Appendix D: Wire Requirements - Honeywell NOTIFIER FireWarden-100-2 Instruction Manual

Appendix D: Wire Requirements

T-tapping of the SLC loop wiring is allowed for 2-wire (Style 4) configurations. The total
resistance of any branch cannot exceed 40 ohms. The total wire length of all branches cannot
exceed 10,000 feet (3,000 m).
Connecting external system accessories to the NFW2-100 main circuits must be carefully
considered to ensure proper operation. It is important to use the correct type of wire, wire gauge
and wire run length for each NFW2-100 circuit. Reference the chart below to specify wire
requirements and limitations for each NFW2-100 circuit.
Note: If the SLC loop is to be run in conduit with Notification Appliance Circuits, the risk of
encountering problems can be greatly reduced by exclusively employing electronic sounders (such
as MA/SS-24D) instead of more electronically noisy notification appliances such as
electromechanical bells or horns.
CIRCUIT CONNECTIONS
Circuit Type Circuit Function
SLC loop Connects to
(power-limited) Addressable
Devices
ACS/TERM Connects to
(EIA-485) annunciator
(power-limited) modules
EIA-232 connects to
(power-limited) remote printer
and PC computer
Monitor Module Initiating Device
(power-limited) Circuit
Monitor Module Initiating Device
for 2-wire Circuit
smokes
(power-limited)
Control Module Notification
(power-limited) Appliance
Circuit
24 VDC Connects to
filtered 4-wire smoke
resettable detectors
(power-limited)
24 VDC Connects to
nonresettable control modules,
(power-limited) annunciators and
accessories
CHG-120 or Remote
CHG-75 secondary power
source
* When using untwisted, unshielded wire, full conduit is recommended for optimum EMI/RFI protection.
FireWarden 100-2/E — P/N 52778:A 11/04/2005
Table D.1 NFW2-100 Wire Specifications
Recommended
Wire Type and Limitations Max. Distance
Feet (meters)
Twisted pair, 40 ohms 10,000 (3,000 m)
maximum per length of
Style 6 and 7 loops. 40
8,000 (2,400 m)
ohms per branch maximum
*
for Style 4 loops
4,875 (1,450 m)
3,225 (980 m)
Untwisted, unshielded pair 3,000 (900 m)
Twisted, shielded pair with a 6,000 (1,800 m)
characteristic impedance of
120 ohms
Twisted, shielded pair 50 (15 m)
Maximum loop wire 2,500 (760 m)
resistance is 40 ohms for the
Monitor Module and 20
ohms for the mini-module
No more than a 2.4 volt drop 2,500 (760 m)
allowed at end of circuit.
Maximum loop wire
resistance is 25 ohms
In alarm, no more than a 1.2 Distance limitation
volt drop allowed at end of set by 1.2 volt
circuit maximum line
drop
No more than 1.2 volt drop Distance limitation
allowed from supply source set by 1.2 volt
to end of any branch maximum line
drop
No more than 1.2 volt drop Distance limitation
allowed from supply source set by 1.2 volt
to end of any branch maximum line
drop
20 (6 m)
2
12 AWG (3.25 mm ) in
conduit
WIRE REQUIREMENTS
Wire Gauge and Compatible Brands
12 AWG (3.1 mm
WG-4515, Belden 5020UL, 6020UL
14 AWG (2.00 mm
WG-4513, Belden 5120UL, 6120UL
16 AWG (1.30 mm
WG-4511, Belden 5220UL, 6220UL
18 AWG (0.78 mm
WG-4506, Belden 5320UL, 6320UL
12-18 AWG (3.25 - 0.75 mm
18 AWG (0.75 mm
18 AWG (0.75 mm
12-18 AWG (3.25 - 0.75 mm
12-18 AWG (3.25 - 0.75 mm
12-18 AWG (3.25 - 0.75 mm
12-18 AWG (3.25 - 0.75 mm
12-18 AWG (3.25 - 0.75 mm
12-18 AWG (3.25 - 0.75 mm
2
): Genesis WG-4315,
2
):Genesis WG-4313,
2
): Genesis WG-4311,
2
): Genesis WG-4306,
2
)
2
)
2
) minimum
2
)
2
)
2
)
2
)
2
)
2
)
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