SilentKnight SK-4 User Manual
MODELS
SK-2/E & SK-4/E
Fire Alarm Control Panels
Instruction Manual
Document 52604
9/14/2010 Rev:
P/N 52604:B ECN 09-722
B
Fire Alarm System Limitations
While a fire alarm system may lower insurance rates, it is not a substitute for fire insurance!
An automatic fire alarm system—typically made up of
smoke detectors, heat detectors, manual pull stations, audible
warning devices, and a fire alarm control panel with remote
notification capability—can provide early warning of a developing fire. Such a system, however, does not assure protection
against property damage or loss of life resulting from a fire.
The Manufacturer recommends that smoke and/or heat detectors be located throughout a protected premise following the
recommendations of the National Fire Protection Association
Standard 72 (NFPA 72), manufacturer's recommendations,
State and local codes, and the recommendations contained in
the Guides for Proper Use of System Smoke Detectors, which
are made available at no charge to all installing dealers.
These documents can be found at http://www.systemsensor.com/html/applicat.html. A study by the Federal Emergency Management Agency (an agency of the United States
government) indicated that smoke detectors may not go off in
as many as 35% of all fires. While fire alarm systems are
designed to provide early warning against fire, they do not
guarantee warning or protection against fire. A fire alarm system may not provide timely or adequate warning, or simply
may not function, for a variety of reasons:
Smoke detectors may not sense fire where smoke cannot
reach the detectors such as in chimneys, in or behind walls, on
roofs, or on the other side of closed doors. Smoke detectors
also may not sense a fire on another level or floor of a building.
A second-floor detector, for example, may not sense a firstfloor or basement fire.
Particles of combustion or “smoke” from a developing fire
may not reach the sensing chambers of smoke detectors
because:
• Barriers such as closed or partially closed doors, walls, or
chimneys may inhibit particle or smoke flow.
• Smoke particles may become “cold,” stratify, and not reach
the ceiling or upper walls where detectors are located.
• Smoke particles may be blown away from detectors by air
outlets.
• Smoke particles may be drawn into air returns before
reaching the detector.
The amount of “smoke” present may be insufficient to alarm
smoke detectors. Smoke detectors are designed to alarm at
various levels of smoke density. If such density levels are not
created by a developing fire at the location of detectors, the
detectors will not go into alarm.
Smoke detectors, even when working properly, have sensing
limitations. Detectors that have photoelectronic sensing
chambers tend to detect smoldering fires better than flaming
fires, which have little visible smoke. Detectors that have ionizing-type sensing chambers tend to detect fast-flaming fires
better than smoldering fires. Because fires develop in different
ways and are often unpredictable in their growth, neither type
of detector is necessarily best and a given type of detector
may not provide adequate warning of a fire.
Smoke detectors cannot be expected to provide adequate
warning of fires caused by arson, children playing with
matches (especially in bedrooms), smoking in bed, and violent
explosions (caused by escaping gas, improper storage of
flammable materials, etc.).
Heat detectors do not sense particles of combustion and
alarm only when heat on their sensors increases at a predetermined rate or reaches a predetermined level. Rate-of-rise
heat detectors may be subject to reduced sensitivity over time.
For this reason, the rate-of-rise feature of each detector
should be tested at least once per year by a qualified fire protection specialist. Heat detectors are designed to protect
property, not life.
IMPORTANT! Smoke detectors must be installed in the
same room as the control panel and in rooms used by the system for the connection of alarm transmission wiring, communications, signaling, and/or power. If detectors are not so
located, a developing fire may damage the alarm system, crippling its ability to report a fire.
Audible warning devices such as bells may not alert people
if these devices are located on the other side of closed or
partly open doors or are located on another floor of a building.
Any warning device may fail to alert people with a disability or
those who have recently consumed drugs, alcohol or medication. Please note that:
• Strobes can, under certain circumstances, cause seizures
in people with conditions such as epilepsy.
• Studies have shown that certain people, even when they
hear a fire alarm signal, do not respond or comprehend the
meaning of the signal. It is the property owner's responsibility to conduct fire drills and other training exercise to
make people aware of fire alarm signals and instruct them
on the proper reaction to alarm signals.
• In rare instances, the sounding of a warning device can
cause temporary or permanent hearing loss.
A fire alarm system will not operate without any electrical
power. If AC power fails, the system will operate from standby
batteries only for a specified time and only if the batteries have
been properly maintained and replaced regularly.
