Nfpa Style 7 Slc Using Isolator Modules - Honeywell SLC Installation Manual

SLC Circuits with Isolators

4.4 NFPA Style 7 SLC Using Isolator Modules

Style 7 operation requires using isolator modules (or a combination of isolator modules and isolator
bases) before and after each device. Flanking each device with an isolator provides fault protection
to all other devices on the loop.
• T-tapping is NOT allowed within the Style 7 wiring configuration.
• When a detector base or pull station is used, install isolator modules on both sides of the
device.
• Connections between isolator modules and the device they isolate must be "close-nippled"
conduit, within 3 feet (91.44 cm).
3 4
Isolator
Module
Two-Wire
Addressable
Detector
3 4
Isolator
Module
3 4
Isolator
Module
Figure 4.6 NFPA Style 7 SLC Using Isolator Modules
28
1 3
Isolator
Module
Two-wire
Addressable
Detector
SLC Out
Control Panel
NFPA Style 7 SLC Using Isolator Modules
1 3
Isolator
Module
Addressable
Pull Station
SLC Return
FireLite SLC Wiring Manual — P/N 51309:P4 9/17/2014
2 1
Isolator
Module
2 1
Isolator
Module
2 1
Isolator
Module