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Summary of Contents for UNIRAC EcoFoot5DTM
- Page 1 INSTALLATION GUIDE HIGH DENSITY 5-DEGREE BALLAST RACKING SYSTEM UNIRAC Code-Compliant Installation Manual © 2020 by Unirac, Inc. All rights reserved. UNIRAC welcomes input concerning the accuracy and user-friendliness of this publication. Please write to publications@unirac.com. PUB2020OCT31...
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Page 2: Table Of Contents
INSTALLATION GUIDE HIGH DENSITY 5-DEGREE BALLAST RACKING SYSTEM TABLE OF CONTENTS INTRODUCTION ............1-2 WARNINGS AND SAFETY . - Page 3 INSTALLATION GUIDE HIGH DENSITY 5-DEGREE BALLAST RACKING SYSTEM Legal Notices ©2017 Unirac®, Inc. Unirac® and EcoFoot2+® are registered trademarks of Unirac, Inc. EcoFoot5D™ is a trademark of Unirac, Inc., registration pending.
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Page 4: Introduction
INTRODUCTION EcoFoot5DTM is a 5-degree ballasted racking system designed to fi t more modules on a roof, maximizing power density. The modular de- sign is built on the proven, industry-preferred, beautifully simple and fast-to-install modular technology of the EcoFoot platform and sister product, EcoFoot2+. - Page 5 Unirac assumes no responsibility for any infringement of patents or other rights of third parties, which may result from use of modules. No license is granted by implication or under any patent or patent rights. The information in this manual is believed to be reliable, but does not constitute an expressed and/or implied warranty.
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Page 6: Warnings And Safety
EcoFoot5D. Failure to follow the methods and procedures outlined in this guide may result in injury and/or damage to property. Carefully read this guide before starting any work. Store a copy of this guide on the job site at all times and contact Unirac with any in- stallation questions related to EcoFoot5D. -
Page 7: General Application Notes
BALLAST RACKING SYSTEM ECOFOOT5D GENERAL APPLICATION NOTES Site-Specifi c System Design: Unirac provides drafting services on all EcoFoot5D projects. This service produces a site-specifi c design pack- age with an Engineered Stamped Layout including detailed ballast plan and bill of materials. - Page 8 Type 3 PV models with an OEM factory-attached PV metal frame, Type 19, Type 22, and Type 25. Type 29 and Type 30 modules whose encapsulation thickness matches the criteria for Type 3 modules are also an approved fi re types. Contact Unirac with any questions about fi...
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Page 9: System Components
SYSTEM COMPONENTS HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM EcoFoot5D Base Universal Clamp Lower Universal Clamp Upper Universal Clamp Upper Hardware Required All required hardware is included. Tools Required ½” Deep Socket Calibrated Torque Wrench Torque Settings Clevis Pins Wind Defl... - Page 10 SYSTEM COMPONENTS HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM S.NO. DESCRIPTION PART NUMBER EcoFoot5D Base ES10490 Universal Clamp Lower ES10459 Universal Clamp Upper ES10458 Clevis Pins ES10476-CP 70" ES10494 Wind Defl ector 82" ES10496 92.25" ES11026 71" ES10486 Ballast Tray 83"...
- Page 11 SYSTEM INSTALLATION STEPS HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM Step 1 – Install Pre-assembled Universal Clamps into Bases Step 2 – Position Array • Place Lower and Upper Universal Clamp into EcoFoot5D Base as shown. • Snap two chalk lines on roof denoting outside edges of the EcoFoot5D •...
- Page 12 SYSTEM INSTALLATION STEPS HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM Step 3 – Secure PV Modules onto Bases • Place PV module onto EcoFoot5D Base. • Space modules ½” apart using alignment marks located on the Clamps. Torque Nuts to 14 ft-lbs using a 1/2" deep socket. Installation Tips •...
- Page 13 SYSTEM INSTALLATION STEPS HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM Step 5 – Install Ballast Tray and place ballast blocks on Tray Step 6 – Install Wind Defl ector • Slide tray into retention clips located on the Base by sliding the Tray Place Wind Defl...
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Page 14: System Installation Steps
SYSTEM INSTALLATION STEPS HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM METHODS OF NORTH ROW INSTALLATION The north row of EcoFoot5D arrays can be installed with Bases tucked under the modules using either of the methods described here. METHOD A: EcoFoot2+ BASES AND WIND DEFLECTORS EcoFoot2+ Bases can be tucked under the north edge of EcoFoot5D arrays as shown in the diagram. - Page 15 SYSTEM INSTALLATION STEPS HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM Method B: EcoFoot5D Bases Attached EcoFoot5D Bases can be tucked under the north edge of the north row and connected to anchored Strut. Strut runs East/West. See diagram below. •...
