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Vitosol 100-FM/200-FM Installation, Operating and Service
Maintenance, Inspection and Cleaning
The solar thermal system must be inspected regularly by
the building owner to verify that the control is operational,
and that the solar pump is running when the sun is shining
and that the system fluid pressure is within range.
CAUTION
The building owner must notify a qualified heating
contractor immediately if they notice any problems with
the solar control or solar pump, or a system pressure
drop. Failure to do so can result in system stagnation
leading to excessively high temperatures and damage
to the solar fluid and or system components.
The solar thermal system should be inspected once a year
by a qualified heating contractor to ensure operational
reliability.
In addition to this, a visual inspection of all essential
components ( e.g. collectors and pipe work) is recommended
every 3 to 5 years.
Regular inspection and service by a qualified heating
contractor is critical to the performance of the Viessmann
Vitosol 100-FM and 200-FM. Neglected maintenance,
e.g. forgoing regular cleaning services, impacts on warranty
and will result in decreased efficiency of the system. Regular
cleaning and maintenance ensures clean, environmentally
friendly and efficient operation. We recommend a
maintenance contract with a qualified heating contractor.
Regular maintenance required:
Keep collectors clean
Check integrity of collector roof mounting hardware
Check the thermal insulation of the pipes for
positioning and damage and adjust if required
Regularly check the pressure gauge
Compare the system operating pressure with the set
value. If values are different, check the expansion
tank (see page 39)
Bleed air from air separator on Solar-Divicon.
Have any leaks repaired immediately by a heating
contractor
After approximately six months the following
functions should be tested:
- operating pressure
- smooth running of the pump(s)
- supply temperatures
- control functions
Check freezing point and pH of the heat transfer
medium annually
After five years, the storage tank heat exchanger
should be inspected
For Vitocell 100 series tanks, check and replace
magnesium anode every two years
Check the solar safety relief valve only if there are
visible signs of it being open (e.g. deposits, drips)
Maintenance
43
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