MCZ Kasai User Manual
Page 9
Chapter 2
USE AND MAINTENANCE MANUAL
page
9
Installation recommendations in compliance with UNI 10683
Technical dept. - All rights reserved by MCZ GROUP S.p.A. - Reproduction
prohibited
2.3. CONNECTING THE COMBUSTION AIR INLET
PIPE
The combustion air outlet does not necessarily have to be connected to
the outside; only if you wish to use Oyster technology do you need to
connect the combustion air inlet to the outside of the home.
Always use pipes and unions with appropriate seals
that guarantee air- and watertightness.
Products built with Oyster technology, due to their fully watertight
structure, do not draw on the oxygen inside the room. Instead, they
draw air from the outside environment and can therefore be fitted in all
well-insulated homes and in passive houses.
In order to satisfy these requirements, the 80 mm diameter connection
pipe for the combustion air inlet must be connected to the outside of
the building.
The air inlet should also:
be designed with a grille, insect-proof metal mesh or suitable
protection, provided it does not reduce the minimum cross-
section.
be positioned in such a way as to not be obstructed
the maximum length permitted for ducting is 6 m, with two 90°
elbows
The stove must be connected to the external air inlet
using pipes and unions which guarantee
watertightness to comply with the requirements of
the sealed stove (OYSTER technology).
2.4. EXTERNAL AIR INLET
It is necessary for the room in which the stove is installed to provide at
least as much air as is required for regular combustion (not in the case
of installation with Oyster technology). This can be achieved through
permanent apertures made in the walls of the room to be ventilated
onto the outside or rooms aired in accordance with UNI 10683 REV.
To this end, drill a through hole in the external wall near the stove with
a minimum free cross-section of 150 cm². (15 cm diameter or 10x15
cm rectangular hole), protected by a grille on the inside and on the
outside.
The air inlet should also:
communicate directly with the installation setting
be designed with a grille, insect-proof metal mesh or suitable
protection, provided it does not reduce the minimum cross-
section.
be positioned in such a way as to not be obstructed
Rear view of the Kasai stove:
1) Combustion air inlet