CHIKOUSA CK-U2V Steel Ground Mount Solar Panel Ground Instruction Manual

: September 27, 2024
: CHIKOUSA

Table of Contents

CK-U2V Steel Ground Mount Solar Panel Ground
Product Specifications
Product Usage Instructions
Installation Tools Required:
Installation Rules:
Installation Steps:
- Frequently Asked Questions (FAQ)
Q: What is the maximum span for this ground mount system?
Q: What certifications does this racking system have?
Q: What is the maximum rated current for this product?

CK-U2V Steel Ground Mount Solar Panel Ground

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Product Specifications

Product Model: CHIKO CK-U2V
Mount Type: Steel Ground Mount
Max Span: 9′
Max Rated Current: 30A
Design Load:
- Downward Pressure – 10 psf allowable load
- Upward Pressure – 5 psf allowable load
- Down-Slope Load – 5 psf allowable load
UL Certification: UL 2703 for Bonding, grounding, mechanical
loading, and fire classification

Product Usage Instructions

Installation Tools Required:

Tape Measure
Chalk Line
Labor Protection Products
End Clamp
Mid Clamp
Allen Key
Front V Leg
Rear V Leg
Beam
Beam Splice
Open-end Spanner
Strengthen Pipe
Rail
Rail Splice Kit

Installation Rules:

Comply with relevant local government standards and
manufacturer’s specifications.
Ensure the roof conforms to local government standards.
Develop safe work procedures and provide appropriate training
and PPE.
Prevent falls and ensure emergency procedures are known to all
employees.

Installation Steps:

Insert Ground Screw: Place the ground mount
attachment into the ground as per the provided drawing.
Connect Top Beams:
Join two sections of top beams with Beam Splice using M10x80
Hardware.
Mark the beam sections for proper installation on the front and
rear legs.
Install Beams: Attach beams to front and rear
legs using hex bolts M10*80 with specified torque values.
Assemble V Legs: Pre-assemble front and rear V
legs with V bases using hex bolts M10*80 with specified torque
values.

Frequently Asked Questions (FAQ)

Q: What is the maximum span for this ground mount system?

A: The maximum span for this system is 9 feet. Please review the
span charts considering site conditions for accurate
calculations.

Q: What certifications does this racking system have?

A: This racking system has been tested and evaluated to UL 2703
for Bonding, grounding, mechanical loading, and fire
classification.

Q: What is the maximum rated current for this product?

A: The maximum rated current is 30A.

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10 PANEL
30 PANEL
CHIKO CK-U2V
Steel Ground Mount
Installation Manual
Version 2023.06.2

I Installation Tools

Steel CK-U2V Ground Mount Installation Manual

Tape Measure

Chalk Line

Labor Protection Products

End Clamp

Mid Clamp

Allen Key

Front V Leg

Rear V Leg

Beam

Beam Splice

Open-end Spanner

Strengthen Pipe

Rail

Rail Splice Kit

II Installation Rule

Installation of the framing shall comply with relevant local government standards, manufacturer’s specifications and good building practices. The roof which the panels are to be installed shall conform to the relevant local government standards.
Follow the risk management process prior to commencing work that is, identify all the hazards, assess their risks and eliminate or control them.
Consult with those involved in the work.
Develop safe work procedures for installing solar panels, using information from the risk management process, which would include reviewing the following information:
Provide appropriate information and training to those involved in performing the work. Provide appropriate tools and personal protective equipment (PPE). Ensure that a system is in place to prevent or arrest falls. Ensure there are adequate first aid facilities. Ensure all employees are aware of the emergency procedures.

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Steel CK-U2V Ground Mount Installation Manual

III Notice
1. Max Span 9′
(Review current span charts and apply all applicable site conditions to include wind, snow, module size, tilt, etc. to determine recommended site span calculations.)
2. Max. Rated Current: 30A 3. Minimum design load for Chiko CK-U2V STELL GROUND MOUNT mounting system:
a) Downward Pressure – 10 psf allowable load b) Upward Pressure – 5 psf allowable load c) Down-Slope Load – 5 psf allowable load 4. This ground mount system is used for in ground mounting 5. This racking system has been tested and evaluated to UL 2703 for Bonding, grounding, mechanical loading and fire classification, and may be used to ground and/or mount PV modules listed to UL 1703 or UL 61730.
IV Components

