Flue; Chimney Pot - Nordica AMERICA Instructions Pour L'installation, L'utilisation Et L'entretien

direction of the fuel. The primary air is necessary for the combustion process. The ash drawer must be emptied regularly, so that the ash
cannot block the primary air intake for combustion. The primary air also keeps the flame alive.
The primary air register must be almost completely closed during wood combustion, as otherwise the wood burns too quickly and the
cooker may overheat.
2A - SECONDARY Air Register
On the upper part of the front side there is the secondary air register. This knob must be opened (so anticlockwise moved), especially
for wood combustion (see Table). The secondary air, passing out the double glass of the fire door, heats itself starting the double
combustion and keeping at the same time the glass clean ( with open register).
B - FLUE GAS Register (Picture 6 at page 41
(Conversion from the cooker HOTPLATE USE – OVEN USE function to the cooker HEATING function)
On the central part of the front side, there is the command bar of the smokes register which is an emailed and marked knob.
When the bar is pushed on the left of the cooker, the combustion gases flow over the oven directly into the small trunk of exhaust (cooker
function – PLATE USE); when on the contrary one pulls the lever on the right, the combustion gases flow all around the oven, so that the
internal temperature is increased in an uniform way (cooker – oven cooking and heating – OVEN USE).
C - LIGHTING CONTROL (Picture 6 at page
On the top part of the cooker, between the enamel plate and the front side, there is bar with a chromed knob. This control must only be
used to facilitate the ignition of fuel in the cooker. Pull the lever outwards from the cooker (control open).
IMPORTANT : during normal cooker operation, the control lever must remain completely inserted (pushed inwards on the cooker). In
This way avoiding excessive fuel consumption and poor cooker output (control closed)..
To ignite the flame follow the instructions below (see Cap. IGNITION) :
• Open the FLUE GAS Register (cooker function – PLATE USE) to aid flue gas exhaust. Position the register (any butterfly valve placed
on the flue gas exhaust pipe must also be opened).
• 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.
• 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):
Hourly wood consumption in kg/h
3,1

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 2 at page 38) .
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.
16
(Picture 6 at page 41).
)
41)
PRIMARY air
Picture 1 at page 38 shows some example solutions.
(for example 20x20 cm) for appliances whose pipe dimensions are less than 200 mm, or 6.25
2
SECONDARY air
CLOSED OPEN
AMERICA
SMOKES control
Cooker function
(Picture 3 at page 39).
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