
VISTA-50P/VISTA-50PUL Installation and Setup Guide
3-10
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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 3-14: Wiring a 333PRM using a 4204 and a Power Supply
Using 2-Wire Latching Glassbreaks on Zone 8
Zone 8 can support 2-wire glassbreak detectors. The
zone provides enough standby current to power up to 50
2-wire glassbreak detectors meeting the requirements
listed below.
Compatible Glassbreak Detectors
Use detectors that meet the following ratings:
Standby
Voltage:
5VDC–13.8VDC
Standby
Resistance:
Greater than 20k ohms (equivalent
resistance of all detectors in parallel)
Alarm
Resistance:
Less than 1.1k ohms (see note below)
Alarm
Current:
2mA–10mA
Reset Time:
Less than 6 seconds
NOTES:
• You can use detectors that exceed 1.1k ohms in
alarm, provided they maintain a voltage drop of
less than 3.8 volts in alarm.
• The ASC-SS1 detector has been tested and found to
be compatible with these ratings.
21
22
GLASSBREAK
DETECTOR
ZONE 8
(+)
(-)
LATCHING TYPE GLASS
BREAK DETECTOR LOOP
2000
OHMS
EOLR
Figure 3-15: Wiring Latching Glassbreaks to Zone 8
• The alarm current provided by zone 8
supports only one glassbreak detector in
the alarmed state.
• Do not use other N.O. or N.C. contacts
when using glassbreak detectors on zone
8. Other contacts may prevent proper
glassbreak detector operation.
To wire 2-wire latching glassbreak detectors to zone 8,
perform the following steps:
Step Action
1 Select compatible 2-wire glassbreak
detectors that meet the requirements stated
previously.
2 Connect detectors across zone 8 (terminals
21 and 22). See Figure 3-15.
3 Connect the EOL resistor at the last detector
in the loop across the zone’s terminals. You
must connect the EOL resistor across
the loop wires at the last detector.
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