Instruction manual

REGULATION INSTRUCTIONS
CONDENSING BOILOES WITH STORAGE - TG05A095.A0306
41
5.4 Regulating the stepped ignition sequence
Each time the appliance is started up, in
order to provide optimum ignition and an
even flame distribution over the entire
surface of the burner, a stepped ignition
sequence is used. This consists of an
instantaneous and brief increase in the gas
pressure during the ignition phase only.
The correct setting for the appliance can be
checked as follows (fig. 1):
a. With the appliance switched on, open
the control panel and expose the electric
fan modulation board (see “6.3
Accessing the boiler”).
b. Connect the terminals of a frequency
meter to the appropriate terminal board
(
1).
c. Move jumper CM1 (2) to cover both pins
in order to close the circuit.
d. Check that the frequency indicated is 80
Hz for G20 or 110 Hz for G30/G31.
e. If the frequencies do not coincide (the
type of gas is different to that for which
the boiler has been factory set) adjust
the potentiometer screw P2MIN (
3) until
the rating plate value is reached.
f. Remove jumper CM1 and replace it in its
original position (circuit open).
g. Switch off the appliance, disconnect the
frequency meter and close the control
panel.
h. Restart the appliance.
P2 MIN
CM1
CM1
P2 MIN
BA
M9
M10
M12
M8
M11
M7
M13
M4
M1M2
M5
M3
M4
M6
2
3
1
to
frequency
Fig. 1
FREQUENCY METER