SnapNrack Topspeed Mounting System User manual

Solar Mounting Solutions
TopSpeedTM Mounting System
Installation Manual
snapnrack.com

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An Intro to SnapNrack TopSpeed™ with SpeedSeal™ Technology
SnapNrack’s primary goal is to provide our customers with the lowest possible installed
cost for mounting residential solar modules, without compromising the values the industry
has come to expect: ease of use, quality, aesthetics, and safety. Designing with this goal in
mind, we are proud to present the SnapNrack TopSpeed™ mounting system with SpeedSeal™
Technology.
SnapNrack has created a ground breaking system combining great features and benefits we
are known for, with our TopSpeed™ System and the most up to date technical innovation in the
industry, thus reducing parts while driving down labor, material, and total installation costs.
Designed to work with standard module frames, achieving UL 2703 Listing for Grounding/
Bonding and Fire Classification, providing integrated wire management, aesthetics and
our industry leading "Snap-In" features, SnapNrack is providing the simplest and most cost
eective solar mounting solution on the market with TopSpeedTM including integrated fasteners
and SpeedSeal™ Technology.
Advantages of Installing the SnapNrack TopSpeedTM System
Modules are installed with a minimum number of parts
This elimination of parts leads to a lower estimated system cost for both the installer and
home owner.
Built in Wire Management and Aesthetics
Extensive wire management solutions have been designed specifically for the system
that adapts to multiple possible mounting positions.
The system is designed to be aesthetically pleasing and sturdy with a skirt that provides
considerable strength at the leading edge and an elegant look for those seeking high end
looking systems.
SnapNrack TopSpeed™ includes SpeedSeal™ Technology
SpeedSeal™ Technology features integrated flashing. This eliminates loosening layers
of composition and removing nails with a pry bar, leading to less damage to the roof,
minimized potential roof leaks, and much faster installs.
TopSpeed™ Mounts attach Directly to the Decking
As well as all of the benefits associated with the standard SpeedSeal™ Technology,
TopSpeed™ attaches to the roof sheathing and does not require rafter attachment.
Simply attaching to the roof sheathing removes the requirement for finding rafters and
drilling pilot holes, creating potential rafter misses that can cause leaks.

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Table of Contents
Project Plans
Certification Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pre-Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation Steps
TopSpeedTM Skirt Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
TopSpeedTM Mount to Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
TopSpeed™ Mount Skirt Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Wire Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
MLPE Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Grounding Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Maintaining the Grounding Bonding When Removing a Module . . . . . . . . . . . . . . . . 23
Appendix A: List of approved Modules and MLPEs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

