Biasi M135.30CM, Инструкция по установке и эксплуатации, Страница: 37 / 52

RIVA PLUS COMBI MANUAL 37
15. Commissioning Cont.
Adjustment of the gas pressure: 15.4
Remove the front panel of the case. •
Take off the lid of the sealed chamber. •
Open the gas valve inlet pressure test •
point (16 in Fig. 15.5) at the valve input,
connect a suitable pressure gauge and
check the gas pressure of the supply net-
work.
Remove the gauge and close the pres-
•
sure test point 16.
Open the gas valve outlet pressure test
•
point (15 in Fig. 15.5) and connect the
gauge.
•
Figure 15.5
Remove the protection cap I (Fig. 15.7) •
from the mechanical pressure adjustment
components levering with a fl at screw-
driver in the slots H.
Start the boiler at its maximum power.
•
Figure 15.6
Ensure that the boiler is not range rated. •
Rotate the maximum gas pressure adjust- •
ment (F in Fig. 15.5) until you obtain the
required pressure (by rotating clockwise
the pressure increases).
Turn the boiler off and disconnect one of
•
the two connectors (E in Fig. 15.5).
Start the boiler and rotate the minimum gas
•
pressure adjustment (G in Fig. 15.5) until
you obtain the required pressure (by rotat-
ing clockwise the pressure increases).
Turn the boiler off and re-connect the wire
•
to the modulating operator.
Start the boiler and check again the maxi-
•
mum gas pressure setting.
Turn the boiler off and disconnect the
•
gauge.
Close the lid of the sealed chamber.
•
Important: after the checks all of the test
points must be sealed.
Checking the ignition device: 15.5
With the burner on high fl ame close the gas cock. After three ignition attempts (within about
three minutes), the lock-out signal lamp must appear (D on Figure 15.3). To reset the boiler
turn the knob B (fi gure 15.3) on the 0 position and then press and release the boiler reset but-
ton (C on Figure 15.3).