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Solar-Divicon DN20B Installation, Start-up, Service
Airstop
The airstop with manual bleeder is used to bleed the solar thermal
system. To ensure a perfect ventilation of the solar circuit, the flow
velocity must be at least 0.3 m/s in the supply.
Pipe
diameter
½ "
¾"
The air liberated from the solar fluid is collected in the upper area
of the airstop and can be discharged via the vent plug [4.2].
Danger of scalding due to escaping vapor!
The escaping solar fluid can have a temperature of more than 212 °F (100 °C) and cause scaldings.
Carefully open the vent plug and close it again, as soon as medium escapes.
Venting the solar thermal system after commissioning
Immediately after installation, vent the solar thermal system daily
and then weekly or monthly, depending on the vented air quantity.
This ensures optimum operation of the solar thermal system.
Check the system pressure after venting and increase it to the
prescribed operating pressure, if necessary.
12
Flow rate
Flow rate
at 0.3 m/s
at 0.3 m/s
[USgpm]
[l/min]
0.63
1.49
2.4
5.6
4.2
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