Vaillant auroTHERM VFK 145 H/V Installation Manual page 14

Fig. 5.5 Frames with gravel trays
Fig. 5.6 Direct screwed connection
Fig. 5.7 Fixing and blocking the mounting rail
Installation manual auroTHERM 0020057143_02
Flat roof installation 5
If gravel trays are used:
• Place large protection mats under the sys-
tem.
• Assembly frames based on the number of
collectors to be installed.
Caution!
a
Before mounting the collectors, fill
the gravel trays on the first frame
with gravel or other suitable weight-
ing material, to give the system sta-
bility.
h Note
For load weights and distances,
please see Tab. 5.1 and 5.2.
With screwed connection on the roof:
• Assembly frames based on the number of
collectors to be installed.
h Note
For load weights and distances,
please see Tab. 5.1 and 5.2.
• Fix the frames on the roof.
Caution!
a
The roof skin can break and cause
lack of tightness!
When installing the roof sealing sur-
faces, make sure the roof skin is ade-
quately protected.
• Fix the horizontal mounting rails to the
frame clamping elements.
• Compensate any difference in height by
moving the clamping elements.
• Pull the lower part of the clamping element
upward, now it can be moved and it engag-
es again when released.
GB
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