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The group of attachments (fig. 2.3) is made up of:
* 1 nut "A" ( external cylindrical thread ISO 228-1)
* 1 sealing washer "D"
* 1 conical connection "B" (internal cylindrical thread ISO 228-1, external
conical thread ISO 7-1)
* 1 Butane/Propane Gas connector "C".
Cookers must be connected using RHT materials downstream from the
AGB/BGV certificated gas stop-cock, except for single unit cookers that
are not built-in.
As a general rule, cookers are connected downstream from the gas stop-
cock, by:
* copper pipes having an appropriate wall thickness, or;
* steel pipes, or;
* flexible RHT metal pipes with AGB certification, fitted in such a way that
they will not be crushed or pulled during use. Their bending radius must not
be less than that specified by the manufacturer.
Exception for single unit cookers that are not built-in.
* These cookers must be connected by a flexible elastomer hose with a
built–in undetachable mechanical nozzle. Only use those hoses that are
authorised with the label "AGB/BGV".
* Two types of flexible elastomer hoses: until April 2005, there were 2 types
of flexible elastomer hoses on the market:
* the old assymetrical model, including an end with a fixed nozzle at the side of
the cooker, and a nozzle with a loose nut and a built-in flat sealed joint at the
side of the inside fitting (stop cock).
* the new symmetrical model, including a nozzle with a loose nut at both sides,
with a built-in flat sealed joint. This symmetrical model is the only one that will
be available after the time limit.
When installing a new cooker, or replacing an existing one, the
symmetrical model must always be used.
A
D
B
Fig. 2.3
18
BE
D
C
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