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:i· UNIRAC Unirac Code-Compliant InstaUation Manual SolarMount <br />[3.2.1] Planning your SolarMount installations <br />The installation can be laid out with rails parallel to the rafters <br />or perpendicular to the rafters. Note that SolarMount rails <br />make excellent straight edges for doing layouts. <br />Center the installation area over the structural members as <br />much as possible. <br />Leave enough room to safely move around the array during <br />installation. Some building codes require minimum clearances <br />around such installations, and the user should be directed to <br />also check 'The Code'. <br />The width of the installation area equals the length of one <br />module. <br />The length of the installation area is equal to: <br />• the total width of the modules, <br />• plus 1 inch for each space between modules (for mid- <br />clamp), <br />• plus 3 inches (11/2 inches for each pair of end clamps). <br />Peak <br />1 1 1 1 <br />f - - 3 <br />U -. Low-profile ! <br />J U <br />High-profile mode <br />mode <br />e .H D <br />® <br />Gutter <br />Figure 6. Rails may be placed parallel orperpendicular to rafters. <br />0 <br />page <br />16