GROUND MOUNT INSTALLATION MANUAL
Contents DISCLAIMER 1 RATINGS 2 MARKINGS 2 CHECKLIST 3 1. BUILD BASE 4 2. CONNECT SUBSTRUCTURE 4 3. PLACE RAILS 5 4. SECURE LUGS 5 5.
RATINGS UL 2703 LISTED #5003225 • Conforms to STD UL 2703 (2015) Standard for Safety First Edition: Mounting Systems, Mounting Devices, Clamping/ Retention Devices, and Ground Lugs for Use with Flat-Plate Photovoltaic Modules and Panels. • Conforms to Canadian requirements LTR AE-001-2012 Photovoltaic Module Racking Systems. • Max Overcurrent Protective Device (OCPD) Rating: 25A • Max Module Size: 24ft² • Max Frameless Module Size for Canadian LTR-AE: 19.
CHECKLIST PRE-INSTALLATION IRONRIDGE COMPONENTS ☐☐ Verify module compatibility. See Page 12 for info. ☐☐ Purchase 2” or 3” ASTM A53 Grade B Schedule 40 Pipe, galvanized to a min of ASTM A653 G90 or ASTM A123 G35, or 2” or 3” Allied Mechanical Tubing with Gatorshield or FlowCoat Zinc coating (ASTM A1057).
1. Build Base A. MARK LOCATIONS A Establish pier locations. Once grid of pier locations has been set, verify all angles are square. ÞÞ Spacing varies with load conditions. Consult engineering specs. B. POSITION PIERS B Excavate the foundation holes. Insert vertical piers into foundation holes, and pour in concrete mixture. Ensure vertical piers are plumb, level, square, and placed in parallel rows. Level the tops so they are even.
3. Place Rails A. ATTACH HARDWARE A On the ground, attach Rail Connector brackets to rail by sliding 3/8”-16 bonding bolts into side slot. Space out to match pier spacing. With brackets in place, finger tighten flange nuts onto bolts. ÞÞ Tape ends of rail, to keep bolts from sliding out while moving. B. FASTEN CONNECTORS Center rails on cross pipes, leaving equal distance on ends. Secure with Rail Connector hardware: 3/8”-16 U-bolts, flange nuts, flat washers, and lock washers.
5. SECURE MODULES A. SECURE FIRST END A UFO 80 in-lbs Place first module in position on rails, a minimum of 1” from rail ends. Snap Stopper Sleeves onto UFO. Fasten module to rail using the UFO, ensuring that the UFO is hooked over the top of the module. Torque to 80 in-lbs. ÞÞ Ensure rails are square before placing modules. ÞÞ Hold Stopper Sleeves on end while torquing to prevent rotation. ÞÞ ÞÞ If using CAMO instead of UFO + Stopper Sleeve, refer to Page 7 for CAMO installation procedure. B.
CAMO A. SLIDE INTO RAIL A Slide CAMO into rail channel far enough to clear the module frame. CAMO requires 6" of clearance from end of rail. B. PLACE MODULE 6" Cle ara nc e B Place module on rails (module cells not shown for clarity). When installing CAMO the module can overhang the rail no more than 1/4”. C. PULL TOWARDS END C Pull CAMO towards rail ends, at 45 degree angle, so the bonding bolt contacts the module flange edge. D.
ELECTRICAL DIAGRAM UFO or UFO Clamp CAMO Grounding Lug* Fault Current Ground Path Min 10 AWG* Copper Wire Cross Pipe Optional Cross Brace Rail Bonding Points Fault Current Ground Path Section View Cross Pipe *Grounding Lugs and wire are not required in systems using certain Enphase microinverters or certain Sunpower modules. Equipment grounding is achieved with the Engage cable for Enphase or the AC module cable system for Sunpower via their integrated EGC.
