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Note: Hot air ducts cannot be connected directly to a double flow ventilation system. The
temperature of the air is very high and could damage the exchanger.
1.3.
Decompression air.
Decompression air is the air that circulates between the appliance and the casing.
When the appliance is installed in a casing designed to withstand high temperatures and
made exclusively of fire-resistant materials, decompression is not necessary.
In other cases, it is essential to cool the casing down through natural air circulation, i.e.
decompression air.
In order to guarantee this air circulation, it is necessary to supply:
- An air inlet at the bottom of the cladding of 200 cm² effective;
- An outlet with an equivalent cross-section above, ideally located 20 to 30 cm below ceiling
level;
- A 5 cm free space around the stove.
1.4.
Chimney flue.
Prescriptions
The chimney flue must be built following best practice. In addition, to ensure the appliance
works properly, the following rules must be followed.
The minimum height is 4m (distance between connection and outlet).
The flue must not have more than 2 elbows (changes of direction). The offset angles
(compared to vertical) must be a maximum of 45°.
The cross-section of the flue must be greater than or equal to the cross-section of the stove
outlet.
In case of the Infire 740 Easy, a reduction of 20% of the nominal diameter is allowed for a
vertical configuration of minimum 6 meters (while keeping the original section over the
longest possible length).
The chimney flue must be protected from cold and humidity. It is recommended to insulate
the flue (or choose an insulated flue) with a high temperature resistant material to prevent
the fumes from cooling down too quickly and thus causing condensation.
The flue must make annual maintenance possible(soot removal).
The entire length of the flue pipe, from the stove to the outside, must:
- be tight,
- be clean and well-maintained (soot-removal),
- be stable and properly fixed
- be of a section compatible with the smoke outlet diameter of the stove.
