Vaillant aurotherm classic VFK 135/2 VD Installation Manual page 13

4.2.1.4 Installing the hanger bolt type
1
1. Define the clearances of the roof brackets. (→ Page 10)
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.
0020159946_01 auroTHERM classic Installation manual
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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.
Caution.
Damage to internal components.
The interior of the collector is ventilated
through a ventilation opening in the pipe
opening.
▶ Ensure that the ventilation opening is
clear so that the air can flow through it un-
impeded.
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
Note
System malfunction.
In the case of diagonal connection, to ensure that
the auroFLOW plus system functions correctly,
the lower mounting rail must be at an incline of
1% aligned to the lower connection (collector re-
turn).
2. Secure the mounting rail depending on the field connec-
tion.
3. Secure the mounting rail so that there is a 1% incline to
the lower connection (collector return).
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