klover pellet boiler 24, User Manual

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15

Preferably circular internal section: squared and rectangular sections must have rounded
angles with radius larger than 20 mm;

Constant, free and independent internal section;

Rectangular sections with 1.5 maximum ratio between the sides;

If the flue is installed externally or in a cold room (e.g. boiler room) it is
absolutely necessary that it is insulated to avoid the flue gas cooling and
condensate forming;

Elements of non-combustible material must be used for the assembly of the flue gas
pipes (which go from the appliance to the flue inlet), which are suitable for resisting
combustion products and their condensation;

It is prohibited to use fibre cement pipes to connect the appliances to the flue;

Flue pipes must not pass through places in which the installation of combustion
appliances is prohibited;

The assembly of flue pipes must guarantee the sealing against flue gas for the appliance
operation conditions when in low pressure;

The assembly of horizontal tracts is forbidden ;

It is prohibited to use tilted elements;

The flue gas pipe must allow the recovery of soot or be cleanable and must have a
constant section;

It is prohibited to make other air intake channels and pipes for plant engineering transit
inside the flue gas pipes, even if over-dimensioned.
The chimney is a device crowning the flue, used to ease dispersion of combustion products.
It must satisfy the following requisites:

Have a useful outlet section that is not less than the double of that of the flue on which it
is inserted;

Be conformed in a way to prevent the penetration of rain and snow into the flue;

Be built in a way that, also in the case of winds from every direction and inclination, to
ensure combustion exhaust.
The outlet height (where height means that which corresponds to the top of the flue, independently of
any chimneys) must be outside of the so-called reflow area in order to prevent the formation of
counter-pressures, which prevent free exhaust of the combustion products in the atmosphere.
It is therefore necessary that the minimum heights, indicated in the following figures, are respected:
Technical
volume
0
,5
m
0
,5
m
Dista nce > 5 m
Dista nce < 5 m
Distanc e> 1,85 m
Distanc e< 1,85 m
0
,5
m
o
v
e
r
th
e
r
id
g
e
Reflow zone
1
m
m
in
im
u
m
1
5
°