Baxi MULTI-HEAT - User Experiences; Recommended Adjustment of Operation

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If the flame is short and blue, either the interval time or the air quantity must be reduced.
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If the flame is long and reddish-yellow, either the interval time or the air quantity must be
reduced.
Colour of the flue gas
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If the flue gas is black or dark-coloured, this is because the combustion is getting insufficient air.
The flue gas must be white or light-coloured or completely transparent.
1.8.2 This is how the uppermost and lowest doors must be opened:
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When opening the doors you ought, for the sake of safety, to stand so that the doors are between
you and the boiler opening.
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Open the door approx. 2 cm. - Wait for approx. 20 seconds. - Open the door slowly.
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If the boiler is fitted with oxygen control, the door may not be open for more than max. 1 min.
without disturbing the control's operation.
1.9 User experiences
By means of regular (daily) supervision at the beginning, you will obtain an indication of how often you
must fill up the hopper as well as removing ashes from the combustion chamber.
There must always be enough fuel in the magazine to keep it from running dry.
The risk of back-burning is increased if the magazine runs out of fuel and/or fuel other than that specified
in section 1.1.1 is used.
NB: Poorer fuel gives more problematic operation.
Wood pellets composed of pure wood residues produce comparatively little ash.
Grain is more difficult and time-demanding due to greater contents of non-combustible constituents
(salts) which form ash and often also cinders. The quantity depends, amongst other things, on the growth
conditions of the grain, its chemical composition and the extent of the fuel consumption.
If the indications in these guidelines are followed and if the surroundings of the boiler are kept more or
less clean you will, as a rule, be ensured a problem-free operation of the plant.
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1.10 Recommended adjustment of operation
The values shown below are guidelines - check flame colour and smoke colour - see section 1.8.2. If the
colour is not correct, modify the adjustment until a satisfactory colour is achieved.
Large heat requirement Small heat requirement