Notifier AFP-300 Installation Manual page 181

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AFP-300/AFP-400 Installation PN 50253:C1 05/22/97
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Each type of circuit within the Fire Alarm Control System requires use of a specific
wire type to ensure proper circuit operation. The wire gauge of a particular circuit
depends on the length of that circuit. Use Table B-1 to determine the specific wiring
requirements for each circuit.
Compliance with the Federal Communications Commission (FCC) and Canadian
Department of Communication regulations on electrical energy radiation requires the
following: Use twisted-pair shielded wire for any wiring entering or exiting the
AFP-300/AFP-400 cabinet that is not enclosed in conduit.
Circuit
Circuit Type
Function
SLC Loop Connects to
(power- intelligent and
limited addressable
modules.
EIA-485 Connects to
(power- LCD-80 or to
limited) Annunciator
Control System
(ACS) modules
EIA-232 Connects to
(power- PRN, P40
limited) Remote Printers,
CRT, or PC.
MMX-1, Initiating Device
MMX-101 Circuit (IDC)
(power-
limited)
CMX Notification
(power- Appliance
limited) Circuit (NAC)
24 VDC To annunciators
Power and CMX
Runs
(power-
limited)
NR45-24 Remote
Secondary
Power Source
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Distance
Wire Requirements
(feet)
Twisted-shielded pair, 12 10,000
to 18 AWG. 40 ohms, 8,000
maximum per length of 4,875
Style 6 and 7 loops. 3,225
40 ohms per branch
maximum for Style 4
loops.
1,000
Untwisted, unshielded
wire, in conduit or
outside of conduit.
Twisted-shielded pair 6,000 (max)
with a characteristic
impedance of 120 ohms.
18 AWG minimum.
Twisted-shielded pair. 50 (without
18 AWG minimum. modem)
12-18 AWG. Maximum To meet 20
circuit resistance is ohms
20 ohms.
12-18 AWG. MPS-24A: To meet
At alarm current level, 1.2 V drop,
no more than a 1.2 V or sized to
drop at the end of the provide the
circuit, or sized to minimum
provide the minimum rated
rated operating voltage operating
of the appliances used. voltage of the
appliances
used.
12-18 AWG. Size wire To meet 1.2
so that no more than volt drop
1.2 V drop across wire
run from supply source
to end of any branch.
12 AWG in conduit. 20 (max)
Typical Wire Type
12 AWG Belden 9583 WPW 999
14 AWG Belden 9581 WPW 995
16 AWG Belden 9575 WPW 991
18 AWG Belden 9574 WPW 975
18-12 AWG
Belden 9860 (16 AWG)
Belden 9860 (16 AWG)
12-18 AWG
12-18 AWG
12-18 AWG
12 AWG
B-1