FORMA WOOD CLOSED FIREPLACE
Chapter 2
USE AND MAINTENANCE MANUAL
page
8
Theoretical recommendations for installation
Technical dept. - All rights reserved by MCZ Group S.p.A. - Reproduction prohibited
IMPORTANT!
The closed fireplace must be installed and
assembled by qualified staff.
The closed fireplace must be connected to a flue
pipe or a vertical duct that can discharge the
smoke at the highest point of the home.
The closed fireplace must be connected to a flue
pipe or internal or external vertical duct, in
accordance with the applicable standards in force.
The smoke does, however, result from combustion
of wood essences and may therefore soil walls if
released in contact with or close to them.
Before positioning the closed fireplace drill the
hole for the external air inlet
2.3.
CONNECTING THE EXTERNAL AIR INLET
The room in which the closed fireplace is installed MUST provide at least
as much airflow as is required for regular combustion of the appliance and
for ventilation of the room. This can be achieved via permanent apertures
made in the walls of the room to be ventilated, leading to the outside, or
rooms aired in accordance with UNI 10683.
To achieve this drill a through hole with a minimum free cross-section of
360 cm² in the external wall near the closed fireplace (22 cm diameter or
20x18 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 this does not reduce the minimum cross-
section.
be positioned in such a way that it cannot become obstructed
if ducting is involved (up to 3.5 linear metres) increase the cross-
section by about 5%. For longer ducting increase the cross-section
by 15%.
Remember that one side of the ventilation grilles always shows
the working cross-section in cm
2
. When choosing the grille and
hole size, check that the working cross-section of the grille is
larger or the same as the cross-section required by MCZ for
operation of the appliance.
It is not obligatory to connect the air inlet directly to the closed
fireplace but the aforementioned cross-section must ensure
that approximately 50 m³/h of air is provided. See standard
UNI 10683 REV.
IMPORTANT!
The flow of air may also be taken from an adjoining
room to the one in which the closed fireplace is
installed, provided that the air can flow freely through
permanent apertures in contact with the outside. Avoid
air inlets connected to thermal power plants, garages,
kitchens or bathrooms.
