Bartscher 285.102 Mode D'emploi page 77

ƒ Codes of Practice, BS6173, 1982
ƒ The Building Regulations, 1985
ƒ The Building Standards Regulations, 1981
For others countries follow the relevant local rules for:
ƒ Gas board rules
ƒ Building regulations and local fire prevention provisions
ƒ Safety norms in force
ƒ Provisions of the Gas supplying company
ƒ The Electrical Norms in force
ƒ The Fire Brigade rules.
Fumes evacuation
The appliances are divided into two types (see Table 1 - pp. 62, 63):
Type "A1" gas appliances
It is not necessary to connect this type of appliance directly to an evacuation pipe for combustion
products. The products of combustion, however, have to be directed into suitable hoods or similar
devices, connected to a reliably efficient chimney, otherwise directly outside. if these devices are
not available, it is possible to use an extractor fan connected directly to external environment with a
capacity no lower than what is stated in table 1.
This value has to be increased with the air exchange necessary for the operators' well-being in
accordance with the norms in force (approximately a total of 35 m
installed).
Type "B11" gas appliance
These appliances have to be connected in one of the following ways:
x Natural evacuation (fig. 21 – p. 11).
Connect to reliable chimney with natural pull; interpose a pull device and let out the products of
combustion directly outside.
x Direct forced evacuation (fig. 22 – p. 11).
Connect to a chimney with forced pull; put in a pull device and let out the products of
combustion directly into external environment. The energy supply to the appliance has to be
controlled by the system of forced evacuation and it has to be interrupted in the event that its
capacity falls below the values prescribed by the norms in force.
It has to be possible to restart the gas supply only manually.
x Forced evacuation under hood (fig. 23 – p. 11).
The appliance device for fume evacuation has to be placed at a height of 1,8 m from floor level,
and the outlet section of the evacuation pipes for combution products has to be placed inside
the base perimeter of the hood. The energy supply to the appliance has to be controlled by the
system of forced evacuation and it has to be interrupted in the event that its capacity falls below
the values prescribed by the norms in force. It has to be possible to restart the gas supply only
manually.
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3
/h per KW of gas output