151051 2224 Installation Manual
User Manual: 2224 Installation Manual AlarmHow.net Library
Open the PDF directly: View PDF 
.
Page Count: 52
151051 i
Content
Section 1
Overview ...................................................................................................................................................... 1-1
1.1 SK-2224 Description ................................................................................................................................ 1-1
1.2 How to Contact Silent Knight .................................................................................................................. 1-1
Section 2
Agency Requirements ............................................................................................................... 2-1
2.1 FCC Warning ........................................................................................................................................... 2-1
2.2 Underwriters Laboratories (UL) .............................................................................................................. 2-1
2.2.1 Requirements for All Installations ................................................................................................ 2-1
2.2.2 Requirements for Local Protected Fire Alarm Systems ................................................................ 2-1
Section 3
Before You Begin Installing ............................................................................................... 3-1
3.1 What's in the Box? ................................................................................................................................... 3-1
3.2 Optional Accessories ................................................................................................................................ 3-2
3.3 SK-2224 Board Layout ............................................................................................................................ 3-3
3.4 Electrical Specifications ........................................................................................................................... 3-4
3.5 Environmental Specifications .................................................................................................................. 3-4
3.6 Mounting the SK-2224 ............................................................................................................................. 3-5
3.7 Assembly .................................................................................................................................................. 3-6
3.8 Wiring Specifications ............................................................................................................................... 3-7
3.9 Calculating Current Draw and Standby Battery ...................................................................................... 3-8
3.9.1 Worksheet Requirements .............................................................................................................. 3-8
Filling in the Current Draw Worksheet, Table 3-6 (Section 3.9.3) ............................................... 3-8
3.9.2 Maximum Battery Standby Load .................................................................................................. 3-8
3.9.3 Current Draw Worksheet .............................................................................................................. 3-9
Section 4
Hardware Installation .................................................................................................................. 4-1
4.1 AC Power ................................................................................................................................................. 4-1
4.2 Battery Connection .................................................................................................................................. 4-2
4.3 Initiation Circuit Installation .................................................................................................................... 4-3
4.3.1 Contact Wiring .............................................................................................................................. 4-3
4.3.2 Two-Wire Smoke Detector Wiring ............................................................................................... 4-3
4.3.3 Four-Wire Smoke Detector ........................................................................................................... 4-4
4.3.4 Notification Circuit Installation .................................................................................................... 4-5
4.4 Alarm and Trouble Relays ....................................................................................................................... 4-5
4.5 Auxiliary Power Circuit ........................................................................................................................... 4-5
4.6 Door Release Wiring ................................................................................................................................ 4-6
Model SK-2224 Fire Control Panel Installation/Operation Manual
ii 151051
4.7 Optional Accessories Installation ............................................................................................................. 4-7
4.7.1 Installing the Serial Driver Board (Model SK-2884) .................................................................... 4-7
Wiring the SK-2884 to an Expansion Device ............................................................................... 4-8
4.7.2 SK-2865 LED Annunciator Installation ........................................................................................ 4-8
SK-2865 Electrical Specification .................................................................................................. 4-8
Wiring the SK-2865 to the SK-2884 ............................................................................................. 4-8
Setting the SK-2865’s address .................................................................................................... 4-10
Mounting the SK-2865 ................................................................................................................ 4-10
Section 5
System Configuration ................................................................................................................ 5-1
Section 6
System Operation ............................................................................................................................ 6-1
6.1 Meaning of LEDs ..................................................................................................................................... 6-1
6.2 Operation Keys (Switches) ...................................................................................................................... 6-3
Appendix A
Compatible Devices ..................................................................................................................... A-1
A.1 Smoke Detectors ..................................................................................................................................... A-1
A.1.1 Enhanced Mode ............................................................................................................................ A-1
A.1.2 Two-Wire Smoke Detectors ......................................................................................................... A-2
A.1.3 Four-Wire Smoke Detectors ......................................................................................................... A-4
A.2 Notification Appliances .......................................................................................................................... A-5
General Terms and Conditions ..........................................................................................................1
Repair and RA Procedure ..................................................................................................................1
Advanced Replacement Policy ..........................................................................................................1
Limited Warranty ..............................................................................................................................2
151051 1-1
Section 1
Overview
1.1 SK-2224 Description
The Model SK-2224 is a two zone, 24-volt fire control panel having the following features:
• Two Class B zones
• Two notification circuits rated at 1.25 amp each
• 2.5 amp power supply
• Dedicated alarm and trouble relays
• Auxiliary power output (.5 amp max.) for powering special applications, such as door
holders.
• Enhanced Verification Mode, a built-in feature that distinguishes two-wire smoke detec-
tors from pull stations.
• Housed in a 12-13/16"W x 15-1/8"H x 3-3/8"D metal cabinet
• Cabinet supports two 7.0 AH backup batteries
1.2 How to Contact Silent Knight
If you have a question or encounter a problem not covered in this manual, contact Silent
Knight Technical Support at 800-328-0103 (or 612-493-6455). To order parts, contact Silent
Knight Sales at 800-446-6444 (or 612-493-6435).
