Tamarack Solar UNI-GR/90 User manual

Installation Manual
Ground Roof
Mount Series
Installation M anual
2022 Edition
UNI-GR-MAN v3
Formodels:
Panel Support length
UNI-GR/90 90”
UNI-GR/130 130”
The picture at rtight shows the rear view of 2 of the UNI-
GR mounts connected with the optional intertie kit.

Installation Manual
Ground Roof
Mount Series
[e-mail] 1-800-819-7236 Ext 556 Page 1
Bolt Size Dry Lubricated
1/4-20 6 /(75) 5 /(64)
5/16-18 11 /(132) 9 /(112)
18-8 Stainless
Torque Values in Ft Lbs \ (In Lb)
Table of Contents
Introduction ...................................................................................................................................................1
Customer Support ..........................................................................................................................................1
Tools Required ...............................................................................................................................................1
Pre Assembly .................................................................................................................................................3
Step 1: Connect Panel Support Channels ......................................................................................................3
Step 2: Determine foot spacing ......................................................................................................................4
General specification chart..............................................................................................................................5
Step 3: Foot attaching options ......................................................................................................................5
Step 4 Attaching PV modules to panel supports ............................................................................................7
Final Assembly ...............................................................................................................................................8
Step : 1 Attach U-foot to footings ......................................................................................................................8
Step 2: Attach Preassembled rear braces to footings. ..................................................................................8
Step 2: Attach Pre Assembled Panel array to footings. ................................................................................9
Step 3: Attach rear braces to panel supports ...............................................................................................9
Step 4: Multi-Mount Intertie Installation ...................................................................................................10
InstallerResponsibility .................................................................................................................................11
Warranty Information...................................................................................................................................11
Introduction
The Universal Ground/Roof Mount is a simple and universal mounting solution up to 3 solar panels.
With its user-adjustable angle settings, the Ground/Roof Mount can support installations in a wide
range of locations, as a standalone or multiple mounts intertied in rows. Quantities of panels
supported vary by panel widths.
Customer Support
Tamarack Solar makes every effort to ensure your m ounting kit is easy to install. If you need
assistance at any point in your installation or have suggestions on how we can improve your
experience, call customer support at 1-800-819-7236 ext 556 or email us at
[e-mail].
Tools Required
Tools that support the following size Hex heads: Torque values listed in the
manual are “dry”, the use of anti-seize lubricant on Stainless hardware is
Recommended (see the torque chart).
1. 7/16” Socket
2. 1/2" Socket

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Components List
The following parts are included with the GR mounts
Part # Description UNI-GR/90 UNI-GR/130
51-0627-003 Channel Connector 2 2
51-0545-001 Panel Support Channel - 45-inch 4
51-0565-001 Panel Support Channel - 65-inch 4
51-0546-000 Inner Brace Channel - 46-inch 2 2
51-0546-001 Outer Brace Channel - 46-inch 2 2
51-6000-003 U-Foot 4 4
51-6000-004 Backing Plate 4 4
29-5001-100 Mount Assembly Hardware – 5/16-inch 1 1
29-5001-0GR Module Mounting Hardware – ¼-inch 4 4
Inner\Outer Brace channels Channel Connector
Panel support Channel
U-Foot and Backing Plate

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Pre Assembly
Step 1: Connect Panel Support Channels
A. Slide the 10” connector halfway into the end of the one of the panel support and install the 5/16”
hardware, Torque to 132 in-lbs. repeat with the second panel support to achieve the overall panel
support length
B. UNI-GR/90 uses two 45” panel support channels. UNI-GR/130 uses two 65” panel support channels