Equipment used in the system may not be technically compatible with the control panel. It is essential to use only equipment listed for service with your control panel.
Telephone lines needed to transmit alarm signals from a
premise to a central monitoring station may be out of service
or temporarily disabled. For added protection against telephone line failure, backup radio transmission systems are recommended.
The most common cause of fire alarm malfunction is inadequate maintenance. To keep the entire fire alarm system in
excellent working order, ongoing maintenance is required per
the manufacturer's recommendations, and UL and NFPA standards. At a minimum, the requirements of NFPA 72 shall be
followed. Environments with large amounts of dust, dirt or
high air velocity require more frequent maintenance. A maintenance agreement should be arranged through the local manufacturer's representative. Maintenance should be scheduled
monthly or as required by National and/or local fire codes and
should be performed by authorized professional fire alarm
installers only. Adequate written records of all inspections
should be kept.
Limit-C1-2-2007
2 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
Installation Precautions
Adherence to the following will aid in problem-free installation with long-term reliability:
WARNING - Several different sources of power can be
connected to the fire alarm control panel. Disconnect all
sources of power before servicing. Control unit and associated equipment may be damaged by removing and/or inserting cards, modules, or interconnecting cables while the unit is
energized. Do not attempt to install, service, or operate this
unit until manuals are read and understood.
CAUTION - System Re-acceptance Test after Software
Changes: To ensure proper system operation, this product
must be tested in accordance with NFPA 72 after any programming operation or change in site-specific software. Reacceptance testing is required after any change, addition or
deletion of system components, or after any modification,
repair or adjustment to system hardware or wiring. All components, circuits, system operations, or software functions known
to be affected by a change must be 100% tested. In addition,
to ensure that other operations are not inadvertently affected,
at least 10% of initiating devices that are not directly affected
by the change, up to a maximum of 50 devices, must also be
tested and proper system operation verified.
This system meets NFPA requirements for operation at 0-49º
C/32-120º F and at a relative humidity 93% ± 2% RH (noncondensing) at 32°C ± 2°C (90°F ± 3°F). However, the useful
life of the system's standby batteries and the electronic components may be adversely affected by extreme temperature
ranges and humidity. Therefore, it is recommended that this
system and its peripherals be installed in an environment with
a normal room temperature of 15-27º C/60-80º F.
Verify that wire sizes are adequate for all initiating and indicating device loops. Most devices cannot tolerate more than a
10% I.R. drop from the specified device voltage.
Like all solid state electronic devices, this system may
operate erratically or can be damaged when subjected to lightning induced transients. Although no system is completely
immune from lightning transients and interference, proper
grounding will reduce susceptibility. Overhead or outside aerial
wiring is not recommended, due to an increased susceptibility
to nearby lightning strikes. Consult with the Technical Services Department if any problems are anticipated or encountered.
Disconnect AC power and batteries prior to removing or
inserting circuit boards. Failure to do so can damage circuits.
Remove all electronic assemblies prior to any drilling, filing,
reaming, or punching of the enclosure. When possible, make
all cable entries from the sides or rear. Before making modifications, verify that they will not interfere with battery, transformer, or printed circuit board location.
Do not tighten screw terminals more than 9 in-lbs. Overtightening may damage threads, resulting in reduced terminal
contact pressure and difficulty with screw terminal removal.
This system contains static-sensitive components.
Always ground yourself with a proper wrist strap before handling any circuits so that static charges are removed from the
body. Use static suppressive packaging to protect electronic
assemblies removed from the unit.
Follow the instructions in the installation, operating, and programming manuals. These instructions must be followed to
avoid damage to the control panel and associated equipment.
FACP operation and reliability depend upon proper installation.
Precau-D1-9-2005
FCC Warning
WARNING: This equipment generates, uses, and can
radiate radio frequency energy and if not installed and
used in accordance with the instruction manual may
cause interference to radio communications. It has been
tested and found to comply with the limits for class A
computing devices pursuant to Subpart B of Part 15 of
FCC Rules, which is designed to provide reasonable
protection against such interference when devices are
operated in a commercial environment. Operation of this
equipment in a residential area is likely to cause interference, in which case the user will be required to correct
the interference at his or her own expense.
Canadian Requirements
This digital apparatus does not exceed the Class A limits
for radiation noise emissions from digital apparatus set
out in the Radio Interference Regulations of the Canadian Department of Communications.
Le present appareil numerique n'emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de la classe A prescrites dans le
Reglement sur le brouillage radioelectrique edicte par le
ministere des Communications du Canada.
