Vaillant aurotherm classic VFK 135/2 VD Installation Manual page 31

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2
2. Slide the two mounting rails (top and bottom) onto the
brackets, as shown in the image.
3. Ensure that the open side of the bottom mounting rail is
facing upwards and that the open side of the top mount-
ing rail is facing downwards.
4. First slide the mounting rail onto one bracket (1).
5. Slide the mounting rail a little outwards (2).
6. Then slide the mounting rail back to the other bracket
(3).
7. Perform these steps one after the other for all racks.
Fitting mounting rails to several racks
A
8. When installing several collectors next to each other, al-
low the mounting rails to end in the centre of the brack-
ets (A).
9. Allow the mounting rails on the first and last rack to
protrude 50-200 mm over the edge (B).
Connecting mounting rails
1
10. Clamp the rail connector (1) into the mounting rails.
11. Ensure that the rail connector (1) engages in the holes
of the mounting rails.
0020159946_01 auroTHERM classic Installation manual
B
2
Flat roof fitting and installation 5
Note
After installation, the rail connectors are no
longer accessible.
Securing the mounting rail at the bottom
3
12. Screw the brackets tightly onto the lower mounting rail.
–
Working materials: 5 mm Allen key
Hooking the collector in at the bottom
1
Danger!
Risk of burns and scalding!
In the event of solar radiation inside the units,
collectors can reach 200 °C.
▶ Avoid working in direct sunlight.
▶
Cover the collectors before starting work.
▶ You should preferably perform the work in
the morning.
▶ Wear suitable safety gloves.
13. Lay the collector with the lower edge in the profile of
the mounting rail (1). Ensure that the mounting rail (1)
surrounds the lower edge of the collector.
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