NFS2-640/E Operations Manual —
P/N 52743:F1 06/16/2011
33
Waterflow Circuit Operation
Operation of the Control Panel
3.14 Waterflow Circuit Operation
If a monitor module programmed with a
WATERFLOW
Type Code initiates a fire alarm, the control
panel disables the
SIGNAL
SILENCE
key and the Auto Silence Timer. Refer to the
NFS2-640
Installation Manual
for information on Waterflow circuits.
3.15 Style 6 and Style 7 Operation
Style 6 and Style 7 are supervised methods of communicating with addressable devices. If the
control panel detects a trouble (open or short), it will attempt to drive both ends of the loop,
maintaining communication in an unsupervised method. The trouble will display on the panel as a
Style 6 trouble until you correct the condition. Style 7 configuration of the SLC requires the use of
ISO-X
isolator
modules.
