VC201 Keypad functions
Volume level
indicator for
this room only
Room power on and
volume up button
Mute button (volume
level led blinks)
systems
Infrared signal
receiver
(VC201ionly)
Room power on,
volume down and
all room power off
button (hold down
button for three led
blinks)
VC224pm
VC226pm
System status led and
infrared signal confirming
led (VC201i only)
Limited Warranty
Digital Four or Six Room
Knöll Systems warrants VC224pm and VC226pm systems sold in the USA or Canada
by authorized Knöll dealers to be free from defects in materials and workmanship.
This warranty extends for three full years from the date of purchase by the
consumer. Any products returned freight prepaid to Knöll Systems and found to be
defective by Knöll Systems within the warranty period will be repaired or replaced
at Knöll Systems option, at no charge. Knöll Systems will not be responsible for the
actual cost of installation or removal of the product, nor for any consequential or
incidental damages. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion may not
apply to you. This warranty gives you specific legal rights. You may have additional
rights which vary from state to state. Knöll products sold outside of the USA and
Canada may be covered by warranties provided by an authorized Knöll distributor.
Stereo Volume Control System
INSTALLATION
AND OPERATION
MANUAL
Please contact the distributor in the country that the Knöll product was purchased.
* DMS, Powermatch, Transformer free and Digicom
are trademarks of Knöll Systems
Printed in Canada
Knöll Systems, Richmond, BC & Point Roberts WA
C COPYRIGHT 1998-2003, Knöll Systems, All Rights Reserved
Knöll Systems
tel (604) 272-4555
fax (604) 272-5595
In America:
In Canada:
145 Tyee Drive
11791 Machrina Way #120
Point Roberts, WA 98281 Richmond, B.C. V7A 4V3
Version 1.4
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Installation
Cat wires from rooms with more than one VC201 are run from one VC201 to
the other then home run back to the controller.
Installing the digital volume control system should be relatively
easy. With a bit of planning, it will give trouble free service
for years.
It is very important to use a top quality RJ45 8/8
crimper tool. We strongly suggest using a cat 5
RJ45 electronic tester to verify the wire conductors.
Basic System Layout and Pre-Wiring: See “Typical Wiring Diagram” on
the centerfold page. The VC224pm and VC226pm make a noticeable “click”
sound when changing volumes. We suggest mounting it in a low voltage panel,
electrical room, closet, etc. We do not suggest connecting more than one
VC224pm or VC226pm to a single amplifier or receiver, even if it is a high
power model because a variety of power sharing problems can occur.
One or two VC201 keypads can work on a single room or zone but only one
VC201i can be connected to a single VC224pm or VC226pm room or zone.
The VC200 keypad does not work with this system.
Connection to Stereo Equipment:Remove the VC224pm orVC226pm green
four-position speaker connector labelled "INPUT". The stereo amplifier or
receiver outputs (left and right) are connected to this VC224pm or VC226pm
connector. Be very careful to observe the correct polarity. This controller
uses independent floating grounds so bridged amplifiers can be used safely.
VC224pm and VC226pm controllers are rated for
use with maximum 120 watt per channel amplifiers.
DO NOT use higher-powered amplifiers with this
product for safety reasons.
Use the standard T568A wiring practices to run a cat 5 or cat 3 wire from
the keypad or controller to the VC224pm or Vc226pm. If more than one
keypad controls a single VC224pm or Vc226pm room, daisy chain the cat
wire from keypad to keypad. If the VC226pmi is notlocated next to the
stereo, run a single eight-conductor cat 3 or cat 5 wire run and four
speaker wire conductors from the stereo to the controller for the power
supply, the infrared system, future upgrades such as paging override and of
course the steeo speaker sound.
The amplifier or receiver must be rated for four ohm speaker use to work
properly with the VC224pm or VC226pm controller. Connect the controller
to the amp or receivers speaker A or speaker B terminals. Wire the VC224pm
or VC226pm connectors labelled “ROOM1", "ROOM2" etc. directly to the
correct room speakers, again strictly observing polarity.
