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SnapNrack S100 Installation Manual

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SnapNrack
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SERIES 100 Roof MounT InSTall aTIon Manual
TM
S E R I E S 10 0 R O O F M O U N T
CODE COMPLIANT
INSTALLATION
MANUAL |
2012
| i

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Summary of Contents for SnapNrack S100

  • Page 1 SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual S E R I E S 10 0 R O O F M O U N T CODE COMPLIANT INSTALLATION MANUAL | 2012...

  • Page 2: Table Of Contents

    Table of Contents INTRODUCTION ..............................3 OVERVIEW OF THE SNAPNRACK SYSTEM ..................3 OVERVIEW OF THIS MANUAL ........................4 YOUR RESPONSIBILITY AS INSTALLER ....................4 SUPPORT ...............................5 PREPARE FOR THE INSTALLATION .......................6 IDENTIFY TYPE OF ROOF.........................6 IDENTIFY SNAPNRACK COMPONENTS ....................6 OBTAIN INSTALLER SUPPLIED TOOLS AND MATERIALS ...............9 SURVEY THE SITE ............................9...
  • Page 3 12.1 EDGE SCREEN OVERVIEW ........................37 12.2 MEASURE ARRAY PERIMETER ......................37 12.3 INSTALL ARRAY EDGE SCREEN CLIPS ....................37 12.4 TRIM AND INSTALL EDGE SCREEN .....................37 APPENDIX ................................38 13.1 ENGINEERING CERTIFICATION LETTER .................... 38 13.2 RAIL SPAN TABLES ...........................47 13.3 SNAPNRACK WARRANTY ........................78...

  • Page 4: Introduction

    International Building Code. The SnapNrack installation system is a set of engineered components that can be assembled into a wide variety of PV mounting structures. It is designed to be installed by qualified solar installation technicians.

  • Page 5: Overview Of This Manual

    This manual describes the installation procedures for standard roof mounting for common photovoltaic (PV) arrays. It guides you through the correct procedures for mounting the SnapNrack PV module racking system on the major types of roof structures and materials. It also provides layout guidelines, installation tips and directions.

  • Page 6: Support

    1.4 Support For help with your installation, call technical support. Visit www.snapNrack.com and click Contact in the top menu bar. Figure 1.1 - SnapNrack.com...

  • Page 7: Prepare For The Installation

    (which we will refer to as shake). PV array installations on composition roof surfaces using the SnapNrack flashed L-foot components as described in section 3, SnapNrack Standard Rail offers the quickest and easiest SnapNrack installation solution.
  • Page 8 SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Rubber end cap top-mount end clamp Mid clamp Standoff assembly — base and standoff shaft L-foot assembly —base, L-foot, stamped steel flashing L-Foot Base Standoff base Standoff clamp L-Foot Figure 2.1 - common System components - cont.
  • Page 9 SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Standard Base Seam clamp corrugate Roof Block Heavy Duty (HD) Standoff and Base Wide Base Seam clamp Four-Hole Standoff Base and Standard Standoff Hanger Bolt clamp Fig 2.2 - alternate SnapNrack Hardware...

  • Page 10: Obtain Installer Supplied Tools And Materials

    • Tape measure sound and can support the additional • Flat pry bar load of the array. • Structural plans for the building when • Identify any construction anomalies available that may complicate the process of • SnapNrack Rail Cutting Guide (Optional) locating rafters from the roof surface.

  • Page 11: Lay Out System On The Roof

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual • Measure the spacing between the 2.5 Lay out system on the roof rafters. Using the information collected in the site • If you find structural problems such survey, complete a system layout showing as termite damage or cracked rafters array location and distances from key roof that may compromise the structure’s...
  • Page 12 SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Typically, PV modules are installed in portrait require 1½ inches of extra rail to extend past mode, with the long side of the module the end of the module frame. If using the running up the roof slope and the rails UEC this does not apply.
  • Page 13 SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual the Appendix at the back of this manual Transfer rail and estimated attachment (section 13). locations to the roof, noting that attachments will be located at intersections of rails and Verify that rail ends do not overhang by a rafters.

  • Page 14: Flush Mount On Composition Roofs (Using L-Feet)

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 3. Flush mount on composition roofs (using L-feet) 3.1 Introduction Typically, using flashed L-feet to mount PV modules enables a faster and simpler installation than using standoffs, but the L-foot type of mount can only be used on composition roofs.

  • Page 15: Locate Attachment Points

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 3.2 Locate attachment points The location of the attachment points for L-foot mounts depends on the orientation of the modules relative to the rafters as shown in this diagram. Using the array layout plans and the estimated rafter locations, as described in the previous section 2.5.

  • Page 16: Secure Base

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Be sure to drill the hole deep enough to penetrate the roof decking and enter the rafter by 1 to 1½ inches. If the drill pushes through at this point, you have likely missed the rafter and should move ½ inch laterally toward where you estimate the rafter to be and try again.

  • Page 17: Attach L-Foot

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Note: the L-foot base is different from the standoff base described in section 4 of this manual. Make sure you are using the correct part for the type of roof on which you are installing the array.

  • Page 18: Flush Mount On Other Roof Types (Using Standoffs)

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 4. Flush mount on other roof types (using standoffs) 4.1 Introduction Typically, standoffs are used for installations on tile, shake, or special thick composition roof types. For installations on standard composition roofs, use flashed L-feet as described in section 3.

  • Page 19: Determine Type And Size Of Attachment And Flashing

    (Same as above except lifted off roof) 4.3 Standoff Base Options SnapNrack Series 100 Mounting system has two alternative standoff bases that can be used when roof structures can not accomodate the standard one-hole standoff base. The standard Standoff shafts can be used with the Four-Hole Standoff Base when the roof structure uses laminate I-beams Fig 4.3 - HD Standoff installed...
  • Page 20 SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Fig 4.4 - Four-Hole Standoff Detail Fig 4.5 - HD Standoff Detail | 19...

