ZUMMESH-NETBRIDGE
Buttons
ZUMMESH-JBOX-FMKT-CP
Chicago Plenum Enclosure for Zūm™ Wireless J-Box Devices
The Crestron® ZUMMESH-JBOX-FMKT-CP is an air-tight, Chicago Plenum compliant
enclosure that is designed to secure a Zūm™ wireless J-Box device. The enclosure has an
integrated divider that separates Class 1 and Class 2 wiring and provides a 1/2 in. knockout
to secure the Zūm J-Box device.
Check the Box
Item Qty
ZUMMESH-JBOX-FMKT-CP 1
Plastic Cover, Box, Chicago Plenum, 7 in. x 7 in. (P/N 2053337) 1
Washer, Lock, #8 (P/N 2007673) 2
Screw, 08-32 x 1/2 in., Undercut Head, Flat, Phillips, Zinc Plated,
Steel, White (P/N 2053996)
4
Install the ZUMMESH-JBOX-FMKT-CP
To install the ZUMMESH-JBOX-FMKT-CP, the enclosure must be mounted in the plenum
space, the Zūm J-Box device must be secured in the enclosure and properly wired, and the
plastic cover must be installed.
Secure the Enclosure in the Chicago Plenum
Secure the enclosure to a stud, hanger, or conduit. Dimples are placed on the bottom of the
enclosure to prevent drill bits from walking when drilling holes in the enclosure.
The opening of the enclosure must be located in the room, outside of the plenum space.
NOTE: The enclosure must be mounted so that the open edge of the box is flush to the drop
ceiling panel on the room side or protruding slightly into the room.
Install the Zūm J-Box Device in the Enclosure.
A metal divider with a 1/2 in. knockout is used to secure the Zūm J-Box device in the
enclosure.
NOTE: The metal divider is welded in place and must not be removed under any
circumstance.
1. Insert the wires and threaded plastic of the Zūm J-Box device through the
1/2 in. knockout in the metal divider.
2. Secure the Zūm J-Box device to the metal divider with a conduit nut (supplied with the
Zūm J-Box device). For optimal wireless communication, orient the Zūm J-Box device
as indicated below.
• When a ZUMMESH-NETBRIDGE is used, the J-Box device must be oriented with
the ZUMMESH-NETBRIDGE towards the opening of the enclosure.
• When ZUMMESH-NETBRIDGE is not used, the J-Box device must be oriented with
the SET and TEST buttons away from the opening in the enclosure.
Install a Zūm J-Box device with a
ZUMMESH-NETBRIDGE
Install a Zūm J-Box device without a
ZUMMESH-NETBRIDGE
Wire the Zūm J-Box Device
area only
this area only
NOTES:
• Only knock out the opening intended for use in the installation.
• Partially knocking out any opening will cause the box to no longer be Chicago Plenum
rated.
1. Connect Chicago plenum rated flexible metal conduit to the Class 1 side of the
enclosure. To facilitate wiring, five push-back style, air-tight knockouts are provided on
the Class 1 side of the enclosure; two 3/4 in. knockouts and three 1/2 in. knockouts.
2. Wire the Zūm J-Box device as described in its manual. Refer to the Zūm J-Box device
manual at www.crestron.com/manuals for wiring instructions. The illustration that
follows is for reference only.
NOTE: If necessary, make Class 2 connections between the Zūm J-Box device and
other low-voltage devices. To facilitate wiring, ten push-back style, air-tight knockouts
are provided on the Class 2 side of the enclosure; six 3/4 in. knockouts and four 1/2 in.
knockouts.
3. Connect the ground wire to the ground tab on the divider in the enclosure.
NOTE: The electrical box as well as the equipment installed in the box must be grounded
using the included #8 grounding lock washer, #8-32, 3/8 in. grounding screw, and 18
AWG (minimum) wire that has been terminated with an appropriate ring terminal.
Wire the Zūm J-Box Device - Example
Ground
Connection
Secure the Plastic Cover
Secure the plastic cover to the enclosure using the provided screws.
The cover protrudes 0.125 in. (3 mm) from the surface of the ceiling.
Chicago plenum
rated conduit
(not supplied)
Class 1 wiring
connections in this
Class 2 wiring
connections in
Compliance and Legal
Original Instructions: The U. S. Engl ish version of this document is t he original in stru ctio ns. All other l anguages are a
translation of the original instructions.
Regulatory Model: ZUMMESH-JBOX-FMKT-CP
This pro duct i s Listed to applicabl e UL® Standards and requi rements tested by Und erw riters Laboratorie s Inc.
Ce produit est homologué selon les normes et les exigences UL applicables par Under writers Laboratories Inc.
The product wa rrant y can be fo und at www.crestron.com/warranty.
The spe cific patent s that cover Crestron p roduc ts are l isted at
www.crestron.com/legal/patents.
Additional Information
Scan or click the QR code for detailed product information.
ZUMMESH-JBOX-FMKT-CP
Certa in Cres tron products contain open source s oft ware. For speci fic informat ion, please
visit w ww.crestron.com/opensource.
Crestron, the Crestron logo, and Zūm are either trademark s or registere d trade marks o f Crest ron Ele ctronics, Inc. in t he
United States and/or other countries. UL and the U L logo are either trademarks or registered trademarks o f Under writers
Laboratorie s, Inc . in the United Sta tes and /or other countries. Ot her tra demar ks, re giste red tra demar ks, an d trade n ames
may be us ed in this docum ent to refer to either the e ntiti es claiming th e marks and names or the ir products. Cres tron
discla ims any proprietary interes t in the marks and names of other s. Cres tron is n ot resp onsib le for er rors in t ypography or
photography.
©2019 Crestron Electronics, Inc.
Crestron Electronics, Inc.
15 Volvo Dr ive, Rockleig h, NJ 07647
Tel: 888.CRESTRON
Fax: 201.767.7576
www.crestron.com
Quick Start - Doc. 84 61B
Specifications subject to
change without notice.
(2053755)
08/07/19
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