ADEMCO Vista-128FB Setup Guide Page 30

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VISTA-128BP/VISTA-250BP Installation and Setup Guide
3-2
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 panel’s 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
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