Silent Knight® is a registered trademark of Honeywell International Inc. Echelon® is a registered trademark and LonWorks™ is a trademark of Echelon
Corporation. ARCNET® is a registered trademark of Datapoint Corporation. Microsoft® and Windows® are registered trademarks of the Microsoft
Corporation.
©2010 by Honeywell International Inc. All rights reserved. Unauthorized use of this document is strictly prohibited.
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 3
Software Downloads
In order to supply the latest features and functionality in fire alarm and life safety technology to our customers, we make
frequent upgrades to the embedded software in our products. To ensure that you are installing and programming the latest
features, we strongly recommend that you download the most current version of software for each product prior to
commissioning any system. Contact Technical Support with any questions about software and the appropriate version for
a specific application.
Documentation Feedback
Your feedback helps us keep our documentation up-to-date and accurate. If you have any comments or suggestions about
our online Help or printed manuals, you can email us.
Please include the following information:
•Product name and version number (if applicable)
•Printed manual or online Help
•Topic Title (for online Help)
•Page number (for printed manual)
•Brief description of content you think should be improved or corrected
•Your suggestion for how to correct/improve documentation
Send email messages to:
FireSystems.TechPubs@honeywell.com
Please note this email address is for documentation feedback only. If you have any technical issues, please contact
Technical Services.
4 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
Table of Contents
Section 1: Product Description ............................................................................................. 10
1.1: Product Features ..........................................................................................................................................10
1.2: Specifications...............................................................................................................................................11
1.3: Controls and Indicators................................................................................................................................12
1.4: Circuits.........................................................................................................................................................14
1.5: Components .................................................................................................................................................14
1.6: Optional Modules and Accessories .............................................................................................................14
Section 2: Installation.............................................................................................................17
2.1: Backbox Mounting ......................................................................................................................................17
2.2: Operating Power ..........................................................................................................................................19
2.3: Input Circuits ...............................................................................................................................................20
2.4: Output Circuits.............................................................................................................................................22
2.4.1: Notification Appliance Circuits.........................................................................................................22
2.4.2: Special Application DC Power Output Connections.........................................................................23
2.4.3: Relays ................................................................................................................................................23
2.5: Power-limited Wiring Requirements........................................................................................................... 24
2.6: Installation of Optional Modules .................................................................................................................25
2.6.1: CAC-4 Class A Converter Module (SK-4 only) ...............................................................................25
Installation ............................................................................................................................................25
Wiring NACs and IDCs for Class A ....................................................................................................25
2.6.2: 4XTMF, 4XLMF and 4XZMF Option Modules...............................................................................26
4XTMF Transmitter Module Installation .............................................................................................27
4XZMF Zone Relay Module (SK-4 only)............................................................................................29
4XLMF LED Interface Module (SK-4 only) .......................................................................................30
Section 3: Program Options via DIP Switch.........................................................................32
3.1: DIP Switch Settings.....................................................................................................................................33
3.1.1: SW1 DIP Switch Settings.................................................................................................................. 35
Silence Inhibit.......................................................................................................................................35
Auto-silence..........................................................................................................................................35
Temporal Coding.................................................................................................................................. 35
Selective Silence...................................................................................................................................35
Trouble Reminder.................................................................................................................................35
AC Trouble Delay ................................................................................................................................35
Autoresettable Supervisory ..................................................................................................................35
IDC Combination Circuit .....................................................................................................................36
3.1.2: SW2 DIP Switch Settings..................................................................................................................36
IDC1 Verification (SK-4 only)............................................................................................................36
IDC1 Supervisory (SK-4 only)............................................................................................................. 36
IDC1 Verification for SK-2 or IDC2 Verification for SK-4 ................................................................36
IDC1 Supervisory for SK-2 or IDC2 Supervisory for SK-4 ................................................................ 37
IDC2 Verification for SK-2 or IDC3 Verification for SK-4 ................................................................37
IDC2 Supervisory for SK-2 or IDC3 Supervisory for SK-4 ................................................................ 37
IDC4 Verification (SK-4 only).............................................................................................................37