1. Base Support & Beam

2. Rail

3. Splice

4. End Clamp

5. Mid Clamp

6. Strengthen Pipe

8

7. Ground Screw

8. Beam Splice

3

6

2

4 5 7

1

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Steel CK-U2V Ground Mount Installation Manual

V Installation Steps
Insert Ground Screw, Trident Mount, or other approved ground mount attachment into the ground according to drawing. 1
D

1.1

1.2

1.3

Connect 2 sections of the top beams (78.7″ & 82.6″) with the Beam Splice (15.7″) connect the beams with the M10x80 Hardware, once 2 beams are spliced together the new total beam length will be 161.4″ Mark the 82.6″ section of Beam with a clearly visible mark on beam that can be seen from a top view. Ensure that the marked portion of the beam is installed on the high side or the side with the longest legs. (The marked portion was originally 82.6″)
2

78.7″
Install the beam on front leg and rear leg by hex bolts M10*80 (1 flat washer, 1 spring washer, 1 nut). M10: tighten torque is 30N.m; safe torque is 40N.m; 3

161.4″

82.6″
2.1

hex bolt M10*80

The front V leg and rear V leg are pre-assembled with V bases by hex bolts M10*80 (1 flat washer, 1 spring washer, 1 nut).
M10: tighten torque is 30N.m; safe torque is 40N.m;

3.1

3.2

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3

4
hex bolt M12*35

hex bolt M10*80

Steel CK-U2V Ground Mount Installation Manual

4.1

4.2

Connect the V leg bases to ground screws by hex bolts M12*35 (2 flat washers, 1 spring washer, 1 nut); M12: tighten torque is 50N.m; safe torque is 55N.m;
Use the same attachment method and torque specs when utilizing the Trident Mount. When connecting bases to concrete using anchor bolts follow the specific anchor bolt installation instructions.

5

hex bolt M10*30

Connect rail to the beams by hex bolts

M10*30 (1 flat washer, 1 spring washer, and 1 nut);

5.1

M10: tighten torque is 30N.m; safe torque is 40N.m;

hex bolt M10*30

Use rail splice kit to connect 2 rails by hex bolts

5.2

M10*30 (2 flat washers, 1 spring washer, and 1 nut).

M10: tighten torque is 30N.m; safe torque is 40N.m;

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4

6
6.1 7

Steel CK-U2V Ground Mount Installation Manual

hex bolt M10*60

Connect 2 sections of strengthening pipe with orchid bolt in the middle of the pipes, then connect either end of the connected strengthening pipe between 2 rear V legs by hex bolts M10*60 (2 flat washer, 1 spring washer and 1 nut) after threaded rod has been inserted through connection bracket place washers and nut on end of strengthening pipe.
M10: tighten torque is 30N.m; safe torque is 40N.m;

hex bolt M8*25

hex bolt M8*50 7.1

Install panels onto rails by fastening mid and end clamps. Note: End clamps by inner hex bolts M825 (1 spring washer, 1 plastic steel nut);
Mid clamps by inner hex bolts M850 (1 spring washer, 1 plastic steel nut).
M8: tighten torque is 15N.m; safe torque is 20N.m;

8

Double-check to make sure all bolts are

fastened tight after installing

all the panels.

30 PANEL

10 PANEL

8.1

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VI Grounding System

Steel CK-U2V Ground Mount Installation Manual

The grounding function of the whole mounting system connections is achieved by the following steps
1. Grounding Mid Clamp and Grounding End Clamp: Grounding & Solar Panel
2. Rail Splice Kit : Connect two rails
3. Beam Splice Kit : Connect two Beams
4. SUS Bolt and Nut: All mounting system connected
5. Ground screw: connect the mounting system to the ground 6. Grounding Lug 7. Copper wire (or other steel products): connect the mounting system to the ground
(if not ground screw foundation, such as concrete)

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Steel CK-U2V Ground Mount Installation Manual
Grounding Lugs are intended for use with one solid or stranded copper wire, conductor size range 10-6 AWG following local municipal and/or AHJ guidelines
CONTINUING MAINTENANCE
a) Any loose components or fasteners shall be re-tightened in accordance with these instructions b) Any components showing signs of damage that compromise safety shall be replaced immediately
FOR SINGLE USE ONLY
Bonding and grounding devices, are “For single-use only”, NOT multiple use) Module removal may disrupt the bonding path and could introduce the risk of electric shock. To ensure that the bonding path remains intact, additional steps may be necessary; qualified persons should follow the instructions in this manual.” Scenerios that could result in a disruption of the bonding path are irregularly-shaped arrays, arrays consisting of individual rows or any other scenario where module removal could disrupt the bonding path.

