Ecox Installation Guide Rev 1.12

Installation Guide

Gen2

EcoX Gen2 Installation Guide, Rev 1.12 Table of Contents EcoX Product Overview ...... ii Installer Responsibility ...... ii Warnings & Safety ...... ii General Application Notes ...... iii Revision History ...... iv EcoX Components ...... 1 Overview of Components ...... 3 Layout Array on Rooftop ...... 4 Prepare the Modules ...... 6 The Basics of Wire Management ...... 7 Install Attachments to Roof ...... 8 Install the Junction Box Bracket ...... 10 Install the Clamp Assemblies ...... 11 Level and Align the Clamp Assemblies on Southern Row ...... 12 Install Skirts on Downhill Row ...... 14 Install Modules ...... 17 Level the Modules ...... 21 Grounding and Bonding (overview) ...... 22 Appendix A: How to Replace the Clamp Assembly with a Coupling ...... A-1 Appendix B: Thermal Expansion ...... B-1 Appendix C: Service and Maintenance...... C-1 Appendix D: Modules Evaluated as part of EcoX UL 2703 Certification ...... D-1 Appendix E: Power Accessory Bracket Installation ...... E-1 Appendix F: Installing Skirt-Less Clamp Assemblies ...... F-1 Appendix G: Installing EcoX on a Membrane Roof ...... G-1

EcoX Gen2 Installation Guide, Rev 1.12 i Introduction Installer Responsibility Warnings & Safety EcoX is an innovative, simple, and easy to install The installer is solely responsible to: Both electrical and roofing knowledge is required to correctly and safely install a solar photovoltaic flush-mount solar racking system. By eliminating the l Comply with all applicable building and electrical mounting rail, EcoX offers a flexible system layout and codes system. Only qualified and certified installation streamlines the installation process. EcoX utilizes professionals should install EcoX. Failure to follow l Meet municipal, utility and inspector requirements aluminum components with stainless steel hardware, the methods and procedures outlined in this guide ensuring the system will withstand harsh installation l Ensure installation methods and procedures meet may result in injury and/or damage to property. environments. With EcoX, the racking and modules all applicable OSHA safety standards Carefully read this guide before starting any work. work together as a system, creating an l Confirm all building structural members and Store a copy of this guide on the job site at all times interconnected, continuously bonded structure. related connections can withstand all forces and contact Ecolibrium Solar with any installation questions related to EcoX. This install guide outlines the overall installation resulting from the EcoX installation process, and details the steps involved. Ecolibrium l Maintain waterproof integrity of all existing roofing Please note the following warnings when installing support staff are available to answer questions or materials EcoX: offer support. Feel free to contact us, and thank you l Verify all design criteria are correct and appropriate l EcoX Bonding Clip may have sharp edges for installing EcoX! for the application and specific site l EcoX components fit together tightly and could l Follow all manufacturer's specifications, cause pinch injuries recommendations and manuals l EcoX components may be hot to the touch if left in the sun. l Check that only Ecolibrium Solar approved materials are utilized during EcoX installation Please follow the safety requirements below when l Guarantee array installation is completed by installing EcoX: qualified and competent personnel l Always keep children and unauthorized people l Verify all equipment and materials are appropriate away from work areas for application and site conditions l Always wear required OSHA approved Personal Protective Equipment (PPE) l Establish that anchoring devices, including lag screws, have adequate pullout strength and shear l Always use insulated tools when working with or capacities as installed near electrical systems l Always provide OSHA approved fall protection for l Determine that PV module is approved for use with EcoX and is capable of withstanding the project all installation personnel specific conditions. l Never wear jewelry during mechanical and electrical installation work l Never work in rain, snow or extremely windy conditions l Never leave a module unsupported or unsecured on the roof l Never install broken photovoltaic modules l Never use photovoltaic modules as a work surface

EcoX Gen2 Installation Guide, Rev 1.12 ii EcoX General Application Notes Module Types: EcoX is certified to be installed with standard framed 60 cell System Design and Span Requirements: EcoX is designed to flush-mount modules according to the approved module list. photovoltaic modules on pitched roofs as described in this guide. The span Mechanical Loading: EcoX is certified to UL2703 for mechanical loading. between attachment locations depends on the module, the site conditions, Tested modules are listed in Appendix D. Span requirements for a given and the system layout. jobsite can be determined using the EcoX Estimator design tool: Site Specific System Design: The EcoX Estimator is a powerful system design http://ecox-estimator.ecolibriumsolar.com tool. The user inputs all site conditions and can layout multiple roof surfaces. Fire Testing: EcoX is certified to UL2703/1703 Fire Resistance Standard with The EcoX Estimator outputs a site specific design package with engineering the following requirements: specs and bill of materials. l Instructions in this guide must be followed. Visit the EcoX Estimator at http://ecox-estimator.ecolibriumsolar.com to l The EcoX system must be mounted over a fire resistant roof covering rated layout your array and instantly obtain attachment spacing, bill of materials, for the application. l and engineering analysis. Modules may be installed in landscape or portrait l The EcoX fire rating is valid with or without a skirt. Roof Type: EcoX is designed to mount photovoltaic modules to a range of roof l All height settings of EcoX product are valid, up to highest setting surfaces, including : (corresponds to 4 ¼” from roof surface to lower edge of module frame). l Asphalt or composite shingles For pitches greater than 2:12 (9.46 degrees): l Concrete or clay tiles (see Addendum ) l EcoX is certified to Class A with Type 1 and 2 modules. l Membrane roof l Junction box must be mounted away from the roof downhill edge. Metal roofs are permitted as long as the method of bonding and grounding For pitches less than 2:12 (9.46 degrees), aka “flat“ or “low-slope“ roofs: the metal roof is approved by AHJ. Contact Ecolibrium Solar if your project’s l EcoX is certified to Class A with Type 1 modules. roof surface type is metal, or not listed above. l Junction box can be mounted at any location. Wind Zone: EcoX is designed to mount photovoltaic modules on pitched roof Grounding and Bonding: EcoX is certified to UL2703 for grounding and surfaces in areas with extreme wind conditions. Please contact Ecolibrium bonding. The grounding and bonding test evaluates EcoX as a system with Solar if your project's wind speed exceeds the zone allowable in the EcoX approved modules. When installed per the requirements outlined in this Estimator. installation guide, EcoX with approved modules are rated as a system to Roof Height: EcoX is designed to mount photovoltaic modules on pitched roof create a continuous bonded structure. surfaces with a mean roof height up to 60 feet. Please contact Ecolibrium Installation Requirements: This install guide officially documents the Solar if your project's mean roof height exceeds 60 feet. components used and proper methods for an EcoX installation. Bonding Roof Pitch: EcoX is designed to mount photovoltaic modules on roof surfaces elements are incorporated into EcoX components. As the system is built on between 0 and 90 degrees from horizontal. the roof, components and modules are bonded together. Specific steps to ensure a bonded system are described through the installation guide. It is the Roof Zones: EcoX is designed to mount photovoltaic modules on pitched roof installer's responsibility to ensure that the system is safely and properly surfaces in all roof zones with attachment spacing as prescribed in the EcoX installed, and that the system is bonded back to a final ground point. There Estimator. are no specific array size limitations due to the flexible and expandable design Roof Orientation: Throughout this manual, “downhill” is used to reference of EcoX. the direction of the lower or leading edge of the array, and “uphill” is used to UL2703 System Documentation: To document the UL2703 system rating, a reference the direction of the trailing or back edge of the array. label is factory-applied to the end of each skirt. For skirt-less configuration, a EcoX Certifications label is factory-applied to the side of the End Clamp assembly. Below is an Approved Modules: This racking system may be used to ground and/or example of the label: mount a PV module complying with UL 1703 only when the specific module has been evaluated for grounding and/or mounting in compliance with the included instructions. Specific modules included in EcoX certifications are documented in Appendix D at the end of this install guide.

