Adjusting Primary And Secondary Combustion Air; General Advice - Sime PIROEMME Serie Manual De Instrucciones

LOADING ERRORS (fig. 9)
- Pieces that are too long do not drop
down regularly and cause "bridges".
- Pieces that are too shor t cause
irregular drafts, resulting in a lower
output and performance.
- If the wood quality causes "bridges",
you may also need to load pieces
divided int o two and ar r anged
longitudinally so that the overall
lengt h ("L") is in line wit h t he
instructions reported in 5.4.
To prevent "bridges" from forming,
we do not recommend placing the
logs along the side walls of the wood
storage area (fig. 9).
- Open the top door. Again, do this
slowly to avoid puffs of air and smoke
from forming.
- Dur ing oper ation it is s tr ictl y
prohibited to open the bottom door.
5.5 ADJUSTING PRIMARY
AND SECONDARY
COMBUSTION AIR (fig. 10)
The boiler has an exhaust fan for
combustion air and primary air (pos. P)
and secondary air regulators (pos. S).
When the equipment is started up for
the first time, it is necessary to adjust the
primary and secondary air. Bear in mind
that primary air determines the output of
the boiler and therefore the amount of
wood that is burnt and secondary air
completes the combustion process.
Here below are the optimal settings
for primary and secondary air when
using good quality wood (beech) with a
low water content (moisture 15%).
BOILER PRIMARY
MODEL AIR
(P)
notch posit.
PIROEMME 4 7
PIROEMME 5 6,5
PIROEMME 6 6
PIROEMME 7 5.5
However, to adjust the air correctly
based on the wood used and its actual
moisture content, it is necessary to
look at t he f lame t hr ough t he
inspection hole on the bottom door.
The flame must fill about two-thirds of
the lower chamber and must easily
touch the lower cradle without moving
any ash or generating noise. The flame
must be orange-pink-white. It must not
be too clear and must tend towards
light blue at the centre. Therefore, to
bring the flame to optimal conditions,
it is necessary to adjust the primary
18
P
S
SECONDARY
AIR
(S)
notch posit.
4.5
4
air by turning the knob (pos. P) and the
5.5
same applies for secondary air (pos.
6
S).
Example 1: Large pieces of damp
wood difficult to burn
S - Firmly closed (try to create a flame
as big as possible, but not with a
reddish colour).
P - Slightly open to achieve enough
gasification.
Example 2: Highly flammable wood
S - Fully open.
P - Slightly closed to keep a reduced
gasif ication, but open enough t o
remove the ash that may obstruct the
combustion head.
FIRST notch
PRIMA tacca
P
EIGHTH notch
OTTAVA tacca
FIRST notch
PRIMA tacca
S
SEVENTH notch
SETTIMA tacca
5.5. 1 General
advice
-- The best performance is achieved
after two-three days of operation.
Indeed the refractory materials need
t o bur n and t he t ar mus t f or m
deposits on the upper part of the
wood storage area.
- There must be a fairly good-sized
f lame t hat f ills up t he fur nace
reasonably well.
- The flame must not be too red (not
enough secondary air S).
- The flame must not be too blue (too
much secondary air S).
- The flame must not produce too
much noise (too much primary air P).
P
S
Fig. 10