ecoTEC pro - Vaillant
ecoTEC pro - Vaillant
ecoTEC pro - Vaillant
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12 Inspection and maintenance<br />
ing installation, ideally with nitrogen, otherwise with air.<br />
Ensure drain valve on boiler is open during topping up.<br />
> If water escapes from the measuring stub pipes (1) of the<br />
expansion vessel, you must replace the expansion vessel.<br />
12.4 Checking the gas flow pressure<br />
> Check the gas flow pressure (¬ section 10.9.4).<br />
12.4.1 Checking CO2 content<br />
> Check the CO2 content (¬ section 12.1.3).<br />
54 Installation and maintenance instructions <strong>ecoTEC</strong> <strong>pro</strong> 0020129672_03
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