EcoX Gen2 Installation Guide, Rev 1.12 iii Revision History - Install Guide

Revision Description of Changes Date 1.0 Initial Release 2015-July

1.1 Updated UL 2703 Specifications 2015-August 1.2 Updated UL 2703 Specifications 2015-September

1.3 Updated for LA County Requirements 2015-October 1.4 Updated for 32mm Modules and Uphill 2016-January Bonding Clip

1.5 Updated bonding lug instruction 2016-March

1.6 Updated for membrane roof and additional 2016-December approved modules

1.7 Updated Appendix D with additional UL 2017-September 2703 qualified modules 1.8 Updated Appendix D 2017-October

1.9 Added Modules to Appendix D 2017-November 1.10 Added Modules to Appendix D 2018-January 1.11 Added Modules to Appendix D 2018-April 1.12 Added Modules to Appendix D 2018-July

EcoX Gen2 Installation Guide, Rev 1.12 iv EcoX Components

Attachment Kit The Attachment Kit is Clamp Assembly The Clamp Assembly is secured to the roof and mounted to the Base of supports the array via the Attachment Kit. the Clamp Assembly. 5/16" Lag Screw Upper Clamp l Dovetail Engagement with Sealing Its features include: Serrated to Base for height and Washer l Grooves along sides of Strut Bolt uphill/downhill Base Base are Dovetail Lower Clamp adjustments. (tongue supports Engagements which l Upper and Lower Dovetail provide adjustability downhill edge Clamp secures edges Engagements of the Clamp of Module) Bonding Clip of Modules (mates to Glider) Assembly in height (not visible) l Upper and Lower and uphill-downhill Clamp engage Skirt on directions. Skirt row. l Flashing Base is attached via a Dovetail l Strut Bolt and Strut single Lag Screw. Glider Engagement Nut secure Clamp l Lag Screw includes a (mates to Base) Assembly to Base and factory pre-installed Modules to Clamp Sealing Washer. Dovetail Assembly. l Factory installed Bond Torque Spec: 14 ft-lbs Engagement Strut Nut (mates to Skirt) Clip bonds Skirt to Attachment Kit on south row, and Module to Attachment Kit on Torque Spec: 14 ft-lbs subsequent rows.

Coupling Assembly Couplings connect up to Skirts (optional item) Skirts are used on the four Modules together. first downhill row to l Couplings include enhance the Alignment Indicators indicator marks to set appearance along the a 1/2" gap between edge of the array. Upper Clamp Serrated Modules. Dovetail Engagement l Dovetail Engagement Hex Bolts (mates to Clamp l On the first downhill positions height of Lower Clamp row, Couplings secure Assemblies and and locks Skirt to adjacent Skirts at their Couplings) Clamp Assemblies and (tongue supports Couplings. downhill edge Bonding Clip joints. l of Modules) (not visible) l Factory installed Bond Factory cut to length Clips (two per to match specific Coupling) bond Modules. Modules left and right. l Available in three Bonding Clip configurations (height Torque Spec: 14 ft-lbs variances) to fit the (not visible) most common Dovetail Module sizes. Engagement (mates to Skirt) See Appendix G for skirt-less installation details.

EcoX Gen2 Installation Guide, Rev 1.12 1 of 31 EcoX Components (cont.) Power Accessory Bracket Row to Row Bonding Clip Junction Box Bracket

Power Accessory Bracket mounts a micro-inverter or power optimizer to the Module. l The serrated teeth ensure a secure connection to the The Row to Row Bonding Clip bonds each row of modules The Junction Box Bracket mounts to the Base, and acts as a module. to the next. support for a Junction Box. l The Power Accessory Bracket bonds the micro inverter or l Bonding Clip is added to the uphill side of one clamp per l Can be installed to any base. power optimizer to the Module. row. l Can be installed before or after modules are installed. l For systems using the skirt, Bonding Clip bonds skirt to Torque Spec: 14 ft-lbs first row of Modules. Torque Spec: 10 ft-lbs

End Clamp The End Clamp is End Coupling End Coupling connects mounted to the base on two modules left to the downhill row, and right. Upper may be used in place of Upper l End Couplings include End the Skirt for a Skirt-Free End indicator marks to set Clamp installation. Coupling Serrated a ½” gap between Bonding Clip l Dovetail Engagement Hex Bolt Modules. (not visible) to base for height and l Factory installed uphill/downhill Bonding Clips (two per Serrated adjustment. End Coupling) bond Strut Bolt l Upper End Clamp modules left to right. secures module. Torque Spec: 14 ft-lbs l Integrated bonding clip bonds module to clamp and Attachment Kit. Bonding Clip (not visible) Torque Spec: 14 ft-lbs Glider Lower End Bonding Clip Coupling (not visible) Strut Nut (partially visible)

EcoX Gen2 Installation Guide, Rev 1.12 2 of 31 Overview of Components

The EcoX installation begins at the downhill edge of the roof and progresses uphill. Installation is sequential and requires minimal hand tools. Installation steps: 1. Layout Array on rooftop. Coupling 2. Install Attachment Kits to rooftop. 3. Install the Junction Box Bracket. 4. Install Clamp Assemblies on Coupling downhill row. 5. Install the Skirts. 6. Install Couplings to Skirts. 7. Install Modules 8. Install Clamps and Couplings on uphill side of Modules. 9. Level the row of Modules. Clamp 10. Repeat Module Adjoining install on Skirts subsequent rows. 11. Install additional Bonding Clips at one end of each row to complete row to Modules Skirt row bonding. (transparent for Required Tools: visual clarity) l Tape Measure l Chalk Line l Hammer Attachment Kit l Drill with 3/16" Bit l Flat Roofing Bar l Impact Driver l 1/2" Socket l String Line l Torque Wrench l Chalk Note: Rooftop and shingles not shown for clarity

EcoX Gen2 Installation Guide, Rev 1.12 3 of 31 1. Layout Array on Rooftop

1a. Mark the Four Corners of Array Using chalk, layout the footprint of the array on the rooftop. Look for any obstructions on the Mark Footprint rooftop that could of Array 1/2" Gap 1/2" Gap Modules prevent a complete and proper installation of the array. 1. Starting from the downhill edge, place a mark 2-1/2" up from the bottom edge of the downhill course of shingles. 2. Using the Module dimensions include the following: l Left/right include a 1/2" gap between 3/4" Modules. Gap l Uphill/downhill includes a 3/4" gap between Modules. Module The following page continues this layout Width and illustrates a finished rooftop layout. Knowing where the 3/4" Modules intersect Gap will identify potential interferences between Attachments and Couplers. Module Most AHJ’s require a Width roof setback per their local fire code requirements. Make sure that the required setback is observed 2-1/2" when marking the footprint of the array.

