Scope Of Inspection - Viessmann VITOSOL 100-F Service Instructions Manual

Scope of inspection

Scope of inspection
The solar thermal system should be inspected once a
year to ensure operational reliability.
In addition to this, a visual inspection of all essential
components (e.g. collectors and pipework) is recom-
mended every 3 to 5 years.
Vent the solar thermal system.
■
Compare system operating pressure with the set
■
value. If the values are different, check the expan-
sion vessel.
■ Check the heat transfer medium.
■ Start circulation pumps manually if necessary (listen
for noises).
Compare flow rate with set value.
■
Check thermostatic mixing valve (if installed).
■
■ Check plausibility of the solar parameters subject to
the current insolation level (e.g. flow and return tem-
peratures at the thermometers; collector and cylinder
temperatures at the solar control unit).
Only check the safety valve if there are visible signs of
it being open (e.g. deposits, drips).
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