ADEMCO Vista-128B PLUS Especificaciones Pagina 25

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Section 3 - Installing the Control
3-7
Wiring 4-Wire Smoke Detectors
U
L
Power to 4-wire smoke detectors must be
supervised with an EOL device (use a System
Sensor A77-716B EOL relay module
connected as shown in
Figure 3-11
).
+
+
+
+
+
HEAT
DETECTOR
4-WIRE
SMOKE
DETECTORS
V128BP-002-V0
NO CONNECTION
C
NC
NO
RESET
RELAY 1, 2, 3, OR 4
4204 RELAY MODULE
NOTES:
· PROGRAM THE RELAY TO
TRANSFER ON FIRE ZONE
RESET (ACTIVATION CODE 54).
SEE 4204 RELAY MODULE
SECTION FOR DETAILS.
· SECOND CODE AND OFF
ENTERED AT CONSOLE
MOMENTARILY INTERRUPTS
DETECTOR POWER.
SHOWN POWERED.
RELAY OPENS WHEN
POWER IS LOST.
EOL POWER
SUPERVISION
RELAY MODULE
A77-716B
2k
EOLR
TO
FIRE ZONE
TERMINALS
TO
AUXILIARY
POWER
TERMINALS
Figure 3-11: 4-Wire Smoke Detectors
To wire 4-wire smoke detectors to zones 1-8, perform
the following steps:
Step Action
1 Select 4-wire smoke detectors (see list of
compatible detectors shown previously in
this section).
2 Connect detectors (including heat detectors,
if used) across terminals of the zone
selected. All detectors must be wired in
parallel. See
Figure 3-11
.
NOTE:
If you are using the J7 output
trigger to reset the smoke detectors, refer to
Smoke Detector Reset
later in this section for
the wiring instructions.
3 Connect the EOLR at the last detector in the
loop across the zones terminals.
You must
connect the EOLR across the loop wires
at the last detector
.
Using Smoke Power Reversal Module
The 333 PRM Polarity Reversing Module is used to
reverse the polarity of the positive and negative
voltages powering smoke detectors. The module is for
use with 4-wire smoke detectors that employ a sounder
and voltage-reversing feature. The module is triggered
by a pulsing bell output.
Smoke Detectors Compatible with the 333PRM
The 333PRM may be used with the System Sensor
2112/24AT and similar models with the required
operating features previously stated.
The 333PRM reverses polarity to smoke
detectors with Integral Temp-3 Sounders.
Typically, in alarm, each draws 49-60mA of
current. The control panel supplies only enough
current for one smoke detector. In order to attach
more than one, an external power supply and an
external relay may be required.
Installing the 333 PRM
Mount the 333 PRM inside the control panels cabinet
or in a separate cabinet using the double-sided tape
provided. Wire the 333PRM as shown in
Figures 3-12a,
b or c.
Refer to the
333PRM Installation Instructions
for detailed information on the installation of the
module.
-
+
-
+
-
+
EOL POWER
SUPERVISION
RELAY MODULE
A77-761B
4-WIRE SMOKE
DETECTORS
2000
OHM
EOLR
TO FIRE ZONE
TERMINALS
HEAT
DETECTOR
+
SHOWN POWERED.
RELAY OPENS WHEN
POWER IS LOST
333PRM-001-V0
333 PRM
7
6
5
4
3
-2
+1
8
JUMPER
P1
NC
MOMENTARY
RESET SWITCH
JUMPER P1 ON
333 MODULE
MUST BE IN
"B" POSITION
FOUR-WIRE DETECTOR CIRCUIT
CONTROL PANEL
746
Figure 3-12a: Wiring a 333PRM to the Control
-
+
-
+
-
+
EOL POWER
SUPERVISION
RELAY MODULE
A77-761B
4-WIRE SMOKE
DETECTORS
2000
OHM
EOLR
TO FIRE ZONE
TERMINALS
HEAT
DETECTOR
+
SHOWN POWERED.
RELAY OPENS WHEN
POWER IS LOST
333PRM-002-V0
333 PRM
7
6
5
4
3
-2
+1
8
JUMPER
NC CNO
P1
JUMPER P1 ON
333 MODULE
MUST BE IN
"B" POSITION
FOUR-WIRE DETECTOR CIRCUIT
4204
CONTROL PANEL
2 3 41 12
76 4
Figure 3-12b: Wiring a 333PRM using a 4204
-
+
-
+
-
+
EOL POWER
SUPERVISION
RELAY MODULE
A77-761B
4-WIRE SMOKE
DETECTORS
2000
OHM
EOLR
TO FIRE ZONE
TERMINALS
HEAT
DETECTOR
+
SHOWN POWERED.
RELAY OPENS WHEN
POWER IS LOST
333PRM-003-V0
POWER
SUPPLY
333 PRM
7
6
5
4
3
+
-2
+1
8
JUMPER
P1
USE A 12VDC,
BATTERY-BACKED,
UL LISTED POWER
SUPPLY.
JUMPER P1 ON
333 MODULE
MUST BE IN
"B" POSITION
FOUR-WIRE DETECTOR CIRCUIT
4204
CONTROL PANEL
234 112
76 4
Figure 3-12c: Wiring a 333PRM using a 4204 and a
Power Supply
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