DeDietrich C 330 ECO, Инструкция по установке, эксплуатации и обслуживанию, Страница: 59 / 92

10.2.3 Checking the ionisation current
1. Check the ionisation current at full load and at low load.
The value is stable after 1 minute.
2. Clean or replace the ionisation and ignition electrode if the value is
lower than 3 µA.
10.2.4 Checking the water quality
1. Fill a clean bottle with some water from the system/boiler from the
filling/drain valve.
2. Check the quality of this water sample or have it checked.
Warning
More information regarding water quality requirements is available
in our Water quality instructions. This manual forms part of the set
of documents supplied with the boiler. Always adhere to the
instructions in the aforementioned document.
10.2.5 Checking the flue gas outlet/air supply connections
1. Check the flue gas outlet and air supply connections for condition and
tightness.
10.2.6 Checking the gas filter
The gas valve unit on the boiler is fitted with a gas filter as standard.
Check this for soiling.
1. Set the boiler to full load.
2. Measure the gas inlet pressure via the measuring point P1 on the gas
pipe.
This gas inlet pressure should be at least 17 mbar.
3. Check the gas inlet pressure at measuring point 2 on the gas valve
unit.
4. Compare the measured values with the checking values in the table.
Tab.39 Minimum gas inlet pressure values at gas valve unit
measuring point 2
C 330 ECO Minimum value (mbar)
280 14
350 13
430 10
500 10
570 10
650 10
5. If the measured value is lower than the control value, clean or replace
the gas filter.
10.2.7 Checking the combustion
Combustion is checked by measuring the O
2
percentage in the flue gas
outlet duct.
Fig.64 Filling/drain valve
AD-0000534-01
1
2
Fig.65 Gas valve unit measuring points
AD-0000513-01
2
3
2
P
P1
10 Maintenance
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