4 Commissioning [specialist]
2015/03
EN-XXX_CIRCOtransfer-30E-50E_TI-MA-BA-150401-3PAW0501 - 99609x7WAG0x-mub-en - V06
15
Airstop
The Airstop (air-scoop with plug for manual venting) serves to
bleed the solar installation. To ensure perfect deaeration of the
solar circuit, the flow velocity must be at least 0.3 m/s in the
flow line.
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
28
25
~ 530
~ 8.8
The air separated from the solar fluid is collected in the upper part of the Airstop and can be
released at the vent plug [j].
WARNING
Danger of scalding due to vapour escape!
The escaping fluid can have a temperature of more than 100 °C and cause
scalding.
Carefully open the vent plug and close it again, as soon as medium
escapes.
Venting the solar installation after commissioning
At the beginning, vent the solar installation daily and then weekly or monthly,
depending on the vented air quantity. Thus, an optimum operation of the solar
installation is ensured. Check the system pressure after venting and increase it to
the specified operating pressure, if necessary.
j
