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SK SWIFT Wireless Devices–A SWIFT Gateway system supports up to 50 devices: 1 SWIFT Gateway and up to 49 (in any
combination) wireless detectors and monitor modules. Multiple Gateways can be used. See the SWIFT manual P/N LS10036-
001SK-E for more information.
7.5 Wiring Requirements for SLC Devices
The following information applies to all SLC devices. Refer to the section that describes the type of device you are installing for details.
7.5.1 Wire Sizing on 5815XL for SD Devices
The wire can be untwisted, unshielded, solid or stranded as long as it meets the National Electric Code 760-51 requirements for power
limited fire protective signaling cables. Wire distances are computed using copper wire.
Maximum wiring resistance is 50 ohms for SD devices.
Maximum loop length depends on the wire gauge. See Table 7.3 for SD devices.
7.5.2 Wire Sizing for 6815
The SLC requires use of a specific wire type, depending on mode of operation, to ensure proper circuit functioning. Wire size should be
no smaller than 18 AWG and no larger that 12 AWG wire. The wire size depends on the length of the SLC circuit. It is recommended that
all wiring be twisted-pair to minimize the effects of electrical interference
7.5.3 SK Modules
The 6820 or 6820EVS SLC can be programmed to operate in SK mode. While shielded wire is not required, it is recommended that all
SLC wiring be twisted-pair to minimize the effects of electrical interference. Use Table 7.4 to determine the specific wiring requirements
for the SLC.
RECOMMENDED: Twisted-unshielded pair, 12 to
18 AWG (3.31mm to 0.82 MM). 50 ohms,
maximum per length of Style 6 & 7. 50 ohms per
branch maximum for Style 4 loop.
Untwisted, unshielded wire, in conduit or outside of
conduit.
Twisted, shielded pair
Note:
• Shields must be isolated from ground
• Shields should be broken at each device
Note:
Maximum total capacitance of all SLC wiring (both between conductors and from any conductor to ground) should not
exceed 0.5 micro farads.
90
Wire Gauge
22 AWG
18 AWG
16 AWG
14 AWG
Table 7.3 Maximum wiring distance for SD devices
Wire Requirements
Table 7.4 SLC Wiring Requirements for SK modules
Max. Distance for SD
1500 feet
3900 feet
6200 feet
10,000 feet
Distance in Feet (meters)
12,500 ft. (3,810 m)
9,500 ft. (2895.6 m)
6,000 ft. (1,828.8 m)
3,700 ft. (1,127.76 m)
5,000 ft. (1,528 m)
3,700 ft. (,127.76 m)
5,000 ft. (1524 m)
3,700 ft. (1,127.76 m)
6820 / 6820EVS Manual P/N LS10144-001SK-E:C 09/28/2017
Wire Type
12 AWG (3.31 mm)
14 AWG (2.08 mm)
16 AWG (1.31 mm)
18 AWG (0.82 mm)
12 to 16 AWG (3.31 mm to 1.31 mm)
18 AWG (0.82 mm)
12 to 16 AWG (3.31 mm to 1.31 mm)
18 AWG (0.82 mm)
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