SilentKnight SK-4 Conventional FACP 2 & 4 Zone - Manual (Page 10)

10 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
Section 1: Product Description
The SK-2 is a two zone FACP (Fire Alarm Control Panel) and the SK-4 is a four zone FACP. The
information in this manual refers to both the SK-2 and SK-4 unless otherwise specified. These
control panels provide reliable fire signaling protection for small to medium sized commercial,
industrial and institutional buildings. The FACP is compatible with System Sensor’s i
3 detectors
which are microprocessor-based conventional smoke detectors that can transmit a maintenance
trouble signal to the FACP indicating the need for cleaning and a supervisory ‘freeze’ signal when
the ambient temperature falls below the detector rating (refer to System Sensor’s i
3 Installation and
Maintenance Instructions document I56-1800-00 for device specifications). In addition, the control
panel is compatible with conventional input devices such as two-wire smoke detectors, four-wire
smoke detectors, pull stations, waterflow devices, tamper switches and other normally-open contact
devices. Refer to the Silent Knight Device Compatibility Document for a complete listing of
compatible devices.
Outputs include one NAC (Notification Appliance Circuit) on the SK-2 and two NACs on the SK-
4. Each FACP has a Form-C Alarm and Trouble relay and 24 VDC special application resettable
power. In addition, the SK-4 has a Form-C Supervisory relay and a nonresettable special
application power output. The FACP supervises wiring, AC voltage and battery level.
Activation of a compatible smoke detector or any normally-open fire alarm initiating device will
activate audible and visual signaling devices, illuminate an indicating LED, sound the piezo
sounder at the FACP, activate the FACP alarm relay and operate an optional module used to notify
a remote station or initiate a auxiliary control function. The SK-2E and SK-4E offer the same
features as the SK-2 and SK-4 but allows connection to 220/240 VAC.
1.1 Product Features
• Style B (Class B) IDC (Initiating Device Circuit)
 one zone programmable for combination supervisory and
waterflow
 SK-2 - two IDCs
 SK-4 - four IDCs
• Style Y (Class B) NAC (Notification Appliance Circuit)
 SK-2- one NAC
 SK-4 - two NACs
• Form-C Alarm Relay
• Form-C Trouble Relay
• Form-C Supervisory Relay (SK-4 only)
• 3.0 amps total system current standard for SK-2 and SK-4
• 6.0 amps total system current available for SK-4 with optional second transformer
• Dress Panel DP-MS2/4
• Optional Trim Ring P/N: TR-1-R for semi-flush mounting the cabinet
• Control Buttons
 ACK (Acknowledge)
 Alarm Silence
 Reset
 Walktest
NOTE: Unless otherwise specified, the terms SK-2 and SK-4 are used in this manual to refer to
the SK-2 and SK-2E as well as the SK-4 and SK-4E FACPs respectively.