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Page 16: Stepped Array Installation
STEPPED ARRAY INSTALLATION HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM INSTALLATION OF CLAMPS FOR STEPPED ARRAY In solar arrays, at the outer edge of the array often a single Base is clamped to two PV modules on one row and a single PV module on the opposite row, creating a stepped edge. - Page 17 STEPPED ARRAY INSTALLATION HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM CLAMPING TO SECURE SINGLE MODULE OF STEPPED ARRAY • Position module to align with positioning dot at outer edge of Clamp. This will engage 1 ¾" of Clamp with module frame. Align Base as needed to position Clamp.
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Page 18: Module Removal
MODULE REMOVAL HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM MODULE REMOVAL CAUTION • Module removal may disrupt the bonding path and could introduce the risk of electric shock. • See Grounding and Bonding Paths section to determine when module removal may disrupt the bonding path. •... -
Page 19: Roof Attachment With Strut
ROOF ATTACHMENT WITH STRUT HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM INSTALLATION OF ROOF ATTACHMENT WITH STRUT TOOLS REQUIRED 1. 1/2" Deep Socket 2. 9/16" Deep Socket 3. 1/2" Box End Wrench 4. Calibrated Torque Wrench 5. Power Drill with 3/8" Drill Bit Torque fasteners to 14 ft-lbs. - Page 20 ROOF ATTACHMENT WITH STRUT HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM ATTACHMENT WITH STRUT Strut runs North/South under PV modules, near the center of the module, placed as indicated on array layout. Strut does not connect to EcoFoot2 Bases. Strut is attached to Roof Attachment, low or south edge of PV modules and Wind Defl...
- Page 21 ROOF ATTACHMENT WITH STRUT HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM STEP 4: STEP 5: STEP 6: Place Roof Attachment within 1.5”- 4” from Slide Strut away and install Roof Attachment per Slide Strut back into position over Roof Attachment. attachment-side edge of Strut, illustrated by Red manufacturer’s instructions.
- Page 22 ROOF ATTACHMENT WITH STRUT HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM STEP 10: STEP 11: Using Strut Strap Components shown, attach North Place Bolt behind Wind Defl ector and bottom of Strut Strap in Strut channel. row Strut Strap to Wind Defl ector and Strut. Torque Bolt to 14 ft-lbs.
- Page 23 ROOF ATTACHMENT WITH STRUT HIGH DENSITY 5-DEGREE INSTALLATION GUIDE PAGE BALLAST RACKING SYSTEM NOTE: When using U-Anchor Roof Attachment, the short side of L-Bracket 2 butts to the short side of L-Bracket 1, as shown in step 14. If you are using OMG Roof Attachment, see guidelines below for correct installation of L-Bracket 2.
- Page 24 2. Note that EcoFoot5D ballast trays will not be installed where strut is located. FIELD SUPPORT CONTACT INFORMATION UNIRAC proudly offers dedicated engineering expertise and superior customer support. For questions about the installation procedures or a specifi c application, please visit our website: www.unirac.com.
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Page 25: Grounding And Bonding
Wind Defl ector, or by drilling a ¼” ground hole into the Wind Defl ector a minimum of ½” from any edge. One Ground Lug is required for every 400 modules connected within an array. Unirac recommends using #6 copper ground wire in conjunction with WEEB grounding devices such as the WEEB-LUG-6.7 or WEEB DSK516. Lugs are a single use components. -
Page 26: Code Compliance Notes
CODE COMPLIANCE NOTES HIGH DENSITY 5-DEGREE SYSTEM CERTIFICATION PAGE BALLAST RACKING SYSTEM UL2703 System Label: The label shown below is stamped into to the Wind Defl ector (identifi ed as component 5 in the installation guide). ###X MM/YYYY The Date Code ###X MM/YYYY shown above will appear on production parts, defi ned as follows: •... -
Page 27: Mechanical Load Test
Ecofoot5D load rating. Please consult the PV module manufacturer's installation guide for more information. In addition to UL 2703 certifi cation, Unirac performs internal testing beyond the requirements of certifi cation tests in order to establish system functional limits, allowable loads, and factors of safety. - Page 28 MECHANICAL LOAD TEST HIGH DENSITY 5-DEGREE SYSTEM CERTIFICATION PAGE BALLAST RACKING SYSTEM Module Model / Series Area [sq ft] Design Load [psf] Manufacturer JKMXXXP-60 17.62 15 up / 45 down Jinko JKMXXXP-72 20.89 13.4 up / 42.9 down LGXXXN2W-G4 21.10 13.3 up / 40 down LGXXXN2W-A5 22.31...
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Page 29: Compatible Modules
COMPATIBLE MODULES HIGH DENSITY 5-DEGREE SYSTEM CERTIFICATION PAGE BALLAST RACKING SYSTEM Electrical Bonding and Grounding Test Modules The list below is not exhaustive of compliant modules but shows those that have been evaluated and found to be electrically compatible with the EcoFoot2+ system.
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