Checking The Burner Ignition - Biasi RIVA COMPACT HE M96.24SM/C2 User Manual And Installation Instructions

Commissioning
lowed to ensure maximum operating efficiency
from the boiler.
1 Remove the front panel of the case (see sec-
tion 9.2 in this manual).
2 Loosen the internal screw 41 (Fig. 7.4) on the
Outlet Pressure Test Point of the Gas Valve and
connect a pressure gauge using a suitable
hose.
3 Set the d.h.w. and c.h. temperature control
knobs to their maximum position. If external
controls are fitted (e. g. Timeclock, room ther-
mostat) ensure they "call for heat".
4 Switch on the boiler and open at least one hot
water tap fully.
5 Check the maximum gas pressure and com-
pare the value on the gauge with the value indi-
cated in the sections 4.5 or 4.6 (gas pressures
at the burner), accordingly with the model of
boiler installed.
6 Check the maximum gas flow at the gas meter
and compare the value indicated in the sec-
tions 4.5 or 4.6 (gas rate), accordingly with the
model of boiler installed.
7 Switch off the boiler.
8 Disconnect the gas modulator coil by remov-
ing the electrical connector A (Fig. 7.4).
41
Fig. 7.4
9 Switch on the boiler.
10 Check the minimum gas pressure and com-
pare the value on the gauge with the value indi-
cated in the sections 4.5 or 4.6 (gas pressures
34
at the burner), accordingly with the model of
boiler installed.
11 Switch off the boiler and re--- connect the elec-
trical connector A to the modulator coil.
12 Switch on the boiler.
13 Check that the boiler lights up uniformly.
If not refer to section "Ignition gas pressure ad-
justment" of the Service Manual for the necess-
ary adjustment procedures.
14 Switch off the boiler, turn off the hot water tap(s)
and disconnect the pressure gauge.
If the maximum and minimum gas pressures
measured above are not in accordance with the
technical data (sections 4.5 or 4.6) then adjust-
ment will be necessary. A full explanation of the
gas pressure adjustment procedure is given in
the Gas Valve section of the service manual. If
maximum and/or minimum gas pressures are
adjusted then the ignition gas pressure must
be checked and adjusted if necessary.
Important: after the gas pressure checks and
any adjustment operations, all of the test points
and adjustment devices must be sealed. Re-
place the adjustment protection cap.
7.8

Checking the burner ignition

1 Turn the boiler OFF
2 Open the gas valve outlet pressure test point
41 (Fig. 7.4) and connect the gauge.
3 Turn the boiler ON positioning the control se-
lectors 8 in the positions as shown in as in
Fig. 7.5 and ensure that the timer selector
switch and room thermostat, if fitted, are set to
"heat demand".
10 9
A
Fig. 7.5
4 Watch the gauge and check to see if the igni-
tion pressure registered corresponds to the va-
lues as given in the Technical Data. Turn off the
boiler and reignite it by turning the function se-
8 7 6