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Certification Details
SnapNrack TopSpeed™ mounting system has been evaluated by Underwriters Laboratories (UL) and
Listed to UL Standard 2703 for Grounding/Bonding, and Fire Classification.
Grounding/Bonding
Only specific components have been evaluated for bonding, and are identified as being in the ground
path. The TopSpeed™ components that have been evaluated for bonding are the Mount Assembly
(Mount Clamp Top, Module Clamp Tower, Angle Bracket), Clamp Assembly, Universal Skirt, Universal
Skirt Clamp, Ground Lugs, and Smart Clips.
Universal Skirt Spacers, Mount Channel Nut, and Mount Base are not required to be bonded to the
system based on the exceptions in clause 9.1 of UL 2703 1st Ed. Wire management clips are utilized to
route conductors away from these components and must be assembled according to the instructions.
This mounting system may be used to ground and/or mount a PV module complying with UL 1703
or UL 61703 only when the specific module has been evaluated for grounding and/or mounting in
compliance with the included instructions. See Appendix A for the list of modules tested for use with
the TopSpeed™ System for integrated grounding.
Ground Lugs have been evaluated to both UL 467 and UL 2703 Listing requirements. The following
ground lugs have been approved for use: SnapNrack model 242-92202, and Ilsco models GBL-4DBT
and SGB-4.
The following components have been evaluated for bonding as the fault current ground path:
TopSpeed™ Mount Assembly, (Mount Clamp Top, Module Clamp Tower, Angle Bracket), Clamp
Assembly, Wire Management Clips, and Ground Lugs. In order to maintain the Listing for bonding,
wire management clips must be assembled to route conductors away from parts that have not been
evaluated for bonding.
A Listed (QIMS) and Unlisted Component (KDER3) grounding lug, SnapNrack part no. 242-92202, is
attached to the module frame flange for the normal attachment of a Grounding Electrode Conductor,
which provides bonding within the system and eventual connection to a Grounding Electrode, as
required by the U.S. NEC. Details of part no. 242-92202 can be found in Volume 1, Section 4, and
Volume 2, Section 2. When this method is used, the grounding symbol is stamped onto the body of the
ground lug to identify the grounding terminal.
An alternate method of grounding, a UL Listed (KDER and QIMS) grounding lug, Ilsco (E34440
and E354420) model SGB-4 is attached to the module frame flange. When this method is used, the
grounding terminal is identified by the green colored screws of the lug.
An alternate method of grounding, a UL Listed (KDER and QIMS) grounding lug, Ilsco (E34440 and
E354420) model GBL-4BDT is attached to the module frame flange through the specified hardware and
torque values. When this method is used, the grounding terminal is identified by the green colored set
screw of the lug.
An alternate method of grounding, Enphase R/C (QIKH2)(QIMS2) model M250, M215 & C250 is bonded
to the Listed PV module frame by the Enphase R/C (QIMS2) Model EFM-XXMM anodization piercing
mounting/clamping kit. The total roof-mounted PV system is bonded (modules and microinverters)
together and the assembly is bonded to ground through the Enphase R/C (QIMS2) Engage Cables;
Model ETXX-240, ETXX-208 or ETXX-277, when properly grounded at the service entrance.
R/C (QIMS2), Dynoraxx (E357716) photovoltaic bonding device cat. no. Dynobond is an optional
component that may be used with this system. The Dynobond device has been evaluated to provide
module to module bonding. The Dynobond device attaches to the frame flange of adjacent modules
Listed (QIMS), SnapNrack MLPE Frame Attachment Kit model 242-02151 has been investigated to bond
approved MLPE device back plates to frames of modules.

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Fire
SnapNrack TopSpeed™ has been investigated for a Class A System Fire Classification for Steep-Sloped
and low sloped roofs with Type 1 and Type 2 modules. Because the system was tested at 5 inches
above the test roof fixture, TopSpeed™ can be installed without any height restrictions due to System
Fire Classification. See Appendix A for potential module-specific height restrictions due to module
temperature. The Skirt is considered an optional component with respect to Fire Classification, as
SnapNrack TopSpeed™ maintains the same Fire Classification Rating both with and without the skirt.
NOTE: Modules with an asterisk* have a fire rating that is dierent from Type 1, Type 2 or Type 29. SNR
systems have only been evaluated for use with Type 1, Type 2, or Type 29 modules. Modules with a
dierent fire type rating should be considered to not have been evaluated for use with SNR systems
with respect to a system fire rating.
Inspection Practices
SnapNrack recommends a periodic re-inspection of the completed installation for loose components,
loose fasteners, and any corrosion, such that if found, the aected components are to be immediately
replaced.

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5
TopSpeed™ Structural Components
Component Details
TopSpeed™ Clamp
TopSpeed™ Mount
SnapNrack TopSpeed™ Clamp
assembly including including Link
bottom, Link top, and springs.
SnapNrack TopSpeed™ Mount
assembly including SpeedSeal™ base,
clamp top, and (4) SnapNrack #14 SS
Wood Screws with 1/2" Hex Head.
Universal Skirt
SnapNrack Universal Skirt in double
portrait or single landscape lengths.
Skirt Spacers
SnapNrack Universal Skirt Spacer for
40mm, 38mm, 35mm, 32mm, and
30mm modules.
Smart Clip XL
Wire Saver
Module frame cable clip, holds six
PV wires or four Enphase IQ-Cable.
Designed to secure conductors that
become loose and hang below the
array, holds one conductor.
Smart Clip
Module frame cable clip, holds two
PV wires or Enphase IQ-Cables.
Wire Managements Components
Grounding/MLPE Components
Ground Lug
SnapNrack Ground Lug assembly
used for attaching the Equipment
Grounding Conductor on to one
module or any TopSpeed™ Mount
per array.
MLPE Frame Attachment Kit
Attaches MLPEs (Module Level
Performance Enhancers) and other
related equipment to the module
frame.