Mark 2-1/2" up Mark Module from bottom edge Intersections of downhill course

EcoX Gen2 Installation Guide, Rev 1.12 4 of 31 1. Layout Array on Rooftop (cont.)

1b. Snapping Chalk Lines and Marking Attachment Locations 1. Snap left/right chalk lines. Corners 2. Mark the attachment of Array Roof Structural Members Attachment Locations locations by locating the structural members of the roof. Refer to the EcoX Calculator for maximum allowable span and cantilever. Ensure that attachment locations meet and do not exceed, the EcoX design specifications on allowable spans and Make these cantilever distances. marks When marking the extra long attachment downhill. locations, make the See downhill leg of the mark long enough to be visible from the downhill edge of the Flashing when the Flashing is in its installed position. This mark will accelerate the Flashing installation by quick alignment of the Flashing to the mark.

Cantilever Span

EcoX Gen2 Installation Guide, Rev 1.12 5 of 31 2. Prepare the Modules - Before moving them to rooftop

2a. Wire Management: Position Leads, install Clips What follows is Use the EcoX Power Accessory Bracket basic information on to attach Microinverters or Optimizers. wiring an EcoX array. See Appendix E for installation details. Warning: All wiring Arrange leads for must be done in easy access. compliance with NEC Use a string map and AHJ requirements. to determine the It is advisable to direction that prepare Modules on the + and – leads will Use wire management ground before moving Clips to arrange wiring them to the rooftop. face for each row. This can be done as and keep away from penetrations are roof top, and/or installed. interfering with 1. Finalize the junction Clamps or Couplings. box location and Position and attach string diagram as soon as the array Microinverters design is marked on or Optimizers. the roof and Remove their provided confirmed. identification stickers 2. Once the EcoX bases are installed use the and place them on Junction Box Bracket the array map. to mount the Use a marker and label junction box. each unit for easy 3. Use the EcoX Power Accessory Bracket to to identification. mount microinverters or power optimizers to the modules. 4. Prepare modules on the ground for easy wiring on the roof. The maximum OCP rating is 20A when using an Enphase micro- inverter for grounding.

EcoX Gen2 Installation Guide, Rev 1.12 6 of 31 3. The Basics on Wire Management

3a. Suggested Routing and use of Clips Image shows an example wire layout to illustrate typical wire management.

Positive Home Run

Negative Home Run

EcoX Gen2 Installation Guide, Rev 1.12 7 of 31 4. Install Attachments to Roof

4a. Proper positioning of Flashing to Shingles Gap between Shingles When correctly completely covered Remove nails positioned the Flashing Incorrect: Do not leave by Flashing as needed for will prevent water a gap between Shingles clearance damage to roof from not completely covered water seepage and/or by Flashing freeze/thaw cycles. Best practice is to Trim notch in position the Flashing Flashing is shingle to mounting hole 2-1/2" aligned with clear Base up from the bottom downhill edge edge of the shingle of Shingle course. This places the 2-1/2" Flashing downhill edge Base flush with the edge of Incorrect: Do not allow the shingle course its Flashing to extend mounted on. below the downhill It is acceptable to shift a edge of Shingle Flashing uphill on its shingle course and to trim the uphill shingle to Positioned Incorrectly Positioned Correctly Acceptable Position clear the Base. (when necessary)

1a4b. Drill 3/16" pilot hole At the attachment 1a4c. Apply Caulk to Flashing Apply a horseshoe locations drill a 3/16" shaped generous bead piolt hole at a sufficient of caulking on the roof Drill 3/16" depth to fully secure the surface or the bottom of Pilot Hole Lag Screw and Flashing the Flashing with the to roof. Bottom opening downhill. Start Side of and end the bead near Prior to installing Flashing the Flashing’s downhill Attachment Flashing, apply caulk edge. Location in hole as an added sealant against moisture. Use roof compliant Horseshoe sealant. Seal any holes that shaped missed a rafter. Caulking Corner of Array

Downhill

EcoX Gen2 Installation Guide, Rev 1.12 8 of 31 4. Install Attachments onto Roof (cont.)

4d. Place Flashing If necessary, clearance 4e. Attach Base Be sure to orient the trim the up-course Lag Screw with Base as shown with its Shingles to clear the Sealing Washer offset mounting hole Slide Flashing Use Flat Roofing Bar Base. directed uphill. On the under uphill course Skirt row the Base can of Shingles to lift uphill Shingles Line up the Flashing’s mounting hole to pre- be rotated 180 degrees drilled pilot hole and which helps hide the square the Flashing to Base behind the Skirt the Shingles. Base (see examples below). Install the Base using The bottom or the Lag Screw with its downslope edge of pre-installed Sealing the Flashing must not Washer. Drive the Lag extend beyond the If needed, Screw into the roof course of Shingles that Notch shingles structure securing the Align with Pilot it’s attached to. to clear Base Base and Flashing to the Hole/Chalk Line roof top. Torque to 14 ft-lbs to ensure seal. Torque to: 14 ft-lbs

Base Positioning - Skirt Row vs other Rows

Base can be rotated 360 degrees to Skirt row Base Position Standard Base Position allow adjustability of Clamp position. It’s recommended to rotate the Base so its Offset mounting hole Rotates around its offset mounting hole. offset mounting hole is downhill. is uphill. This helps hide the Base behind the Skirt.

EcoX Gen2 Installation Guide, Rev 1.12 9 of 31 5. Install the Junction Box Bracket 5a. Attach Bracket to Base with Self Drilling Screws Base Bracket can be flipped for height adjustment Elevation of Bracket to Base can be Flanges Bracket anywhere within pointed this range upward Base

Bracket

Junction Box

The Junction Box Bracket is attached to the Base with Self Drilling Screws. Select one of the #14 x 1" Self Drilling Screw previously installed (3-places) Bases in a location suitable for mounting the Junction Box and install the Bracket as shown. Torque to: 10 ft-lbs

Universal Mounting Slots

The Junction Box can be secured to the Bracket with Self Drilling Screws or by utilizing the Universal Mounting Slots along with appropriate attaching hardware.

EcoX Gen2 Installation Guide, Rev 1.12 10 of 31 6. Install the Clamp Assemblies (if installing Skirt-Less version skip to Appendix G) 6a. How to Set the Clamp Assembly Height via the Glider Height settings are made by utilizing the 1" range of adjustment (1/4" increments) 5-position dovetailed between High & Low positions engagements of the Clamp Glider-to-Base. The Assembly image to the left shows (includes Glider) three of these positions. 1" range of travel is possible in 1/4" Glider increments. This equates to 1/8" variation from Glider to adjacent Glider Align Highest Align Middle Align Lowest to adjustment and setting Mark Dovetailed setting Mark setting Mark compensate for irregular of Glider to Engagements of Glider to of Glider to or undulating roof tops. top of Base top of Base top of Base change elevation Start by setting the in 1/4" increments Base Glider on the end-of- row Clamp Assemblies to their middle position and then adjust other Clamps along the row as Highest Position Middle Position Lowest Position needed to level the row. (start here)

6b. Install the Clamp Assemblies Align north edge Align Dovetail Long “Tongue” of Lower Clamp of Glider with marks Engagements and (shown in red) Start in Slide onto Base points uphill Middle provided on Base Base Position Clamp Assembly Alignment Glider Marks

Two vacant slots at Top

Two vacant Setting Marks: slots at Lowest Bottom Base Middle Glider Base Highest Note: For clarity the Upper and Lower Clamps are shown transparent.