IDC4 Supervisory (SK-4 only)............................................................................................................. 37
3.1.3: SW3 DIP Switch Settings..................................................................................................................37
NAC1 Nonsilenceable ..........................................................................................................................37
NAC1 Disable ......................................................................................................................................37
NAC2 Nonsilenceable (SK-4 only)......................................................................................................37
NAC2 Disable (SK-4 only) ..................................................................................................................38
Strobe Synchronization ........................................................................................................................38
Nonsilenceable Waterflow for Combination Circuit............................................................................38
Spares ...................................................................................................................................................38
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 5
Table of Contents
Section 4: Operating Instructions ......................................................................................... 40
4.1: Switch Functions in Normal Mode ..............................................................................................................40
4.1.1: ACK - Acknowledge .........................................................................................................................40
4.1.2: Silence................................................................................................................................................40
4.1.3: Zone Enable/Disable..........................................................................................................................40
4.1.4: Reset/(Lamp Test) .............................................................................................................................40
4.1.5: Walktest .............................................................................................................................................41
4.2: Walktest........................................................................................................................................................41
4.3: Status LEDs..................................................................................................................................................42
4.4: Operation......................................................................................................................................................43
4.4.1: Fire Alarm Response .........................................................................................................................44
4.4.2: Fire Alarm Restoral ...........................................................................................................................44
4.4.3: System Supervisory Condition Response..........................................................................................44
4.4.4: System Supervisory Restoral Response.............................................................................................44
4.4.5: Trouble Condition Response .............................................................................................................44
4.4.6: Trouble Condition Restoral ...............................................................................................................45
Section 5: Power Supply Calculations ................................................................................. 46
5.1: Overview......................................................................................................................................................46
5.2: Calculating the AC Branch Circuit ..............................................................................................................46
5.3: Calculating the System Current Draw .........................................................................................................47
5.3.1: Overview............................................................................................................................................47
5.3.2: How to Use Table 5.3 on page 48 to Calculate System Current Draw .............................................47
5.4: Calculating the Battery Size.........................................................................................................................48
5.4.1: NFPA Battery Requirements .............................................................................................................49
5.4.2: Selecting and Locating Batteries .......................................................................................................49
Appendix A: NFPA Standard-Specific Requirements ......................................................... 50
A.1: Central Station/Remote Station Transmitter: Connection to FACP Dry Contacts......................................50
Index ........................................................................................................................................ 51
6 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
It is imperative that the installer understand the requirements of the Authority Having Jurisdiction
(AHJ) and be familiar with the standards set forth by the following regulatory agencies:
• Underwriters Laboratories Standards
• NFPA 72 National Fire Alarm Code
Before proceeding, the installer should be familiar with the following documents.
NFPA Standards
This Fire Alarm Control Panel complies with the following NFPA Standards:
NFPA 72 National Fire Alarm Code for Local Fire Alarm Systems and Remote Station
Fire Alarm Systems (requires an optional Remote Station Output Module)
Underwriters Laboratories Documents for Reference:
UL 38 Manually Actuated Signaling Boxes
UL 217 Smoke Detectors, Single and Multiple Station
UL 228 Door Closers–Holders for Fire Protective Signaling Systems
UL 268 Smoke Detectors for Fire Protective Signaling Systems
UL 268A Smoke Detectors for Duct Applications
UL 346 Waterflow Indicators for Fire Protective Signaling Systems
UL 464 Audible Signaling Appliances
UL 521 Heat Detectors for Fire Protective Signaling Systems
UL 864 Standard for Control Units for Fire Protective Signaling Systems
UL 1481 Power Supplies for Fire Protective Signaling Systems
UL 1638 Visual Signaling Appliances
UL 1971 Signaling Devices for Hearing Impaired
Other:
NEC Article 250 Grounding
NEC Article 300 Wiring Methods
NEC Article 760 Fire Protective Signaling Systems
Applicable Local and State Building Codes
Requirements of the Local Authority Having Jurisdiction (LAHJ)
Silent Knight Documents
Silent Knight Device Compatibility DocumentDocument #52612
411 Digital Alarm Communicator/TransmitterDocument #50921
411UD Digital Alarm Communicator/TransmitterDocument #50759
This product has been certified to comply with the requirements in the Standard for Control Units and Accessories for Fire
Alarm Systems, UL 864, 9th Edition. Operation of this product with products not tested for UL 864, 9th Edition has not
been evaluated. Such operation requires the approval of the local Authority Having Jurisdiction (AHJ).
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 7
J7 Transformer
Connector
120 VAC, 2.3A or
220/240 VAC, 1.15A
Earth
Neutral
Hot
(supervised,
nonpower-limited)
J8 Battery Connector
(supervised, nonpower-limited)
18 Amp Hour max.
Charger Fault LED
Battery Fault LED
Earth Fault LED
SW1, SW2 and SW3
Programming DIP Switches
Note: Factory-installed cover
removed for illustration
purposes only!
