Installation manual – Version 1.1 (updated January 2013) 6
INSTALLATION
The GroundLock frame consists of a lower steel frame
and an upper aluminium frame. The steel frame is held
in concrete footings.
The aluminium frame includes the SunLock rails. The PV
modules are attached to the SunLock rails using standard
SunLock mid-clamps and end-clamps.
Steel frame
The steel frame is constructed from cold formed galvanized
c-sections (Lysaght 152 x 64 x 19.5 x 2.4 mm lipped CFS).
1. Mark out the location of the footings:
• The posts are spaced at 1950 mm centres (East-West)
• The back row is placed at 2070 mm back from the front
row (North–South)
2. Dig or bore the holes to the required depth as defined:
• P1–300 mm diameter & 900 mm deep
• P2–300 mm diameter & 1200 mm deep
Note that each post is supplied with an extra 300 mm –
either the posts should be shortened to suit the terrain, or
the footings should be made deeper.
3. Measure and cut each post to length, accounting for
sloping terrain; the horizontal beams are 600 mm
(minimum) above ground level
4. Drill and insert the anchor bolt into the base of each
post. This bolt ensures that the post is anchored
adequately in the concrete footing.
5. Concrete the posts in place with concrete of minimum
strength 25 MPa, ensuring that the base of the post is a
minimum of 100 mm from the bottom of the hole.
6. Drill and bolt the horizontal beams to the posts:
• Splice the sections to form two 6 m length beams,
using the supplied splicing (joining) kit. Use the pre-
punched holes in the splicing kit as a template to drill
the required holes in the beams.
• Bolt the horizontal beams to the posts using three M8
stainless bolts and nyloc nuts at every joint
NOTE: When several GroundLock
frames are to be joined in a
continuous series, the distance
between each frames outer piers
should be a minimum of 810mm
to account for panel overhang.