EcoX Gen2 Installation Guide, Rev 1.12 11 of 31 6. Install Clamp Assemblies (cont.) 7. Level and Align Clamp Assemblies on Southern Row 6c. Engage Strut Nut with Base Use an impact driver to 7a. Run a E-W String Line Run String on A String Line is used to tighten the Strut Bolt uphill side of level and align Clamp Note: For Skirt row Clamp installation only. and engage the Strut Clamp Assembly Assemblies on the first Position String downhill row only. Nut channels with the on top groove Strut two flanges of the Base. of the two The body of the Glider Bolt Leave the Clamp open outermost left/right includes one “String Leaf to accept the Module. Groove” specifically Spring The Leaf Spring provides Clamp Assemblies designed to assist with pressure to keep the this process. Strut Nut engaged and Run and secure the in-position while the String Line between the installation continues. Align outermost two outermost left/right left/right Gliders Flanges Further tightening will Clamp Assemblies. Place be done as the Modules with Marks on String on the top String are installed. Bases Grooves, pulling it taught and securing its ends. Do not over tighten Strut Channels the Clamps on the Nut Skirt row. They need to be open enough to String accept the Skirts. All Base rotated; its offset Groove non-Skirt row Clamps mounting hole is downhill will be tightened as they to accommodate Skirt are installed.

EcoX Gen2 Installation Guide, Rev 1.12 12 of 31 7. Level and Align Clamp Assemblies (cont.) 7b. Level and Align to String Line Right Clamp Assembly

String Line

Left Clamp Assembly

Uphill/Downhill Adjustments

Problem: Solution: Gap too large Reduce gap by between String sliding Glider Line and Glider Toward String leaving a gap Height Adjustments Gap of 1/16" or less

String String Line Line

String Line

Problem: Top Groove String not aligned Groove with String Line (Top Groove) Solution: Raise Glider one Dovetail Engagement (1/4") Base to align Top Groove of Glider with String

EcoX Gen2 Installation Guide, Rev 1.12 13 of 31 8. Install Skirts on Downhill Row

8a. Skirt to Lower Clamp Positioning Skirts are held in place High Position by the Clamps and Low Position joined (end-to-end) by Upper Couplings. Clamp Skirt must Three Skirt types are Module Thickness Skirt must be installed available fitting the be installed Module in upper most common Module in lowest Inches Module position frame thickness (see Metric position table). The Skirt type is (approx) stamped on the inside face of Skirt. 32mm 1-1/2 Lower Skirt Clamp Skirts must be installed 33mm 1-5/16 in the correct dovetail engagement (Skirt-to- 35mm 1-3/8 Clamp) to match the Module in use. Once 40mm 1-5/8 installed, the Skirt sets the Upper Clamp 50mm 1-11/16 position matching it to 55mm 2 the Module thickness. 32, 33, 35 & 45mm Skirt Position 40 & 50mm Skirt Position

8b. Install the First Skirt Align the left/right position of the Skirt Tighten Strut Bolts enough with the outer edge of to hold Skirt in position - the array. Torque Align and mate leave Clamps open to accept Clamps to 14 ft-lbs. the appropriate Modules Check to ensure north engagements side of Clamp is positioned to accept Module. Torque to: 14 ft-lbs

Align this edge with outside edge of Module

32, 33, 35 & 45mm Skirt Position

EcoX Gen2 Installation Guide, Rev 1.12 14 of 31 8. Install Skirts on Downhill Row (cont.)

8c. Install Coupling and adjacent Skirt 2. Tighten one Bolt enough to hold Coupling in Just as with the Clamps, place. This leaves it open to accept next Skirt. the Skirts must be installed in the correct dovetail engagement to Coupling 1. Slide Coupling onto match the specific Upper previously installed Skirt Position Upper Module thickness. Clamp The Lower Clamp 5. Tighten second Bolt. provides two height Torque both Bolts to positions. The upper 14 ft-lbs. position is used on 40 & 50mm Modules while the lower position is Skirt used on 32, 33, 35 & Lower Position 45mm Modules. Torque to: 14 ft-lbs 40 & 50mm use upper position (shown) 4. Butt Skirt up 32, 33, 35 & 45mm use lower position against previously installed Skirt 3. Slide next-in-line Skirt into Coupling

8d. Left/Right Positioning of Coupling Left/Right positioning of the Couplings is flexible. Alignment Couplings can be Centered Coupling Attachment Indicators Offset Coupling adjusted “off-center” of presents the Skirt joint as needed an obstacle to work around an Attachment or other roof obstacle. If Coupling must be moved off-center, utilize its alignment indicators as guides and offset the Coupling no less than Skirt 1 Skirt 2 Skirt 1 Skirt 2 the 1" minimum allowable overlap. Do not offset the Skirt Joint 1" Minimum allowable Overlap Skirt Joint Coupling less than (Skirt joint to edge of Coupling) the minimum allowable 1" overlap. Doing so will Coupling centered over Skirt Joint is ideal Position Obstacle: Attachment requires Coupling to be offset cut the electrical bond of the array and reduce from center. Offset is acceptable but within limits structural integrity.

EcoX Gen2 Installation Guide, Rev 1.12 15 of 31 8. Install Skirts on Downhill Row (cont.)

8e. Working around Obstacles The example at far left Coupling cannot be Rotated Base properly positioned, demonstrates how a allows movement Coupling can now shift Clamp Assembly might it needs to shift about of Clamp Assembly Clamp Assembly 1/2" to the left into proper position become an obstacle to presents the Coupling. If a Clamp an obstacle Assembly obstructs the proper positioning, the Clamp Assembly position can be altered by simply rotating its Base via the Lag Screw. First, loosen the Lag Screw securing the Base Skirt 1 Skirt 2 to the roof, then rotate Skirt 1 Skirt 2 the Base and re-position the Clamp Assembly by 1" Minimum allowable Overlap Skirt Joint sliding the Glider as Coupling position does not meet Skirt Joint (Skirt joint to edge of Coupling) needed in order to the 1" minimum requirement properly place the Clamp Assembly in Solution: Rotate the Base and reposition relation to the Skirt. Problem: Clamp Assembly prevents proper the Clamp Assembly. (See the second positioning of Coupling Note: If this solution does not work see Appendix A example at left)

EcoX Gen2 Installation Guide, Rev 1.12 16 of 31 9. Install Modules

9a. Pivot Modules into Clamps & Couplings 1 Hold the module on its uphill edge, and place its downhill edge onto the Tongue of the Lower Clamps and module Coupling of the Skirt Row. 2 Pivot its uphill edge downward toward the Base/Lower Clamps 4 of the uphill row. Ensure that Module is 3 Rest the Module module starting positionfully seated in Clamp on the Base. Assembly and Coupling 4 Be certain that the 2 Module Frame has Pivot Module downward fully seated into/against the Clamps and Couplers while pushing it into the of the Skirt Row. Skirt Row Clamp Assembly

1 Place Module on tongues of the Lower Clamps and Coupling

3 Rest Module on uphill Base module resting position

View looking from left edge Uphill Base Skirt Row Base & Clamp Assembly

EcoX Gen2 Installation Guide, Rev 1.12 17 of 31 9. Install Modules (cont.)