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Step 2: Determine foot spacing
There are many combinations of bolting locations and brace overlap configurations to achieve foot
spacing’s for the angle(s) desired for your location, the following is a process to make that
determination to fit your requirements, or use the general specification chart on page 5.
A. For the front to rear distance, loosely assemble the A frame section as shown below, adjust the rear leg
brace maintaining the minimum 6” overlap or more (“C”) to support the panels at the desired angle to
the sun and keeping the rear leg within 60° to 90° to the panel supports. With the “A” frame laying on
a flat surface measure the center to center distance between the U-feet to determine the front to rear
spacing for the footing.
B. Keep the rear brace assembled at the overlap determined in prior operation, preassemble the second
pair and set aside.
C. For the side-to-side footing of both “A” frames, the center to center spacing is equal to the center-to-
center distance of the mounting holes on the PV module you are using, See mount spacing diagram on
PAGE 5.
D. If you are installing multiple UNI-GR mounts side-by-side, leave a 1” space between the edges of the
modules on each mount. To determine the spacing between mounting feet, measure the distance from
the short edge of the modules to the mounting hole you are using. The recommended spacing
between mounting feet on adjacent mounts is two times the distance from the edge of the panel to
center of the mounting hole plus 1”. See the diagram in Step 1 of Final Assembly on page 8

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General specification chart
The tables below are suggested front to back foot spacing “E” with the tilt angles that can set at that
spacing. “A” is module tilt angle from the horizontal, “C” is the overlap of the back leg sections and “D” is the
distance from the top of the module mounting rail to the hole used to connect the back leg. See the
diagrams on Page 4.
UNI-GR/90 UNI-GR/130
"A" ANGLE Û Û Û 36 "A" ANGLE Û Û Û 32
"C" OVERLAP 16" 28 40 44" "C" OVERLAP 10" 22 34 44
"D" DISTANCE 15 15 15 15 "D" DISTANCE 41 41 41 41
"E" FOOT SPACING 78 78 78 78 "E" FOOT SPACING 75 75 75 75
UNI-GR/90 UNI-GR/130
"A" ANGLE 55 Û Û Û 25 "A" ANGLE 45 Û Û 20
"C" OVERLAP 6 12 24 38 44 "C" OVERLAP 8 16 30 44
"D" DISTANCE 15 15 15 15 15 "D" DISTANCE 41 41 41 41
"E" FOOT SPACING 104 104 104 104 104 "E" FOOT SPACING 120 120 120 120

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Step 3: Foot attaching options
Use Galvanized or Stainless-Steel Hardware
See Suggestions below:

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Step 4 Attaching PV modules to panel supports
A. Lay the PV Modules face-down on a protected flat surface mounting hole side up.
B. Lay the flat side of the panel support channels across the panels keeping panels and supports
parallel.
C. Align mounting holes on the panels with the slots on the panel supports, allow
Approximately 1/4" to 1” in between PV modules and leave any available left-over support length at
the bottom of the array for ground clearance to allow for vegetation management.
D. Secure with 5/16” hardware and torque to 132 in-lbs. if the mounting holes on the solar panels are
large enough. If the panels have 1/4” or 6 mm holes, use the ¼” hardware in the 29-5000-0GR
mounting hardware kits and torque them to 75 in-lbs.

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Final Assembly
Step: 1
Attach U-foot to footings
A. Attach the U-foot and backing plate to your footings, align the feet east\west and north\south
and torque 3/8-16 galvanized hardware to 16 ft-Lbs. (Concrete footings shown)
Space between
mounts
Step 2: Attach Preassembled rear braces to footings.
A. Loosely attach the pre-assembled rear brace to the rear footings (pre-assembled from the
prior angle determination step). The “outer leg” is attached to the foot. Lay back away from
the front for next step.

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Step 3: Attach Pre-Assembled Panel array to footings.
A. Loosely attach one end of the Panel assembly to the U-feet on the footings.
Step 4: Attach rear braces to panel supports
A. Tilt up the array, and the rear braces, and bolt the rear leg into the hole chosen at the distance on
step 2 of “Determine
foot spacing ” operation, or the general spec chart.
B. Torque all locations to 132 in-lbs.