MONOBLOCCO 400 PIANO - 500 ANGOLO – 800 ANGOLO / Dx - Sx

7. CONNECTION TO THE FLUE / AIR FOR COMBUSTION (air intake)
Monoblocco 400 Piano – 500 / 800 Angolo
Stiff aluminized steel pipes a minimum of 2 mm in thickness or 316 stainless steel pipes a minimum of 1 mm in
thickness must be connected to the stack.
It is FORBIDDEN to use flexible metal or asbestos cement pipes as they are not entirely safe, being liable to
tear or break and thereby cause smoke to leak out.
The smoke exhaust pipe must be hermetically sealed onto the stack and
can be at a maximum inclination of 45° to avoid exc essive build-up of
condensate produced during the initial start-up phases and/or excessive
build-up of soot, and moreover it avoids slowing down smoke out-flow.
A non-hermetic connection could compromise the device’s working order.
The connection pipe’s internal diameter must be the same as the external
diameter of the device’s smoke stub pipe. This is ensured by using pipes
compliant with DIN 1298.
1000 cm 2
Depression in the stack should be 14 Pa (mod.400 – 1,4 mm column of
water) - 12 Pa (mod.500/800 - 1,2 mm column of water).
The measurement must always be carried out when the device is hot (rated
thermal performance).
You need to reduce depression when it exceeds 17 Pa (1.7 mm column of
water) by installing an additional draught regulator.
IMPORTANT: Only use metal pipes insulated with proper materials
(fibre insulation coating resistant to temperatures up to 600°C) to
avoid deterioration of the walls or counter-hood.
The space between the upper part, the sides of the device and the hood’s
fireproof deflector (at the base of the flue) must be constantly ventilated.
There must therefore be an intake of air from the bottom (intake of fresh air)
and a raised outlet (outlet for hot air).
The air circulation spaces indicated in Picture 16 are the minimum
requirements.
Top: minimum opening 1000 cm 2
Base: minimum opening 750 cm 2
This ensures:
• Improved safety
• Increase in heat created by circulation of air around the device.
ATTENTION: The fireproof plasterboard counter-hood should preferably be
fitted with a self-supporting metal frame to prevent it from weighing too
heavily on the aesthetic coating (marble).
The heat vent grating (Picture 18 pos. 6) has to be installed on the upper
part of the hood at about 20 cm from the ceiling. This must always be
installed as its function is to release heat collected within the hood
(overpressure) out into the room.
7.1. EXTERNAL AIR INTAKE
There must be sufficient quantity of air for combustion and re-oxygenation
of the room to ensure the device will work properly. There should therefore
be vents letting air in from outside the building and enabling circulation of
air for combustion even when the doors and windows are closed.
• The air intake must be in a position where it cannot be
obstructed.
• The air intake should communicate with the room in which the device is installed and be protected with a
grille.
• Vents may communicate with adjacent rooms but not with garages, kitchens, bathrooms or boiler rooms.
• Any extractor hoods in the room where the device is installed must not operate at the same time as this
could cause smoke to enter the room, even with the fireplace’s door closed.
Minimum dimensions:
A – natural convection: 300 cm 2
B – forced convection: (Picture 13):
150 cm 2 external air intake for the stack;
150 cm 2 external air intake for the fan;
150 cm 2 internal air intake for the fan
Picture 16
750 cm 2
10 cm min post. e laterale Mod 600
min 6 cm gap at back and
sides
Picture 17
24 6098401 Rev.09 – EN