Vaillant auroTHERM VFK 145 H Installation Manual page 18

4 On-roof fitting and installation
Laying and hooking collectors
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.
8. Lay the lower edge of the first collector in the lower
mounting rail and hook it in at the clamping elements
(1).
9. Ensure that the top clamping block of the clamping ele-
ment is positioned above the edge of the collector.
10. Tighten the clamping elements of the lower mounting
rail.
–
Working materials: SW 13 spanner
Positioning the top mounting rail
11. Slide the top mounting rail until it is flush with the col-
lector.
12. Ensure that the edge of the mounting rail grips around
the collector.
Conditions: The last installed collector is not the top collector of a column.
▶
Slide the appropriate clamping elements onto the mount-
ing rail (I).
▶ Ensure that the clamping block of the clamping elements
lies over the collector edge.
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Conditions: The last installed collector is the top collector of a column.
▶ Slide the appropriate clamping elements onto the mount-
ing rail (II).
▶
Ensure that the clamping block of the clamping elements
lies over the collector edge.
Installing the next collector
Conditions: Not all collectors of a column have been installed yet.
▶
Repeat all installation steps with the next higher col-
lector.
▶
Ensure that both mounting rails are installed between
the collectors as shown in the illustration ((1) and (2)).
▶ Ensure that the clamping blocks between the collectors
grip around both mounting rails.
Fitting connectors
A
B
13. Connect the collectors with the pipe connectors (1).
Caution.
Risk of damage to the collector.
Improper installation of the pipe connectors
may damage the collector.
▶ Ensure that the clamps (A) slide into the
grooves of the pipe connector (B).
14. Secure the pipe connectors with the clamps.
Completing installation of the collectors
15. Tighten all remaining clamping elements.
–
Working materials: SW 13 spanner
16. Check for proper tensioning by shaking the clamping
blocks.
17. If a clamping block can be moved, tighten the nut
again.
Installation manual auroTHERM, auroTHERM plus 0020100571_03
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