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This fast operation is only for expert installers who are familiar with the setup and functioning
of drain back systems.
The following instruction gives a description of a fast and easy way to take the system into operation.
Assembly and installation
Assemble the system and install all pipelines - see “Installation scheme”
at page 7.
Specification of draining volume
Calculate or specify the draining volume - see “Initial operation of the SolBox” at page 11.
Filling and venting
Fill and vent the system completely through the filling station - see “Draining volume” at page 13.
Release of draining volume
Release the calculated or specified draining volume from the installation - see “Draining volume” at
page 13.
Testing the system pressure
Test the pressure of the installation. When filling the installation in a warm condition, a low pressure
may occur after cooling down of the solar circle. To compensate this, open the ball valve at the venting
unit (3) shortly and even up the occured low pressure.
Fast operation