Air Pressure Switch - Finterm Joannes G 50/2 Manual De Instrucciones De Manejo Y Mantenimiento

SEAL CONTROL DEVICE VPS 504
By request it is possible to supply a seal control to
apply to MULTIBLOC set.

AIR PRESSURE SWITCH

The air pressure has the task of locking the bur-
ner when the combustion air is lacking; it must be
set at 15% less than value of the air pressure in
the burner when this is at normal input with
working at the 1st stage; and in any case it must
be set at such a value to guarantee the stop of the
burner before having a carbon monoxide (CO)
output superior to 10.000 ppm.
Remove the cover and operate on the disk.
GAS PRESSURE SWITCH (pictures
11-12)
The setting of the gas pressure switch
has to be effected by the nut shown in
the picture in such a way that, in case of
gas supply pressure reduction the gas
pressure switch stops the burner only
during the low gas pressure phase; as
soon as the pressure gets normal the
burner starts again.
Tightening the nut will increase and
loosening the nut will decrease the
intervention pressure.
At the end of the setting fix the nut by
the screw.
N.B. The pressure switch has to be set
40% lower than the value of the gas
pressure obtained during maximum
flow rate operation.
WARNING
As soon as the gas pressure measurement has
been completed, the screw inside the pressure
tap fitting shall be carefully tightened.
IONISATION CURRENT CONTROL
The minimum value of 5µA shall be respected and
it shall not show strong oscillations.
11
FIG. 11
FIG. 12
FIG. 13