Installation
6 720 643 409 (2010/03)
35
9.12 Filling the heating system
B Set the pre-pressure for the expansion vessel in the
premises according to the heating unit's statistical
height.
B Open the heating system's valves.
B Open the stopcock on the particle filter, fill the
heating system to between 1 and 2 bar and close it.
B Vent the heating system.
B Refill central heating system to between 1 and 2 bar
again.
B Check all connections for leaks.
9.13 Filling the collector system
The collector system is filled with collector circuit fluid
which must guarantee antifreeze protection until –
15 °C. We recommend bio-ethanol or a mixture of water
and propylene glycol.
A rough estimate of the amount of collector circuit fluid
that is required in relation to the length of the collector
system and the inner diameter of the pipe can be made
using table 19.
The following description of filling presupposes the use
of the filling station accessory. Follow corresponding
steps if other equipment is used.
Fig. 33 Påfyllnadssats E6 - E11, C6 - C11
Fig. 34 Filling unit E14 - E17
B Connect two hoses from the filling station to the
filling unit (Æ Figure 35).
Fig. 35 Filling with filling station
B Fill the filling station with collector circuit fluid. Fill
water before you fill antifreeze.
B Turn the valves on the filling unit so that they are in
filling position (Æ Figure 36).
Fig. 36 Filling units in filling position
Inner diameter
Volume per metre
Single pipes
Double U
pipes
28 mm 0,62 l 2,48 l
35 mm 0,96 l 3,84 l
Tab. 19
Single U pipes, consisting of one
descending and one ascending pipe, are
most often used as a rock collector.
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