Aico Ei225E User Instruction
1.
Open unit by sliding cover up as shown in figure 1. Then
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remove the terminal block cover screw.
What to do when the Alarm sounds:
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READ THIS FIRST
(Cont.)
(1) Open the doors and windows to ventilate.
(2) Turn off the appliance where possible and stop using
the appliance.
pushing the test/hush button if the level is below 150ppm CO).
(The alarm can be silenced immediately by
(3) Evacuate the property leaving the doors and windows
open.
(4)
Telephone your gas or other fuel supplier on their emer
gency number; keep the number in a prominent place.
(5) Do not re-enter the property until the alarm has
stopped. (If the alarm has been silenced by pressing the
test/hush button, wait at least 5 minutes so the alarm can
check that the CO has cleared).
(6) Get medical help immediately for anyone suffering the
effects of carbon monoxide poisoning (headache, nausea), and advise that carbon monoxide poisoning is suspected.
(7) Do not use the appliance again until it has been
checked by an expert. In the case of gas appliances this
must be a CORGI registered installer.
When the CO Alarm detects abnormal levels of CO
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(above 150ppm CO for 30 minutes) the horn sounds and
the red light starts to flash. At higher levels of CO the
alarm will turn on sooner (see table B).
The CO Alarm will automatically reset within about 4 min
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utes once the COhascleared. Pressing the test /hush but
ton resets the CO Alarm immediately if it has sensed
about 150ppm CO (the unit cannot be silenced if the level
is about 350ppm CO). If CO is still present the red alarm
light and horn will turn on again after 4 minutes.
WARNING: The CO Alarm is no substitute for keeping
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chimneys and flues clear and in good condition, and all of
your appliances serviced regularlyaccordingto the manu
facturer’s instructions.
Do not fitalarm until all building work iscompleted to avoid
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contamination.
TERMINAL
BLOCK
COVER
SCREW
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Carbon Monoxide - The Silent Killer
2.
PRESS HERE
FIRST AND
SLIDE UP
GAS SENSOR
POSITION
Figure 1
2.1 What is Carbon Monoxide ?
Congratulations on becoming the owner of an Ei Carbon Mon
oxide Alarm. This will help protect you and your household from
the dangerous effects of carbon monoxide - the silent killer (CO
is the chemical symbol).
Many 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
or 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 heartandbrainfrom oxygen starvation.
High levels of CO in a house can be caused by:
l
Incorrectly or poorly installed fuel-burning appliances.
l
Blocked or cracked chimneys/flues.
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l
Blocked vents or draught-proofing which makes areas with
fuel burning appliances or fireplaces airtight.
l
Engines of cars, lawnmowers etc. left running in confined
spaces.
l
Portable paraffin or gas heaters in badly ventilated rooms.
2.2 Symptoms of Carbon Monoxide Poisoning
Most people know that high levels of CO are harmful, however
the period of exposure is also important.
The following symptoms are related to carbon monoxide poi
soning and should be discussed with all members of the house
hold.
Mild Exposure:
Slight headache, nausea, vomiting, fatigue (of
ten described as “flu-like” symptoms).
Medium Exposure:
Severe throbbing headache, drowsiness,
confusion, fast heart rate.
Extreme Exposure:
Unconsciousness, convulsions, car
diorespiratory failure, death.
A high level of CO for a short period (e.g. 350 ppm CO for 30
minutes) will cause the samesymptoms,a slight headache, as a
lower level for alongertime (e.g. 150 ppm for 90minutes).Table
A shows how exposure to different concentrations of CO gener
ally affects people.
Many cases of reported carbon monoxide poisoning indicate
that while victims are aware they are not well, they become so
disorientated they areunable to save themselves byeither leav
ing the building or calling for assistance. Young children and
household pets may be the first affected.
Table A: Effects of Cumulative CO Exposure
Concentration of
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CO in Air
s
ppm
35 The maximum allowable concentration for continuous
exposure in any 8-hour period according to OSHA *.
150 Slight headache after 1½ hours.
200 Slight headache, fatigue, dizziness, nausea after 2-3
400 Frontal headaches within 1-2 hours, life threatening
800 Dizziness, nausea and convulsions within 45 minutes.
1,600 Headache, dizziness and nausea within 20 minutes.
3,200 Headache, dizziness and nausea within 5-10minutes.
6,400 Headache, dizziness and nausea within 1-2
12,800 Death within 1-3 minutes.
s
ppm = parts per million
hours.
after 3 hours, also maximum parts per million in flue
gas (on an air free basis) according to US Environmental Protection Agency.
Unconsciousness within 2 hours. Death within 2-3
hours.
Death within 1 hour.
Death within 25-30 minutes.
minutes. Death within 10-15 minutes.
2.3 What happens when your CO Alarm detects Carbon
Monoxide ?
