Extron MR D Series Installation guide

MR and MR D Series Installation Guide

This guide provides procedures for installing and modifying the Extron MR (standard) and MR D (Decora ® ) series plastic mounting brackets (mud rings).

Mud Ring Components

Each mud ring kit includes an expansion kit consisting of two small top/bottom segments that allow the bracket to be enlarged or reduced to the next larger or smaller gang size. (See “Modifying a Mud

Ring,” on the next page.)

Figure 1 shows the parts of the

MR/MR D mud rings.

Device Mount

Screw Hole

Segment

Assembly

Screw

Top/bottom

Segment

Dogleg

Assembly

Side

Segment

Surface Mount

Screw Hole

Top/bottom

Segment

Installation

Figure 1 — MR mud ring elements

Determining the installation location

The UL-listed MR series mud rings do not need to be fastened to wall studs, so they can be placed almost anywhere on a wall or other mounting surface. When you are deciding where to install the device and mud ring, consider the placement of the cable(s) and access. You may need to install the cables before you install the bracket.

N

W

The mud rings fit properly in hollow wall thicknesses ranging from 1/4" (0.63 cm) to 1” (2.5 cm).

The MR series mud rings are UL-listed for low-voltage applications only.

Preparing the site and installing the mud ring using the doglegs

1.

See the to-scale cutout template included with the mud ring to determine the cutout dimensions for your mud ring.

Tear the cutout template along the perforations for the appropriate mud ring size.

2.

Place the template against the surface to be cut, using a level, if necessary, to keep the template even. Trace around the template.

3.

Carefully cut away the mounting surface material inside the traced template lines.

4.

Test the fit of the mud ring. The doglegs should fit easily into the hole and the flat portion should rest flush against the wall.

See the note in figure 2, at right.

NOTE Do not disassemble the dogleg from the dogleg screw. Rotate the dogleg out of the way to insert the mud ring into the wall.

5.

Rotate all doglegs inward.

6 . Insert the mud ring into the hole.

Dogleg

Screw

7.

Tighten all of the dogleg screws until the doglegs clamp the mud ring to the mounting surface. Do not overtighten.

Extron

MR 200D

Modular Mud Ring

Standard mud rings only: If you are going to screw the mud ring to the surface, rather than using the detachable doglegs, mark the four surface mounting screw holes at the corners of the mud ring. See figure 2, at right.

Rotate doglegs and insert mud ring into wall opening.

Surface Mounting

Hole

Equipment Mounting

Holes

Figure 2 — Installing an MR mud ring

68-1190-01 Rev. D

03 08

MR and MR D Series Installation Guide

Modifying a Mud Ring

Each mud ring size can be modified to make the mud ring one gang-size larger or smaller (figure 3). You can resize the mud ring by either adding a top and bottom segment, removing a top and bottom segment (2- through 7-gang size only), or replacing one size top and bottom segment with another.

Segment Assembly Screws

Small Top/bottom Segment

MR 200 2-gang Mud Ring

2 Small Top/bottom Segments

2 Small Top/bottom

Segments

MR 200

Modified to be 3-gang Mud Ring

Figure 3 — Modifying an MR mud ring

N The 1-gang mud ring cannot be made smaller.

Modify the mud ring as follows:

1 . As necessary, remove the segment assembly screws that hold the segments together, and add, remove, or replace a top segment and a bottom segment.

N For example, to modify an MR 300 to be a 4-gang mud ring, add one small segment on the top and bottom. To modify the same MR 300/MR 300D to be a 2-gang mud ring, replace the large segments on the top and bottom with small segments.

2 . Replace and install new segment assembly screws as necessary.

Part Numbers

The MR/MR D Series mounting brackets (mud rings) are available in the following configurations:

Name

MR 100

MR 100D

MR 200

MR 200D

MR 300

MR 300D

MR 400

MR 500

MR 600

MR 700

Description

1-gang mud ring, black or white

1-gang Decora ® style mud ring, black

2-gang mud ring, black or white

2-gang Decora style mud ring, black

3-gang mud ring, black or white

3-gang Decora style mud ring, black

4-gang mud ring, black or white

5-gang mud ring, black or white

6-gang mud ring, black or white

7-gang mud ring, black or white

Part number

70-519-12 or -13

70-581-12

70-519-22 or -23

70-581-22

70-519-32 or -33

70-581-32

70-519-42 or -43

70-519-52 or -53

70-519-62 or -63

70-519-72 or -73 www.extron.com

Extron Electronics, USA

1230 South Lewis Street

Anaheim, CA 92805

800.633.9876 714.491.1500

FAX 714.491.1517

Extron Electronics, Europe

Beeldschermweg 6C

3821 AH Amersfoort, The Netherlands

+800.3987.6673 +31.33.453.4040

FAX +31.33.453.4050

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135 Joo Seng Rd. #04-01

PM Industrial Bldg., Singapore 368363

+800.7339.8766 +65.6383.4400

FAX +65.6383.4664

© 2008 Extron Electronics. All rights reserved.

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Kyodo Building, 16 Ichibancho

Chiyoda-ku, Tokyo 102-0082

Japan

+81.3.3511.7655 FAX +81.3.3511.7656