4204 4-Wire Smoke Reset; Figure 25: 4-Wire Smoke Detectors - Honeywell VISTA-128BPT Installation And Setup Manual

VISTA-128BPT/128BPT-SIA/250BPT INSTALLATION AND SETUP GUIDE

4204 4-Wire Smoke Reset

This control allows you to put as many 4-wire smoke detectors as can be powered from the panel's Auxiliary Power
output without exceeding the output's rating (750mA). If needed 4-wire smokes may also be powered off an external
power supply. They must occupy an EOL SUPERVISED zone (1 – 8). You can use any UL listed 4-wire smoke detector
that is rated for 10-14VDC operation and that has an alarm reset time not exceeding 6 seconds. Reset can be
accomplished with a programmable relay (4204 or 4101SN) or the onboard J7 Smoke reset trigger.
NOTE: Zone 9 cannot be used for fire.
• NFPA limits the number of 4-wire smoke detectors to 18 per zone.
• Auxiliary power to 4-wire smoke detectors is not automatically reset after an alarm, and therefore must
be momentarily interrupted using either the J7 smoke detector reset output trigger (figure 24) or a 4204
Relay Module.
Compatible 4-Wire Smoke Detectors
Use any UL Listed 4-wire smoke detector that is rated for 10-14VDC operation and that has alarm reset time not
exceeding 6 seconds. Some compatible 4-wire smoke detectors are listed below.
Detector Type
Photoelectric, direct wire
Photoelectric w/heat sensor, direct wire
Wiring 4-Wire Smoke Detectors
Power to 4-wire smoke detectors must be supervised with an EOL device (use a System Sensor EOLR-1
UL
EOL relay module connected as shown in Figure 25).
1. Select 4-wire smoke detectors (see list of compatible detectors shown previously).
2. Connect detectors (including heat detectors, if used) across terminals of the zone selected. All detectors must
be wired in parallel.
NOTE: If you are using the J7 output trigger to reset the smoke detectors, refer to J7 Triggers section (figure
24) for the wiring instructions.
3. Connect the EOLR at the last detector in the loop across the zone's terminals. You must connect the EOLR
across the loop wires at the last detector.
Detector Model #
System Sensor 4W-B
System Sensor 4WT-B

Figure 25: 4-Wire Smoke Detectors

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