MCZ Yari AIR - Manual (Page 29)

Figura 1
Figura 2
27
5 - MODE AND SETTINGS
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VIEW OF THE FLAMES
In order to get proper operation from the stove, you need to be able to interpret the appearance of the flame.
Characteristics which the user should take into consideration are basically the following:
• The shape
• The colour
• The quality
The shape
In normal combustion the flame should have a tapered shape (fig.1), a "lively" quality, as wide as the brazier it is issued from and with
the tips of the flames basically vertical or pushed towards the back of the firebox. You should get the impression that the flame is being
"drawn" upwards and not pushed forwards against the glass on the door.
Conversely, a flame which swells outwards at the base, beyond the measurements of the brazier, with a "thin" quality, with a point that
appears to wander, hitting the glass (Fig.2), could be a symptom of bad setting as regards loading of the fuel and/or extraction of the
fumes, or could indicate that the flue is obstructed or that there are down-draughts which impede proper evacuation of the smoke.
In this case there will ALWAYS be operating problems. Request assistance from specialized personnel or advice from MCZ technicians.
The colour
The colour is in some ways linked to the shape of the flame. A colour which varies from orange to yellow, with dark tips to the flame, is
liable to be a swollen flame (as described above), lacking in oxygen or at least indicative of faulty combustion. As the colour changes
towards light yellow - white, the shape of the flame alters, becoming thinner and showing the presence of higher levels of oxygen.
The quality
Liveliness or weakness is in any case closely connected to the shape of the flame.
NORMAL COMBUSTION
Shape: Tapered, vertical,
compact
Quality: Lively
Colour: Yellow - Light yellow
- White
INCORRECT COMBUSTION
Shape: Swollen, overflowing,
not compact
Quality: Weak - feeble
Colour: Orange - Yellow