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Header connection
8.2
De-airing through air vent (accessory) at highest point in the system
If you intend to vent the solar heating system with an au-
tomatic air-vent valve (accessory) at the highest point of
the system, run the flow line rising to the air-vent valve
(Fig. 54, Item 2) and the return line rising to the collector
array (Fig. 54).
Avoid frequent changes in direction.
i
User note:
For each change of direction downwards
and each new rise, install an additional air
vent.
Function of the weather protection cap and weather
protection cap on the automatic air vent valve
The solar heating system is vented through the opened
weather protection cap. When in operation, the weather
protection cap (Fig. 55, Item 1) must always be posi-
tioned over the weather protection cap to prevent mois-
ture entering through the opened weather protection cap
into the solar heating system).
Open the air-vent valve by unscrewing the weather pro-
tection cap one full revolution.
Universal air vent set scope of supply (Fig. 55):
Item 1:
Weather protection cap
Item 2:
Automatic air vent
Item 3:
Ball valve
Item 4:
Gasket
Item 5:
Vent pot
Item 6:
Double threaded fitting
Item 7:
Hose nozzle with O-ring
Item 8:
Hose clip
Item 9:
Solar hose 55 mm
36
Fig. 54 View – air pot with vent valve for flow connection
Item 1: Collector sensor
Item 2: Automatic air vent valve on roof
9
8
×
1
×
1
×
1
Fig. 55 Universal air vent set
×
1
×
1
×
1
×
2
×
2
×
1
1
7
7
6 720 613 577 (2006/04)
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63043965.58-1.SD
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63043965.59-1.SD
63043965.59-1.SD
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