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Header connection
8.2.2 Fitting the air vent valve on the roof
To connect the connection pipe to the air vent
(flow connection), the elbow must be removed from the
connection pipe and the double threaded fitting fitted.
B Cut elbow (Fig. 57, Item 1) from connection pipe us-
ing pipe cutter.
B Push union nut over the connection pipe.
Making the sealing face:
B Place clamping disc (Fig. 57, Item 2) behind the first
rib and press together. The clamping disc must lie
evenly on the collar of the nut.
B Put large diameter washer (Fig. 57, Item 3) into the
union nut in front of the cut surface of the connection
pipe.
B Firmly screw double threaded fitting (Fig. 57, Item 4)
into union nut, so that a flat sealing surface is created
on the connection pipe.
B Remove double threaded fitting and large diameter
washer and check that a flat sealing surface has
been created.
B Remove any burrs as required.
B Insert gasket (Fig. 57, Item 5) and screw in double
threaded fitting.
Connection to the collector:
B Firmly screw threaded fitting (Fig. 58, Item 5) and
connection pipe (Fig. 58, Item 2) into air pot (O-ring
gasket).
B Push air pot (Fig. 58, Item 1) and threaded fitting
onto collector connection and secure with bracket
(Fig. 58, Item 6).
B Feed connection pipe together with the sensor cable
through the ventilation tile (Fig. 58, Item 4) and
through the roof insulation.
B Connect header pipe to the compression fitting
(Fig. 58, Item 3).
i
USER NOTE
Install return connection as described in
Chapter 8.1 "De-airing through pressure
filling".
38
3.
4.
Fig. 57 Preparing the connection pipe
Item 1: Bracket
Item 2: Clamping disc
Item 3: Large diameter washer (for making sealing face)
Item 4: Double threaded fitting
Item 5: Gasket
6
5
4
Fig. 58 Fitting the air vent
Item 1: Air pot
Item 2: Connection pipe
Item 3: Compression fitting 22 mm
Item 4: Ventilation tile
Item 5: Threaded fitting R¾
Item 6: Bracket
1
2
3
4
5
63043966.24-1.SD
63043966.24-1.SD
1
2
3
63043966.23-1.SD
63043966.23-1.SD
6 720 613 055 (2006/04)
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