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Summary of Contents for UNIRAC GRIDFLEX 5
- Page 1 INSTALLATION GUIDE UNIRAC Code-Compliant Installation Manual © 2022 by Unirac, Inc. All rights reserved. UNIRAC welcomes input concerning the accuracy and user-friendliness of this publication. Please write to publications@unirac.com. PUB2024AUG23...
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Page 2: Table Of Contents
INSTALLATION GUIDE TABLE OF CONTENTS TOOLS & SPECIFICATIONS .......1 SYSTEM COMPONENTS ........2-3 INSTALLATION STEPS . -
Page 3: Tools & Specifications
TOOLS AND SPECIFICATIONS TECHNICAL DATA SHEET PAGE TECHNICAL SPECIFICATIONS: Material Types: A380 cast aluminum and mill finish extruded aluminum (6005A-T61 or 6061-T6), G180 steel, Galvalume, PC/ASA Maximum System Voltage: 1500V Maximum Module Width: 44.65" Hardware: Stainless steel Bonding and Grounding: UL2703 Listed Continuous Bonding Path TOOLS REQUIRED OR RECOMMEND FOR LAYOUT, ATTACHMENTS, AND INSTALLATION: •... -
Page 4: System Components
SYSTEM COMPONENTS PAGE TECHNICAL DATA SHEET MID RAIL NOTE: Mid rails have a provision to adjust the row to row spacing (8” or 11”). Two module width scales each corresponding 8” and 11” row spacing are printed on rail, so that rails are overlapped to achieve accurate module width connection. - Page 5 SYSTEM COMPONENTS TECHNICAL DATA SHEET PAGE SOUTH CLAMP (P/N: 360050) NORTH CLAMP (P/N: 360042/360043) WIND DEFLECTORS (P/N: 360100/360090/360102/ 360110) The south stanchion assembly is made of The north stanchion assembly is made a mill finish Aluminum and engages the of a mill finish Aluminum and engages Wind deflectors are made of G180.
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Page 6: Installation Steps
INSTALLATION STEPS INSTALLATION GUIDE PAGE INSTALL ROOF PADS ON RAILS Roof Pads snap onto Rails. Install a Roof Pad under every North Stanchion location and under every South Stanchion located at a south edge of an array. Ensure the stanchion bolt above each roof pad goes into the protruding boss in the roof pad. - Page 7 INSTALLATION STEPS INSTALLATION GUIDE PAGE MARK ROOF WHERE ARRAY WILL START: Use LOCATE ARRAY ON ROOF: Align South Rails ATTACH SOUTH RAIL TO MID RAIL: Overlap chalk line to mark distances from roof edge as with previous chalk lines. Rail Spacing Mid-Rails on top of South Rails, use the called out in construction documents.
- Page 8 INSTALLATION STEPS INSTALLATION GUIDE PAGE ATTACH NORTH STANCHION: Insert the front ATTACH SOUTH STANCHION: Depending on LAY BALLAST BLOCKS: Lay ballast blocks into tab of the North Stanchion into the slot of the the row to row spacing (8in or 11in), place the ballast trays.
- Page 9 INSTALLATION STEPS INSTALLATION GUIDE PAGE HIGHER BALLAST REQUIREMENT: An Align the smaller slots in Ballast Tray Place up to 4 half ballast blocks as needed. additional Ballast Tray can be installed with the hole used for the rail overlap in the connection between North rail to connection.
- Page 10 INSTALLATION STEPS INSTALLATION GUIDE PAGE MODULE CONNECTION, STEP 4: MODULE CONNECTION, STEP 5: Rest the north Tightening the South Stanchion bolts and end of the module on the North Stanchion Clamp. rotate the module down to rest on the North Install the adjacent module and tighten the Stanchion as shown.
- Page 11 INSTALLATION STEPS INSTALLATION GUIDE PAGE INSTALLATION OF FLASHLOC RM ATTACHMENT AND UNISTRUT Strut replaces Ballast Tray STEP 1: Position Flashloc RM attachment as per con- STEP 2: Place the L-foot on the Flashloc RM and STEP 3: Position the unistrut to match the holes on struction drawings and install according to Flashloc secure it with a 1"...
- Page 12 INSTALLATION STEPS INSTALLATION GUIDE PAGE INSTALLATION OF OPTIONAL WIND DEFLECTOR INSTALL WIND DEFLECTOR: Thread the bolts through TIGHTEN BOLTS TO TORQUE: the included 0.75" OD washer, then wind deflector, and Narrow side of the deflector will be on the bottom. into the threaded hole provided in north stanchion.
