Content, Natural Gas Type A; Content, Natural Gas Type A (Minimum Output); Levels; Checking And Monitoring Co Level At Maximum Output - Buderus LOGANO PLUS GB312 Installation Instructions Manual

7
Commissioning the heating system
7.11.1 CO

content, natural gas type A

2
If CO content is below 8,5 %.
2
▶ Adjust the level to 9,1 % CO using the high-output adjusting screw.
2
– Turning clockwise will reduce the CO
– Turning the screw counter-clockwise increases the CO
1
Fig. 44 Checking the CO setting at full load
2
[1] High-output adjusting screw
7.12 Adjusting and checking CO
▶ Set to 30 %.
▶ To do so, press and hold the
the status display lights up (at least 2 seconds).
This turns on the flue gas test.
▶ Simultaneously press and hold the
approx. 5 seconds.
At the factory setting, the display shows "
▶ Press the button to reduce the boiler output to a percentage of
maximum until the display shows "
▶ Read off output on RC35 or using Service Key.
▶ Wait until the output drops to 30 %.
110
100 120
90 130
Eco 140
Aut
Fig. 45 Setting medium output
36
level.
2
level.
2
7 747 010 720-52.2RS
level at minimum output
2
button until the decimal point on
and buttons for
".
".
130
110
150
90
170
190
Aut
7 747 010 720-42.2RS
7.12.1 CO

content, natural gas type A (minimum output)

2
If CO content is below 9,0 % or above 9,5 %.
2
▶ Adjust the level to 9,1 % CO using the low-output adjusting screw.
2
– Turning the screw clockwise increases the CO
– Turning the screw counter-clockwise reduces the CO
7.12.2 Reading off and comparing CO
▶ After reading off the CO level or adjusting on the Monitor readings/
2
Burner menu, read off the flame ionization current and compare with
the specified levels.
Fig. 46 Checking CO setting at medium output
2
[1] Low-output adjusting screwGas valve: Honeywell V4730C
[2] Cap screw
7.13 Checking and monitoring CO
output
▶ Press the button to increase the boiler output to a higher
percentage.
▶ Read off output on RC35 or using Service Key.
▶ Wait until at least 70 % of the load is reached.
▶ Check CO content again.
2
▶ Read off flame ionization current (and compare with the specified

levels).

7.14 Recording measured values

▶ Take the following readings at a testing point on the flue pipe and
record them in the commissioning log ( Section 7.20, page 39):
– Flue pressure
– Flue gas temperature t
A
– Carbon dioxide content (CO
– Carbon monoxide content (CO)
Logano plus GB312 – 6 720 647 367 (2012/11)
level.
2
level.
2
levels
2
2
1
7 747 010 720-51.2RS
level at maximum
2
)or oxygen content (O )
2 2