30
Instructions for the installer
fig. 29
tagliare
=
=
L
L
USEFUL SUGGESTIONS and LOADING ERRORS TO BE
AVOIDED
- Logs too long do not fall down properly and can cause
„bridges“.
- Logs too short cause irregular air passages, with consequent
reduction in output and efficiency.
- In case the quality of the wood causes „bridges“ it could
become necessary to cut the wood logs in two parts, as shown
in fig. 29, in order that the total length “L” is as indicated in the
previous paragraph.
- Always open the upper door slowly, in order to avoid blowbacks
and smoke formation.
- During normal boiler operation it is absolutely forbidden
to open the lower combustion chamber door.
4.7 - COMBUSTION AIR ADJUSTMENT
PRIMARY AND SECONDARY AIR ADJUSTMENT
The AIREX boiler has a combustion air intake
fan (POS. 7 fig. 2), a distribution collector of the
combustion air (POS. 1 fig. 27) and regulators of
primary air (POS. fig. 27) and secondary air (POS.
S fig. 27).( N°2 fan for the models AIREX 65 2S
and AIEREX 80 2S + N°2 collectors for primary
and secondary air inlet) with their air adjustment,
see fig.28)
At first start you need to adjust the primary and secondary air,
bearing in mind that the primary air determines the power of
the boiler and therefore the amount of wood that is burned,
and the secondary air completes the combustion.
For a proper air adjustment it is necessary to observe the
flame through the flame sight glass placed on the lower door.
The flame will have to fill about two-thirds of the lower combu-
stion chamber and will have to lick the bottom cradle quietly,
without dragging too much ash and without noise. The flame
will have an orange-pink-white colour; will be not too clear and
with the center tending to blue.
To carry the flame in optimum conditions you should then
adjust the primary air by turning the knob (pos. P). Similarly it
will be done for the secondary air (pos. S).
Example n.1
Thick, wet wood logs = difficult combustion
S - Very closed: try to get the maximum dimension of the flame,
but not of a reddish colour.
P - Reasonably open in order to obtain a sufficient gasification.
Example n. 2
Very inflammable wood logs
S - Completely open.
P - Slightly closed in order to keep reduced the gasification,
but sufficiently open to evacuate the ash that can close the
combustion head.
Cut
