Wolf CGB-35 Maintenance Instructions Manual page 12

• Check the balanced flue system.
Checking the siphon
If required, clean and re-fill.
Check for tight fit,
prevent flue gas from escaping.
• If you notice a loss of water, check the ex-
pansion vessel inlet pressure and increase
it, if required, to 0.75 bar. The heating circuit
must be at zero pressure.
Then fill the system.
12
Maintenance steps
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