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towards the exhaust stub (cooker function – PLATE USE); when the lever is pulled towards you, the combustion gases flow all around
the oven, so the internal temperature increases evenly (cooker – oven cooking and heating – OVEN USE).
To ignite the flame follow the instructions below (see Cap. IGNITION) :
• Open the ignition register to aid flue gas exhaust. Position the register (any butterfly valve placed on the flue gas exhaust pipe must
also be opened).
• Position the thermostat knob on position 5 (maximum opening).
• Open the primary air register (placed on the ash tray).
• After having started the fire with small pieces of wood and waited until it is well lit, adjust the thermostat to the positions corresponding
to the desired heat (0÷5).
• Bring the flue gas register to the oven position.
• Close the any butterfly valve placed on the flue gas exhaust pipe must also be opened.
The register regulation necessary in order to obtain nominal calorific output is the following (see Cap. TECHNICAL DATA):
Fuel
WOOD
6. FLUE
Essential requirements for correct appliance operation:
•
the internal section must preferably be circular;
•
the appliance must be thermally insulated and impermeable and built with suitable materials which are resistant to heat, combustion
products and any condensation;
•
there must be no narrowing and vertical passages with deviations must not be greater than 45°;
•
if already used, it must be clean;
•
the technical data from the instruction manual must be respected;
If the flues are of a square or rectangular section, the internal edges must be rounded with a radius of not less than 20 mm.
For the rectangular section, the maximum ratio between the sides must be ≤ 1.5.
A section which is too small causes a reduction in draught. A minimum height of 4 m is advisable.
The following materials are FORBIDDEN and compromise the good operation of the appliance: asbestos cement, galvanised steel, rough
and porous internal surfaces.
The minimum section must be 4 dm
dm
(for example 25x25 cm) for appliances with a diameter of more than 200 mm.
2
The draught created by your flue must be sufficient but not excessive.
A section of the flue which is too large can present a volume which is too large to heat and therefore cause operating difficulties for the
appliance; to avoid this, it is necessary to intubate the appliance for its entire height. A section which is too small causes a reduction in
draught.
The flue must be at a suitably distance from flammable or combustible material using suitable insulation or an air space.
It is FORBIDDEN to pass system piping or air ducts inside the flue. It is also forbidden to create moveable or fixed openings on the flue
itself, for the connection of further different appliances (See chapter CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE).
6.1.
CHIMNEY POT
The flue draught depends on the suitability of the chimney pot.
It is therefore essential that, if built in a handcrafted way, the exit section is more than twice the internal section of the flue
(Picture 3 at page
56) .
As it must always go past the ridge of the roof, the chimney pot must ensure exhaust even in the presence of wind
The chimney pot must meet the following requirements:
•
Have an internal section equivalent to that of the chimney.
•
Have a useful exit section of double the internal section of the flue.
•
Be built so as to prevent rain, snow or any foreign body entering the flue.
•
Be easy to inspect, for any maintenance and cleaning operations.
6.2.
CONNECTION TO THE CHIMNEY
Products with automatic door closing (type 1) must operate, for safety reasons, with the furnace door closed (except during the fuel loading
or ash removal phases).
Products with non-automatic door closing (type 2) must be connected to their own flue.
Operation with doors open is only allowed when supervised.
The connection pipe to the flue must be as short as possible, straight horizontal and positioned slightly in ascent, and watertight.
Connection must be carried out with stable and robust pipes (we recommend a thickness of 2 mm) and be hermetically secured to the flue.
The internal diameter of the connection pipe must correspond to the external diameter of the cooker flue gas exhaust stub pipe (DIN 1298).
ATTENTION: as far as concern the realisation of the flue connection and flammable materials please follow the requirements provided by
UNI 10683 standard. The flue must be properly spaced from any flammable materials or fuels through a proper insulation or an air cavity.
IMPORTANT: the unused flue gas exhaust hole must be covered with its respective cap (See chapter: DIMENSIONS).
The chimney pressure (DRAUGHT) must be at least (=1.7-2 mm of water column). The measurement must always be carried out when
the appliance is hot (nominal calorific power). When the pressure exceeds 20 Pascal, it is necessary to reduce it through the installation of
an additional draught regulator (false air valve) on the exhaust pipe or in the chimney, according to the regulations in force.
For correct appliance operation, it is essential that sufficient air for combustion is introduced into the place of installation (see paragraph 7).
6.3.
CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE
The flue gas channel is the stretch of piping which connects the thermo-product to the flue. In the connection, these simple but extremely
22
PRIMARY air
CLOSED
Picture 2 at page 56
shows some example solutions.
(for example 20x20 cm) for appliances whose pipe dimensions are less than 200 mm, or 6.25
2
SECONDARY air
OPEN
TERMOROSA - DSA
TERTIARY air
Pre-adjusted
(Picture 4 at page
57).
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