LA NORDICA Termo Isotta DSA Instructions For Installation, Use And Maintenance Manual page 31

Termo ISOTTA – DSA
If the flue is too large (e.g. cm 30x40 or 40x50) it is necessary to duct it with a stainless steel tube of at least 200 mm
of diameter, pos. B taking care to close the space between the tube itself and the flue immediately below the chimney
cap pos. C .
Picture 11
7199701 Rev.05 – EN
For further information please contact your Dealer.
C - Plugging
B
A – Hermetic closure
Inspection
hatch
31