Vaillant auroTHERM VFK 145 H Installation Manual page 17

Completing collector rows
Conditions: Not all collectors of a row have been installed yet.
▶ Fit the connectors. (→ Page 16)
▶ Connect the mounting rails. (→ Page 16)
▶ Install an additional collector. (→ Page 16)
Positioning the top mounting rails
22. Slide all the top mounting rails until they are flush with
the lower collectors, one after the other (1).
23. Ensure that the edges of the mounting rails grip around
the collectors.
24. Slide the clamping elements down to the lower collect-
ors, one after the other (1).
25. Ensure that the clamping block of the clamping ele-
ments lies over the collector edges.
26. Tighten the clamping elements of the top mounting
rails.
–
Working materials: SW 13 spanner
Completing installation of the collectors
27. Tighten all remaining clamping elements.
–
Working materials: SW 13 spanner
28. Check for proper tensioning by shaking the clamping
blocks.
29. If a clamping block can be moved, tighten the nut
again.
4.2.2.2 Array configuration on top of each
other
Danger!
Personal injury and material damage due
to a falling collector.
Improper fastening may cause a collector to
fall.
▶ Tighten the clamping elements.
▶ Check for proper tensioning by shaking
the clamping blocks.
▶ If a clamping block moves, tighten the nut
again.
1. Install the collectors on the roof as specified in the fol-
lowing sections.
0020100571_03 auroTHERM, auroTHERM plus Installation manual
On-roof fitting and installation 4
Note
Mounting rails and clamping elements cannot
be moved at the same time.
Note
With array configuration on top of each other
and with a vertical collector position, the
collectors must be hydraulically balanced
(Tichelmann System).
1
Installing mounting rails
2. Use the clamping elements to secure the top and lower
mounting rail for the first collector to the roof brackets
((1) and (2)).
3. Position the lower rail as far as possible downwards on
the roof brackets.
4. Position the top rail on the roof brackets with the pre-
installation clearance dimension from the lower rail (→
chapter "Defining clearances of the roof brackets").
Taring mounting rails
5. Secure the mounting rails horizontally.
6. Compensate for any height differences by moving the
clamping elements.
7. To do this, pull the clamping element upwards (1),
move it (2) and release it so that it engages.
1
1
2
2
17