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Wiremold/ Legrand electrical systems conform to and should be
properly grounded in compliance with requirements of the current
National Electrical Code or codes administered by local authorities.
All electrical products may present a possible shock or fire hazard
if improperly installed or used. Wiremold/ Legrand electrical products
may bear the mark as UL Listed and/or Classified and should
be installed in conformance with current local and/or the National
Electrical Code.
RFB2FC, RFB2-SSFC,
RFB4-SSFC, RFB4-4DBFC
Fire Classified Floor Boxes
INSTALLATION INSTRUCTIONS
Installation Instruction No.: 1 007 419 – August 2008
IMPORTANT: Please read all instructions
before beginning.
Step 1 MEASURE AND LOCATE BOX.
Box must be located over deck valley
directly above thickest region of concrete.
Set in place – do not attach at this time.
Step 2 CUT OPENINGS INTO DECK FOR CONDUIT FEED
Locate and mark center of deck below mid-point of
box mounting plate. Cut a pair of ø 3" [76mm] holes
through deck.
3" [76mm] Diameter
Hole Saw
RFB2-SSFC
RFB2FC
RFB4-SSFC
RFB4-4DBFC
16"
[406mm]
A
B
To REFERENCE
To REFERENCE
15 7/8"
[403mm]
A
B
RFB2FC
RFB2-SSFC RFB4-SSFC RFB4-4DBFC
A 5 1/4" [133mm] 5 1/4" [133mm] 4 1/2" [114mm]
B 5 1/4" [133mm] 5 1/4" [133mm] 5 1/4" [133mm]
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Step 3 ATTACH CONDUIT FEED(S)
Insert conduit feeds to bottom of box and tighten
mounting screws. Reattach Top Cover on housing.
Step 4 MOUNT BOX TO DECK
Align conduit feeds with deck holes and lower onto
deck. Attach with screws or weld.
Attach to Deck with
Screws or weld
Conduit Feed
Tighten Screws
Hole in base
of Floor Box
to accept
Conduit Feed
Step 5A RFB4-SSFC – INSERT TUNNELING BARRIERS
Determine power/communication distribution inside of box and slide tunneling
barrier(s) into slots adjacent to passageway(s). Fit molded housing over baseplate and
attach cover mounting bracket with #10-24x3/16" screws to baseplate.
CAUTION: RFB4-SSFC barriers cannot be altered after concrete pour.
Slide barrier(s) into
channels in bottom
of molded housing
Direction of cable
passge. Barrier must
be omitted to allow
similar services to
pass from end
compartments to
side compartments
Tunneling for (2) Power & (2) Communication Tunneling for (1) Power & (3) Communication or
(3) Power & (1) Communication
Barriers
Passageway
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Step 6 INSTALL CARRIAGE BOLTS
Drill (4) Ø 9/32" [7.1mm] holes through deck using rectangular openings in mounting plate as a
guide. Remove carriage bolts from temporary fasteners and drop through holes. Align rectangular
shaft and seat into plate. Secure carriage bolt in place by bending tab over head of bolt.
2. Remove Carriage Bolt from Mounting
Plate and drop into square opening.
1. Drill Ø 9/32" [7.1mm] hole
through rectangular opening.
3. Pry Tab up over
Screw Head.
4. Secure Carriage Bolt
by bending Tab over
Head of Bolt.
Step 5B RFB4-4DBFC – INSERT TUNNELING BARRIERS
Determine power/communication distribution inside of box and insert tunneling barrier(s) into holes in cover/device
plate mounting bracket. Flatten tip of barrier(s) with hammer to lock in place while installing bracket. Fit molded
housing over baseplate and attach bracket with #10-24x5/8" screws to baseplate
Tunneling for (2) Power & (2) Communication Tunneling for (1) Power & (3) Communication or
(3) Power & (1) Communication
POWER
POWER
DATA
DATA
POWER
POWER
POWER
DATA
Barrier
Barrier
Flatten tip of Barrier projecting
above Cover/Device Plate
Mounting Bracket
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Step 7 ADJUST BOX HEIGHT
Install box cover. Adjust height to screed line.