9b. Continue installing Modules across Skirt Row Working across the Skirt row set the Modules in place while leaving a ½” gap between them. Set the gap by the alignment marks on the Skirt row Coupling(s) and aligning the Module frames to these marks. Wiring As each row of Modules is installed, complete all Skirt Row wiring connections and verify that all wire management clips and wires are properly arranged and off the rooftop before proceeding to the next 1/2" Gap row of Modules. Module Frame Install home runs Module Frame or trunk cable if necessary as each row of modules is installed.

Module Module Coupling Module Frame Alignment Marks

Skirt Skirt

EcoX Gen2 Installation Guide, Rev 1.12 18 of 31 9. Install Modules (cont.)

9c. Install the Uphill Clamps Slide the uphill Clamp Assemblies into place by sliding the Gliders toward the Module. Lift the uphill edge of the module as needed to slide the Clamps onto the Module, pressing Module them against the Module as shown at left. Leave the Clamp Gliders should be Assembly loose while set at the middle Glider Slide Gliders to set you position the height position Clamp Assemblies remaining Clamps and against the Module install the Couplings.

Base

9d. Install the Uphill Couplings After the Coupling has 1/2" Gap been positioned tighten and torque to 14 ft.-lbs. Torque to: 14 ft-lbs Module Module

Alignment Coupling Marks Tongue Tongue must be directed uphill Use Coupling alignment marks to center Coupling over the 1/2" gap. Coupling can be offset of center; the same procedures apply as identified in Step 9b Left/Right Positioning of Coupling

EcoX Gen2 Installation Guide, Rev 1.12 19 of 31 9. Install Modules (cont.)

9e. Coupling alignment on Modules with Non-Metallic Corners For Modules that are constructed with non-metallic corners, ensure the Bonding Clip in the Non-Metallic Coupling is fully engaged with the metallic frame Corners Module Module Module of the Module. When setting the Couplings position on Modules with non- metallic corners, the Couplings left/right range of adjustability is reduced Alignment Mark Alignment Mark due to the non-metallic Coupling places Bonding Clip Coupling places Bonding Clip area of influence. on the non-metallic on the metallic This area of influence varies by Module make portion of frame portion of frame and therefore a close Incomplete Bond Complete Bond visual inspection must be done to ensure that the Bonding Clip has Note: For clarity the Couplings are shown transparent. cleared these areas.

EcoX Gen2 Installation Guide, Rev 1.12 20 of 31 10. Level the Modules Level Modules Row-by-Row Leveling the Modules As work progresses the Modules will need to be evaluated by eye and leveled row-by-row. 1. From the roof, visually evaluate the rows for a consistent level left to right, uphill, downhill and to the row below. Ideally, get an evaluation from someone on the ground as well. Problem: 2. If elevation adjustments are required, raise or lower the Glider positions This Module is (as needed) on their respective Bases to bring things into level. lower than 3. After leveling, tighten the Clamps to 14 ft-lbs. the others and needs to Clamps have been evaluated and rated for multiple use. be elevated. Repeat Steps 9a through 9e for the remaining rows of Modules.

Torque to: 14 ft-lbs

Remember: Each dovetail engagement equals 1/4" elevation change Tighten and Torque to 14 ft-lbs

Solution: Remove Glider and raise it one Dovetail Engagement. Evaluate for level and readjust if needed.

Highest Position Middle Position Lowest Position

EcoX Gen2 Installation Guide, Rev 1.12 21 of 31 11. Grounding and Bonding

Adding uphill Bonding Clips Connect Row-to-Row Now that the system is installed, its time to add = Requires uphill Bonding Clip, in this example three additional Bonding Clips Bonding Clips are required; one for each of the 3-rows (referred to as "uphill Bonding Clips") to bond the = Factory installed Bonding Clips system row-to-row. Row to row bonding NOTE: Uphill must be completed in Bonding Clips one location at the end of not required on every row. This must be the last uphill done between the skirt and row of Clamps the first row of modules, and between every row of modules. The image at left Clamps and Couplings create shows the general location continuously bonded rows of row to row bonding within left and right an array. Install uphill There are two options for Bonding Clip to row to row bonding: bond Modules row to row Option 1 uses a bonding clip, added on the uphill side of any one clamp in each row. Adding uphill Bonding Option 2 is any bonding Clips completes jumper that is tested to row-to-row bonding UL2703 (see the following page for details). Install uphill Bonding Clip to Option 1 cannot be used bond Modules with 32mm Module row to row frames. For all 32mm Modules, use Option 2 for row to row bonding.

Install uphill Bonding Clip to bond Skirt row to first row of Modules

On Skirt row, the Skirts create continuously bonded row left and right

Note: Although the uphill Bonding Clips are shown on the right end of the rows, they can be installed on either end of each row.

EcoX Gen2 Installation Guide, Rev 1.12 22 of 31 11. Grounding and Bonding (cont.) Option 1: Use our Bonding Clips

Module-to-Module Torque Clamp to 14 ft-lbs Slide Row to Row Row to Row Bonding Clip Bonding clip onto uphill side of the Upper Clamp Module Module Factory Row to Row installed Bonding Clip Bonding Clip

Slide Row to Row Bonding clip onto uphill side of the Upper Clamp Torque Clamp Skirt-to-Module to 14 ft-lbs Skirt Row to Row Bonding Clip Slide Row to Row Bonding clip onto uphill side of the Upper Clamp Module

Factory installed Bonding Clip

Torque to: 14 ft-lbs

EcoX Gen2 Installation Guide, Rev 1.12 23 of 31 11. Grounding and Bonding (cont.) Option 2: Use a Bonding Jumper: Module-to-Module

Specialized bonding clips clip onto the underside flange of Module frame

Bonding Jumper bonds Underside Flange Module-to-Module

Note: Bonding Jumpers are single-use only.

Option 2: Use a Bonding Jumper: Skirt-to-Module

Underside Flang

Bonding Jumper bonds Skirt-to-Module

Note: Bonding Jumpers are single-use only.

EcoX Gen2 Installation Guide, Rev 1.12 24 of 31 11. Grounding and Bonding (cont.)

Lugs and System Bonding Install a single ground lug on each array in a visible Module location. Each ground lug is to be grounded to the (any location approved by common ground identified the module manufacturer) for this system in accordance with the National Electric Code, ANSI/NFPA 70. l Wiley WEEB-LUG-6.7 l Ilsco Lay-in Lug GBL-4DBT l Burndy CL50-1TN Other UL 2703 listed ground lugs may also be suitable for this system if approved by the Authority Having Jurisdiction (AHJ). Site specific plans are to identify grounding conductor size, type and temperature Base rating (if appropriate) as determined by a qualified (any flat, accessible engineer and approved by surface with clearance the AHJ. for a torque wrench) The installer is responsible for ensuring the ground connection is properly installed per NEC requirements, including the gage of the EGC wire to be used. The installer is also Skirt responsible for obtaining (any flat, accessible prior approval from the AHJ Ground Lug surface with clearance for the use of any grounding for a torque wrench) lug not listed above. Ensure that bare copper wire is isolated from all aluminum components. One ground lug per array must be installed. Ground lug can be installed on the module frame at the end of the l Install approved grounding lug per array or on the EcoX Skirt or Base components as lug manufacturer’s instructions. indicated in the drawing above and approved by the AHJ. Instructions included in the following pages. l Deburr any field-drilled holes. l Wiley WEEB Lugs are “single use only“.