24 VDC Special Application
Resettable Power
500 mA max. (nonsupervised,
power-limited)
- 24 VDC
+ 24 VDC
NAC (4.7KW, ½ watt ELR)
2.5A max.
(supervised, power-limited)
B-
B+
IDC (4.7 K, ½ watt ELR)
(supervised, power-limited)
Zone 2 B-
Zone 2 B+
Zone 1 B-
Zone 1 B+
Trouble Relay (fail-safe)
2 amps @ 30 VAC
(nonsupervised)
Common
Trouble (Normally Open)
Normal (Normally Closed)
Alarm Relay
2 amps @ 30 VAC
(nonsupervised)
Common
Normally Closed
Normally Open
ms2bord.wmf
JP3 - Cut to disable
Ground Fault
detection (only with
approval of AHJ)
J3 and J5
4XTMF Option
Module
Connectors
Module Placement Supervision (if installed)
JP1 - cut to supervise module on J3 & J5
Two Zone Main Circuit Board
8 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
4 Zone Main Circuit Board
O
N
1
2
3
4
5
6
7
8
O
N
1
2
3
4
5
6
7
8
O
N
1
2
3
4
5
6
7
8
SUPERVISORY
SUPERVISORY
SUPERVISORY
SUPERVISORY
TROUBLE
TROUBLE
TROUBLE
TROUBLE
MAINTENANCE
MAINTENANCE
MAINTENANCE
MAINTENANCE
FIRE ALARM
FIRE ALARM
AC
POWER
NAC
DISABLE
NAC
FAULT
SYSTEM
TROUBLE
POWER
TROUBLE
WALK
TEST
ALARM
SILENCE
ZONE
DISABLE
FIRE ALARM
FIRE ALARM
RESET
WAL K
TEST
ALARM
SILENCE
ACK
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE
ENABLE/DISABLE
3
4
2
1
TB1
TB2
TB3
TB5
TB6
TB7
J1
B+ B- B+ B NAC 1 NAC 2
+ - + -
Nonreset Reset
B+ B- B+ B ZONE 1 ZONE 2
B+ B- B+ B ZONE 3 ZONE 4
C TRBL NORM
TROUBLE
C NC NO
ALARM SUPV
C NC NO
J3
J5
J4
J8
J7
J9
TB8
J6
JP1
JP3
SW1
BATTERY
HOT NEUT EARTH
TRANSFORMER 1TRANSFORMER 2
SW2 SW3
JP2
EARTH BATT CHG
CLASS A
CONVERTER
J7 Transformer
Connector
120 VAC, 2.3A or
220/240 VAC, 1.15A
Hot
Neutral
Earth
(supervised,
nonpower-limited)
J8 Battery
Connector
(supervised,
nonpower-limited)
18 Amp Hour max.
Charger Fault LED
Battery Fault LED
Earth Fault LED
SW1, SW2 and SW3
Programming DIP Switches
Note: Factory-installed cover
removed for illustration purposes
only!!
24 VDC Special Application
Power TB1
500 mA per circuit
(nonsupervised, power-
limited)
- Reset
+ Reset
- Nonreset
+Nonreset
NAC (4.7K, ½ watt ELR)
TB2 2.5A max. per NAC
(supervised, power-limited)
NAC 2 B-
NAC 2 B+
NAC 1 B-
NAC 1 B+
Zone 4 B-
Zone 4 B+
Zone 3 B-
Zone 3 B+
Zone 2 B-
Zone 2 B+
Zone 1 B-
Zone 1 B+
Trouble Relay TB5 (fail-safe)
2A @ 30 VAC (nonsupervised)
Common
Trouble (Normally Open)
Normal (Normally Closed)
Alarm Relay TB6
2A @ 30 VAC
(nonsupervised)
Common
Normally Closed
Normally Open
Supv. Relay TB7
2A @ 30 VAC
(nonsupervised)
Common
Normally Closed
Normally Open
J3 and J5
Option Module
Connectors
J4 and J6
Option Module
Connectors
Module Placement Supervision (if installed)
JP1 - cut to supervise module on J3 & J5
JP2 - cut to supervise module on J4 and J6
Class A
Converter Module
J9 Transformer
(optional)
ms4bord.wmf
JP3 - Cut to disable
Ground Fault
detection (only with
approval of AHJ)
IDC (4.7 K, ½ watt ELR) TB3 (supervised, power-limited)
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 9
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
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
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.
