Installation
6 720 643 409 (2010/03)
36
B Turn the valves on the filling station so that they are
in mixing position (Æ Figure 37).
Fig. 37 Filling station in mixing position
B Start the filling station (pump) and mix the collector
circuit fluid for at least two minutes.
B Turn the valves on the filling station to filling position
and fill the circuit with collector circuit fluid
(Æ Figure 38).
Fig. 38 Filling unit in filling position
B When the fluid level has fallen to 25% in the filling
station, the pump should be stopped and more
collector circuit fluid should be filled and mixed.
B When the circuit is full and air no longer comes from
the return pipe, the pump should be run again for at
least 60 minutes (the fluid should be clear and should
not contain any bubbles).
B The circuit must be pressurized when venting is
complete. Turn the valves on the filling unit to
pressure increase position and pressurize the circuit
to 2.5 to 3 bar (Æ Figure 39).
Fig. 39 Filling units in pressure increase position
B Turn the valves of the filling unit to normal position (Æ
Figure 40) and turn off the pump on the filling station.
Fig. 40 Filling units in normal position
B Disconnect the hoses and insulate the filling unit.
If other equipment is used, the following is required,
among other things:
• A clean container with capacity for the amount of
collector circuit fluid that is required
• An additional container for collection of contaminated
collector circuit fluid
• Submerged pump with filter, flow capacity of min.
6m
3
/h, pressure height of 60 to 80 m
• Two hoses, Ø 25 mm
Repeat the following steps for each circuit.
One circuit at a time is filled with collector
circuit fluid. Keep the valves closed in the
other loops during the process.
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