Royal DORA AIR Installation And Maintenance Manual page 72

GRAZIA
2
1) Wind-proof cowl
2) Seal
3) Inspect
72
If the chimney has a larger section, it
must be "intubated" with a suitably in-
1
sulated steel pipe (with diameter suita-
ble for the route (Fig. 26 - Fig. 27).
Make sure that the connection to the brickwork
chimney is properly sealed.
In case of pipes that pass through
wooden roofs or walls, it is recommend-
ed to use special certified ducting kits
commonly available on the market.
3
DORA
Fig. 25
1) Non-combustible material
2) Steel piping
3) Closing panel
1
2
3
004778391 - 23/09/2021
Fig. 26