Ultra Rail Installation Manual

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Pre-Installation Requirements

X-AXIS

Y-AXIS

System Layout

1) Transfer the array layout to the roof using a roof marking crayon to mark the inside and outside corners of the array.

2) Locate the estimated roof framing member positions and mark them in the array area with a roof marking crayon.

3) Transfer rail locations using a chalk line.

4) Mark roof attachment locations on the roof, noting that attachments will be located at intersections of rails and roof

framing members. Layout rails such that module frames do not overhang mounting rails more than speciﬁed by module

manufacturer, more than 30% of total module length, or more than required by the Class A Fire Certiﬁcation (see Certiﬁcation

Details section).

Ensure ﬁnal roof attachment locations do not exceed the maximum attachment spacing and cantilever speciﬁed in the design.

Layout Note: