Sime Aqua INOX Serie Manual De Instrucciones página 56

S resulting section in cm
K reduction coefficient for liquid
fuels: 0.024
P boiler input in Kcal/h
H height of the flue in meters mea-
sured from the flame axis to the
flue outlet into the atmosphere.
When dimensioning the flue, the
ef fective height of the flue in
meters must be considered,
measured from the flame axis to
the top of the flue, reduced by:
– 0.50 m for each change of
direction of the connection
union between boiler and flue;
– 1.00 f or each hor izont al
metre of the union itself.
Our boilers are the B
23
not need any particular connections
other than the one to the flue as
described above.
2.4 FUEL ADDUCTION
The fuel can be fed into the thermal
group sideways, the ducts must be
passed through the aperture on the
right or left hand side of the shell for
connection to the pump (fig. 5 - 5/a).
Important
– Make sure, before turning on the
boiler, that the return tube is free.
An excessive counter -pressure
would break the pump seal.
– Make sur e t hat t he tubes ar e
sealed.
– The maximum depression of 0.4 bar
(300 mmHg) (see Table 1 ) must not
be exceeded. Gas is freed from the
fuel above that value and can cause
cavitation of the pump.
– It's advisable to bring the return
tube in the depression systems up
to the same height of the intake
tube. In this case the foot valve is
unnecessary.
If instead the return tube arrives
above the fuel level, the foot valve is
indispensable.
Starting the pump
Turn on the burner to start the pump
and check the flame ignition.
If a "lock out" occur s before fuel
arrival, wait for at least 20 seconds
then press the burner release button
"RESET" and wait for the whole start-
up operation to repeat until the flame
54
2
type and do
9
C
ONNECTIONS
1 Vacuometer attachment
2 Pressure regulator
3 Manometer attachment
4 By-pass screw
5 Back-flow flexible pipe
ATTENTION:
- loosen the pump joints (5-6) before pointing the flexible pipes for
bringing them out from the prefixed opening on the right/left hand
side of the shell. Afterwards tighten the joints to the pump.
- The pump is prearranged for the double-tube function. Remove the
by-pass screw (4) for single tube function.
lights up.
2.5 BURNER ADJUSTMENTS
Each unit is shipped with a burner unit
10 9
(included in supply)
TABLE 1
H L (meters)
meters øi tube
8 mm
0 35
0,5 30
1 25
1,5 20
2 15
3 8
3,5 6
H = Difference in level
L = Maximum length
of the intake tube
8
7
6
6 Suction flexible pipe
(included in supply)
7 Auxiliary pressure intake
8 Valve
9 Racor 3/8" (included in supply)
10 Fuel feed line filter
(included in supply)
equipped with a nozzle and calibrated
at the factory; it is recommended,
however, that the settings listed under
point 1.3 be checked, with reference
to atmospheric pressure at sea level.
If it is necessary to adjust the burner
øi tube
10 mm
100
100
100
90
70
30
20
Fig. 5
1
2
3
4
5
Fig. 5/a