Automatic Calibration Of The Gas Valve - Biasi RINNOVA ADAPTIVE M300V.2025 SM Service Manual

13 Open at least one hot water tap fully.
E
Figure 11 .4
14 To enter in the parameters setting mode press at the same
time the 2 keys "E" and "G" (Figure 11.4) and hold in for 5
second until the display shows Figure 11.5.
Figure 11 .5
15 Scroll the various menus using keys "E" or "G" (Figure 11.4)
until Ch5 (Chimney sweep) appears on the LCD display (Fig-
ure 11.6).
16 To enter the selected menu press key "F" (Figure 11.4) for 1
second.
Figure 11 .6
17 The letters LP, alternating with the minimum heating water
temperature (e.g. 45), appear on the screen indicating the
activation of the "chimney sweep function" at minimum power
(Figure 11.7).
Figure 11 .7
18 Allow the analyser to give a stable reading.
19 Compare the value of CO
the one in the "Data in D.H.W. mode" table and the values of
CO at Q .min . given in the table Gas supply pressures, of the
2
user/installation manual.
Checking the maximum gas valve setting
20 Press key "G" to vary the output in chimney sweep mode:
when the display shows the letters dP (chimney sweep ac-
tive in maximum D.H.W. mode) that alternate with the heat-
ing water temperature value (e.g. 60), the "chimney sweep
- 32 -
G
F
read on the flue gas analyser with
2
GAS VALVE
function" is at maximum output in domestic hot water mode
(Figure 11.8).
Warning: If the boiler has a correct CO
LP but is incorrect CO
boiler ensure the supply pressure is within accept-
able limits!
Figure 11 .8
21 Allow the analyser to give a stable reading.
22 Compare the value of CO
the one in the "Data in D.H.W. mode" table and the values of
CO at Q .nom . given in the table Gas supply pressures, of
2
the user/installation manual.
If the two values do not coincide with the value shown in the
table Gas supply pressures, of the user/installation manual, exit
programming mode by pressing the "F" key for 5 seconds and
carry out the "Automatic calibration of the gas valve" page 32.
23 Switch off the boiler and turn off the hot water tap(s).
24 Close the air-flue sampling points.
Important: after the gas pressure checks and any adjust-
ment operations, all of the test points must be sealed .

11 .4 Automatic calibration of the gas valve

When replacing the panel board, the fan or gas valve, or param-
eter P01 on the control board is changed, the gas valve must be
calibrated in order to carry out CO
output.
1 Connect a flue analyser to the flue gas analysis outlets on the
flue gas exhaust on the boiler (Figure 11.3).
2 Turn on the boiler and operate for 2 minuets to pre-heat the
flue, before commencing any adjustments.
3 Make sure that the room thermostat is in the "heat request"
position.
4 Open at least one hot water tap fully.
Figure 11 .9
in dP before adjusting the
2
read on the flue gas analyser with
2
calibration at maximum boiler
2
H
I
reading in
2
J