10181241_2210 N. SPINNAKER - Plan (2)

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,Installation-Mainual: MEMC S.Uvantis..60 cell PV Modules _ _ _5 of 15 4.0 MECHANICAL INSTALLATION 4.1 PLANNING AND DESIGN Before installation, check to ensureall sub-structure will accommodate expectedsystem loads. This includes and is not limited to roof, foondations, mechanical structure, and mechanical connections. For roof installations, utilize·a fire-resistant roof covering rated for the application. Mechanical structures should notcontact the module backsheet under any expected load conditions Considerthe followihg factorsduring system design, which will in fluence performance a) MEMC solar modules produce the most power when they are pointed directly at the sun, and should be tilted for optimum system perfotmance. b) Proximity to obstructions such':as: walls, buildings, trees, groundcover,isnow cover, or dust and debris that have the potential to shadeordamage the modules. c) Elevated temperatures will decreaseenergy yield, so designs should ensureadequate airflow across the back of the module. d) Allow a minimum spacing of 10 mm between modules for thermal expansion. 4.2 MODULE INSTALLATION OPTIONS FOR MOUNTING LOCATIONS For mounting locations forclamps or bolt forspecified load, please referto Table on page 6. Each module should be mounted using four bolts through:the mounting holes on the rear side of the module, orwith four clamps over the front side. Depending on thedesired load capability of the array, modules may be mounted either perpendicularor parallel to the structure rails. Clamps can be mounted anywhere insideof the safe mounting range foreach case illustrated below (referring to chart showing clamp and bolt mounting locations). I f using boltq, eight mounting holes arp provided on the rparqirle the·morltile fra me ac Ghown i n_Appendix 8.1. l Jse a stai nleqa steel bolt sta¢k no smallerthan 14"-20 or M6, with two flat washers amd ailocking washeras shown in Appendix 8.2. To ensure an adequate clamping area, all clamps used should comply with the following general conditions: 1. Clamp height mustcorrespond to 50 mm frame height 2. Clamp must have a minimum width of 38 mm 3. Clamp depth must be between 6 mm to 10 mm All fasteners used to fixthe modules with clamps should b'e stainless steel, and no smaller than W'-20 or,M6. To provideadequate fixing orclamping forte, torque the ininimum recommended fastenersto 13.6-16.3 N.m [10- 12 ft lb]. All other structural dimensions, such as clamp and rail thickness, should besized appropriately for the intended site load. © Copyright 2012 MEMC Electronic Material -