Swift Wireless Slc Devices; Maximum Number Of Devices; Wiring Requirements For Slc Devices; Wire Sizing On 5815Xl For Sd Devices - Honeywell 6820EVS Installation And Optimization Manual

Model 6820 / 6820-EVS Installation Manual
7.3

SWIFT Wireless SLC Devices

The WSK-WGI Wireless Gateway acts as a bridge between a group of wireless fire devices and a SLC loop on
the 6820 /6820EVS. It is powered by the SLC loop or by a regulated, external 24VDC UL-listed power supply.
Available wireless devices include a photo detector, a photo/heat detector, a fixed-temperature heat detector, a
rate-of-rise detector, and a monitor module. For details about wireless devices, system setup and operation see
®
the SWIFT Smart Wireless Integrated Fire Technology Manual # LS10036-001SK-E for more information.
7.4

Maximum Number of Devices

The 6820/6820EVS supports SK, SD or SWIFT™ SLC devices. The maximum number of SLC devices per
system varies depending on device protocol. The number of SLC expanders is limited only by the SBUS
bandwidth, point count, and 1A SBUS current limit. Device support is as follows:
• SK Devices–The 6820/EVS supports a total of 1,110 SK points. The SLC points can be all sensors or all
modules or any combination of modules and sensors. SK devices are supported on the 6815 or the internal
SLC.
OR
• SD Devices–The 6820/6820EVS system can support a total of 635 SD devices, in any combination. SD
devices are supported on the 5815XL or the internal SLC.
OR
• 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.
7-3
LS10144-001SK-E