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SolarMount Unirac Code-Compliant Installation Manual :FUNIRAC <br />[3.3.2] Laying out the installing L-feet <br />L-feet are used for installation through <br />existing low profile roofing material, such <br />as asphalt shingles or sheet metal. They <br />are also used for mostground mount <br />installations. To ensure that the L-feet will <br />be easily accessible during flush installation: <br />Install kecond <br />, Use the PV module mounting holes <br />nearest theends of the modules. <br />Situate the rails se that footing bolt I <br />slots face outward. <br />" SolarMouMt Rails <br />The single slatted square side of the L-foot <br />must always lie against the roof with the <br />dotible-slotted side perpendicular to the <br />roof. <br />Foot spacing (along the same rail) and rail <br />6verhang depend on design wind loads. <br />Install half the L-feet: <br />Lower 1 <br />roof <br />edge ¥ <br />T K <br />11 <br />-- <br />+ Rafters <br />, If rails are pemendicular to rafters <br />(Fig. 23), instdil the feet closest to <br />the lower edge of the roof. <br />• If rails·are parallel to rafters <br />(Fig. 24), install the feet for one of <br />the raill, but not both. <br />Figure'23, Layout with raus perpendicular to rafters <br />For the [-feet being installed now, drill pilot <br />holes through the I oofing into the c:enter of <br />the rafter at each lag screw hole location.Rafters- B 9 - Install L-Feet <br />Squirt sealant into the hole and olito the <br />shafts of the lag screws. Seal the underside <br />of the L-feet with a sealant. Securely fasten <br />the L-feet to the building structure with the <br />lag screws. Ensure that the L-feet face as <br />shown in Figure 23 or Figure 24. <br />First <br />Hold the restofthe L-feet and fasteners <br />aside until the panels are ready for the <br />installation. <br />71 <br />- Blocks -Install L-Feet Second <br />FigUre 24. Layout with rails parallel to rafters <br />11 <br />4'i <br />4 <br />P.&/ <br />23