Checking The Gas Supply Pressure - Biasi RIVA ADVANCE HE M110.24SM User Manual And Installation Instructions

Commissioning
The boiler will now go through an ignition se-
quence and the burner will light.
If after four ignition attempts (about four minutes)
the boiler fails to light, the boiler will go to lockout
and the lock--- out signal lamp 6 will appear.
To reset the boiler press and release the boiler re-
set button 7.
For the first lighting up and following maintenance
procedures for the gas supply, it may be necess-
ary to repeat the resetting operation several times
so as to remove the air present in the pipework.
After five consecutive resetting attempts the reset
button is inhibited. To restore its function it is
necessary to switch the boiler off and on from the
electrical mains, using the fused spur isolation
switch fitted adjacent to the appliance.
7.7 Checking the gas supply
pressure
This boiler has been tested to the highest qual-
ity control standards.
The maximum and minimum gas pressures are
already set during this quality control process
and the appliance does not need any particular
adjustment.
However if there is variation to the gas supply
pressure it is possible that a harmonic noise
could resonate through the boiler during oper-
ation. In these circumstances it maybe necess-
ary to reset the gas valve in accordance with
the section 11 Gas Valve of the Service Manual.
It should be noted that a flue gas analyser is re-
quired for this procedure.
Checking the inlet pressure
1 Remove the front panel of the case (see sec-
tion 8.2) and lower the control panel (see sec-
tion 6.9).
2 Loosen the internal screw on the Inlet Pressure
Test Point 41 (Fig. 7.5) of the Gas Valve and
connect a pressure gauge using a suitable
hose.
32
41
Fig. 7.5
3 Open the gas inlet valve (14 on page 2).
4 Turn on the electricity supply to the boiler,
switching on the fused spur isolation switch.
The appliance operation light 10 will flash
every 4 seconds.
5 Set the function knob 8 as illustrated in Fig. 7.6.
10 9
Fig. 7.6
6 Open at least one hot water tap fully.
7 Read the inlet pressure value and ensure that
it is within the limits given in the table Gas sup-
ply pressures, sections 4.3 and 4.4 of this man-
ual.
If it does not comply with the required pressure
check the gas supply line and governor for
faults and/or correct adjustment.
8 Switch off the boiler close the gas inlet valve
and close the water tap.
9 Disconnect the pressure gauge and close the
Inlet Pressure Test Point 41 (Fig. 7.5).
Important: after the checks all of the test points
must be sealed.
8 7 6