Inhalation Time (approx)
and Symptoms Developed
* OSHA Occupational Safety &
Health Association
When the Alarm detects dangerous levels of CO, it sounds a
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loud alarm and flashes the red alarm light.
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3
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Table B: CO Alarm Response
CO Level
ppm
0
50
150
350
Table B shows how the built in microprocessor reacts to differ
ent 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 followtheinstructionson page 2.
When ventilation is provided by leaving the windows and doors
open, the CO build up may have dissipated by the time help ar
rives and the alarm may have stopped sounding. Although your
problem may appear temporarily solved it is crucial that the
source of the CO is determinedandappropriaterepairs made.
Pre-Alarm: When the alarm detects over 50ppm CO the red
light flashesevery 5 seconds. This helps locate CO leaks as the
unit gives an indication straight away. (Without this feature the
CO level would need to be at 150ppm CO for up to 30 minutes
for an indication to be given). Note the Pre-Alarm signal may be
triggered by CO coming for example, from cooking with gas,
from car enginesor from nearby barbecues. This isusually not a
concern unless the Pre-Alarm signal persists for over an hour
and the CO source is unknown.
NOTE:
into it or aerosols are released nearby.
Horn on
within
Off
Off
30 min
6 min
Slight Headache
*
NEVER IGNORE THE ALARM.
The CO Alarm may sound if cigarette smoke is blown
Red
Alarm Light
Off
Flashes every 5 sec
Flashes every 2 sec
Flashes every ½ sec
Status
Stand-by
Pre-Alarm
Alarm
Alarm
CO Alarm Memory:
This tells you if the unit has detected CO in your absence and
helps to detect and locate leaks, monitor premises etc.
When the test button is pressed the horn sounds and the indica
tor lights flash as follows:-
- Red LightisOff if no CO is detected since reset or power-up.
- Slow Flashing Red Light (every 2 seconds) if 150ppm CO
has been detected since power-up.
- Fast FlashingRed Light (every ½second) if 350ppm CO has
been detected since power-up.
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Reset Memory by holding down the test button for over 20 sec
onds until the redlight stops flashing. Cover the hornwith a cloth
to muffle the alarm.
Where to place CO Alarms3.
3.1 Suitable Locations
Ei Electronics recommends that the advice of the Health &
Safety Exectutive (HSE) UK is followed as this is based on re
search done at the BRE subsequent to the issuing of the BS
7860 : 1996 standard.
The Health & Safety Executive (HSE) UK, give the following
recommendations for rooms where CO alarms should be lo
cated - these are in order of priorty:
- In rooms with flueless or open flued appliances
- In rooms where the occupant spends most time
- In bedrooms
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Figure 2
Bedroom*
Kitchen*
* If they contain or are near a fuel-burning appliance
British Standard BS7860:1996 gives the following advice:
Ideally you should have a detector in or near every room that
contains a fuel-burning appliance.
However, if you have more than one appliance, but only one de
tector, you should take thefollowingintoconsideration when de
ciding where best to put the detector.
(1) If there is an appliance in the room where you sleep, you
should put the detector in that room.
(2) If there is an appliance in a room that you use a lot, e.g. a sit
ting room, you should put it in that room.
(3) If you live in a bedsit, put the detector as far away from the
cooking appliances aspossible, but near tothe place where you
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Sitting
Room
sleep.
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(4) If the appliance is in a room not normally used (e.g. a boiler
room), put the detector just outside the room so that you will be
able to hear the alarm more easily.
Ideally you should have a detector in or near every room that
contains a fuel-burning appliance.
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3.2 Unsuitable Locations
Do not place the CO Alarm in any of the following areas.
(1) Within 1.85 metres (6 feet) of the appliance.
(2) Outside the building.
(3) In or below a cupboard.
(4) In a damp or humid area.
(5) Directly above a sink or cooker.
(6) Next to a door or window or anywhere that it would be af
fected by draughts.
(7) Where it would be obstructed by curtains or furniture.
(8) In an area where the temperature could drop below -5 ° Cor
rise above 40 ° C.
*
(9) Where dirt or dust couldblockthesensor and stop it working.
(10) Where it could be easily knocked or damaged, or where it
could be accidently turned off or removed.
(11) In a bathroom or where the CO alarm may be exposed to
water splashes or condensation (e.g. aboveanelectrickettle).
(12) Near paint, thinners, solvent fumes or air fresheners.
3.3 Installation
The HSE, UK gives more detailedrecommendationsasfollows:
If locating the CO Alarm in a room with an appliance:
- the alarm should be located between 1m and 3m horizontally
from the appliance. (To comply with both BS & HSE advice lo
cate between 1.85 and 3.0m from appliance).
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- the alarm should be located preferably on the ceiling. Ceiling
mounted detectors should be at least 300mm from any wall.
- if placed on a wall the CO Alarm should be as high as possible
(higher than doors and windows) but not within 150mm of the
ceiling.
If locating the CO Alarm in a room remote from the appli
ance:
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