Earth Detection
Source - Connection shall be made to an approved dedicated earth connection per NEC Article 250 (NFPA 70).
Wiring -Use 14AWG wire.
Alarm-Initiating Device Wiring
Alarm-initiating devices - Manual pull stations, automatic heat detectors and automatic smoke detectors.
Wiring - Four circuits with two wires per circuit. Each circuit terminates with a 3.3K end-of-line resistor. Use 18AWG
to 14AWG wire.
Note: If using 4-wire detectors, refer to Step 4 (page 9). The “RMT +I’ output used can supply up to 500MA of
filtered, regulated 24VDC.
Max. loop line resistance for each circuit is 50 ohms if P-wire detectors are used.
Alarm-Notification Appliance Wiring
Afarm-notification appliances - Horns, bells and visual units.
Wiring - 2-wire circuit terminating with a 1 OK end-of-line resistor. Use 18AWG to 14AWG wire.
Note: Because the system’s total signal power is 2A, the number of notification appliances and the wire length that
can be used in the notification circuit is limited. Refer to Table 1 to determine the maximum number of
notification appliances and the total wire length that can be used in the notification circuit.
TABLE 1
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