Vaillant auroTHERM VFK 145 H Installation Manual page 15

4.2.1.4 Installing the hanger bolt type
1
1. Define the clearances of the roof brackets. (→ Page 12)
2. At the corresponding position, drill a hole in the pantile
(1).
3. Tighten the hanger bolt onto the rafters through the
pantile(2).
4. Position the central nut so that, after inserting the upper
part of the roof bracket, the front contact area lies on
the roofing (3). Ensure the correct positioning of the top,
middle and lower roof brackets.
4
5
5. Position the roof bracket on the central nut (4).
6. Screw the second nut on and tighten (5).
–
Working materials: SW 17 spanner
7. Disconnect the threaded rod directly above the nut (6).
8. Deburr the interface.
0020100571_03 auroTHERM, auroTHERM plus Installation manual
3
6
On-roof fitting and installation 4
4.2.2 Installing collectors
n
4.2.2.1 Adjacent array configuration
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.
Note
Mounting rails and clamping elements cannot
be moved at the same time.
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 roof bracket clearances").
Taring mounting rails
1
5. Secure the mounting rails horizontally.
1
2
2
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