humid area.
(5) Directly above a sink or cooker.
(6) Next to a door, window, air vent or anywhere that it would be affected by
draughts.
(7) Next to an extractor fan.
(8) Over heat sources such as radiators or hot air vents.
(9) Where it would be obstructed, e.g. by curtains or furniture.
(10) In an area where the temperature could drop below -10°C or rise above 40°C.
(11) Where dirt or dust could block the sensor.
(12) Where it could be easily knocked or damaged, or where it could be accidentally
turned off or removed.
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