EcoX Gen2 Installation Guide, Rev 1.12 25 of 31 11. Grounding and Bonding (cont.)

EcoX Gen2 Installation Guide, Rev 1.12 26 of 31 11. Grounding and Bonding (cont.)

EcoX Gen2 Installation Guide, Rev 1.12 27 of 31 11. Grounding and Bonding (cont.)

EcoX Gen2 Installation Guide, Rev 1.12 28 of 31 11. Grounding and Bonding (cont.)

System Bonding Overview 1 Skirt row continuous bond: Continuous bond from Base and Clamp to Skirt. Couplings bond Skirt to Coupling Skirt. Complete row of 2 Skirts and EcoX 3 components clamped to Skirt are bonded. 2 Module row continuous bond: Continuous bond from Flashing through Clamp to Module. Couplings bond Module-to-Module. 2 Coupling Complete row of 3 Modules and EcoX components clamped to Modules are bonded. 3 Row to row bonding: Bond Clip added to uphill side of one Clamp per row. This bonds Skirt row to Modules on downhill row, and Module row to next Module row on each subsequent row. 1 Clamp 3

Skirt

Base Flashing

EcoX Gen2 Installation Guide, Rev 1.12 29 of 31 11. Grounding and Bonding (cont.) Component Connections Clamp The following outlines bond connection Base Assembly Clamp mechanisms between Components: Assembly

Clamp Assembly to Base: The Clamp Assembly slides onto the Base. The Strut Nut (highlighted in yellow) has teeth that embed in the Base. Base Strut Nut Strut Nut

Clamp to Skirt: Bonding The Clamp features an integrated Bonding Clamp Clip Clip. This Clip bites onto the Skirt on the Skirt downhill row. Skirt

Coupling Bonds Skirt to Skirt: Bonding The Coupling features two integrated Bond Clips Clips. These clips bond each Skirt to the Bonding neighboring Skirt. Coupling Coupling Clips

Skirt 2 Skirt

Skirt 1

EcoX Gen2 Installation Guide, Rev 1.12 30 of 31 11. Grounding and Bonding (cont.) Component Connections (cont.)

Clamp to Module: Bond Row to Row: The Clamp features an integrated Bonding Additional bonding must be added Clip. The Clamp bonds to the Module to bond the Skirt row to the first downhill from the Clamp. row of Modules, and to bond each row of Modules together. There are Clamp Integrated two options to accomplish this, Assembly Bonding Clip they are as follows:

Module

Option 1: Add a Bond Clip to the uphill side of each Clamp.

Coupling Bonds Module to Module: Install Bonding Clip Module The Coupling features two integrated onto Upper Clamp. Module Module or Bonding Clips. On module rows, the Skirt Coupling bonds each Module to the neighboring Module. The Coupling is not approved for bonding row-to-row. Integrated Bonding Clips

Coupling Module 2 Option 2: Use an approved bonding jumper. A jumper is required between the Skirt and the first row of Modules, and between every row of Modules. Either side of the Module 1 array is acceptable. Bonding Jumper bonds Module-to-Module and/or Skirt to Module

EcoX Gen2 Installation Guide, Rev 1.12 31 of 31 Appendix A: How to replace the Clamp Assembly with a Coupling

A1. Disassemble Clamp Assembly and Rebuild using a Coupling This procedure is used only in those situations wherein This situation requires a Coupling: Swap Clamp Assembly for Coupling: adjusting Attachments When a Rafter falls where two Modules meet, the Clamp Disassemble and reassemble with Coupling. Reuse Strut Bolt, (Step 8e), fails to resolve interference issues Assembly must be removed and replaced with a Coupling. Glider, O-ring and Strut Nut between an Attachment and a Coupling. A common example of this Strut Bolt is shown at left when a rafter falls where two modules meet. Rafter happens Attachment to fall where two mounted to rafter. Remove the Glider and Modules meet Clamp Assembly Clamp assembly from must be replaced the Base. Next, remove the Upper and Lower with Coupling Clamps from the Glider by removing the Strut Bolt and Strut Nut. Position the Coupling onto the Glider and re- install the Strut Bolt and Module Module Strut Nut. Return the Glider to its original position on the Base. Align the Glider and Coupling to the Modules as described in sections Coupling 8, 9, and A-2. Tighten and torque the Strut Bolt and Coupling Clamp Skirt Skirt to 14 ft-lbs. To ensure proper electrical bonding install the modified Coupling within the allowable left/right limits. The following page demonstrates the maximum allowable range of positions between the Coupling Glider and Module Frame(s). Use the Alignment Marks and align to the Module Frame. Any less Clamp Assembly O-ring overlap inhibits proper bonding and may not properly support Strut Nut components.

EcoX Gen2 Installation Guide, Rev 1.12 A-1 Appendix A: How to replace the Clamp Assembly with a Coupling (cont.)

A2. Utilizing the Alignment Marks for Proper alignment of Coupling to Modules and Skirts Just as in earlier steps, the Coupling must be properly aligned in order for bonding to occur and also to Alignment Mark properly support the not aligned with Modules and/or skirts. Module Frame Module Module Module Frame For Modules that Alignment Marks are constructed with non-metallic corners, ensure the Bonding Clip in the Coupling is fully engaged with the metallic frame of the Module as shown Skirt Skirt in step 9-e. If the Coupling is Range Range not within the acceptable range of positioning the Bonding Acceptable Range of Positioning Incorrect Clips (within its Upper Coupling has a maximum allowable range of positioning Coupling position exceeds the allowable range. Alignment Mark is Clamp) will fail to make and must not exceed this range. not in-line with Module Frame. Inadequate Module and Skirt proper contact with the Using Alignment Marks keeps the range in check. support. Bonding will be inhibited. Modules and/or Skirts. Correct positioning to the Alignment Marks ensures the Bonding Clips are making contact with the Modules Alignment Mark Alignment Mark and/or Skirts concluding aligned with aligned with in a proper bond. Module Frame Module Frame Module Frame Module Frame When replacing a Clamp Assembly with a Coupling verify that the left/right positioning of the Coupling will fall within the acceptable range of positioning as shown to the left. Remember, after the Coupling is installed it is in a fixed left/right Range Range position and cannot be adjusted because it is secured to the Glider Outermost Positioning - Scenario One Outermost Positioning - Scenario Two and Base attachment to the rooftop. Alignment Marks properly aligned with Module Frame Alignment Marks properly aligned with Module Frame

EcoX Gen2 Installation Guide, Rev 1.12 A-2 Appendix B: Thermal Expansion

With natural ambient temperature fluctuations, thermal expansion and contraction can impact large arrays. To prevent excessive thermal movement in an array, thermal breaks should be installed for arrays longer than 35 ft. If the total left/right dimension of an array exceeds 35 ft., break array as shown to accommodate thermal expansion and contraction. Ensure each sub-array's left/right length “L” do not exceed 35 ft. Add Clamps as necessary to support PV modules on each side of the thermal break without exceeding the allowable cantilever specified in the project specific engineering calculations. The leftt/right gap between sub-arrays should be set to a minimum of ½”. Note that the gap shown at left is much greater than ½” for demonstration purposes. Use a bonding jumper to bond the two sub- arrays together. Alternatively, connect a separate Equipment Grounding Conductor (EGC) to a single point on each sub-array.

