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Ei Electronics Ei204 User Instructions

Download User instructions of Ei Electronics Ei204 Smoke Alarm for Free or View it Online on All-Guides.com.

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What to do when the Alarm sounds:

(1) Open the doors and windows to ventilate.

(2) Turn off the appliance where possible and stop using

the appliance. (The alarm can be silenced immediately by

pushing the test/hush button if level is below 150ppm CO).

(3) Evacuate the property leaving the doors and windows

open.

(4) Ring your gas or other fuel supplier on their emergency

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, nau

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sea), and advise that carbon monoxide poisoning is sus-

pected.

(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

(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 a few min

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utes once the CO has cleared. Pressing the test /hush but

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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 due to the increased danger). If

CO is still present the red alarm light and horn will turn on

again after 5 minutes.

Warning: The CO Alarm is no substitute for keeping chim

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neys and flues clear and in good condition, and all of your

appliances serviced regularly according to the manufac

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turer's instructions.

2.1 What is Carbon Monoxide ?

Congratulations on becoming the owner of an Ei Carbon Mon

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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 heart and brain from oxygen starvation.

High levels of CO in a house can be caused by:

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Incorrectly or poorly installed fuel-burning appliances.

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Blocked or cracked chimneys/flues.

l

Blocked vents or draught-proofing which makes areas with

fuel burning appliances or fireplaces airtight.

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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

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hold.

Mild Exposure:

Slight headache, nausea, vomiting, fatigue (of

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ten described as “flu-like” symptoms).

Medium Exposure:

Severe throbbing headache, drowsiness,

confusion, fast heart rate.

Extreme Exposure:

Unconsciousness, convulsions, car

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diorespiratory failure, death.

A high level of CO for a short period (e.g. 350 ppm CO for 30

minutes) will cause the same symptoms, a slight headache, as a

lower level for a longer time (e.g. 150 ppm for 90 minutes). Table

A shows how exposure to different concentrations of CO gener

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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 are unable to save themselves by either leav

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ing the building or calling for assistance. Young children and

household pets may be the first affected.

2.3 What happens when your CO Alarm detects Carbon

Monoxide ?

When the Alarm detects dangerous levels of CO, it sounds a

loud alarm and flashes the red alarm light.

Table B shows how the built in microcontroller 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 in

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dicates the level of CO.

35 The maximum allowable concentration for continu

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ous exposure in any 8-hour period according to

OSHA *.

150 Slight headache after 1½ 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 Environ

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mental Protection Agency.

800 Dizziness, nausea and convulsions within 45 min

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utes. 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.

* OSHA Occupational Safety &

Health Assocation

s

ppm = parts per million

Table A: Effects of Cumulative CO Exposure

ppm

s

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READ THIS FIRST

Carbon Monoxide - The Silent Killer

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(Cont.)

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CO Level

ppm

Horn & red

light on within

Red

Alarm Light

Time to first

Symptom

*

——

off

0

150

Flashes every 2 sec

30 min

90 min

30 min

6 min

Flashes every ½ sec

350

——

Table B: CO Alarm Response

s

Slight Headache

*

Inhalation Time (approx)

and Symptoms Developed

Concentration of

CO in Air

s

ppm = parts per million

(max)