3
detectors
3
Installation and
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.
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
10 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
Specifications Product Description
Zone Enable/Disable (one per zone)
• LED Indicators
Fire Alarm (one per zone)
Supervisory (one per zone)
Trouble (one per zone)
Maintenance (one per zone)
AC Power
NAC Disable
Zone Disable
NAC Fault
System Trouble
Power Trouble
Walktest
Alarm Silence
Earth Fault LED (on circuit board) lights if zero impedance between FACP and ground exist
Battery Fault (on circuit board)
Charger Fault (on circuit board)
• Piezo sounder for alarm, trouble and supervisory
• 24 volt operation
• Low AC voltage sense
• Alarm Verification
• NACs Programmable for:
Silence Inhibit
Auto-Silence
Strobe Synchronization
Selective Silence (horn-strobe mute)
Temporal or Steady Signal
Silenceable or Nonsilenceable
• Automatic battery trickle charger
• Silent or audible walktest capabilities
• Optional NAC Class A converter module (SK-4 only)
• Optional 4XTMF Transmitter Module (SK-2 and SK-4)
• Optional 4XZMF Zone Relay Module (SK-4 only)
• Optional 4XLMF Module for RZA-4XF Remote LED Annunciator (SK-4 only)
1.2 Specifications
AC Power - TB8
SK-2/SK-4: 120 VAC, 50/60 Hz, 2.3 amps
SK-2E/SK-4E: 240 VAC, 50 Hz, 1.15 amps
Wire size: minimum #14 AWG (2.0 mm
Battery (sealed lead acid only) - J8
Maximum Charging Circuit - Normal Flat Charge: 27.6 VDC @ 0.8 amp
Maximum Charger Capacity: 18 Amp Hour battery (two 7 Amp Hour batteries can be housed in the
FACP cabinet. Larger batteries require a separate battery box such as the BB-17F.)
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 11
2
) with 600V insulation
Product Description Controls and Indicators
Initiating Device Circuits - TB3
Alarm Zones 1 & 2 (SK-2 and SK-4)
Alarm Zones 3 & 4 (SK-4 only)
Power-limited circuitry
Operation: All zones Style B (Class B)
Normal Operating Voltage: Nominal 20 VDC, Maximum 27 VDC
Alarm Current: 15 mA minimum
Short Circuit Current: 40 mA maximum
Maximum Loop Resistance: 100 ohms
End-of-Line Resistor: 4.7K, 1/2 watt (Part #71252)
Standby Current: 4 mA
Refer to the Silent Knight Device Compatibility Document for listed compatible devices
Notification Appliance Circuit(s) - TB2
One NAC on SK-2, two NACs on SK-4
Operation: Style Y (Class B)
Power-limited Circuitry
Normal Operating Voltage: Nominal 24 VDC, Maximum 27 VDC
Maximum Signaling Current: 2.5 amps total with standard transformer. 5.0 amps total (2.5 amp
maximum per NAC) with optional transformer on SK-4 only
Maximum Line Impedance: 1.5 volt drop end-of-line
End-of-Line Resistor: 4.7K, 1/2 watt (Part #71252)
Refer to the Silent Knight Device Compatibility Document for compatible listed devices
1
Form-C Relays
Trouble Relay TB5 (fail-safe)
Alarm Relay TB6
Supervisory Relay TB7 (SK-4 only)
Relay Contact Ratings: 2 amps @ 30 VAC (resistive)
Resettable Special Application Power - TB1
Operating Voltage: Nominal 24 VDC
Maximum Available Current: 500 mA - appropriate for powering 4-wire smoke detectors
(see Footnote 1.)
Power-limited Circuitry
Refer to the Silent Knight Device Compatibility Document for compatible listed devices
Nonresettable Special Application Power - TB1 (SK-4 only)
Operating Voltage: Nominal 24 VDC
Maximum Available Current: 500 mA (see footnote 1 on page 12.)
Power-limited Circuitry
Refer to the Silent Knight Device Compatibility Document for compatible listed devices
1.3 Controls and Indicators
Front Panel Membrane Buttons
• Acknowledge
• Alarm Silence
• Reset
1. Total current for resettable power and one Notification Appliance Circuit must not exceed
3.0 amps for the SK-2. Total current for nonresettable power, resettable power and two
Notification Appliance Circuits must not exceed 6.0 amps for the SK-4 (requires optional
second transformer).
