16
12
Connecting the Flue (continued)
must only be cut at the male end and it must be ensured that the distance between the inner and outer flue are kept (Fig. 13).
When utilising the vertical flue system, action must be taken to ensure that the flue is supported adequately to prevent the
weight being transferred to the appliance flue connection.
When the flue passes through a ceiling or wooden floor, there must be an air gap of 25mm between any part of the flue system
and any combustible material. The use of a ceiling plate will facilitate this. Also when the flue passes from one room to
another a fire stop must be fitted to prevent the passage of smoke or fire, irrespective of the structural material through which
the flue passes.
Fig. 18
Fig. 17
Fig. 19
Minimum offset distance when using 2x 45
o
bends
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