Bellman & Symfon BE1555, Manual

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18 19
EN
150 mm
300 mm CO alarm CO alarm
1–3 m
1–3 m
Dead air,
don’t locate
here
Figure 1
Room with a fuel
burning appliance
Figure 2
Rooms with sloped
ceilings
Figure 3
Bedrooms/rooms remote from source
300 mm CO alarm
CO alarm
Breathing
level
Caravans and boats
Caravans and boats may have additional risks of carbon monoxide ingress through air vents
due to the nearby presence of other vehicles, engines, generators or barbecues, however this
does not change the basic guidance on location of the alarm. Caravans and boats should be
fitted with an alarm in the same room as any combustion appliance(s), located in accordance
with the Location and positioning section. lf the caravan or boat has a single living space
which incorporates the sleeping accommodation, it can be considered to be equivalent to
a bedsit, and a single alarm is sufficient. However, any sleeping accommodation which is in
a separate room from the combustion appliance(s) should also contain an alarm, located in
accordance with Figure 3 .
Choosing locations in caravans and boats
It is not always possible to find an optimum location for an alarm, for example, a small car-
avan or boat may not have suitable vertical surfaces available. Nevertheless, when fitting
an apparatus in such situations, the two most important considerations when selecting
an appropriate location are:

not mounting the apparatus directly above a source of heat or steam; and

mounting the apparatus at a distance of 1 – 3 meters from the nearest edge of the
potential source.
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 interferent and may give rise to alarms. Hydrogen can arise from some
battery charging activities and also the curing of concrete under certain circumstances.