Legrand DSBEA - Manual

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]
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]
Solar panels supported by Delta Strut
on Metal Raised Seam Roof
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.
DS-S5
DSBRSW
DSPCC
DSMHDC is spring-loaded and
stays in position while panels
are positioned.
DSMHDC
Use two DSSA to splice any two
sections of Delta Strut tray.
DSSA
Use GNDSB split-bolt lug
grounding connector to
properly ground each solar
support row.
GNDSB
FIGURE A
FIGURE B
FIGURE C
FIGURE D
C
A