Legrand FD User Manual download pdf

GENERAL:

1. Review and become familiar with all flushduct components. Be careful of sharp edges or burrs when handling any sheet metal

parts. All interior surfaces that can be touched by a wire shall be smooth.

2. Compare and coordinate the architectural and electrical drawings with the Wiremold/ Legrand installation drawings. Contact

your local Wiremold field sales representative immediately if any dimensions or details are incorrect.

3. On arrival, check the shipment for shortages or damage. Contact your local Wiremold field sales representative immediately if

there are any problems. File a freight claim for any damage directly with the carrier. Keep material and cartons dry.

4. Install duct and related components in accordance with Article 354 of the latest issue of the National Electrical Code.

5. Wiremold/ Legrand recommends a vapor barrier be provided when duct is installed directly on grade. This barrier

prevents ground moisture from reaching the underside of the concrete slab through capillary action. This barrier would be

placed below any infloor distribution system.

Flushduct

Duct &

Junction Boxes

INSTALLATION INSTRUCTIONS

Installation Instruction No.: IBO169R1 – Updated May 2006

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.

IMPORTANT: Please read all instructions

before beginning.

DUCT:

1. Flushduct is manufactured in three sizes:

a. Single – 3 1/8" [79mm] wide and 1 1/4" [32mm] deep.

b. Double – 2 single ducts welded side by side 6 1/4" [159mm] wide and 1 1/4" [32mm] deep.

c. Triple – 3 single ducts welded side by side 9 3/8" [238mm] wide and 1 1/4" [32mm] deep.

2. The largest conductor to be installed in either duct shall be 1/0.

Approx. Area Allowable Number of

Sq. In. Wires/Cables*

#2 Duct

Tele/Data Cables

2 pr. phone, Area = .0154 86

4 pr. phone, Area = .0380 35

Type 1 shielded twisted pr., Area = .1194 11

Coaxial, Area = .0460 29

25 pr. phone, Area = .1320 10

Power Conductors

#12 THHN, Area = .0133 100

#10 THHN, Area = .0211 63

# 8 THHN, Area = .0366 36

1/0 Cable, Area = .1855 7

WIRE FILL CAPACITY CHART

* Capacities based on 40% wire fill allowed by the National Electrical Code. At the 40% fill,

duct will be crowded and wire pulling may be difficult. When transiting through junction

boxes, around turns, and through inserts, wires will take up more space. A 20% wire fill at

these locations will allow easier fishing and pulling of cables.

3. Factory punched openings are threaded 1 5/8-18. For installation of screw plugs only. Only 455F Series can be installed in

this opening, or also in 1 5/8 straight through holes cut in the field..

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Summary of Contents

Page 1 - Junction Boxes

GENERAL:1. Review and become familiar with all flushduct components. Be careful of sharp edges or burrs when handling any sheet metalparts. All interi

Page 2 - FLUSHDUCT JUNCTION BOX:

2FLUSHDUCT JUNCTION BOX: 1. Single Flushduct — Cat. No. 12FBThis box accommodates a single Flushduct on each side. The box has corner conduit openings

Page 3 - Leveling Junction Boxes

33. Installing the Ducta. After the junction boxes are roughed in, position duct supports or couplings and lay the duct in place (See Steps 5 & 6)

Page 4

47. Work Subsequent to Underfloor Duct Installation by Other Contractorsa. Concrete Placement and Curing1. Reinforced concrete design shall be in acco

Page 5 - FLUSHDUCT SYSTEM LAYOUT

51469735111282101 3222FST Triple Flushduct w/1 5/8" [41mm] staggered openings on 24" centers2 3222F-O Triple Blank Flushduct3 12F-O Single B

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