ADEMCO 4208U
®
Installation and Setup Guide
GENERAL INFORMATION
The ADEMCO 4208U is a V-Plex
®
eight-zone expander for use
with ADEMCO controls that support V-Plex
(polling loop) devices.
Characteristics of this device include:
• Can be optionally powered from the control panel aux. power
supply to reduce the amount of current draw from the polling
loop. NOTE: The 4208U cannot be used with an external
power supply for commercial fire applications.
• Uniquely identifies 8 EOLR supervised zones (all zones use
10k resistors, supplied).
• DIP Switches can be used to set zone numbers or serial
numbers.
• When used in the serial number mode, each serial number in
the selected group can be assigned to any zone number.
• Loops A & B can be programmed for fast (10msec) response.
• Tamper protected.
MOUNTING
1. Power should be disconnected before proceeding.
2.
Be sure to mount the 4208U before making any wiring
connections.
When mounted remotely, tamper protection is required. Holes on
the back of the module’s housing permit it to be mounted
horizontally or vertically. Wires can exit from the side or the
breakout on the back of the housing. To enable tamper protection,
set DIP Switch 8 to OFF and attach the tamper magnet (provided)
(Figure 1) to the module inside cover. Be sure to enable the
expansion zone tamper option at the control (program field ✼24 =
0). If the module’s cover is removed, the magnet attached to the
cover (positioned near the reed switch) will cause a tamper signal
to be sent to the control for every active zone on the 4208U
module. When the installation is complete, install the cover and
affix the Serial Number and Zone Assignment Tables to the inside
cover of the control.
When mounted inside the cabinet with the control, the 4208U
should be mounted horizontally and does not need tamper
protection, provided the cabinet is supervised. Insert two screws
into the raised metal tabs leaving the heads app. 1/8” exposed,
and then hang the 4208U using the two slots on the back.
WIRING
C
E
For CE installations ADEMCO N6361 EMI suppression
bead is required. Refer to the N6361 Installation
Instructions for wire routing instructions.
Polling loop and protection loop wires can be brought in either
through the back or front of the unit by removing the knockouts.
Use 22 gauge twisted pair wire for polling loop connections. All
protection loops use 10k EOL resistors (included). A maximum
resistance of 300 ohms is allowed on protection loops (excluding
EOLR). See Figure 2 for all connections.
Keep in mind that connections to the polling loop are always
required, while power supply connections are optional.
1. INSERT BOTTOM TABS FIRST.
2. ENGAGE TOP WITH CLIP.
4219-002-V0
Figure 1. Tamper Magnet Installation
DIP SWITCH SETTINGS
Serial Number Mode:
In the serial number mode, the DIP Switches on the 4208U are used
to assign the unit to a group of 8 serial numbers. You can assign any
serial number to any zone number (except hardwire zone numbers of
the control) and you do not lose zone numbers if you don’t use all
eight loops on the 4208U. Follow steps below using Table 2 for DIP
Switch settings.
Zone Assignment Mode:
In the zone assignment mode, the DIP Switches on the 4208U are
used to assign the unit to a group of 8 consecutive zones. These
zone numbers, once designated for the 4208U, cannot be used for
anything else, even if you don’t use all 8. Follow the steps below
using Table 1 for DIP Switch settings.
Note: Zone Assignment Mode should only be used on panels that
DO NOT support Serial Mode.
4208U-SOC-V0
1 2 3 4 5
(EACH LOOP’S MAX
RESISTANCE:
300 ohms + 10k EOLR)
7
8
ON
1
DIP Switches
4208U
TB1
REED (TAMPER) SWITCH
1 98765432
10k 10k 10k 10k 10k 10k 10k 10k
LOOPS: A B C D E F G H
121110
( )
(+)
1
2
3
4
TB2
TO POLLING LOOP
(USE TWISTED PAIR)
( ) GND
(+) 12V
OPTIONAL AUX.
POWER INPUT.
SEE NOTE 1.
NOTES:
IF USING AUXILIARY POWER ON COMMECRICAL
FIRE/BURG COMBINATION SYSTEMS
(e.g. VISTA-128FBP), DO NOT CONNECT THE
POLLING LOOP GROUND ON TERMINAL 2.
AUXILIARY POWER CAN ONLY BE USED IN
BURGLARY APPLICATIONS.
FOR CE INSTALLATIONS A N6363 EMI
SUPPRESSION BEAD IS REQUIRED.
1.
2.
Figure 2. Summary of Connections
Note: For Commercial and Residential Fire installations, no more than
one (1) wire per terminal may be connected.
1 2 3 4 5
6
7
ON
ON
OFF
SIDE VIEW
POSITIONS 2-5: SELECT THE 8 SENSOR
DEVICE GROUP ADDRESS
(SHOWN ON, ON, ON,
OFF = 2nd GROUP SELECTION).
POSITION 6:
DEVICE TYPE (SHOWN
ON = “SERIAL NUMBER MODE”).
POSITION 7: NORMALLY SET TO "OFF"
8
ON
1
POSITION 1: SELECT RESPONSE TIME
FOR LOOPS A and B
(SHOWN ON = SLOW).
POSITION 8:
SELECT TAMPER PROTECTION
SETTING (SHOWN
“OFF” = TAMPER ENABLED).
}
4208U-001-V2
Figure 3. DIP Switch Settings
U
L
1. For all fire (NFPA) and UL Commercial Burglary
installations, the 4208U must be tamper protected or
mounted in a tamper-protected cabinet.
2. Refer to the control panel installation instructions for
specific programming/installation requirements.
3. All circuits are supervised and power-limited.
4. Use only 14-22 AWG wire.
5. Close contact type initiating devices.
6. All zones are Class B, Style B.
nes: 11VDC max., 1.5mA max.
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