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Steel CK-U2V Ground Mount Installation Manual
Installation of Grounding Lug
Install a grounding lug (500mm from the rail end) on to each rail line edge with an inner hex bolt M825 and a stainless steel nut, then cross 8.4mm2 (greater than or equal to 8AWG) copper wire through all the grounding lugs (fixed by M820 inner hex bolt), finally connect copper wire to the ground. The grounding lug has grounding function when fastened tight to connect rail and copper wire. M8 Torque: 15~20N.m

Electrical Characteristics of AWG Copper Wire

AWG
6 7 8 9 10

Diameter [inches] 0.162 0.1443 0.1285 0.1144 0.1019

Diameter [mm] 4.1148 3.66522 3.2639 2.90576 2.58826

Resistance [Ohm / 1000ft.] 0.3951 0.4982 0.6282 0.7921 0.9989

Resistance [Ohm / km] 1.295928 1.634096 2.060496 2.598088 3.276392

Max Current [Amperes]

Max Frequency for 100% skin depth

37

1100 Hz

30

1300 Hz

24

1650 Hz

19

2050 Hz

15

2600 Hz

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Steel CK-U2V Ground Mount Installation Manual

Authorized to Mark

Equipment and components are authorized to be marked with the manufacturer’s name, trade name, trademark or other descriptive marking which identifies the organization responsible for The product, part number, and/or model number.

System Model No

: CK-U2V

Production Date : 20230315

Max. Rated Current

: 30A

Design Load :

Max. Size

: 6000mm

a) Downward Pressure – 10 psf

System Fire Class Rating : NA
See Installation Instructions for Installation Requirements to achieve a Specified System UL2703 Grounding

b) Upward Pressure – 5 psf c) Down-Slope Load – 5 psf

with this Product.

Manufactured Add

: No 680 Xingwen Rd. Jiading dist. Shanghai 201815, China

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Steel CK-U2V Ground Mount Installation Manual

EXAMPLE SPAN CHARTS (20 DEGREES)

20 DEGREES

Potrait

Standard Strength

72 Cell Module

Allowable Rail Span (ft.) based on Wind Speed and Ground Snow Load

Wind Speed
90 MPH 100 MPH 1150 MPH 130 MPH 150 MPH

Ground Snow Loads

0 psf 20 psf 40 psf 60 psf 80 psf

9

7

6

4

–

8

7

5

4

–

6

5

4

–

5

4

–

20 DEGREES

Potrait

Standard Strength

Large Format Module

Allowable Rail Span (ft.) based on Wind Speed and Ground Snow Load

Wind Speed
90 MPH 100 MPH 1150 MPH 130 MPH 150 MPH

Ground Snow Loads

0 psf 20 psf 40 psf 60 psf 80 psf

8

7

5

4

–

7

6

4

–

5

4

–

4

–

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Steel CK-U2V Ground Mount Installation Manual

Panel Start Location for 10 and 30 Panel Systems using 9′ Spans

10 Panel System

x5=

Panel

of

Width Panels in

Row Spacing

+ 6″ =

– = 248″

Distance Total Panel Total Rail of Clamps Width Plus Length
Clamp Distance

÷2= Distance From End of Rail to 1st Panel

Example : (Using 41.1″ wide module) 41.1″ x 5 = 205.5″ +6″ = 211.5″ – 248″ = -36.5″ / 2 = -18.25″ = 18.25″ Distance from end of Rail 1st Panel Edge Installed
End of Rail to Beam Distance 16″ Max Panel Width 48.4″ AHJ to provide max wind and snow span requirements for install location

30 Panel System

x 15 =

Panel

of

Width Panels in

Row Spacing

+ = 16″

– = 661.4″

Distance Total Panel Total Rail of Clamps Width Plus Length
Clamp Distance

÷2= Distance From End of Rail to 1st Panel

Example : (Using 41.1″ wide module) 41.1″ x 15 = 616.5″ + 16″ = 632.5″ – 661.4″ = -28.9″ / 2 = -14.45″ = -14.45″ Distance from end of Rail 1st Panel Edge Installed
End of Rail to Beam Distance 6.7″ Max Panel Width 43″ AHJ to provide max wind and snow span requirements for install location