From each speaker run a home run fire ratedtwo-conductor speaker wire
to the VC224pm or VC226pm. To save time and money, most installers run a
four-conductor speaker wire from the VC224pm or VC226pm to the closest
appropriate speaker and then run a short two-conductor speaker wire to
the other speaker. If there is more than one pair of speakers connected to
a single VC224pm or VC226pm zone, the speakers can be wired in series or
parallel whichever makes the impedance closest to 4 or 8 ohms. Do not
attemptto make the final combined speaker impedance less than 4 ohms.
Power Requirements: The VC224pm and VC226pm are shipped with a 12VDC
500mA (or more) power supply (supplies power to the keypads). If possible,
connect the 12vdc power supply to the switched outlet on the rear of the
amplifier or receiver. This wiring causes the VC224pm or VC226pm
controller to reset to its selectable “boot up” every time the receiver or
amplifier is turned on but when the power is off the IR section of the
VC201i will not work. If the IR is required to work all the time, then the
controller power supply must connected to an unswitched outlet.
Connecting VC201/VC201i keypads to VC224pm and VC226pm controllers:
Use a single cat5 wire using all eight conductors (usually run inside a wall).
Always use standard T568A Cat 5 wiring practices (shown below). Use the
correct wire pairs. Polarity is VERY important! The stereo signal is not
routed to the keypad, just the digital control signals. Signals from an
infrared receiver (if used) are routed down the same Cat 5 wire. If more
than one keypad (VC201, not VC201i) is to be connected to a VC224pm or
VC226pm controller, the wires to the keypads are paralleled. continued..
Installer Selectable “BOOT UP”: The VC224pm and VC226pm allow the
installer to select how the volume control “boots up” in each room when the
controller first receives 12vdc power. For this feature to work, be sure to
plug the 12vdc power supply to the switched AC outlet on the rear of the
receiver or amplifier. Please note #6/12 and S/Mute labels are inverted
on zones 2, 4 and 6 on the version 1.3 board.
To always Start MUTEed make sure the shunt on the right side of the
controller room number labelled “S/MUTE” is in place. Remove this shunt and
this room starts with the music on.
brown 8
white/brown 7
orange 6
white/blue 5
blue 4
To always start up in a quiet position #6 (of 17) sure the shunt on the right
side of the controller room number labelled “# 6/12” is in place. Remove this
shunt if this room is to start in the louder position #12.
white/orange 3
green 2
white/green 1
To restore the boot up defaults, replace the appropriate room shunts.
3
6
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VC224pm and VC226pm typical wiring diagram
Power supply.
Connect to the
switched oulet on
the receiver or
amplifier if
To have a room or zone
start with the music
onwhentheVC226pm
powersup, removethe
shuntlabelled
possible
S/MUTE. Otherwise
the keypad has to be
pushedorremote
One or two VC201
keypadsorone
VC201ikeypadcan
control each rooms
stereospeakers.
Connect the one or
two VC201 or one
VC201i keypad to
the VC226pm
touched to turn on this
roomonly.
VC226pm Cabinet
Whenthesounddoes
comeon(whetheror
not S/MUTE is
selected)thesound
always comes on in
position #6 (of 17
total). To make the
music start in this
room only at position
#12, removetheshunt
labelled#6/12.
Labeled wrong on version 1.3
cabinet's correct
RJ45 8 conductor
connector using a
home run of cat 5
wire. Be sure to
use a good quality
RJ45 8/8 crimper.
IR OUT
12VDC
INPUT ROOM1 ROOM2
ROOM3 ROOM4
ROOM5 ROOM6
Homerun
fourconductor
speaker wire
Homerun
12vdc 500mA
Connectthe
power amplifier's
speakeroutputs
totheVC226pm
jacklabelled
cat 5 wire
"INPUT"
Make sure proper
wire polarity is
observed.
120 WATT
MAXIMUM
STEREO
VC201Keypad
4-16 OHMS
IR55
VC201Keypad
Speakers
ROOM #1
Infraredconnection
module to emitters
AMPLIFIER
ROOM #6
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