Legrand DSBEA User Manual
Solar panels supported by Delta Strut
on Metal Raised Seam Roof
C
A
Legrand Delta Strut Solar Systems
have passed electrical/bonding
testing per UL 2703. The following
paragraph states the scope of the
UL standards:
These requirements cover rack
mounting systems and clamping devices
for flat-plate photovoltaic modules and
panels that comply with the standard
for Flat-Plate Photovoltaic Modules
and Panels, UL 1703, intended for
installation on or integral with buildings,
or to be freestanding (i.e., not attached
to buildings), in accordance with the
National Electrical Code, ANSI/NFPA 70
and Model Building Codes.
Installation Instructions:
1. Snap chalk lines for each DS
(Delta Strut) stringer row.
Rows should be located at even
intervals allowing roughly 1/4 of
the total PV length to overhang
the top and bottom stringer
(Allow 1/8” minimum between
panel rows for expansion).
2. Install DS-S5 clamps to roof
seams as required. Install on
roof seams (not exceeding
maximum span of 60” or roof
loading requirements).
3. Attach DSBRSW washer to
DS-S5 seam clamps using
bolt provided. Then attach DS
stringers to DSBRSW/DS-S5
assembly using DSPCC clamp
and self-threading screws
(sold separately). [Figure A]
4. Splice sections of DS together
using a DSSA splice kit (install
splices on both inside corners
of DS for a single splice). Torque
nuts to 6-8 ft/lbs. [Figure B]
FIGURE A
DSPCC
DSBRSW
DS-S5
For optimal holding strength,
screw tension should be 160
to 180 inch pounds on 22
ga. steel and 130 to 150 inch
pounds for all other metals
and thinner gauges of steel.
FIGURE B
DSSA
Use two DSSA to splice any two
sections of Delta Strut tray.
5. Pull string cabling into DS
stringer row.
6. Position first PV panel at the
beginning of first run, checking
for position and square, then
attach to DS using DSEHDC
(End Bolt/Clamp). Torque nuts
to 6-8 ft/lbs.
7. Connect PV cables to stringer
cables and secure cabling to
DS. Be aware that cabling is live
at this point.
8. Add next PV panel in run. Use
DSMHDC (Middle Bolt/Clamp Patent Pending) in areas where
two panels adjoin, ending each
row by utilizing a DSEHDC
(End Bolt/Clamp). Torque nuts
to 6-8 ft/lbs. [Figure C]
9. Each solar row to be connected
to Earth as specified in NEC
using proper sized ground
conductor and UL Listed
Split-bolt lug connected to
Delta Strut. [Figure D]
FIGURE C
DSMHDC is spring-loaded and
stays in position while panels
are positioned.
FIGURE D
Use GNDSB split-bolt lug
grounding connector to
properly ground each solar
support row.
DSMHDC
GNDSB
Solar panels mounted to Delta Strut
on Membrane Roof with Stanchions
D
E
C
A
Legrand Delta Strut Solar Systems
have passed electrical/bonding
testing per UL 2703. The following
paragraph states the scope of the
UL standards:
These requirements cover rack
mounting systems and clamping devices
for flat-plate photovoltaic modules and
panels that comply with the standard
for Flat-Plate Photovoltaic Modules
and Panels, UL 1703, intended for
installation on or integral with buildings,
or to be freestanding (i.e., not attached
to buildings), in accordance with the
National Electrical Code, ANSI/NFPA 70
and Model Building Codes.
Installation Instructions:
1. Snap chalk lines for each DS
(Delta Strut) support row.
Rows should be located at
even intervals (not exceeding
maximum span of 60” or roof
loading requirements).
2. Snap a second set of chalk lines
at a right angle to position angle
support legs. Actual spacing
should be in accordance with
the drawings provided with each
DS shipment.
3. Install stanchions along support
row according to manufacturer’s
recommendations and roofing
requirements. Install at even
intervals with (not exceeding
maximum span of 60” or roof
loading requirements).
4. Attach DS to stanchions with
DSPEBK (Pedestal Extension
Bracket Kit). [Figure A]
5. Splice sections of DS together
using a DSSA splice (install
splices on both inside corners
of DS for a single splice). Torque
nuts to 6-8 ft/lbs. [Figure B]
6. Install and splice all DS rows
before beginning next steps.
7. Install DSBEA (Angle Support
Assemblies). Attach rear
support to DS support first by
pivoting leg forward then secure
to DS using clamp and selfthreading screw. Attach front
clamp in the same manner.
[Figure C]
FIGURE A
DSPEBK
Bolt is tightened using socket
wrench or power drill thru
access hole.
FIGURE B
DSSA
Use two DSSA to splice any two
sections of Delta Strut tray.
FIGURE C
DSPCC
DSBEA
DSBPW
Self-threading screw is
tightened using socket wrench
or power drill thru access hole.
8. Install DS stringers to angle
supports. Position DS in angle
bracket saddle, then secure
with a DSPCC (Connection
Clamp and self-threading
screw). [Figure D]
9. Splice sections of DS stringers
together using a DSSA splice
kit (install splices on both
inside corners of DS for a single
splice).
10. Position first PV panel at the
beginning of first run, check for
position and square, then attach
to DS using DSEHDC (End Bolt/
Clamp). Torque nuts to 6-8 ft/lbs.
11. Add next PV panel in run. Use
DSMHDC (Middle Bolt/Clamp Patent Pending) in areas where
two panels adjoin. Torque nuts
to 6-8 ft/lbs. [Figure E]
12. Pull feeder cabling into DS
stringer row. Connect PV cables
to feeder cables and secure
cabling to DS. Be aware that
cabling is live at this point.
13. Each solar row to be connected
to Earth as specified in NEC
using proper sized ground
conductor and UL Listed
Split-bolt lug connected to
Delta Strut. [Figure F]
FIGURE D
Use punched pilot hole on
either side of bracket to allow
connection clamp clearance
from cross wire.
FIGURE E
DSMHDC is spring-loaded and
stays in position while panels
are positioned.
FIGURE F
Use GNDSB split-bolt lug
grounding connector to
properly ground each solar
support row.
DSPCC
DSMHDC
GNDSB
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