EcoX Gen2 Installation Guide, Rev 1.12 B-1 Appendix C: Service and Maintenance Follow these procedures to ensure extended safety and performance. Ecolibrium recommends periodic re-inspection of the installation for loose components, loose fasteners, and any corrosion, such that if found, the affected components are to be immediately replaced. If module removal is required, it is the installers responsibility to ensure the ground path is maintained when the module is #6 CU Conductor removed. One of two bonding options may be utilized: Option 1 (for use on a single row array): A. Install an approved ground lug on adjacent modules. l Wiley WEEB-LUG-6.7 l Ilsco Lay-in Lug GBL- 4DBT l Burndy CL50-1TN Other UL 2703 listed, outdoor rated (by others) ground lugs may also be suitable for this system if approved by the AHJ (Authority Having Jurisdiction). Install ground lug on #6 CU Conductor both of the modules Ground Lug Ground Lug adjacent to the module to be removed. Use the grounding hole on the frame of the module. See section 10 for additional ground lug information. B. Connect a Bonding Jumper. l Install approved grounding lug per Lay a bare #6 CU conductor (by others) lug manufacturers instructions. See into the two lay in lugs Section 10. Underside of connected to the adjacent modules. l Module Deburr any field-drilled holes. Option 2 (for use on a l Wiley WEEB Lugs are “single use multiple row array): Install a row to row only“. bonding on either end of the row.

EcoX Gen2 Installation Guide, Rev 1.12 C-1 Appendix D: Modules Evaluated as part of EcoX UL 2703 Certification EcoX is rated to be installed with the following Modules according to the approval list

Note: "XXX" represents module wattage

Downforce Uplift Downslope Downforce Uplift Downslope Manufacturer Module Series Design Load Design Load Design Load Manufacturer Module Series Design Load Design Load Design Load BVM6610P-XXX JKMXXXM-48 Boviet Solar BVM6610M-XXX JKMXXXM-60 40 psf 40 psf 23.3 psf JKMXXXM-60B Technologies BVM6610M(BB)-XXX JKMXXXM-60-V BVM6610P(BB)-XXX JKMXXXPP-60 CS6P-XXXM JKMXXXPP-60(Plus) Canadian Solar 40 psf 40 psf 23.3 psf JKMXXXPP-60-J4 CS6P-XXXP 40 psf 30 psf 23.3 psf Jinko JKMXXXPP-60-V Centrosolar BM60-XXX BB 40 psf 40 psf 23.3 psf JKMSXXXPP-60 CTXXXMxx-01 JKMXXXPP-72 CertainTeed 40 psf 40 psf 23.3 psf CTXXXMxx-02 JKMXXXM-72(Plus) JKMXXXM-72 Flex FLV-MA-XXXP60AB 40 psf 30 psf 23.3 psf JKMXXXPP-72(Plus) HSXXXTD-AN4 JKMXXXPP-72-V Hansol 40 psf 30 psf 23.3 psf HSXXXTD-AN3 LGXXXE1C-A5 HSXXXUD-AN1 LGXXXN1K-A5 LGXXXN1C-A5 Q.PEAK-G3 40 psf 30 psf 23.3 psf Q.PEAK-G4 LGXXXN2W-A5 Q.PEAK-G4.1 LGXXXQ1C-A5 Q.PEAK BLK-G4 LGXXXS1C-A5 Q.PEAK BLK-G4.1 LGXXXS2W-A5 Q.PLUS-BFR-G4.1 LGXXXA1C-G4 Q.PEAK DUO-G5 LG Electronics LGXXXN1C-G4 Hanwha/Q-Cells 40 psf 40 psf 23.3 psf Q.PEAK DUO BLK-G5 LGXXXN1K-G4 40 psf 40 psf 23.3 psf Q.PLUS-G3 LGXXXS1C-G4 Q.PLUS-G4 LGXXXS1K-G4 Q.PRO-G3 LGXXXN1C-B3 Q.PRO-G4 LGXXXS1K-B3 Q.PRO-BFR-G3 LGXXXS1C-B3 30 psf 30 psf 23.3 psf Q.PRO-BFR-G4 LGXXXA1C-B3 HiS-MXXXMG LR6-60-XXXM HiS-MXXXRG Hyundai 40 psf 40 psf 23.3 psf LR6-60BK-XXXM HiS-MXXXRW Longi LR6-60PB-XXXM 40 psf 30 psf 23.3 psf HiS-SXXXRG LR6-60PE-XXXM LR6-60PH-XXXM VBHNXXXSA17 40 psf 30 psf 23.3 psf Panasonic VBHNXXXKA03 (continued)

EcoX Gen2 Installation Guide, Rev 1.12 D-1 Appendix D: Modules Evaluated as part of EcoX UL 2703 Certification (cont.) EcoX is rated to be installed with the following Modules according to the approval list

Note: "XXX" represents module wattage

Downforce Uplift Downslope Downforce Uplift Downslope Manufacturer Module Series Design Load Design Load Design Load Manufacturer Module Series Design Load Design Load Design Load

RECXXXPE Sunmodule RECXXXPE BLK SW-XXX RECXXXTP SolarWorld Pro-SW-XXX-Poly 40 psf 40 psf 23.3 psf REC RECXXXTP BLK 40 psf 30 psf 23.3 psf Plus-SW-XXX-Mono RECXXXTP2 Plus-SW-XXX-Mono-Black RECXXXTP2 BLK OPTXXX-60-4-100 Suniva 40 psf 40 psf 23.3 psf RECXXXTP2 BLK2 OPTXXX-60-4-1B0 SLG-M XXX SunEdison SE-F2XXyyy-zz 40 psf 40 psf 23.3 psf SLG-P XXX TSM-DD05A.05(II) SLG-X XXX TSM-DD05A.08(II) SSG-M XXX TSM-DD05A.0X SSG-P XXX 40 psf 40 psf 23.3 psf Silfab 30.5 psf 30 psf 23.3 psf TSM-PX05.XX SLA-M XXX TSM-XXXPA05 Trina SLA-P XXX TSM-XXXPD05 SLA-X XXX TSM-XXXDD14A(II) SSA-P XXX TSM-XXXDE14A(II) 40 psf 38.6 psf 23.3 psf SSA-M XXX TSM-XXXPD14 SNXXXM-10 TSM-XXXPE14A SNXXXP-10 Winaico WSP-XXXM6 40 psf 40 psf 23.3 psf S-Energy SNXXXP-15 30 psf 30 psf 23.3 psf YLXXXP-29b SNXXXM-10 (40T) Yingli 40 psf 40 psf 23.3 psf SNXXXP-10 (40T) YLXXXP-30b

Solaria PowerXT-XXXR-BX 40 psf 40 psf 23.3 psf PowerXT-XXXR-PX

EcoX Gen2 Installation Guide, Rev 1.12 D-2 Appendix E: Power Accessory Bracket Installation