DIAGONAL BRACES (OPTIONAL) Slide sleeve on north pier 2-3” above the ground (6” max). Attach Diagonal Brace to sleeve with 1/2” hardware. Slide second sleeve up on south pier 2-3” below top cap (6” max). Raise Diagonal Brace to align holes in sleeve and brace. Attach hardware and raise sleeve to full extent. Torque Diagonal Brace bolts to 40 ft-lbs. Torque set screws to 15 ft-lbs.
SPLICING CROSS PIPE The following instructions should be followed, when required, to join more than one section of cross pipe together to ensure bonding is maintained throughout the system. A A. ALLIED MECHANICAL TUBING SPLICES Mechanical tube splices shown in the table below shall be of equivalent Allied Flowcoat or Gatorshield zinc coating. Mechanical Tube Size of the Structure Splice Tube Size 2.375” OD, 12 Gauge 2.000” OD, 9 Gauge, Minimum 12” Long 3.500” OD, 8 Gauge 3.
MICROINVERTER KITS Use IronRidge's Microinverter Kit to bond compatible microinverters and power optimizers to the racking system. Insert Microinverter Kit T-bolt into top rail slot. Place compatible microinverter or power optimizer into position and tighten hex nut to 80 in-lbs. ÞÞ If installing in areas with ground snow loads greater than 40 psf and underneath a module, install MLPE devices as close as possible to module frame edge.
FRAMELESS MODULE KITS Insert Frameless Kit T-bolt in top rail slot. Place star washer over T-bolt, allowing it to rest on top of rail. Secure module clamps with a hex nut and torque to 80 in-lbs. Place Star Washer ÞÞ Tested or evaluated module clamps: • Sunforson silver or black SFS-UTMC-200(B) mid and SFSUTEC-200(B) end clamps. • Sunpreme silver or black mid and end clamps with part numbers 7500105X where X can be 1, 5, 6 or 7.
MODULE COMPATIBILITY ET Solar ET Solar modules with 35, 40 and 50 mm frames ET-Y6ZZxxxAA Where “Y” can be P, L, or M; “ZZ” can be 60 or 72; “xxx” refers to the module power rating; and “AA” can be WB, WW, BB, WBG, WWG, WBAC, WBCO, WWCO, WWBCO or BBAC Flex Flex modules with 35, 40 and 50 mm frames and model identifier FXS-xxxYY-ZZ; where "xxx" is the module power rating; "YY" can be BB or BC; and "ZZ" can be MAA1B, MAA1W, MAB1W, SAA1B, SAA1W, SAC1B, SAC1W, SAD1W, SBA1B, SBA1W, SBC1B, or SBC1W GCL GigaWat
MODULE COMPATIBILITY Motech Neo Solar Power Panasonic Peimar Phono Solar Prism Solar REC Solar Renesola Renogy Risen S-Energy Seraphim Energy Group Seraphim USA Sharp Silfab Solaria IM and XS series modules with 40, 45 and 50 mm frames Neo Solar Power modules with 35 mm frames D6YxxxZZaa Where "Y" can be M or P; xxx is the module power rating; "ZZ" can be B3A, B4A, E3A, E4A, H3A, H4A; and "aa" can be blank, (TF), ME or ME (TF) Panasonic modules with 35 and 40 mm frames BHNxxxYYzzA Where "xxx" refers to t
Module Compatibility Suniva Sunpower Sunpreme Sunspark Suntech Talesun Trina Vikram Winaico Yingli Suniva modules with 35, 38, 40, 46 and 50 mm frames OPTxxx-AA-B-YYY-Z MVXxxx-AA-B-YYY-Z Where "xxx" is the module power rating; "AA" is either 60 or 72; "B" is either 4 or 5; "YYY" is either 100,101,700,1B0, or 1B1; and "Z" is blank or B Sunpower standard (G3 or G4) or InvisiMount (G5) 40 and 46 mm frames SPR-Zb-xxx-YY Where "Z" is either A, E, P or X; “b” can be blank, 17, 18, 19, 20, 21, or 22; “xxx” is t