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6
Component Details
q
Hardware Description Torque Specification
All TopSpeed™ ½” bolts; System Leveling Bolt, TopSpeed™ Mount Clamping Bolt, Clamp Bolt 16 ft-lb
Ground Lug model 242-92202 to Module Frame or anywhere on the TopSpeed™ Mount, and Ground
Lug model 242-92202 to Grounding Electrode Conductor (6-12 SOL) 8 ft-lb
MLPE Frame Attachment Kit, MLPE Rail Attachment Kit 10 ft-lb
SolarEdge Frame Mounted Microinverter Bracket to Module Frame 11 ft-lb
Enphase Frame Mounted Microinverter Bracket to Module Frame 13 ft-lb
Ground Lug model SGB-4 to module 75 in-lb
Ground Lug model SGB-4 to Grounding Electrode Conductor (4-14 SOL or STR) 35 in-lb
Ground Lug model GBL-4DBT to module 35 in-lb
Ground Lug model GBL-4DBT to Grounding Electrode Conductor (10-14 SOL or STR) 20 in-lb
Ground Lug model GBL-4DBT to Grounding Electrode Conductor (8 SOL or STR) 25 in-lb
Ground Lug model GBL-4DBT to Grounding Electrode Conductor (4-6 SOL or STR) 35 in-lb
Hardware Torque Specifications
The recommended torque to be applied to components for proper assembly and bonding are as
follows:

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7
Site Survey
ò Measure the roof surfaces and develop an accurate drawing,
including any obstacles such as chimneys and roof vents.
ò If plans for the roof structure are available, verify that the
plans match the final structure.
ò Identify any roof access or setback areas as required by the
local AHJ.
ò Identify any construction issues that may complicate the
process of locating rafters from the roof surface.
ò If you find structural problems such as termite damage or
cracked rafters that may compromise the structure’s integrity
consult a structural engineer.
Pre-Installation Requirements
Design Guidance
ò PV Designers should account for the 0.75 inch spacing
between rows and columns of modules when creating the layout.
ò Determine site conditions for calculating the engineering
values, confirm site conditions and code versions comply with
local AHJ requirements.
ò Reference site conditions and system specifications in
TopSpeed™ Structural Engineering Report to determine the
number of attachments per module side.
ò Insert SnapNrack installation details into design plan set
specific to the project requirements.
ò Draw roof attachment locations on plan set layout based on
TopSpeed™ Structural Engineering.
ò Identify homerun and Junction Box locations based on
rooftop wiring requirements.
ò Mark distance from array edge to identifiable roof feature in x
and y axes.
X-AXIS
Y-AXIS 22'-4"
44'-0"
11'-2"
24'-0"
34'-0"
3'-0"
3'-0"
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
27'-6"
22'-0"
16'-6"
10'-0"
Image note: X-Axis described in this manual is cross-slope
on the roof, Y-Axis is in line with the roof slope.
Safety Guidance
ò Always wear appropriate OSHA approved safety
equipment when at active construction site.
ò Appropriate fall protection or prevention gear should be
used. Always use extreme caution when near the edge of a
roof.
ò Use appropriate ladder safety equipment when accessing
the roof from ground level.
If environmental load conditions require three TopSpeed™ attach-
ments per module side this is only required when modules share
attachments.
Best Practice:
Image note: This four module array is installed in a high load
configuration with three attachments per side where two
modules share attachments. See highlighted area. As shown,
three attachments are never required at the skirt or the top
of the array.
Safety Guidance Continued
ò Safety equipment should be checked periodically for wear
and quality issues.
ò Always wear proper eye protection when required.

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8
Required Tools
òSocket Wrench/Impact Driver òTorque Wrench ò1/2” Socket
TopSpeed™ Mount to Module Frame Installation
Materials Included - TopSpeed™ System with SpeedSeal™ Technology
(1) SnapNrack TopSpeed™ Mount
(4) SnapNrack #14 Wood Screw with 1/2" Hex Head & sealing washer
q
INSTALLATION INSTRUCTIONS
Attach all TopSpeedTM mounts as the modules are
being prepped with MLPEs on the ground. Attach
Mounts before attaching MLPEs to simplify wire
management.
Best Practice:
2) Position TopSpeed™ Mount clamp
on the module frame within the
module manufacturers required
clamping zone.
3) Tighten 1/2" clamping bolt to 16
ft-lb. Only two Mounts are required
per module on one side.
For high load conditions add a third
attachment in the middle of the
module frame.
Install Note:
1) Assemble all TopSpeed™ Mounts
required for the installation. Slide
the clamp tower assembly into the
angle bracket riser and tighten the
leveling bolt to 16 ft-lbs.

