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If installing three collectors, remove tiles for third collector strap. 4. Slide the Collector Extrusion on to the Collector Straps. After leveling, raise the hot pipe side of the extrusion by 1/2” per collector to ensure correct operation of the system (eg. For a 2 collector system, raise the hot pipe side of the extrusion by 1”). 6. Attach straps onto rafters or trusses with 5/16” x 6" lag screws. 7. Replace tiles that have previously been removed. 8. Flash and seal all roof penetrations. 9. C