LX4RT LED SERIES
INSTALLATION INSTRUCTIONS
H.E. Williams, Inc. Carthage, Missouri www.hew.com 417-358-4065
Page 1 of 4
PN 49090154
07/21/16JL
WARNING:
• This product must be installed in accordance with the applicable
installation code by a person familiar with the construction and
operation of the product and the hazards involved.
• Make sure all electrical power is turned off while installing the fixture.
• This luminaire must be adequately grounded for protection against
shock hazards and to assure proper operation.
• Disconnect power before servicing.
• LEDs are ESD (Electro Static Discharge) sensitive devices that can be
easily damaged if the proper ESD mitigating steps are not taken.
• LEDs are very sensitive to mechanical damage. Caution must be taken
to avoid damage to the LEDs.
• ESD or mechanical damage voids all warranties.
FIXTURE MUST BE INSTALLED PRIOR TO DRYWALL OR FINISHED CEILING MATERIAL.
STEP 1: CEILING FRAMING ALLOWANCES
WARNING:
Ceiling material attaches to this fixture but the
attachment is
NON-STRUCTUAL
.
Ceiling material
MUST
be structurally supported by framing or other
means.
• Framing allowance for width of stand-alone fixtures is 5 ½”
minimum.
• Framing allowance for width of continuous row mounted fixtures
is 14 ½” for access to cinching screw.
• Framing allowance for length (if desired) is the ACTUAL
ILLUMINATED LENGTH shown on fixture specification sheet
+1-1/2” minimum. Additional clearance may be required for end
plate electrical hook-up.
STEP 2: FIXTURE PREPARATION
A. INSTALL BACKER FLANGES FOR PROPER CEILING
THICKNESS
• HAND TIGHTEN Screws. DO NOT OVER TIGHTEN.
• Use tin snips to modify Backer Flange length as required.
Fig. A
Ceiling Thickness Chart
Channel Position
A
B
C
1
1/4
7/8
1-1/2
Backer
2
3/8
1
1-5/8
Flange
3
1/2
1-1/8
1-3/4
Position
4
5/8
1-1/4
1-7/8
5
3/4
1-3/8
2
• Find ceiling material thickness in Ceiling Thickness Chart (Fig. A).
• Find the corresponding Backer Flange position number (Fig. B).
• Find the corresponding Channel position (Fig. C).
• Align the hole position in the Backer Flange with the position on
the Channel and install Backer Flange to Channel with #8 x 1/4”
long screws provided.
• DO NOT OVER TIGHTEN SCREWS
Fig. B
Backer Flange Positions
B. JOINER FIXTURES (as required) FOR ROW-MOUNT
APPLICATION ONLY
NOTE:
In a continuous row-mount application, the second end plate
assembly supplied with the feeder fixture installs onto the end of
the last joiner fixture in the run.
1.
Install alignment shims into leading end of joiner fixture
housing.
a.
Insert shims approximately 1/2” and bend slightly outward
to create binding at steps B and C.
b.
Continue to insert the side shims until the slot reaches the
fixture housing.
c.
Continue to insert the top shim until the slot is only half
visible.
a
a
a
C. FEEDER & JOINER FIXTURES (as required) FOR ROW-MOUNT
APPLICATION ONLY
1.
Install cinching brackets 1/4” from ends of mating fixture
housings with #8 x 1/4” long screws provided. Hand tighten
screws. DO NOT OVER TIGHTEN.
Cinching Bracket
(Female)
Cinching Bracket
(Male)
1/4”
1/4”
Feeder
or joiner
housing
Joiner
housing
Fig. C
Channel
Positions
c:
Slot
half visible
b:
Slot
fully visible
Confirm width gauges are installed
