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Commissioning, inspection, maintenance
Further details regarding the individual steps
Checking pressure conditions and pre-charge pressure
Cover the collectors.
Note
The glass cover of Viessmann flat-plate
collectors is coated with a protective
foil.
For vacuum tube collectors, use the tar-
paulins available as accessories.
Before the solar thermal system is
flushed or filled, check the pre-charge
pressure of the expansion vessel. This is
no longer possible once the solar ther-
mal system is operational.
1
P
3
5
6
Note
A manual pressure gauge can be found
in the solar service case available as an
accessory.
Enter values into the following table.
These can be retained for later inspec-
tion and maintenance work on the solar
thermal system.
2
4
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