MCZ FC700-715 - 180+180 m3/h - Manual (Page 10)

Chapter 2
INSTALLATION AND USE MANUAL
page
10
Installation and assembly Technical service – MCZ S.p.A. all rights reserved - Reproduction prohibited
2.5.4. Ducts for kit VF 180 m
3 /h (Airsystem B70)
Differently from the kit VF 480-620 m 3 /h, the kit VF 180 m 3 /h does not
require ducts, since the lower power of the fans and their position
with respect to the fireplace stove allow proper operation of the system
provided a considerable quantity of air is provided under the unit.
Considering that this type of fireplace is normally set in an internal wall
of the home and it is almost never possible to provide ducts to the
outside of the home as with the previously described model, the
ventilation air must all be drawn from the room of installation, using the
air intakes on each side of the cladding
It is necessary to provide two air intakes with a net minimum section
of 150 cm 2 on both sides of the cladding that allow a continuous
exchange of oxygen under the fireplace stove (figure 9).
If the air intakes are not sufficient, the fans will also
draw the air required for combustion, and this will
compromise proper operation of the product.
DIAGRAM OF AIR INTAKES ONLY FOR MODEL AIRSYSTEM B70
Fire bed Fire bed
Ventilation
and combustion
air intake grille
Ventilation
and combustion
air intake grille
It is advisable to use two grilles of at least 20x10 cm
Remember that:
• All of the air intakes must be equipped with shutters than can
be controlled from the outside and that are equipped with
insect protection.
• The air intake section is considered net, therefore the area of
any obstructions must be considered (mesh, etc.)
• The filters or meshes need to be cleaned periodically to ensure
air can pass through them.
• Do not for any reason obstruct the air intakes if the
fireplace stove or ventilation kit is in operation
Figure 9 - Air intake grilles for ventilation and combustion air