SilentKnight SK-5208 Conventional FACP 10-30 Zone - Manual (Page 37)

Model SK-5208 Installation Manual 151204
3-27
Figure 3-25 Model 5824 Serial/Parallel Port, and ID Selector Switch location
3.15 Special Applications
3.15.1 Model 5220 Direct Connect Module
The 5220 Direct Connect module can be used with the SK-5208 to meet NFPA 72 standards. The 5220 requires
four connections to the SK-5208 and provides outputs for city box and polarity reversal applications. The 5220
cannot be used for sprinkler supervisory.
The 5220 provides a current that reverses polarity during alarm or removes current during a trouble condition.
Maximum voltage 27.3 VDC.
Note: The 5220 Direct Connect Module will activate for alarm and trouble conditions during a Walk Test. To
disable alarm activation during Walk Test, bypass the NAC programmed for Direct Connect before enter-
ing the Walk Test mode. To bypass the NAC, press; 10 + NAC# + * + Code (repeat to un-bypass NAC).
The Direct Connect relay will indicate trouble until the NAC is un-bypassed.
3.15.1.1 City Box Connection
This section describes how to connect the SK-5208 to a municipal fire alarm box or “city box” as required by
NFPA 72 Auxiliary Protected Fire Alarm systems for fire alarm service. The city (master) box is an enclosure
that contains a manually operated transmitter used to send an alarm to the municipal communication center
which houses the central operating part of the fire alarm system.
The maximum coil and wire resistance (combined) must not exceed 30 ohms.
To install the 5220 for city box connection:
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 as shown in Figure 3-26. This drawing also shows how to connect the city box
coil to terminals 3 and 4 on the 5220.
Serial Port
Parallel Port
ID Selector
Switches
5824