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9
LAYOUT INSTRUCTIONS
Required Tools
ò Roof Marking Crayon or Chalk ò Tape Measure
1) Use a tape measure to verify that all modules will fit
properly on the roof surface.
2) On the roof draw the layout for the skirt installation
including module gaps (recommended 0.75 inch gap),
bottom corners, and locations of the two TopSpeed™
attachments per module that clamp to the skirt. Three
attachments per module is never required at the skirt.
TopSpeed™ Universal Skirt Layout
Ensure the final roof attachment locations do not exceed the maximum attachment spacing and cantilever
specified in the design plan
If environmental load conditions require three TopSpeed™
attachments per module side this is only required when
modules share attachments.
Install Note:

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10
Required Tools
òSocket Wrench/Impact Driver òTorque Wrench ò1/2” Socket òRoofing sealant
TopSpeed™ Mount: Skirt Installation
Materials Included - TopSpeed™ Mount with SpeedSeal™ Technology
(1) TopSpeed™ Mount
(1) TopSpeed™ Clamp
(1) Universal Skirt
(1) Universal Skirt Spacers
(1) OPTIONAL - Universal Link
q
e
e

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11
TopSpeed™ Mount Skirt Installation
INSTALLATION INSTRUCTIONS
4) Loosen Course Adjustment bolt
and adjust end Mounts up or down
until aligned with bottom edge of
array as marked on the roof, then
tighten the Course Adjustment bolt.
5) To set the TopSpeed™ Mount
level loosen the Leveling bolt and
move the clamp up or down, then
tighten the Leveling bolt and torque
to 16 ft-lb.
1) Install TopSpeed™ Mounts
at locations drawn during the
skirt layout. Mounts must be
installed entirely on one course of
composition.
2) Fill both cavities on bottom
of TopSpeed™ Mount created by
SpeedSeal™ gasket with roof sealant
to ensure a watertight seal.
3) Attach TopSpeed™ Mount to roof
using the (4) SnapNrack #14 Wood
Screws with 1/2" hex head that are
captured in the Mount.
Use the string line alignment feature
on Mounts to level and align the
Mounts.
Install Note:
Roof sealant should be expelled from
both vents of the TopSpeed™ Mount
as it is installed to assure the proper
amount of roof sealant has been
applied. If sealant is not expelled from
all four vents, remove TopSpeed™
Mount, add more sealant to the cavity,
then reinstall.
Install Note:
6) Pull string line tight from one
corner mount to opposite corner
mount to align and level all
TopSpeed™ Mounts between the
end mounts.

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12
TopSpeed™ Mount Skirt Installation
INSTALLATION INSTRUCTIONS
7) Universal Spacers will need to be
added to Mounts and Clamps where
Skirt will be installed.
8) Install Universal Skirt by holding
the skirt in Mount, sliding Skirt to
align with array layout marks, and
clamping skirt into mount.
9) Use TopSpeedTM Clamps to
connect multiple lengths of Array
Skirt.
Optionally use Universal Links to
connect lengths of Array Skirt.
Install Note:

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13
Wire Management
Required Tools
ò Socket Wrench ò Torque Wrench ò 1/2” Socket ò Electrician Tools
Materials Included
(1) Smart Clip [(2) PV Wire, (1) Enphase IQ Cable]
(1) Smart Clip XL [(6) PV Wire, (4) Enphase IQ]
(1) Wire Saver [(1) PV Wire]
q
e
Smart Clips
Smart Clip XL Wire Saver
qe
Smart Clip

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14
Wire Management
INSTALLATION INSTRUCTIONS - GROUND LUG
1) Ground Lug (242-92202) can be
attached anywhere along the module
frame or any TopSpeed™ Mount near
the Junction Box. Torque module
clamping bolt to 8 ft-lb.
2) Run 10 – 6 AWG, solid, bare copper
GEC into Ground Lug channel, torque
wire clamping bolt to 8 ft-lb.
The SnapNrack Ground Lug to be used in accordance with the National Electric Code, ANSI/NFPA 70.
3) Run bare, solid EGC from Ground
Lug R to Junction Box, bond bare EGC
to stranded EGC in Junction Box. For
details on installing the Junction Box
reference the Junction Box Installation
Manual.
4) Optionally; Install Ground Lug on the Mount Landing Pad at the top of the
array. Run bare copper between ground lug and Junction Box.

