Commissioning [Specialist] - Viessmann DN25B Installation, Start-Up And Service Instructions Manual

Solar-Divicon DN25B Installation, Start-up, Service
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Commissioning [specialist]

Before commissioning the solar station, you must read and observe the following safety instructions:
Risk of burns and scalding!
The valves and fittings may heat up to
more than 212 °F (100 °C). During
flushing, filling and venting, the solar
fluid can escape as vapor and result in
scalding.
 Flush and fill the system only if the
collector temperatures are below
150 °F (70 °C).
Risk of frost!
It often happens that solar thermal systems cannot be
completely drained after flushing. Thus, there is a risk of
frost damage when flushing with water.
 Therefore, the solar thermal system should only be
flushed and filled with the solar fluid used later on.
 Use a water and propylene glycol mixture with max.
50% of propylene glycol as solar fluid, in order to
avoid damaging the seals.
10
Propylene glycol: hazardous in case of ingestion!
Propylene glycol is hazardous in case of ingestion.
It is irritant in case of eye or skin contact.
 Wear chemical resistant protective gloves and safety
glasses with side-shields when handling propylene
glycol mixtures.
Observe the instructions of the antifreeze

manufacturer.
Note regarding the commissioning sequence
 When commissioning the system, first fill the storage
circuit and then the solar circuit. This guarantees
that any absorbed heat can also be dissipated.