4 model sk-5217 zone expander installation, 1 zone inputs, 4 model sk-5217 zone expander installation -22 – SilentKnight SK-5208 Conventional FACP 10-30 Zone User Manual
Page 32: 1 zone inputs -22

Control Panel Installation 151204
3-22
3.14.4
Model SK-5217 Zone Expander Installation
The Model SK-5217 provides the SK-5208 with ten additional Class B (style B) zones. The SK-5217 connects to
the SK-5208 control panel via the SBUS as shown in Figure 3-19.
Figure 3-19 SBUS Connections
3.14.4.1 Zone Inputs
Figure 3-20 and Figure 3-21 shows how to wire detectors to the SK-5217. Use a 4.7k end of line resistor for each
Class B circuit. The EOL must be wired in parallel with the normally open contact farthest from the panel. See
Appendix A for a list of the smoke detectors that can be used with the SK-5217.
Maximum circuit Resistance - 50 ohms
Maximum Total alarm current for all class B (style A) zones - 1 A
Maximum Standby Current per Zone:3.0 mA
Maximum Alarm Current per Zone:95 mA
Control Panel
Supervised
Power Limited
SK-5217
Class B
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