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15
Wire Management
INSTALLATION INSTRUCTIONS - SMART CLIPS
SmartClip and SmartClip XL should be used to route conductors in a neat and workmanlike
manner away from all non-bonded components and support the conductors adequately to
eliminate potential damage.
1) Use SnapNrack Smart Clip II to
manage up two PV wires inside the
module frame while prepping out the
modules on the ground or installing
modules on the roof.
2) Use SnapNrack Smart Clip XL to
manage larger bundles of PV wire; up
to 6 PV wires per clip

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16
Required Tools
ò Socket Wrench ò Torque Wrench ò 1/2” Socket
MLPE & RSD Installation
Materials Included
(1) SolarEdge Optimizer w/ Frame-Mounted Module
Add-On
q
SolarEdge Frame Mount
(1) Enphase Microinverter
(1) Enphase Frame Mount
q
Enphase Frame Mount
SOLAREDGE
q
q
Materials Included - MLPE Rail Attachment Kit
(1) SnapNrack MLPE Frame Attachment Top
(1) SnapNrack MLPE Frame Attachment Bottom
(1) 5/16”-18 X 3/4” Serrated Flange Bolt SS
(1) SnapNrack Smart Clip
(1) SnapNrack MLPE Frame Attachment Coil Spring SS
q
e
2
3
1
4
5

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17
MLPE & RSD Installation
INSTALLATION INSTRUCTIONS - SNAPNRACK MLPE FRAME ATTACHMENT KIT
A
1) Slide the backplate channel of the
MLPE device under the MLPE Frame
Attachment Kit bolt. The MLPE
mounting plate should rest against
the MLPE mounting plate backstop
on the MLPE Frame Attachment Kit.
2) Position the MLPE Frame
Attachment Kit on the module
frame flange in a location that
will not interfere with mounting
system components. The module
frame flange should rest against
the module flange backstop on the
MLPE Frame Attachment Kit.
A
3) Tighten the mounting bolt on the
MLPE Frame Attachment Kit to 12
lb-ft (144 lb-in).
Avoid blocking module frame
drainage holes when installing the
MLPE Frame Attachment Kit.
Install Note:
4) Connect the module leads to
the input connectors on the MLPE
device and manage conductors with
the integrated Smart Clip.
The MLPE Frame Attachment Kit
bonds the following components:
Module Frame, MLPE backplate and
Smart Clip.
Install Note:
SnapNrack MLPE Frame Attachment kit are used to attach module level performance enhancing devices, and other devices such
an SRD (rapid shutdown device), directly to module frames, and provide integrated grounding/bonding for Devices grounded
through metal back plate. (Refer to the list of tested MLPE devices on page XX of this manual).

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18
MLPE & RSD Installation
INSTALLATION INSTRUCTIONS - SOLAREDGE FRAME MOUNT
SOLAREDGE
1) Locate the SolarEdge optimizer
with Frame-Mounted Module Add-
On at a location on the module
frame that will not interfere with the
TopSpeedTM Mounts.
2) Install the optimizer mounting
plate onto the module frame and
tighten hardware to 11 ft-lbs.
3) Connect the module leads to the
input connectors on the optimizer
and manage conductors with
SnapNrack Smart Clips.
If module is mounted in portrait,
install MLPE on long side, short side
for landscape.
Install Note:
INSTALLATION INSTRUCTIONS - ENPHASE FRAME MOUNT
1) Locate the Enphase Frame Mount
bracket clamp at a location on the
module frame that will not interfere
with the TopSpeedTM Mounts.
2) Slide the microinverter unit onto
the bracket clamp, then move it
slightly to the left.
3) Tighten the hardware to 13 ft-lbs.
4) Connect module leads to
microinverter DC connectors.
The microinverter mounting flange
should be on the outside of the
module frame.
Install Note:
Refer to the Enphase Frame Mount
installation guide for additional
instructions.
Install Note:

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19
Required Tools
ò Socket Wrench ò Torque Wrench ò 1/2” Socket ò Roofing Sealant
Module Installation
Materials Included
SnapNrack TopSpeed™ Mount
SnapNrack TopSpeed™ Clamp
Other Materials Required
SnapNrack Smart Clip (2-5 per module)
See Wire Management section for details
SnapNrack Smart Clip XL (10-20 per array)
See Wire Management section for details
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