SilentKnight SK-5208 Conventional FACP 10-30 Zone - Manual (Page 38)

Control Panel Installation 151204
3-28
3. Program NAC #4 to be direct connect from the NAC Options menu. Relay #4 will automatically be config-
ured to indicate system troubles.
Note: It is not possible to reset the remote indication until you clear the condition and reset the SK-5208.
Figure 3-26 City Box Connection
3.15.1.2 NFPA 72 Polarity Reversal
When the 5220 is wired and programmed for polarity reversal, it reports alarm and trouble events to a remote
site. Alarms will override trouble conditions and it will not be possible to reset the remote indicator until the
condition is cleared and the SK-5208 panel is reset.
If an alarm condition occurs, the alarm relay will close, overriding the trouble condition.
To install the 5220 for polarity reversal, follow the steps below:
1. Locate the knockout on the right side of the SK-5208 cabinet to connect the 5220 using a short piece of con-
duit (must not exceed 20 feet in length).
2. Wire the 5220 to the SK-5208 using the four-wire pigtail provided as shown in Figure 3-27 (next page). This
diagram also shows how to connect the 5220 to the remote indicator.
3. Program one of the notification circuits to be Direct Connect (Figure 3-27 uses NAC 4 and Relay 4). The
relay and NAC circuits are paired when selected as direct connect. For example, if NAC 4 is programmed as
Direct Connect then relay 4 used for the trouble output. Do not program the NAC for Silence or Supervision
(NACs with EOL).
5220
Control
Supervised for
Opens and Ground Faults
City Box
Coil Resistance
14.5

Panel