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SolarMount Unirac Code-Compliant Installation Manual :=UNIRAIL <br />[3.2.2] Laying out L-feet <br />L-feet (Fig. 7) ean be used for attachment through existing <br />roofing maierial, such as asphall shingles, sheathing or slieet <br />metal to the building st:ructure. <br />Use Figure 8 or 9 below to locate ahd m.irk the position of the <br />L-feet lag screw holes within the installation area. <br />If multiple rows are to be installed adjacent to one another, it <br />is hot likely that each row will be ceniered above the rafters. <br />Adjustasneed ed, following theguidelinesin Figure 9 as <br />closely as possible. <br />422· <br />f47*F. <br />Figure 7 <br />7 <br />r- Overhang 25% L max <br />1-- Foot spacing/I <br />11 Rail Socin "1" 9 <br />25% of module <br />width <br />-1 <br />W <br />P. <br />Jl <br />'i 50% of module <br />1 width: (TYP)ly/134" I+ rE El -f-- _ <br />lower roof edge Raften <br />(Building Structure) <br />Note: Modules must be <br />centered symmet,-ically on the <br />rails (·1·/- 2"). If this Li not the <br />case, call Uni,·acfor assistance. <br />Figure 8. Layout with rails perpendicular to rafters. <br />Installing L-feet <br />Drill pilot holes through thereof into the <br />center of the rafter at each L-foot lag screw <br />hole location. <br />Squirt sealant:into the hole,·and on the shafts <br />of the lag screws. Seal the underside of the L. <br />feet with a suitable sealan[. Consult with the <br />company providing the roofing warranty. <br />Securely fasten the L-feet to the roof with <br />the lag screws. Ensure that the L-feet faye as <br />shown in Figure 8 and 9. For greater ventila, <br />Licni, Llie prefelied Jitelliod is to place [he <br />single-slotted square side of the L-foot against <br />the roof with the double-slotted side perpen- <br />ditularrothe roof. If the installer clayges to <br />mount the L-foot with the long leg against the <br />roof, the bolt slot closest to the bend must be <br />used. <br />25% of module Width - <br />1 M-137 <br />Lower foof edge <br />Rafters (Building Sliucture:) <br />50% of mo.dule width <br />1%-1%. -_-I'l <br />1 \ <br />1 <br />'25dot Jaeirk/ »jit jdail Span. L \..%--// <br />1 <br />Overhang 25% t max <br />t <br />Note: Modules must be <br />centered symmet ricallyonthel <br />rails (+/- 2"). (fihisis not the <br />case, call Unirac.for· assistance. <br />11 <br />K+4'A <br />'431 <br />N <br />Figure 9. Layout with rails parallel to rafters: <br />C, <br />R <br />d. <br />p.7 <br />17