12 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
Controls and Indicators Product Description
• Walktest
• Zone Enable/Disable - Zone 1
• Zone Enable/Disable - Zone 2
• Zone Enable/Disable - Zone 3 (SK-4 only)
• Zone Enable/Disable - Zone 4 (SK-4 only)
LED Indicators
• Fire Alarm Zone 1 - red LED
• Fire Alarm Zone 2 - red LED
• Fire Alarm Zone 3 - red LED (SK-4 only)
• Fire Alarm Zone 4 - red LED (SK-4 only)
• Supervisory Zone 1 - yellow LED
• Supervisory Zone 2 - yellow LED
• Supervisory Zone 3 - yellow LED (SK-4 only)
• Supervisory Zone 4 - yellow LED (SK-4 only)
• Trouble Zone 1 - yellow LED
• Trouble Zone 2 - yellow LED
• Trouble Zone 3 - yellow LED (SK-4 only)
• Trouble Zone 4 - yellow LED (SK-4 only)
• Maintenance Zone 1 - yellow LED
• Maintenance Zone 2 - yellow LED
• Maintenance Zone 3 - yellow LED (SK-4 only)
• Maintenance Zone 4 - yellow LED (SK-4 only)
• AC Power - green LED
• NAC Disable - yellow LED
• Zone Disable - yellow LED
• NAC Fault - yellow LED
• System Trouble - yellow LED
• Power Trouble - yellow LED
• Walktest - yellow LED
• Alarm Silence - yellow LED
• Earth Fault - yellow LED (on main circuit board) lights if zero impedance between FACP and
ground exists
• Battery Fault - yellow LED (on main circuit board)
• Charger Fault - yellow LED (on main circuit board)
Local Piezo Sounder
A piezo sounder provides separate and distinct sounds for alarm, trouble, maintenance and
supervisory conditions as follows:
• Alarm - on steady
• Trouble - pulse 1 second on and 1 second off
• Maintenance - pulse ½ second on and ½ second off
• Supervisory - pulse ½ second on and ½ second off
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 13
Product Description Circuits
1.4 Circuits
Input Circuits
Two input IDCs (Initiating Device Circuits) on the SK-2 and four IDCs on the SK-4 provide Style
B (Class B) configurations. All IDCs accept i
detectors, four-wire smoke detectors and normally-open contact devices.
Output Circuits
• 24 VDC resettable special application power output - 500 mA
• 24 VDC nonresettable special application power output (SK-4 only) - 500 mA
• 24 volt battery charger (up to 18 Amp Hour batteries)
Notification Appliance Circuits
One NAC (Notification Appliance Circuit) Style Y (Class B) on the SK-2
Two NACs Style Y (Class B) on the SK-4
Relays
Alarm Relay
Trouble Relay (fail-safe)
Supervisory Relay (SK-4 only)
Form-C contacts rated 2.0 amps @ 30 VAC (resistive)
1.5 Components
Main Circuit Board
The main circuit board contains the system’s CPU, power supply, other primary components and
wiring interface connectors. Optional modules plug in and are mounted to the main circuit board.
3
detectors as well as conventional two-wire smoke
Cabinet
The backbox measures 14.5” (36.8 cm) x 15.218” (38.65 cm) x 2.875” (7.3 cm) and provides space
for two batteries (up to 7 Amp Hours). Also included is a dress panel which mounts inside the
cabinet.
Transformer Assembly
One 100VA transformer is provided standard with the FACP. An optional second 100VA
transformer is available for the SK-4 to provide maximum accessory power.
Batteries
The cabinet provides space for two 7 Amp Hour batteries (larger batteries up to 18 Amp Hour,
require use of a UL listed battery box such as the BB-17F). Batteries must be ordered separately.
1.6 Optional Modules and Accessories
CAC-4 Class A Converter Module (SK-4 only)
The CAC-4 Module can be used to convert the Style B (Class B) Initiating Device Circuits to Style
D (Class A) and Style Y (Class B) Notification Appliance Circuits to Style Z (Class A). The
module connects to J1 on the SK-4 main circuit board.
4XTMF Transmitter Module (SK-2 and SK-4)
The 4XTMF provides a supervised output for local energy municipal box transmitter and alarm and
trouble reverse polarity. It includes a disable switch and disable trouble LED. A module jumper
option allows the reverse polarity circuit to open with a system trouble condition if no alarm
14 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
Optional Modules and Accessories Product Description
condition exists. The 4XTMF mounts to the SK-2 main circuit board option module connectors J3
& J5 or the SK-4 main circuit board, occupying one of the two sets of option module connectors J3
& J5 or J4 & J6.
