4 Commissioning [specialist]
2016/05
997655910x-mub-en
–
V07
13
Airstop
The Airstop with manual vent valve is used to vent the solar system.
To ensure a perfect venting of the solar circuit, the flow velocity in the
flow line must be at least 0.3 m/s.
Pipe diameter [mm]
Flow rate at 0.3 m/s
∅ outside
∅ inside
l/h
l/min
15
13
~ 143
~ 2.4
18
16
~ 217
~ 3.6
22
20
~ 339
~ 5.7
The air liberated from the solar fluid is collected in the upper part
of the Airstop and can be released via the vent plug [4.2].
WARNING
Danger of scalding due to vapour escape!
The escaping fluid can reach temperatures of more than 100 °C and cause
scalding.
Carefully open the vent plug and close it again as soon as fluid escapes.
Venting the solar installation after commissioning
At the beginning, vent the solar system daily and then weekly or monthly, depending
on the vented air quantity. An optimum operation of the solar installation is thus
ensured. Check the system pressure after venting and increase it to the specified
operating pressure if necessary.
4.2