9 Start-up
28
Installation and maintenance instructions MicraCom 0020289288_02
9.6.6
Checking the CO
₂
content
1
1
1
1.
Open the test opening at the flue gas analysis point
(1)
.
2.
Position the sensor for the CO
₂
analyser in the centre of
the flue pipe.
3.
Start up the product with check programme
P.01
.
4.
Wait at least five minutes until the product reaches its
operating temperature.
5.
Measure the CO
₂
content at the flue gas analysis point
and log the measured value.
Checking the CO
₂
content
Great
Bri-
tain
Fitted front
casing
Natural gas
H
9.2
±
1 %
Liquefied petro-
leum gas
P
10.6
±
0.5 %
Result 1:
If the value is outside of the permitted range:
▶
Measure the CO
₂
content at the flue gas analysis
point again and log the measured value.
▶
If the value is still outside of the permissible range,
do not start up the product and, instead, report this
to customer service.
Result 2:
If the value is inside the permitted range:
▶
Continue with the process of starting up the product.
6.
Remove the sensor for the CO
₂
analyser and close the
test opening at the flue gas analysis point.
9.6.7
Performing a gas conversion
2
1
1.
Press the on/off button
in order to switch off the
product.
◁
The display shows
oF
and then goes out.
2.
Disconnect the product from the power grid.
3.
Remove the plug
(1)
.
4.
To convert the gas type, turn the screw
(2)
by the spe-
cified number of rotations clockwise (
↻
) or anti-clock-
wise (
↺
).
Setting the gas valve assembly
H
→
P
Clockwise rotation
Three re-
volutions
P
→
H
Anti-clockwise rotation
Three re-
volutions
5.
Check the CO
₂
content and adjust this. (
6.
Set diagnostics code
d.85
in order to adjust the pro-
duct's minimum output. (
Setting diagnostics code D.85
24c-AS/1
28c-AS/1
H
→
P
9 kW
8 kW
P
→
H
6 kW
7 kW
1
7.
Mark the gas type that is used on the gas conversion
sticker.
8.
Stick the gas conversion sticker
(1)
to the electronics
box.