4XLMF LED Interface Module (SK-4 only)
The LED Interface Module supports the RZA-4XF Remote Annunciator module. Annunciator
wiring is supervised for open conditions by this module. The 4XLMF mounts to the SK-4 main
circuit board option module connectors J3 and J5 only
.
RZA-4XF Remote Annunciator (SK-4 only)
The Remote Annunciator mounts on a standard single-gang electrical box and provides LED
indication of the following:
• Alarm Zone 1 (red LED)
• Alarm Zone 2 (red LED)
• Alarm Zone 3 (red LED)
• Alarm Zone 4 (red LED)
• System Trouble (yellow LED)
A Local Trouble Sounder and Silence Switch are also provided. All LED wiring is supervised for
open conditions. Any open condition will cause the System Trouble LED to illuminate. Slide-in
paper labels permit an easy change of zone information.
NOTE: The RZA-4XF Remote Annunciator requires the use of the LED Interface Module (4XLMF).
4XZMF Zone Relay Module (SK-4 only)
The Zone Relay Module provides Form-C relay contacts for the following:
• Alarm Zone 1
• Alarm Zone 2
• Alarm Zone 3
• Alarm Zone 4
• System Alarm
• System Trouble
As a jumper option, the first four relays described above can be made silenceable. The 4XZMF
mounts to the SK-4 main circuit board, occupying one of the two sets of option module connectors.
Dress Panel DP-MS2/4
A dress panel DP-MS2/4 is optional. The dress panel restricts access to the system wiring while
allowing access to the membrane switch panel.
Battery Box
The BB-17F battery box may be used to house two batteries greater than 7 Amp Hour to a
maximum of 18 Amp Hour. The battery box mounts directly below the control panel cabinet,
centered to the main circuit board. The BB-17F is red and is provided with knockouts.
411 and 411UD Digital Alarm Communicator/Transmitter
The three input/channel 411 and the four input/channel 411UD are dual line, digital alarm
communicator/transmitters which can be used as slave communicators with the SK-4 FACP. The
inputs/channels are compatible with normally open relay contacts, require ELRs (End-of-Line
Resistors), are supervised and are fully programmable. The communicators interface with the
public switched telephone network and are compatible with most central station receivers. Power
supplied must be 12 or 24 volts, filtered and nonresettable. The communicators are mounted in a
small metal enclosure, providing a variety of mounting options. Refer to the 411 or 411UD manual
for additional information.
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 15
Notes
16 SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010
Section 2: Installation
Figure 2.1 Backbox Mounting Dimensions
Bottom
Height=15.000”
(38.10 cm)
10.375”
(26.35 cm)
0.75”(1.9 cm)
2.875” (7.3 cm)
Backbox = 14.5”
(36.8 cm)
Depth = 3.000”
(7.62 cm)
Top
9.1” (23.1 cm)
2.7”
(6.86cm)
1.125” (2.868 cm)
Pem Studs
Backbox Mounting Holes
ms2-4cab.wmf
The cabinet can be surface mounted or semi-flush mounted using the optional Trim Ring P/N: TR1-R. The door is removable during the installation period by opening and lifting if off the hinges.
The cabinet mounts using two key slots at the top of the backbox and two additional 0.250”
diameter holes located at the bottom.
Carefully unpack the system and check for shipping damage. Select a location for the cabinet that
is in a clean, dry, vibration-free area where extreme temperatures are not encountered. The area
should be readily accessible with sufficient room to easily install and maintain the control panel.
Locate the top of the cabinet approximately five feet above the floor with the hinge mounting on
the left.
Determine the number of conductors required for the devices to be installed and determine the
appropriate knockouts. All wiring must be in accordance with the National and/or Local codes for
fire alarm systems and power supplies.
2.1 Backbox Mounting
1. Mark and predrill holes for the top two keyhole mounting bolts
2. Install two upper fasteners in the wall with the screw heads protruding approximately Ľ”
3. Using the upper keyholes, mount the backbox over the two screws
4. Mark the lower two holes, remove the backbox from the wall and drill the mounting holes
5. Mount the backbox, install the remaining fasteners and tighten all screws
SK-2 & SK-4 Series Manual — P/N 52604:B 9/14/2010 17
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