Daikin Altherma EHYKOMB33AA Installations- Und Bedienungsanleitung Seite 33

INFORMATION
The gas boiler is configured for operation with gas type
G20 (20 mbar). However, if the gas type present is G25
(25 mbar), the gas boiler can still be operated without
modification.
About the CO₂ setting
The CO setting has been set in the factory and in principle requires
2
no adjustments. The setting can be checked by measuring the CO
percentage in the combustion gases. In case of possible disturbance
of the adjustment, replacement of the gas valve or conversion to
another gas type the adjustment must be checked and if necessary
set according to the instructions below.
Always check the CO percentage when the cover is open.
2
To check the CO₂ setting
1 Switch off the heat pump module with the user interface.
2 Switch off the gas boiler with the
service display.
3 Remove the front panel from the gas boiler.
4 Remove the sampling point (a) and insert a suitable flue gas
analyser probe.
INFORMATION
Make sure the start-up procedure of the analyser is
completed before inserting the probe into the sampling
point.
INFORMATION
Allow the gas boiler to operate steadily. Connecting the
measuring probe before stable operation can give incorrect
readings. It is recommended to wait at least 30 minutes.
5 Switch on the gas boiler with the
heating demand.
6 Select High setting by simultaneously pressing
Capital will appear on the service display. The user interface
will display Busy. Do NOT test when lowercase
this is the case, press and
7 Allow readings to stabilise. Wait for at least 3 minutes and
compare the CO percentage with the values in the table below.
2
CO value at maximum Natural gas
2
power
Maximum value
Minimum value
8 Note down the CO percentage at maximum power. This is
2
important with regard to the next steps.
EHYKOMB33AA
Daikin Altherma hybrid heat pump – gas boiler module
4P353067-1L – 2022.09
button. appears on the
a
button and create a space
and twice.
is displayed. If
again.
Natural gas Propane P
G20 G25 G31
9.6 8.3 10.8
8.6 7.3 9.8
CAUTION
It is NOT possible to adjust the CO
program is running. When the CO
from the values in the table above, please contact your
local service department.
9 Select Low setting by simultaneously pressing
once. will appear on the service display. The user interface
will display Busy.
10 Allow readings to stabilise. Wait for at least 3 minutes and
2
compare the CO percentage with the values in the table below.
2
CO value at maximum
2
power
Maximum value
Minimum value
(a)
CO value at maximum power recorded at High setting.
2
11 If the CO percentage at maximum and minimum power is
2
within the range expressed in the tables above, the CO
of the boiler is correct. If NOT, adjust the CO
to the instructions in the chapter below.
12 Switch off the appliance by pressing the
sampling point back in its place. Make sure it is gastight.
13 Put the front panel back in its place.
CAUTION
Work on gas carrying parts may ONLY be carried out by a
qualified competent person.
To adjust the CO₂ setting
INFORMATION
Only adjust the CO
and are sure adjustment is necessary. In Belgium, any
modifications to the gas valve MUST be performed by a
certified representative of the manufacturer. For more
information, contact your dealer.
1 Remove the cap that covers the adjustment screw. In the
illustration, the cover cap is already removed.
2 Turn the screw (a) to increase (clockwise) or decrease
(counterclockwise) the CO
the desired value.
a
a Adjusting screw with cover
Measured value at
maximum power
10.8
10.6
10.4
10.2
10.0
9.8
12 Configuration
percentage when test
2
percentage deviates
2
and
Natural gas Natural gas Propane P
G20 G25
(a)
8.4 7.4
setting according
2
button and put the
setting when you have checked it first
2
percentage. See the table below for
2
Adjustment values CO (%) at
2
minimum power (front cover opened)
Natural gas 2H/2E Propane 3P (G31,
(G20, 20 mbar) 30/50/37 mbar)
— 10.5±0.1
10.3±0.1
10.1±0.1
9.9±0.1
9.8±0.1
9.6±0.1
Installation and operation manual
buttons
G31
9.4
setting
2
33