Legrand RFB4 User Manual

RFB Recessed Floor Box

Legrand/Wiremold 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. Legrand/Wiremold electrical products may bear the mark of a Nationally Recognized Testing Laboratory (NRTL) and should be installed in conformance with current local and/or the National Electrical Code.

I N S T A L L A T I O N I N S T R U C T I O N S

Installation Instruction No.: 1 002 639 R5 – Updated June 2012

Products Covered: RFB4, RFB4-CI-1, RFB4-CI-NA, RFB4-4DB, RFB4-SS

RFB4 Recessed Floor Box –

Step 1 Determine box location and conduit layout. Remove

knockouts and attach proper conduit adapters (sold separately) to steel base.

Step 3 Insert combination bracket inside of housing. Mount to

base with four #10-24 x 5/8" [15.9mm] Phillips drive machine screws. If compartments (A) and (B) are used for different services, then one or both tunnel blocks must be pressed into the combination bracket to block the passage of wires between the two compartments. If pass-through is required between compartments (A) and (B), tunnel blocks are not needed. Pass-through is available only between compartments (A) and (B).

Step 4 Secure box to subfloor using wire or nails through the slot adjacent

to the adjusting screws. Once positioned, connect conduit to adapters.

Step 5 Leave receptacle brackets in shrink wrapping and inside box until

concrete is set and receptacles are ready to be installed.

Step 6 Insert unused tunnel blocks into fingers of combination bracket.

Place brackets in box and insert mudcap on top of blocks.

Before Concrete Pour:

IMPORTANT: Please read all instructions

before beginning.

Step 2 Slip housing over base. Using the adjusting screws provided

and adjust box so that top is 1/16" [1.6mm] below screed line.

Adjusting Screws

Step 3

Tunnel Blocks

Step 4

Compartment A

Compartment B

WARNING: Pour concrete to 1/16" [1.6mm] above box

housing. Pours of 1/4" [6.4mm] or more over box housing will make it difficult to breakout the mudcap and cause excessive spalling.

RFB4 Recessed Floor Box –

Step 7 Locate box and chip away concrete located in

After Concrete Pour:

mudcap. Remove mudcap and device plates. Remove tunnelblocks from the combination bracket fingers. Clean out any debris. If concrete does not break cleanly around preset, the activation might not be properly supported. If edges of FloorPort

™

Series Activations are not supported by concrete on all sides, repair of excessive concrete spalling is required.

Step 8 Wire devices (not included) in accordance with the National Electrical Code or any

local code that applies. Make sure that any ground leads are connected to ground

crews. Attach the receptacle to the receptacle mounting bracket using #6-32 screw

s provided. Attach the receptacles to the receptacle mounting brackets with two additional screws and nuts (not provided). Attach the receptacle mounting bracket to the combination bracket using two #10-24 mounting screws provided.

Step 9 Complete procedure by installing a FloorPort Series Activation (sold separately)

using the installation instructions provided with the unit. instructions provided with the unit.

This box and activation are UL Listed for use with tile, terrazzo, and carpet floors.

Use insulator provided with the following catalog numbers:

RFB-GFI, CIHT-GFI, RFB-GFI-SS, RFB-GFI-4DB.

Insulator

RFB4-4DB Recessed Floor Box –

Before Concrete Pour:

Step 1 Remove knockouts and attach conduit to base using proper conduit adapters

(not supplied).

Step 2 Slip housing over base. Using the adjusting screws provided adjust box so that

top is 1/16" [1.6mm] below screed line.

Step 3 Once positioned, connect conduit to adapters and anchor box to the subfloor by

wire or nails through the slot adjacent to the adjusting screws.

Step 4 If all four compartments are not being used for single service, tunnel blocks may

be installed to provide service isolation when feedback through wiring is not required (see Tunnel Block Arrangements Illustration).

Step 5 Insert combination bracket inside of housing and mount to base with four #10-24

x 5/8" [15.9mm] machine screws.

Step 6 Leave receptacle brackets in shrink wrapping until concrete is set and receptacles

are ready to be installed.

Step 7 Insert unused tunnel blocks inside of box and insert mudcap.

WARNING: Pour concrete to 1/16" [1.6mm] above box housing. Pours of

WARNING: Compartments for power applications must be configured to

RFB4-4DB Recessed Floor Box –

1/4" [6.4mm] or more over box housing will make it difficult to breakout the mudcap and cause excessive spalling.

allow either direct access or via tunneling to one of the two grounding screws in either compartment.

After Concrete Pour:

Step 1 Locate box and chip away concrete located in mudcap. Remove

mudcap and unused tunnel blocks. Clean out any debris.

tep 2 Attach receptacles (not supplied) to the receptacle brackets, using

#6-32 screw provided. Attach the receptacles to the receptacle mounting brackets with two additional screws and nuts (not provided). Wire devices (not included) in accordance with the National Electrical Code or any local code that applies. Make sure that any ground leads are connected to ground screws before securing receptacle brackets using #6-32 x 3/8" [9.5mm] R.H.M.S.

Step 3 Complete procedure by installing a FloorPort Series Activation

WARNING: If concrete does not break cleanly around preset,

using the instructions provided with the unit.

Tunnel Block (See Step Four)

Adjusting Screw

Possible Tunnel Block Arrangements

the activation might not be properly supported. If edges of FloorPort Activations are not supported by concrete on all sides, repair of excessive concrete spalling is required.

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