43
Installing the mounting rack
Non-standard roof
Install the mounting rack as per the
instructions and dimensions on pages
21 – 24.
Slate roof brackets
•
Securely fasten slate roof brackets to
the roof substructure using appropri-
ate bolts (to be supplied at site).
•
Replace the roof covering.
Hanger bolt
•
Drill a 14 mm hole in the roof cover-
ing. Ensure that it is drilled in the
raised part of the roof covering, not in
a valley that collects water.
•
Fastening holes in the rafters (8.5
mm).
•
Screw the hanger bolt into the rafter
to a depth of at least 80 – 100 mm.
•
Push the rubber seal right to the bot-
tom and lightly press it to the roof
covering using the flange nut.
Metal roof clamps
•
Because of the low clamping force,
one clamp shall be installed horizon-
tally on each metal seam.
•
Lightly fasten the clamps to the seam.
Align the rack when the horizontal
supports are fastened.
•
Ensure that the clamp is pushed as
far as possible onto the seam.
•
torque for metal seam clamp bolts:
about 25Nm (tighten firmly using a
short ratchet)
Fasten the rail to the roof anchors
•
Bolt the rail to the roof anchors with
the open side facing up.
.
•
Align it using the slotted hole.
