Ei208W/Ei208DW Stand-alone carbon monoxide detector
MZZ25008
1
Ei208W/Ei208DW stand-alone carbon monoxide detector
The product serves for the detection of CO (carbon monoxide) gas and
early warning to avoid the harmful effects of this gas on human health.
The detector is certificated for use in building interiors, caravans and
boats.
The detector indicates excessive carbon monoxide concentration both
optically with a LED (Ei208DW also shows the concentration data on the
display) and acoustically using a built-in siren.
The detector is powered with an integrated lithium battery which supplies
the detector for its whole service life.
Fig. 1: 1 – warning LEDs; 2 – test button; 3 – information display (Ei208DW only)
Origin of carbon monoxide and its effects on
the human organism
CO (carbon monoxide) is a very dangerous gas which is poisonous even
in small concentrations. It is generated by imperfect combustion of fossil
fuels (natural gas, petroleum, coal, wood). The gas is colourless, tasteless
and odourless. Therefore, it cannot be detected by the human sense and
there is a great danger of intoxication of the human organism with this gas.
The main carbon monoxide sources:
−
incorrectly installed or poorly set fuel-burning appliances (gas, coal,
fuel oils and wood)
−
blocked, poorly maintained or damaged chimneys
−
combustion engines running in confined spaces
−
portable paraffin or gas heaters in confined or badly ventilated rooms
Effects of carbon monoxide on the human organism depending on the
inhalation time and CO concentration in the air
CO
concentration
(ppm)
Inhalation time and symptoms developed
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
Strong frontal headache after 1- 2 hours. Life is
threatened after 3 hours
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
The same concentration of CO may have a different effect on persons
with varying body weight or who are weakened by an illness.
Warning:
The CO detector may not prevent the chronic effects of carbon
monoxide exposure, and the apparatus will not fully safeguard individuals at
special risk.
Detector range and location
Ideally, the carbon monoxide detector should be installed in every room
containing a possible source of carbon monoxide (boilers, fireplaces, local
heaters, etc.). It is also recommended to install the carbon monoxide
detector in the rooms where occupants spend considerable amounts of
time and bedrooms where they sleep.
Rooms with possible
sources of carbon
monoxide and level
ceilings. Installation
above the upper
edge of any window
or door. At least 15
cm from the ceiling.
Installation on the
ceiling at least 30 cm
from the walls.
Rooms with possible
sources of carbon
monoxide and sloped
ceilings.
Bedrooms and other
rooms remote from
possible sources of
carbon monoxide.
Installation at the
approximate height of
1 to 2m in the
expected breathing
zone of the
occupants.
1 – unsuitable location; 2 – recommended location
Avoid installing the detector in the following locations:
−
in the immediate vicinity of heat sources (keep it at least 1 metre
horizontally from any heat source)
−
in an enclosed space (e.g. in a cupboard)
−
above a bath, a washbasin or heat sources
−
next to a door, a window, an air vent or anywhere where it would be
affected by draught
−
in places where free circulation of air is obstructed (e.g. behind curtains
or furniture)
−
in places with high levels of dust, humidity or in places where it would
be subjected to water or steam.
−
in places with high levels of paint, thinner or solvent fumes or close to
air fresheners
−
in places where it could be easily damaged or accidentally knocked or
turned off
Warning:
Do not use the detector as a portable device or on an intermittent
basis.
Interfering Substances
−
The apparatus should not be exposed to excessive amounts of fumes
from petrol, diesel, solvents, greases, alcohols and organic cleaning
fluids.
−
The apparatus may respond to brief exhaust gas emissions e.g. during
initial start-up of an appliance or engine.
−
Hydrogen acts as an interferon and may give rise to alarms.
Installing the detector
When installing the detector, abide by the procedures recommended in the
previous paragraphs.
Warning:
The Installation of this CO Alarm should not be used as a
substitute for proper installation, use and maintenance of fuel burning
appliances including appropriate ventilation and exhaust systems.
In addition the CO detector must be installed by a competent person
Installation steps:
1) Open the detector by turning it anti-clockwise
2) Attach the base to the selected place using
screws.
3) Insert the detector into the plastic base and
secure it by turning it clockwise
4) Once you have inserted and secured the
detector, it is switched on automatically with a
built-in switch located in the detector body
5) If the detector is OK, all three LEDs will flash
briefly in sequence and all symbols on the
display (Ei208DW) will light up.
Fig. 2
