Biasi ActivA Plus Service Manual page 34

12 Turn on the boiler, switching on the fused spur isolation
switch.
13 Open the gas inlet valve.
14 Turn on the boiler and operate for 2 minuets to pre-heat the
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Figure 11.5
15 To enter in the parameters setting mode press contemporary
the 3 keys (G - H - I Figure 11.5) for 10 second until the dis-
play shows Figure 11.6.
Figure 11.6
Checking the minimum gas valve setting in domestic hot
water mode
16 Press keys G and H (Figure 11.5) at the same time until the
display shows the letters LP that alternate with the heating
water temperature value (e.g. 45), indicating the activation of
the "chimney sweep function" at minimum output (Figure 11.7).
Figure 11.7
17 Allow the analyser to give a stable reading.
18 Read the CO % value. It should be between:
2
Model Type gas
Activ A Plus 25C
Natural (G20)
Activ A Plus 30C
Propane (G31)
Activ A Plus 35C
To adjust the CO % value remove the brass plug by unscrewing
2
it and rotate the Allen key screw ø 4 mm (C - Figure 11.2) (by
rotating it clockwise the CO
- 34 -
G
H
I
CO % value (range)
2
8,7 - 9,3
9,4 - 10,4
% increases).
2
GAS VALVE
Checking the minimum gas valve setting in heating mode
19 Press key G to vary the output in chimney sweep mode: when
the display shows the letters hP that alternate with the heat-
ing water temperature value (e.g. 32), the "chimney sweep
function" is at minimum power during heating (Figure 11.9);
Figure 11.8
20 Allow the analyser to give a stable reading.
21 Read the CO
Model
Activ A Plus 25C
Activ A Plus 30C
Activ A Plus 35C
Activ A Plus 16S
Activ A Plus 25S
To adjust the CO
it and rotate the Allen key screw ø 4 mm (C - Figure 11.2) (by
rotating it clockwise the CO
Checking the maximum gas valve setting in heating mode
22 Press key G to vary the output in chimney sweep mode: when
the display shows the letters cP that alternate with the heat-
ing water temperature value (e.g. 78), the "chimney sweep
function" is at maximum output in heating mode (Figure 11.9);
Figure 11.9
23 Allow the analyser to give a stable reading.
24 Read the CO2 % value. It should be between:
% value. It should be between:
2
Type gas CO
Natural (G20)
Propane (G31)
Natural (G20)
Propane (G31)
Natural (G20)
Propane (G31)
% value remove the brass plug by unscrewing
2
% increases).
2
% value (range)
2
8,7 - 9,3
9,4 - 10,4
8,7 - 9,3
9,4 - 10,4
8,7 - 9,5
9,2 - 10,2