Shelf-Mounting: The hubs can lie flat on a shelf, when appropriate
in a given installation. Though the hubs typically run cool,
adequate space should always be provided for airflow. Never
place any object on top of a hub when shelf-mounted. Utilize
the space created by the mounting flange for running wires
underneath the hubs, when appropriate.
Wall-Mounting: The hubs can be mounted on an equipment cabinet
or wall surface. Drill small starter holes, using the hub-mounting
screw holes for alignment. Sink mounting screws into wall studs
when possible or mount a sheet of plywood slightly larger than
the area required for the hubs to the wall surface, to ensure firm
attachment. Leave several inches vertically between hubs, for
pulling wires and making connections. Utilize the space created
by the mounting flange for running wires underneath the hubs,
when appropriate.
Panel-Mounting: The mounting screw holes on the AVH21 and
WPS21 hub flanges are configured for use with two popular
brands of structured wiring panels: the Channel Vision C-0128E
and Leviton Cat: 47605-28W. (These specific models will each
accept three hubs.) Hubs can mount to either hole pattern, using
standard nuts and bolts or the supplied locking pins.
KP21
The KP21 keypads must be mounted in standard two-gang electrical
or low-voltage J-boxes in the Remote Rooms. Keypads are typically
mounted at the entrance to a room near the light switch and
other room controls. NEVER MOUNT A KEYPAD IN THE SAME
J-BOX WITH A LIGHT SWITCH OR OTHER HIGH-VOLTAGE DEVICE.
The approved boxes are:
I Carlon BH235A (new work, closed box)
I Carlon BH234R (retrofit, closed box)
I Carlon SC200A (new work, open frame)
Pre-Wire
As part of system planning, full consideration should be given to
the wiring infrastructure that will be required to utilize the maxi-
mum capabilities of the Audioaccess W.H.E.N.
Main Room
This section is an overview of the pre-wiring that should be done
during construction and prior to installation for the Main Room
section of the system.
AVR21EN
Speakers (Front, Side, Rear)
Pull quality, 16AWG, two-conductor stranded speaker wire from
each speaker location to the AVR21EN. Each paired run (front
right/left; side right/left; rear right/left) should be equal lengths
to help ensure proper audio reproduction. Example: If the system
components are installed on one side of the room and the front
right speaker requires a 10-foot run, but the front left speaker
requires a 20-foot run, both front speakers should have runs of
20 feet.
Remote Rooms
The AVR21EN has a special multiroom link that provides a network
connection to the AVH21 audio/video hubs via Cat. 5e cable. The
multiroom link feeds digital audio to the AVH21s for distribution
to the KP21 keypads and receives control signals from the remote
rooms for zone, source and system control. Each AVH21 requires a
WPS21 power hub. The WPS21 provides individual power terminals
to provide power to the AVH21 A/V hub and each of the keypads
connected to that AVH21. Up to three AVH21/WPS21 sets can be
used in a system for a maximum of 20 remote zones.
The AVR21EN also provides a dedicated composite video output
for each source that gets connected to the AVH21s via RG6 coaxial
cable terminated with F connectors.
When using multiple hubs, the multiroom link and video
connections are “daisy-chained” from one hub to the next. The
AVR21EN is connected to Hub 1 for Zones 1–7. Hub 1 is daisy-
chained to Hub 2 for Zones 8–14, and Hub 2 is daisy-chained to
Hub 3 for Zones 15–20.
One of the great features of the W.H.E.N. architecture is that the
hubs can be installed just about anywhere. They can be installed
in a utility area with structured wiring panels where the
cable/satellite TV enters the home – up to 300 feet away from
the AVR21EN. In other installations it may be more convenient to
mount the hubs in the same location as the AVR21EN and source
components, when installed in an equipment rack or closet.
The KP21 keypads have both line-level audio in and out connec-
tions. With input from the client, additional wiring may be
required to connect a local audio source such as a DVD/CD player,
video game or cable/satellite receiver. The variable line-level out
may be used to incorporate a local high-power amplifier or pow-
ered subwoofer. Permanent connection from the keypads to wall
plates may also be a consideration, making these in/outs available
for use at a future time.
Given the layout of some rooms, the keypad location may be
behind the user when sitting on a couch or chair. In these situations,
an external IR receiver can be connected to the KP21 keypad. By
mounting the IR receiver at the “focal point” of the room (i.e., the
wall where the video display and speakers are located), the user can
control the system with a KP21R remote without having to point
back over his or her shoulder to use the eye on the keypad.
When designing the system, work closely with the homeowners to
determine room layout, so speaker and video display placement
can be set, and with that, keypad, IR receiver, speaker and video
wiring can be properly planned and installed.
Mounting and Back Box Options
AVH21 and WPS21
Leave at least 3" between hubs for airflow and space for making
connections. Though the hubs typically run cool, do not block any
of the vent holes, as this can cause damage from overheating.
The AVH21s and WPS21s can be wall-mounted or installed in the
following optional-approved structured wiring boxes:
I Channel Vision C-0128E
I Leviton 47605-28W
10
System Planning
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