Compact Gas Duct With Top Chimneys - ABB UniGear ZS1 Instruction Manual

Figure 97: Openings on top of the gas duct.
Figure 99: Top cover of top chimneys.

5.8.3 Compact gas duct with top chimneys

In order to mount the compact gas duct with top chimneys must be followed the operations described
for the compact gas duct.
The difference between the two solutions is that in this case there are no side exits, but the gas
generated from an internal arc goes out from the duct through the top chimneys located on the top part
of the gas duct on each panel.
On the top of the gas duct there are two openings (figure 97); for each opening it must be fix the net
and the nr.6 spacers (figure 98).
At this point it is possible to fix the top cover with nr.12 M8 screws.
Figure 98: Net and spacers of top chimneys.
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