Setting The Air/Gas Ratio (Part Load) (Inicontrol) - DeDietrich C 330 ECO Installation, User And Service Manual

5. Commissioning
3
O
M
"


56
5. If this rate does not match the required value, correct the gas/air
ratio using the adjustment screw A on the gas valve unit. The
A
direction in which the adjustment screw must be turned to increase
or decrease the gas flow is indicated on the gas block.
6. Check the flame through the flame inspection window.
O /CO control and setting values at full load for G20 (Gas H)
2 2
C330 ECO
All versions
(1) Nominal value
A
T003480-G
5.4.4.
1. Unscrew the plug of the flue gas measurement point.
2. Connect the flue gas analyser.
3. Set the boiler to part load. Press keys A and B simultaneously.
The symbol ) appears. Press the [-] key until l3 is displayed.
4. Measure the percentage of O
bar
9
1
2
The flame must not be detached.
O (%)
2
4,3 - 4,8
CAUTION
The CO values when operating at full load must be higher
2
than the values when operating at low load.
Setting the air/gas ratio (Part load)
(IniControl)
WARNING
Ensure that the opening around the sensor is completely
sealed when taking measurements.
2
The 5 to 9 section boilers are supplied with a different gas
block from the 10 section boiler. See drawing for the
position of control screw B for a low load.
C 330 ECO - C 630 ECO
CO (%)
2
(1) (1)
9,0 - 9,3
or CO in the flue gases.
2
31/05/2012 - 7600532-01