Ballast Frame
Installation Manual 224
THE STANDARD IN PV MOUNTING STRUCTURES
UniRac welcomes input concerning the accuracy and user-friendliness of this publication. Please write to
December 2006
© 2006 by UniRac, Inc. All rights reserved.
Thank you for purchasing a UniRac product. Please review this
manual completely before proceeding.
Ballast Frame installations are all custom confi gured. Use this
manual in conjuction with your
Ballast Frame Specifi cation
Sheet.
That document will list specifi c components of your
system.
The illustrations in this manual may vary from your custom
installation in the following ways:
•
Ballast bays.
Standard ballast frames have three to eight
bays for placing ballast.
•
Tilt angle.
Drawings illustrate tilt legs. Some installations
may use L-feet only to achieve a minimal tilt.
•
Rail type.
Drawings illustrate standard rails. Light or HD
(heavy duty) rails may be specifi ed in your installation.
The installer is solely responsible for:
• Complying with all applicable local or national building
codes, including any that may supercede this manual;
• Ensuring that UniRac and other products are appropriate
for the particular installation and the installation
environment;
• Ensuring that the roof, its rafters, connections, and
other structural support members can support the array
under building live load conditions (this total assembly is
hereafter referred to as the roof rafter assembly);
• Using only UniRac parts and installer-supplied parts
as specifi ed by UniRac (substitution of parts, including
ballast, may void the warranty);
• Ensuring that lag bolts, if applicable, have adequate
pullout strength and shear capacities as installed;
• Maintaining the waterproof integrity of the roof,
including selection of appropriate fl ashing; and
• Ensuring safe installation of all electrical aspects of the PV
array.
