UniRac, Inc.
www.unirac.com
3201 University Boulevard SE, Suite 110
Albuquerque NM 87106-5635 USA
505.242.6411
505.242.6412 Fax
Page
6
Installation Manual 201.1
SolarMount
®
Top Mounting
Installing the modules
Prewiring Modules.
If modules are the Plug and Play type, no prewiring is
required, and you can proceed directly to “Installing the First Module” below.
If modules have standard J-boxes, each module should be prewired with one
end of the intermodule cable for ease of installation. For safety reasons, module
prewiring should not be per formed on the roof.
Leave covers off J-boxes. They will be installed when the modules are installed
on the rails.
Installing the First Module.
In high-profi le installations, the safety bolt and
fl ange nut must be fastened to the module bolt slot at the aligned (lower) end of
each rail. It will prevent the lower end clamps and clamping bolts from sliding
out of the rail slot during installation.
If there is a return cable to the inverter, connect it to the fi rst module. Close the
J-box cover. Secure the fi rst module with T-bolts and end clamps at the aligned
end of each rail. Allow half an inch between the rail ends and the end clamps
(Fig. 15). Finger tighten fl ange nuts, center and align the module as needed, and
securely tighten the fl ange nuts (15 ft lbs).
Installing the Other Modules.
Lay the second module face down (glass to
glass) on the fi rst module. Connect intermodule cable to the second module and
close the J-box cover. Turn the second module face up (Fig. 16). With T-bolts,
mid clamps, and fl ange nuts, secure the adjacent sides of the fi rst and second
modules. Align the second module and securely tighten the fl ange nuts (Fig. 17).
For a neat installation, fasten cable clamps to rails with self-tapping screws.
Repeat the procedure until all modules are installed. Attach the outside edge of
the last module to the rail with end clamps.
Trim off any excess rail, being careful not to cut into the roof. Allow half an inch
between the end clamp and the end of the rail (Fig. 15).
Check that all fl ange nuts on T-bolts are securely fastened.
Figure 18. Size G clamps (for modules with high lips)
include a spacer for the end clamps but are otherwise
identical. Size H mid clamps and end clamps (for mod-
Figure 15
Figure 16
Figure 17
High-lipped module
(cross section)
SolarMount rail with Size H clamps
Low-lipped module
(cross section)
SolarMount rail with G clamps and spacer
Spacer
ules with low lips) are identical and employ hexhead
bolts in place of T-bolts; their heads slide into Solar-
Mount
®
rails.
1
/
2
" minimum
1
/
4
" module bolt
and
fl
ange nut
Rail
End clamp
Module
frame
J-boxes
Module frames
1
/
4
" module bolt
and
fl
ange nut
Mid clamp
