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INSTALLATION GUIDE
PAGE
HIGH DENSITY 5-DEGREE
BALLAST RACKING SYSTEM
4
GENERAL APPLICATION NOTES
ECOFOOT5D GENERAL APPLICATION NOTES
Site-Specifi c System Design:
Unirac provides drafting services on all EcoFoot5D projects. This service produces a site-specifi c design pack-
age with an Engineered Stamped Layout including detailed ballast plan and bill of materials.
Roof Type:
EcoFoot5D is designed to mount photovoltaic modules to a range of roof surfaces, including: EPDM, TPO, PVC, Mineral Cap
Sheet (a.k.a. Rolled Asphalt), Tar and Gravel.
Roof Slope Range:
0-7 degrees maximum, 3-degree limit for unattached seismic.
Wind Zone:
EcoFoot5D is designed to mount photovoltaic modules on fl at roof surfaces with a maximum pitch of 7 degrees in areas with
extreme wind conditions. Please contact Unirac for clarifi cation or assistance.
Installation Requirements:
EcoFoot5D is a ballasted photovoltaic racking designed as a system. The system requires all EcoFoot5D
components, the specifi c module, and ballast placement prescribed in the PE stamped design. The absence of any of these elements in
any given sub-array could present a compromised condition on the roof. Arrays shall not be left unattended in such a state during an
installation.
This install guide offi cially documents the components used and proper methods for an EcoFoot5D installation. Bonding elements are
incorporated into EcoFoot5D components. As the system is built on the roof, components and modules are bonded together. Specifi c steps
to ensure a bonded system are described through the installation guide. It is the installer’s responsibility to ensure that the system is
safely and properly installed, and that the system is bonded back to a fi nal ground point.
When wiring the array, keep bare copper from contacting bare aluminum.
Thermal and Seismic Design Requirements:
EcoFoot5D is a fl exible and expandable design that accommodates various array geometries.
Maximum widths for arrays are as follows:
• 60-cell modules, 26 modules in a row
• 72-cell modules, 22 modules in a row
Minimum spacing between sub-arrays is 6”. Site specifi cs may further limit array sizes and spacing.