Inspection and maintenance 11
0020224355_00 HOME Installation and maintenance instructions
23
11.4
Setting the CO
₂
content
Conditions
: The CO
₂
content must be adjusted
1
▶
Turn the screw
(1)
to set the CO
₂
content (value with
front casing removed).
◁
To increase the CO
₂
content: Turn anti-clockwise
◁
To decrease the CO
₂
content: Turn clockwise
▶
Only carry out the adjustment in increments of 1/8 turn
and wait approximately 1 minute after each adjustment
until the value has stabilised.
▶
Compare the measured value with the corresponding
value in the table.
Setting the CO
₂
value
Great Britain
Removed front cas-
ing/installed front
casing
Natural gas
G20
CO
₂
at full
load
9.2
±
0.2 %
Set for
Wobbe
index W
₀
14.09 kW
⋅
h/m
³
O
₂
at full
load
4.5
±
1.8 vol. %
CO at full
load
≤
250 ppm
CO/CO
₂
≤
0.0027
▽
If the setting is not in the specified adjustment range,
you must not start up the product.
▶
Inform Customer Service.
▶
Check whether the air-quality requirements with regard
to carbon monoxide are fulfilled.
▶
Install the front casing.
11.5
Removing the gas-air mixture unit
Note
The gas-air mixture unit consists of three main
components:
–
Ventilator
–
Gas valve,
–
Burner cover
1.
Switch off the product via the main switch.
2.
Close the gas isolator cock.
B
A
1
C
2
3.
Push the clip
(1)
upwards.
4.
Remove the flue pipe
(2)
.
3
4
5
A
B
5.
Remove the air intake pipe
(3)
.
6.
Remove the plugs from the gas valve
(4)
and from the
fan
(5)
.
Summary of Contents for home combi
Page 51: ......