Step 8 MOUNT FIRE PROTECTION
Slide fire protection flute closure over carriage bolts
projecting below deck surface. Use additional 1"
[25mm] tall board for 3" [76mm] tall deck profiles.
Step 9 INSTALL BOTTOM PAN
Remove knockout tab(s) on bottom pan as required
to allow conduit feed(s) to pass through. Remove
corresponding plug(s) in fire board. Partially thread
(2) toggle nuts onto carriage bolts in opposite corners
for temporary mounting. Align holes in pan and board
over carriage bolts and push over toggle nuts until
wings expand.
Step 10 COMPLETE INSTALLATION
Attach fender washers and wing nuts to remaining two
carriage bolts. Remove (2) temporary toggle nuts and
replace with remaining fender washers and wing nuts.
Tighten until fire board contacts deck.
Slide Insulation over
Carriage Bolts
Flute Closure
Use 1" [25mm] Board
for 3" [76mm] Deck
profiles
Remove knockout
tabs as required
Thread 2 Toggle
Nuts onto end of
Carriage Bolts
(One each corner)
Attach Fender Washer
and Wing Nut onto
Carriage Bolt
NOTE: Toggle Nuts are temporary. Toggle Nuts must
be replaced with a Fender Washer and Wing
Nut to maintain Fire Classification.
CAUTION: Failure to install bottom insulation
will void Fire Classification.
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Step 11 ACTIVATION
S38CCTCAL S38BBTCAL
Flanged S38CCTCBK S38BBTCBK
S38CCTCBS S38BBTCBS
Cut carpet opening 7 3/16" x 6" [183mm x 152mm]. Complete activation following instructions provided
with cover. See list below for available options.
7 3/16"
[183mm]
6"
[152mm]
INSERT LID SOLID LID
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Type RFB2FC, RFB2-SSFC, RFB4-4DBFC and RFB4-SSFC
preset electrical inserts for use with Type FCPAN floor plate kits
in 2-hour fire rated D900 Series Floor-Ceiling designs
constructed with nominal 2" or 3" deep fluted steel floor units
having nominal 5" wide valleys and crests spaced 12" OC. The
Type RFB2-SSFC and RFB4-SSFC preset electrical inserts are
for use with a minimum 3 1/4" [83mm] thickness of structural
concrete topping. The Type RFB2FC and RFB4-4DBFC preset
electrical inserts are for use with a minimum 4-1/2" [114mm]
thickness of structural concrete topping. The assembled preset
electrical insert with floor plate kit and service activation fitting
will not reduce the 2-hour fire rating of the floor assembly when
installed in accordance with the installation instructions
accompanying the preset electrical insert and when the preset
electrical inserts are spaced minimum 2' [0.61m] OC with not
more than one unit per 4 square feet [0.37m
2
] of floor area in
each span.
1. Installation – Mounted on 2" or 3" [51mm or 76mm] deck. For
use with up to (4) 12 AWG Type THHN power conductors or (48)
23 AWG tele/data conductors per gang
Outlet Boxes and Fittings Classified for Fire Resistance Wiremold/ Legrand (R8209)
Step 12 DEVICE PLATES
Use Device Plate supplied. Additional and/or specialty Device Plates are available separately.
For Use on
RFB2-SSFC & RFB2FC
For Use on
RFB4-SSFC
For Use on
RFB4-4DBFC
RFB2DP
RFB2GFI
RFB2B
RFB22AB
RFB2RT
RFB2EXT
RFB-RB-SS
RFB-GFI-SS
RFB-B-SS
RFB-2AB-SS
RFB-2-SSRT
RFB-DR-4DB
RFB-GFI-4DB
RFB-B-4DB
WTB-2-RT
WTB-2-AB
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Wiremold / Legrand
U.S. and International:
60 Woodlawn Street • West Hartford, CT 06110
1-800-621-0049 • FAX 860-232-2062 • Outside U.S.: 860-233-6251
Canada:
570 Applewood Crescent • Vaughan, Ontario L4K 4B4
1-800-723-5175 • FAX 905-738-9721
1 007 420 0808
© Copyright 2008 Wiremold / Legrand All Rights Reserved
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