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For others countries follow the relevant local rules for:
Gas board rules
Building regulations and local fire prevention provisions
Safety norms in force
Provisions of the Gas supplying company
The Electrical Norms in force
The Fire Brigade rules.
Fumes evacuation
Type "A1" gas appliances
The deep fat fryers are type A1 gas appliances and it is not necessary to connect 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
3
/h per KW of gas output
installed).
Type “B21” gas appliance
These appliances must be
connected in one of the
following ways:
Natural evacuation
Connection to reliable chimney with natural pull, interposing a pull device, letting out the
products of combustion directly outside.
Direct forced evacuation
Connection to a chimney with forced pull, putting in a pull device, letting out the products of
combustion directly into the external environment. The energy supply to the appliance must be
controlled by the system of forced evacuation and must be interrupted if its capacity falls below
the values prescribed by the norms in force. Restarting the gas supply must only be done
manually.
Forced evacuation under hood
In this case, the fume evacuation device of the appliance must be brought to a height of 1.8 m
from floor level, and the outlet section of the evacuation pipes for products of combustion must
be placed inside the base perimeter of the hood. The energy supply to the appliance must be
controlled by the system of forced evacuation and must be interrupted if its capacity falls below
