GE Security Concord 4 Installation Manual

Chapter 2
Installation
21
Figure 8. Polarity reversal module
Connecting 4-wire smoke detectors
Terminal 24 provides power to 4-wire smoke detectors that latch and remain in the alarm state until power
turns off, then restores to the detector. The panel provides this power interruption from terminal 24 (2W SMK
ZONE 8) only when the 2-wire smoke option is on.
Note: The 2-wire smoke feature must be on for smoke detectors to reset after canceling a fire alarm.
Table 7 describes the minimum available panel power. Use only 4-wire smoke detectors that operate at these
power limits. Connect up to five GE smoke detectors input as shown in Figure 7.
Table 7. Minimum available panel power
Minimum voltage Maximum current available
8.3 VDC Up to 30 mA total (combined alarm) current
8.1 VDC Up to 40 mA total (combined alarm) current
7.6 VDC Up to 60 mA total (combined alarm) current
7.1 VDC Up to 80 mA total (combined alarm) current
Output 2
+12V
GND
2W SMK
Zone 8
Polarity reversal module
First detector Last detector
521NCSXT 521NCSXT
2K OHM
EOL resistor
49-454
Part # 406-03

GE Security Concord 4 Specifications

General

Brand	GE Security
Model	Concord 4
Category	Security System
Language	English