  • Page 21: Standoff Base Options

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 4.4 Locate attachment points The location of attachment points for standoff mounts depends on the orientation of the modules relative to the rafters as shown in Fig 2.5Using the array layout plans...

  • Page 22: Secure The Base

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 4.7 Secure the base Prior to securing the base to the roof insert the 5/16-inch x 1-inch bolt and lock washer through the tapped hole in the standoff base and tighten. this piece can be preassembled and Secure standoff base to rafter taken out to the job site as one part.

  • Page 23: Attach Standoff And Install Flashing

    7. 5.0 Installing on other types of roof penetrations Slide standoff clamp and hardware The SnapNrack Series 100 PV Mounting Fig 4.7 - installing Standoff & Flashing System includes several specialized roof 5.1 Installation with Hanger Bolt attachement options to meet the installation...

  • Page 24: Determine Length Of Hanger Bolt

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 5.3 Locate and Mark attachment points The location of attachment points for standoff mounts depends on the orientation of the modules relative to the rafters and the allowable rail spans from the engineering tables in Section 13.

  • Page 25: Fastening Hanger Bolt Clamp

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Be sure to drill the hole deep enough to taken to not deform the threads at the top of penetrate the roof decking and enter the the bolt. rafter by 1 inch to 1½ inch. If the drill pushes 5.5 Fastening Hanger Bolt Clamp through at this point, you have likely missed a rafter and should move ½ inch laterally...

  • Page 26: Locate, Mark & Drill Attachment Points

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 5.7 Locate, Mark and Drill Attache- the block at the pilot hole. Drive the Lag Bolt ment points into the wood beam, securing the roof block and attachment hardware. Confirm the location of the rafters, beams or...

  • Page 27: Identification Of Seam Type

    5.10 Identification of Seam Type mount to the rails in a standard Series 100 installation. SnapNrack Seam Clamps are ideally suited for single roll and double roll standing Alternately, the seam clamps can be used seams. The Standard Base Seam Clamp...

  • Page 28: Tilt Mount (Using Standoffs And Extensions)

    4. 9 inches, please contact SnapNrack tech 6.2 Determine type of tilt assembly support for recommendations. There are two types of tilt assemblies for...

  • Page 29: Full Tilt Kits

    If rear standoff height For this type of installation, complete the exceeds 18 inches contact SnapNrack tech support staff for recommendations. Fig 6.1 - tilt assembly detail for angles less than 15 degrees...

  • Page 30: Installing On L-Feet

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual for the two rails to provide a flush mounting 6.5 Installing on L-feet surface for the modules at the desired In some cases it may be desirable to install module tilt angle.

  • Page 31: Install Rails

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual row of modules along the top of a north facing 8. Install rail splices roof slope is “tilted back” to match the south facing roof slope on the other side of the 8.1 Snap in splice insert...

  • Page 32: Level Rails

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 9. Level rails 9.1 Overview Rails can be leveled by raising or lowering the points where they attach to the L-foot or standoff assembly. Up to 1 inch of adjustment is achieved with Fig 9.0 - Snap in channel nuts...

  • Page 33: Additional Leveling For Standoff Mounted Rails

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 9.3 Additional leveling for standoff mounted rails check all 5/16-inch bolt hardware is tightened to the correct torque: An additional 1 inch or 2 inches of height can be added by installing one or two 1-inch - Silver hardware - 10-16 ft-lbs.

  • Page 34: Install Modules On Rails

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual - 1X SNAPNRACK - 2X SNAPNRACK LEVELING SPACER LEVELING SPACER - 1X "-18 X 1" LONG - 2X "-18 X 1" LONG SET SCREW SET SCREW RAIL HEIGHT =9.5" RAIL HEIGHT =10.5"...

  • Page 35: Set First Module

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual Fig 10.1 - installed top-Mount end clamp Fig 10.4 - Snap Mid clamp assembly into Rail 10.2 Set first module Place the first module, taking care to line the module up to the rails and roof edges.

  • Page 36: Connect Wiring

    Use module lead clips as necessary to insure that module leads are secured to module frames until they drop into the rail channel. SnapNrack rail cover can be used to help retain the wire in the channel. 10.4 Connect grounding Install grounding hardware per PV module manufacturer’s specifications.

  • Page 37: Connect Grounds

    The SnapNrack Channel cover can be used to retain the wires in the channels. It can be cut to short sections with...

  • Page 38: Install End Caps

    11.3 End Caps well. The SnapNrack black rubber end caps should Attach screen to clips with rivets and washers be installed now. They are simply pressed on included in the kit. Thread forming screws to the end of the rail or if needed a rubber can be used in place of rivets if desired.

  • Page 39: Appendix

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 13. Appendix 13.1 Engineering certification letter We also have letters with engineering seals for other states. All engineering is done to IBC2009.
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  • Page 48: Rail Span Tables

    SnapNrack SERIES 100 Roof MounT InSTall aTIon Manual 13.2 Rail span tables | 47...
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  • Page 79: Snapnrack Warranty

    1 0 Y E A R L I M I T E D P R O D U C T WA R R A N T Y | 5 Y E A R L I M I T E D F I N I S H WA R R A N T Y Limited Warranties. SnapNrack, Inc. (“Manufacturer”), the manufacturer of the SnapNrack photovoltaic solar module racking product (the “Product”), warrants to the end-user of the Product (“you”), that while installed as part of the original solar electric...

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