Ecolibrium Solar Power Accessory Bracket The Ecolibrium Solar Power Dimension X Accessory Bracket is tested to meet the UL2703 standards for grounding and bonding, and is compatible with any UL2703 solar racking system. Dimension X In addition, the Power Accessory Bracket provides an adequate system ground path through power accessories with integrated grounding systems. The Power Accessory Bracket Power Accessory Bracket is easily installed, and provides a secure, UL2703 P/N ES10072 approved bonded connection when installed according to the following criteria: l The center of the bracket (installation bolt) must be placed within 12 in. of the corner of the PV module, as shown in Figure 1 (power accessory unit may be installed on short edge of PV module as well as on long edge as shown) l The bracket must be fully inserted onto the return flange of the PV module Figure 1: Dimension “X“ ≤12 inches (See Figure 2) l The power accessory unit must face downward as PV Module Fully insert Bracket shown in Figure 2 Frame onto Module flange l The connection bolt must be tightened to a torque value of 14 ft-lbs as shown Power Accessory Bracket in Figure 2 Additionally, when the Power Accessory Bracket is used to install an Enphase unit with integrated grounding, the Connection Bolt connection provides a UL2703 certified system Torque 14 Ft-lbs ground path with a Power Accessory Unit maximum OCP rating of 20 A. (face downward as shown) (For more information, Torque Spec: 14 ft-lbs please contact the Ecolibrium Solar sales team at 1-720- Figure 2: Power Accessory Bracket Installation 249-1877)

EcoX Gen2 Installation Guide, Rev 1.12 E-1 Appendix F: Installing the Skirt-Less Clamp Assemblies 1a. How to Set the Clamp Assembly Height via the Glider Height settings are made by utilizing the 5-position dovetailed engagements of the Clamp 1" range of adjustment (1/4" increments) Glider-to-Base. The Assembly between High & Low positions image to the left shows (includes Glider) three of these positions. 1" range of travel is possible in 1/4" Glider increments. This equates to 1/8" variation from Glider to adjacent Glider Align Highest Align Middle Align Lowest to adjustment and setting Mark Dovetailed setting Mark setting Mark compensate for irregular of Glider to Engagements of Glider to of Glider to or undulating roof tops. top of Base top of Base top of Base change elevation Start by setting the in 1/4" increments Base Glider on the end-of- row Clamps to their middle position and then adjust other Clamps along the row as Highest Position Middle Position Lowest Position needed to level the row. (start here)

1b. Install the Clamp Assemblies Set Glider at Uphill edge Acceptable range Approx. of Glider for uphill edge Align Dovetail 1 inch of Glider. Engagements and Start in Slide onto Base Middle Base Position Clamp Assembly Glider Alignment Base Marks Glider Two vacant slots at Top Glider

Two vacant Setting Marks: slots at Lowest Bottom Base Middle Highest This Glider is aligned outside of the acceptable range and must be repositioned.

EcoX Gen2 Installation Guide, Rev 1.12 F-1 App. F: Install the Skirt-Less Clamp Assemblies (cont.) App. F: Level and Align the Skirt-Less Clamp Assemblies

1c. Engage Strut Nut with Base Use an impact driver to 2a. Run a E-W String Line Run String on A String Line is used to tighten the Strut Bolt uphill side of level and align Clamp and engage the Strut Assemblies on the first Position String Clamp Assembly downhill row only. Nut channels with the on top groove two flanges of the Base. of the two The body of the Glider Leave the Clamp open includes one “String to accept the Module. outermost left/right Clamp Assemblies Groove” specifically Further tightening will designed to assist with be done as the Modules this process. Strut Bolt are installed. Run and secure the String Line between the Flanges two outermost left/right Clamp Assemblies. Place String on the top String Grooves, pulling it taught Strut and securing its ends. Nut Channels Torque to: 14 ft-lbs String Groove

EcoX Gen2 Installation Guide, Rev 1.12 F-2 Appendix F: Level and Align Clamp Assemblies (cont.) 2b. Level and Align to String Line Right Clamp Assembly

String Line

Left Clamp Assembly

Uphill/Downhill Adjustments

Problem: Solution: Gap too large Reduce gap by between String sliding Glider Line and Glider Toward String leaving a gap Height Adjustments Gap of 1/16" or less String String Line Line Glider Glider String Line

Problem: Base Base Top Groove String not aligned Groove with String Line (Top Groove) Solution: Raise Glider one Dovetail Engagement (1/4") Base to align Top Groove of Glider with String

EcoX Gen2 Installation Guide, Rev 1.12 F-3 Appendix F: Install Modules 3a. Pivot Modules into Clamps & Couplings 1 Hold the module on its uphill edge, and place its downhill edge onto Gliders. 2 Pivot uphill edge module downward toward the uphill Base. 3 Rest the Module 4 on the Base. 4 Be certain that the Ensure that Module is Module Frame has module starting positionfully seated in Clamp fully seated into/against 2 Assembly and Coupling the Clamps. Pivot Module downward while pushing it into the Clamp Assembly

1 Place Module on Gliders

3 Rest Module on uphill Base module resting position

View looking from left edge Uphill Base Clamp Assembly

EcoX Gen2 Installation Guide, Rev 1.12 F-4 Appendix F: Install Modules (cont.) 3b. Continue installing Modules across row Working across the row set the Modules in place while leaving a ½” gap between them. Set the gap by the alignment marks on the Coupling(s) and aligning the Module frames to these marks. Wiring As each row of Modules is installed, complete all wiring connections and verify that all wire management clips and wires are properly arranged and off the rooftop before proceeding to the next row of Modules. Install home runs or trunk cable if necessary as each row 1/2" Gap of modules is installed. Module Frame Module Frame

Module Module

Module Frame Coupling Alignment Marks

Note: See following step on installing the Coupling.

EcoX Gen2 Installation Guide, Rev 1.12 F-5 Appendix F: Install Modules (cont.) 3c. Installing the Coupling Install Coupling as shown utilizing its alignment marks to set Module Frame the gap of the Modules. Alignment Marks Tighten the two bolts and torque to 14 ft-lbs. After installing the Couplings return to step 9c and continue the Torque 14 ft-lbs installation process. (2-places) Torque to: 14 ft-lbs

Coupling

Install Coupling with this step butted against the Modules

EcoX Gen2 Installation Guide, Rev 1.12 F-6 Appendix G: Installing EcoX on a Membrane Roof Installing EcoX using Commercial Membrane Roof Attachments Plan out the array on the roof and mark the location of each clamp 2. Install attachment flashings according to the using a chalk line or 1. Determine attachment locations: manufacturer’s requirements: other appropriate Plan out the array on the roof and mark the location of Install each attachment with the mounting stud centered method. Install each each clamp using a chalk line or other appropriate method. on the locating mark from step 1. attachment with the mounting stud centered on the locating mark from step 1. Place the mounting hole of the Flat Roof Base (ES10274) over the mounting stud and secure with the included Serrated Flange Nut. Tighten the nut to 14 ft-lbs. Follow the instructions starting with section 6 on page 11 to complete the assembly. Torque to: 14 ft-lbs

Consult the manufacturer of the attachment flashing in 3. Install the Flat Roof Base to the mounting stud: use to obtain proper Place the mounting hole of the Flat Roof Base (ES10274) 4. Install modules and other components: installation instructions. over the mounting stud and secure with the included Follow the instructions starting with section 6 on page 11 Serrated Flange Nut. Tighten the nut to 14 ft-lbs. to complete the assembly.

EcoX Gen2 Installation Guide, Rev 1.12 G-1