- Page 13 INSTALLATION STEPS INSTALLATION GUIDE PAGE INSTALLATION OF NORTH MID-SUPPORT WITH ROOF PAD STEP 2: Using the PV module cell lines, locate the STEP 1: To install the north mid-support base into the roof pad, place the north mid-support on the roof pad and press it.
- Page 14 INSTALLATION STEPS INSTALLATION GUIDE PAGE INSTALLATION OF WIND DEFLECTOR TO NORTH MID-SUPPORT STEP 1: STEP 2: STEP 3: Remove the bolt from the mid-support base. Attach Align the hole in the mid-support base with the Thread the bolt through the wind deflector and the wind deflector as per the instructions shown on wind deflector slot and the mid-support top slot.
- Page 15 INSTALLATION STEPS INSTALLATION GUIDE PAGE INSTALLATION OF SOUTH MID-SUPPORT WITH ROOF PAD STEP 2: Using the PV module cell lines, locate the module centre point STEP 1: To install the south mid-support, rotate it horizontally as shown in the (+/- 1"). Rotate back mid-support to vertical position. Install the mid- figure and insert it under the module's south side.
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Page 16: Module Replacement
5 and 6. module is connected. and rotate the keeper 90deg. IMPORTANT: Unirac 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 re-tightened replaced. -
Page 17: Bonding & Grounding
One lug is recommended per continuous array, not to exceed 150ft X 150ft. Unirac GridFlex is intended to be used with PV modules that have a system voltage less than or equal to that allowable by the National Electric Code (NEC). - Page 18 BONDING AND GROUNDING INSTALLATION GUIDE PAGE Optional Bonded Mid-Supports Grounding Clamp Grounding Lug Min. 10AWG, 105°C Copper Wire NOTE: Ground bond path can be established by installing the ground lug and copper wire connection to either the South Stanchion, North Stanchion, Rail, Wind Deflector, or Ballast Tray Module to South Stanchion to Rail Connection...
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Page 19: System Level Fire Code Compliance
SYSTEM LEVEL FIRE CODE COMPLIANCE SYSTEM CERTIFICATION PAGE SYSTEM LEVEL FIRE CLASSIFICATION: The system fire class CLASS A FIRE RATING MOUNTING ORIENTATION rating is only valid when the installation is conducted in GridFlex™ has achieved Class A system level fire performance for accordance with the assembly instructions contained in type 1, 2, 3 with a metal frame, 19, 22, and type 25 module this manual over a fire resistant roof covering rated for the... -
Page 20: Code Compliance Notes
UNIRAC CSA SM, GFT, ULA LABEL EXAMPLE FOR REFERENCE ONLY CODE COMPLIANCE NOTES SYSTEM CERTIFICATION PAGE UL2703 System Label: To comply with UL2703 system rating, North rail has a stamp of system label as shown below ###X MM/YYYY GRIDFLEX UNIRAC TYPICAL PTL LABEL... -
Page 21: Mechanical Load Testing
PV module may have reduced load rating, independent of the GridFlex™ rating. Please consult the PV module manufacturer's installation guide for more information. • Load rating may vary based on PV module area. Please Contact Unirac for more information • Basic single and double wall frame profiles... - Page 22 MECHANICAL LOAD TESTING SYSTEM CERTIFICATION PAGE Mechanical Load Testing Cont. Standard Installation Installed with Third Rail at Installed with Mid-Support Area Configuration - No Mid-Supports Module Center Component Manufacturer Module (sq ft) Up Design Load Down Design Up Design Down Design Up Design Down Design (psf)
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Page 23: Compatible Modules
• Please see GridFlex information at Unirac.com to ensure the exact solar module selected is approved for use with GridFlex • Listed models can be used to achieve a Class A fire system rating, for low slope applications, only when modules fire typed 1, 2, 3 with a metal frame, 19, 22, or 25. - Page 24 • Please see GridFlex information at Unirac.com to ensure the exact solar module selected is approved for use with GridFlex • Listed models can be used to achieve a Class A fire system rating, for low slope applications, only when modules fire typed 1, 2, 3 with a metal frame, 19, 22, or 25.
- Page 25 • Please see GridFlex information at Unirac.com to ensure the exact solar module selected is approved for use with GridFlex • Listed models can be used to achieve a Class A fire system rating, for low slope applications, only when modules fire typed 1, 2, 3 with a metal frame, 19, 22, or 25.
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