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Side Profile Ground Mount

Steel CK-U2V Ground Mount Installation Manual

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Steel CK-U2V Ground Mount Installation Manual

CHIKOUSA Ground Mount 10 Panel System | 9 Foot Span | BOM

NEW CHIKO GROUND MOUNT; NUMBER OF NALES;

IMAGES

BOM COUNT

LENGTH IN INCHIES

12

82.7

10 DESCRIPTION
U72 Rail (2100mm)

(9 FOOT SPAN) PART NUMBER
CK-UR72-T2.5-001-2100

12

9.8

U72 Rail Splice Kit

CK-0221RU72-3-200

20

Mid clamp (30-40mm with grounding pin) CK-777RU-K-(30-40)-50

BEAM #1

BEAM #2

FRONT LEG

REAR LEG

8

End clamp (30-42mm with ground pin) CK-749RU-K-(30-42)-40

3

78.7

3

82.7

3

25.6 and 49.4

3

67.1 and 69.0

Beam #1-(2000mm) Beam #2-(2100mm) Front V LEG (Assembled) Rear V LEG (Assembled)

CK-ET-011-197-34-C261 – U2V-2000mm
CK-ET-011-197-34-C261 – U2V-2100mm
CK-ET-011-197-34-C26-2 CK-U2V-V-1705/1753
CK-ET-011-197-34-C26-3 CK-U2V-V-1705/1753

12

Bolts Kit for V Leg attched to Beam

CK-HS-006-2

3

78.7

Strengthen Pipe #1 (2000mm)

3

39.4

Strengthen Pipe #2 (1000mm)

CK-ET-011-197-34-

6

Strenghten pipe fix kit with Bolts

C26-4

Strengthen Pipe

2000mm+1000mm +

12

Nut and washer to fix Pipe

Connector

3

ORCHID BOLT/ PIPE Connector

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Steel CK-U2V Ground Mount Installation Manual

CHIKOUSA Ground Mount (CONTINUED) 10 Panel System | 9 Foot Span | BOM

6

65.0

Ground screw

6

Adjustable Flange

CK-GST-N16-3.0T2(H)800- 1600

36

31.5

Bolt to Tighten Top Flange to Ground Screw Bottom

12

Bolt to attach bottom V Legs to ground screw

CK-JGH-Q1235-2

1

Grounding Lug

CK-592RU-1-20

10

MLPE BOLT KITS for mico-inverter

CK-003RU(-37

12

5.9

Concrete Expansion Bolt M12*150

CK-JEB-12150

Mounting option: Ground Screw, Trident Mount, or Concrete Bolts (One Option Only)

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Steel CK-U2V Ground Mount Installation Manual

CHIKOUSA Ground Mount 30 Panel System | 9 Foot Span | BOM

NEW CHIKO GROUND MOUNT; NUMBER OF NALES;

IMAGES

BOM COUNT

LENGTH IN INCHIES

32

82.7

30 DESCRIPTION
U72 Rail (2100mm)

(9 FOOT SPAN) PART NUMBER
CK-UR72-T2.5-001-2100

32

9.8

U72 Rail Splice Kit

CK-0221RU72-3-200

60

Mid clamp (30-40mm with grounding pin) CK-777RU-K-(30-40)-50

BEAM #1

BEAM #2

FRONT LEG

REAR LEG

8

End clamp (30-42mm with ground pin) CK-749RU-K-(30-42)-40

7

78.7

7

82.7

7

25.6 and 49.4

7

67.1 and 69.0

Beam #1-(2000mm) Beam #2-(2100mm) Front V LEG (Assembled) Rear V LEG (Assembled)

CK-ET-011-197-34-C261 – U2V-2000mm
CK-ET-011-197-34-C261 – U2V-2100mm
CK-ET-011-197-34-C26-2 CK-U2V-V-1705/1753
CK-ET-011-197-34-C26-3 CK-U2V-V-1705/1753

28

Bolts Kit for V Leg attched to Beam

CK-HS-006-2

7

78.7

Strengthen Pipe #1 (2000mm)

7

39.4

Strengthen Pipe #2 (1000mm)

CK-ET-011-197-34-

14

Strenghten pipe fix kit with Bolts