RM5 TABLE OF CONTENTS: Tools & Specifications System Components System Level Fire Code Compliance Locate Array & Place Bays Place Ballast & South Modules Place Modules & Attach Clamps Ballast Bay Wind Deflectors Connect Grounding Lugs Mechanical Loading Compliance INSTALLATION GUIDE PG 1 2 3 4 5 6 7 8 9 TABLE OF CONTENTS (CONT): PG GENERAL NOTES: Bonding & Grounding System Certification Bonding & Grounding System Certification Bonding & Grounding Electrical Diagram Temporary Bonding Procedures Instal
RM5 TECHNICAL SPECIFICATIONS: TOOLS & SPECIFICATIONS TECHNICAL DATA SHEET PAGE LAYOUT ASSISTANCE TOOL: Material Types: 16G ASTM A653 GR50 Steel Coating(s): G235 Galvanization, G180 Galvanization, G40 Galvinization + InterCoat® ChemGuard, G60 Galvinization + InterCoat® ChemGuard or G80 Galvinization + InterCoat® ChemGuard Hardware: Stainless Steel Bonding and Grounding: UL2703 Listed Continuous Bonding Path.
RM5 SYSTEM COMPONENTS 2 TECHNICAL DATA SHEET PAGE BALLAST BAY: The Ballast Bay is constructed of a high strength low alloy steel with a coating to protect against corrosion. This system has a modular design that allows for easy installation around roof obstructions and accommodates roof undulations. The Ballast Bays are designed to nest within each other to optimize shipping logistics. NOTE: Systems installed on PVC roofs require ballast bays with preinstalled Santoprene pads.
RM5 SYSTEM LEVEL FIRE CODE COMPLIANCE SYSTEM LEVEL FIRE CLASSIFICATION: The system fire class rating is only valid when the installation is conducted in accordance with the assembly instructions contained in this manual over a fire resistant roof covering rated for the application. RM ROOFMOUNT has been classified to the system level fire portion of UL2703. It has achieved Class A performance for low sloped roofs when used in conjunction with type 1 and type 2 module constructions.
RM5 LOCATE ARRAY & PLACE BAYS 4 INSTALLATION GUIDE PAGE N N x x SNAP SOUTH PERIMETER CHALK LINE, THEN EAST OR WEST PERIMETER CHALK LINE. As best practice, on south edge of array mark lines to locate the center of each bay. SPACERS - OPTIONAL SUPPLEMENTAL BAYS - OPTIONAL PERIMETER COLUMN SPACER PERIMETER COLUMN SPACER DUAL SUPPLEMENTAL BAYS COLUMN SPACER COLUMN SPACER SPACERS - OPTIONAL N PLACE SOUTH PERIMETER BAYS FIRST.
RM5 PLACE BALLAST & SOUTH MODULES INSTALLATION GUIDE PAGE PLACE ALL BALLAST: A maximum of two (2) ballast blocks can be placed in each ballast bay, typically pushed into the retention feature on the north or south edge. The North perimeter requires ballast blocks to be pushed towards the southern edge of the ballast bay to accommodate wind deflectors. Site specific ballast calculations should be created for each individual project in accordance with the U-Builder design software.
RM5 MODULE PLACEMENT & ATTACH CLAMPS 6 INSTALLATION GUIDE PAGE 1/4"-20 x 2 1/2 IN. Stainless Steel Bolt & End Clamp 1/4"-20 Stainless Steel U-Nut EAST OR WEST EDGE MODULE PLACEMENT COMPLETE MODULE PLACEMENT INSTALL U-NUT & INSTALL CLAMPS NOTE: Modules may be placed on bays without immediate installation of clamps. NOTE: Wiring, wire management, and electrical QC should be done as each row is built, especially in case of 7.5" row spacing to ensure adequate room for installation.
RM5 STEP 1 - U - NUTS: Install u-nuts on side flange BALLAST BAY WIND DEFLECTORS 7 INSTALLATION GUIDE - SUPPLEMENT PAGE STEP - 2 WIND DEFLECTOR: Position wind deflector in the slots provided in the bay STEP 3 - HARDWARE: Secure wind deflector with 1 ½” O.D. flat washer and ¼-20 x 1” Bolt, as shown above TORQUE VALUE: 10FT-LBS NOTE: If the system requires wind deflectors do not leave arrays without installing wind deflectors.
RM5 CONNECT GROUNDING LUG 8 INSTALLATION GUIDE PAGE NOTE: The installation must be conducted in accordance with the National Electric Code ANSI / NFPA 70. Ground Lug Bolt Size Torque Value Ilsco Lug SGB-4 1/4"-20 6.5 ft-lbs (75 in-lbs) Ilsco Lug GBL-4 #10-32 2.9 ft-lbs (35 in-lbs) Wiley 6.
RM5 MECHANICAL LOADING COMPLIANCE 9 INSTALLATION GUIDE PAGE MECHANICAL LOAD TEST QUALIFICATION The Unirac RM system has been tested to the mechanical load provisions of UL2703 and covers the following basic parameter(s): • Tested loads: 25.87 psf up, 54.3 psf down, 7.5 psf down-slope • Certification Loads: 17.24 psf up, 36.2 psf down, 5 psf down-slope • PV modules may have a reduced load rating, independent of the RM5 load rating.
RM5 BONDING & GROUNDING SYSTEM CERTIFICATION 10 INSTALLATION GUIDE PAGE ELECTRICAL BONDING & GROUNDING TEST MODULES: This racking system may be used to ground and/or mount a PV module complying with UL1703 or UL61730 only when the specific module has been evaluated for grounding and/or mounting in compliance with the included instructions.
RM5 BONDING & GROUNDING SYSTEM CERTIFICATION 11 INSTALLATION GUIDE PAGE ELECTRICAL BONDING & GROUNDING TEST MODULES: This racking system may be used to ground and/or mount a PV module complying with UL1703 or UL61730 only when the specific module has been evaluated for grounding and/or mounting in compliance with the included instructions.
RM5 BONDING & GROUNDING SYSTEM CERTIFICATION 12 INSTALLATION GUIDE PAGE ELECTRICAL BONDING & GROUNDING TEST MODULES: This racking system may be used to ground and/or mount a PV module complying with UL1703 or UL61730 only when the specific module has been evaluated for grounding and/or mounting in compliance with the included instructions.
RM5 BONDING & GROUNDING ELECTRICAL DIAGRAM 13 INSTALLATION GUIDE PAGE Fault Current Ground Path Ground Lug Grounding Clip & Bolt Min.
RM5 TEMPORARY BONDING PROCEDURES 14 INSTALLATION GUIDE PAGE TEMPORARY GROUNDING & BONDING PROCEDURE: Periodic inspections should be conducted on the PV array to ensure there are not loose components, loose fasteners or corrosion. If any of the above items are found, the affected components are to be immediately replaced. NOTE: If a module must be removed or replaced, a temporary bonding jumper must be used to ensure safety of the personnel and PV system.
RM5 STEP 1 - PLACE NUT AND WASHER: Include the nut and washer on the anchor stud prior to placing the stud through the strut. STEP 4 - SECURE UNISTRUT TO ROOF AT TACHMENT: Place 3/8” washer and 3/8-16 serrated flange nut on anchor stud, serrations facing down and tighten to 30 ft-lb.
RM5 MICROINVERTER INSTALL & WIRE MGMT. PRE-INSTALL MICROINVERTERS: Install MLPE in a location on the module that will not interfere with ballast bays or grounding lugs. To use trunk cable most efficiently, install MLPE components in the same locations on all modules in the same row.
