│
10
2.3
Mounting rails on roof anchors
• have ready two rails in the length required for the number and type of collectors to be installed. Align the
travelling screw head (10) with the horizontal rail and shift the rail onto it, or shift the screws into the rail and
fi
x
to the anchors. Use serrated lock washers to
fi
x the nuts.
Pic. 10: Fixing the rail onto the roof anchors
2.2.4 Installation with bolts for
fi
xing rails onto a roof
This method of installation
is preferably used for roofs
of bitumen corrugated
sheets like Gutta or Ondu-
line etc., or for corrugated
eternit or metal sheets. The
bolt shall be screwed into
a rafter or another massive
wooden roof element using
spanner No. 8. Pre-drilling 6 mm diam. holes is recommended. Holes should be always drilled in the crest of
the roo
fi
ng wave, not in its valley to avoid leakage. After screwing the bolt in, put on the rubber seal and using
a washer and nut, seal the drilled hole. Then mount the U-shaped bracket on the bolt, between two nuts with
a serrated washer. Then M8 bolt with
fl
oating head (for rails) shall be mounted into the other end of the bracket.
First insert the
fl
oating head into the groove of the rail, and then tighten the bolt together with the rail to the
U-shaped bracket using a nut and a serrated washer.
100
ø 9
80
140
40
40
roof anchor
top / bottom rail
M8 bolt with
travelling head
