Field Cabling
Connect field cabling for Detection Zones, Supervised Inputs, Notification Appliance Circuits (NACs),
Relays, and AUX 24V with 14 to 22 AWG wiring. Connect field cabling of the Dialer with 14 to 20 AWG
wiring. Connect field cabling of the AC input with 14 AWG wiring for line, neutral and ground
terminations.
Wiring outside of the fire control panel must not be routed across the fascia-surface of the fire control panel.
Detection Zones
Detection zones of the Sigma A-CP Fire Control Panel provide a nominal 24 VDC for powering
conventional detectors and pull stations. Detection Zones include connections for Z1 (Zone 1), Z1 RET
(Zone 1 Class A, Loop Return) through Z8 (Zone 8).
Detection zones the Sigma A-CP Fire Control Panel are determined by model assignment and Main Board
type. Reference Appendix B, Equipment List for model assignments and Main Board types of the 2, 4 and 8
zone Sigma A-CP Fire Control Panel.
Pull stations authorized for use with the Sigma A-CP Fire Control Panel are non-addressable and UL listed.
Detectors must be wired in a daisy-chain without T-Tap connections. Detection zones are supervised
for open-circuit, short-circuit and ground-fault conditions with the installation of the 6.8K Ohm EOL
resistor, K1896-00. Place the 6.8K Ohm EOL resistor across the last device in the detection zone circuit
to provide this supervision.
Zones of the Sigma A-CP Fire Control Panel operate NFPA 72 Class B, Style C or NFPA 72, Class B, Style
B. Style C devices provide trouble conditions for direct shorts and opens on zone loops. Style B devices
provide alarm conditions for direct shorts and trouble conditions for opens on zone loops.
Change the default operation of Style B to Style C by using the appropriate configuration code. Clear
the configuration code of the fire control panel to provide Style B operation. Set the code to provide
Style C operation.
The table below describes codes for configuring the fire control panel for Zones 1 through 8:
Configuration Code Zone Short Circuit Supervision
71
Zone 1
72
Zone 2
73
Zone 3
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