Ariston Type C Instructions d'installation et d'entretien - Page 34
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3.6.3 G
AS REGULATION CHECK
F
. 3.30
IG
3
2
1
S
P
UPPLY
RESSURE
G20 methane
17-25 mbar
A
/
IR
GAS RATIO SETTING
Calibration values check
CO
at maximum power
2
after 4 minutes of operation
methane G20
A
/
IR
GAS RATIO SETTING
Calibration values check
CO
at minimum power
2
after 4 minutes of operation
methane G20
34
Supply pressure check
1. Loosen screw "1" (Fig. 3.31) and conect the pressure gauge
2. Turn the boiler on at maximum power, enabling the "flue
3. When the check is over, tighten screw "1" and make sure it is
4. Disable the test mode by pressing the reset key.
A
4
Air/gas ratio at minimum power
To check the air/gas ratio at minimum power, proceed as follows:
1. Connect the combustion analyser to the analysis point (Fig.
2. Turn the boiler on at minimum power via the test function
3. When the check is over, replace the cap on screw "2" (Fig.
4. Disable operation at minimum power by pressing the RESET
Air/gas ratio at maximum power
To check the air/gas ratio at maximum power, proceed as
1. With the combustion analyser already connected to the
F
. 3.31
IG
2. Disable the test mode by pressing the RESET key.
3. Repeat the air/gas ratio at minimum power check (see
4. Disconnect the analyser, remount the cover plate and check
% vol
8,7 ±0.2
% vol
9,2 ±0.2
connection pipe into the test point.
sweep" function (press the RESET key for 5 seconds and
press the programming keys + and - together). The supply
pressure should correspond to that shown for the type of gas
the boiler is designed for methane gas G20.
securely in place.
/
IR
GAS RATIO CHECK
3.30) after removing the cover plate.
(see paragraph 3.6.1) or by pressing RESET key for 5
seconds and the programming key - on the control panel.
Ensure the CO
value on the analyser corresponds with the
2
value indicated in table 4D. If this is not the case, adjust
screw "2" (Fig.3.31) with a screwdriver, after removing the
cap, until you obtain the correct CO
reading to become stable for at least 4 minutes.
3.31).
key.
follows:
analysis point, set the boiler to maximum power via the test
function (see paragraph 3.6.1) or enabling the "flue sweep
function" by pressing the RESET key for 5 seconds and the
programming keys + and -.
Ensure the CO
value on the analyser corresponds with the
2
value indicated in table 4D. If this is not the case, adjust
screw "4" with a screwdriver (Fig. 3.31), until you obtain the
correct CO
reading. Allow the reading to become stable for
2
at least 4 minutes.
The test mode is automatically disabled after 5 minutes.
above).
it is securely in place.
reading. Allow the
2