Model SK-2224 Fire Control Panel Installation/Operation Manual
1-2 151051
151051 2-1
Section 2
A
g
enc
y
Requirements
2.1 FCC Warning
This device has been verified to comply with FCC Rules Part 15. Operation is subject to the
two following conditions: (1) This device may not cause radio interference, and (2) This
device must accept any interference received, including interference that may cause undesired
operation.
2.2 Underwriters Laboratories (UL)
The SK-2224 is UL listed as a control unit for use in NFPA 72 systems. If the SK-2224 and
its accessories are to be used as part of a UL installation, carefully read the UL requirements
in this section. For more information on NFPA 72 standards, refer to the NFPA National Fire
Alarm Code, 1996 Edition.
2.2.1 Requirements for All Installations
General requirements are described in this section. When installing an individual device,
refer to the specific section of the manual for additional requirements.
1. All field wiring must be installed in accordance with NFPA 70 National Electric Code.
2. Use UL listed smoke detectors and notification appliances compatible with the SK-2224
from those specified in the Appendix to this manual.
3. If you are using the smoke verification feature:
• Do not use smoke detectors with built-in alarm verification.
• Select "Enhanced Mode" if the installation includes pull stations or water flow
switches.
4. A full system checkout must be performed any time the panel is programmed.
5. UL installations require use of Model 7628 EOL resistor assembly.
2.2.2 Requirements for Local Protected Fire Alarm
Systems
At least one UL listed supervised notification appliance must be used.
Model SK-2224 Fire Control Panel Installation/Operation Manual
2-2 151051
151051 3-1
Section 3
Before You Be
g
in Installin
g
3.1 What's in the Box?
The Model SK-2224 ships with the following hardware:
Note: See Section 3.7 for assembly instructions.
Table 3-1: Contents of Shipping Box
Main Part Containing Model
Number
Part Quantity/Item
1 Cabinet 122509
Panel Bag 1 Control Board 202224
1 Installation/
Operation Manual
151051
Hardware Bag
2 #8 Screws 119152
2 #8 Nuts 119538
3 Self-tapping Screws 119296
1 Earth Ground Wire 140668
1 Battery Wire Harness 130420
1 battery Jumper 140694
1 Transformer
120 Vrms @ 60Hz 115061
or a
230 Vrms at 50Hz 115031
1 Viewing Bezel 122508
4 End-of-line Resistors 111682
Model SK-2224 Fire Control Panel Installation/Operation Manual
3-2 151051
3.2 Optional Accessories
Table 3-2 is a list of optional accessories that can be used with the Model SK-2224 Fire
Control Panel.
* Requires a SK-2884 to operate with the SK-2224 control panel.
Table 3-2: Option Accessories for the SK-2224
Model
Number Name Description
SK-2884 Serial Driver Board Used to interface all SK-2224 expansion device to the SK-
2224 panel. Supports 1 Dialer (Model SK-2104) and any
combination of 4 LED Annunciators (Model SK-2865) or I/O
Modules (Model SK-2880).
*SK-2880 Input/Output (I/O) Module Used to drive customized annunciators and interface devices.
*SK-2865 LED Annunciator Remote LED annunciator with Silence and Reset keyswitch
inputs.
*SK-2104 Digital Dialer Used to communicate alarms, trouble and supervisories to
central station. Offers 5 different reporting formats 3/1, 4/2,
BFSK, SIA, and Contact ID.
7628 UL listed End-of-line
(EOL) Resistor.
EOL resistor required for UL installations.
Before You Begin Installing
151051 3-3
3.3 SK-2224 Board Layout
Figure 3-1 shows the SK-2224 circuit board including location of terminals, connectors, dip
switches, and LEDs.
Figure 3-1 Model SK-2224 Layout
Zone 2 Notification
Appliance
Circuits
Trouble &
Alarm Relays Auxiliary
Power
Output
Backup
Battery
Connector
AC Power
Connector
Annunciator
Programming
DIP Switches
On-Board
Piezo Sounder
SK-2884
Serial
Interface
Connector
Inputs
Model SK-2224 Fire Control Panel Installation/Operation Manual
3-4 151051
3.4 Electrical Specifications
Note: * When ordering, specify your voltage requirements.
3.5 Environmental Specifications
It is important to protect the SK-2224 control panel from water. To prevent water damage, the
following conditions should be AVOIDED when mounting the units:
• Do not mount directly on exterior walls, especially masonry walls (condensation)
• Do not mount directly on exterior walls below grade (condensation)
• Protect from plumbing leaks
• Protect from splash caused by sprinkler system inspection ports
• Do not mount in areas with humidity-generating equipment (such as dryers, production
machinery)
Table 3-3: Electrical Specifications
Circuit Rating
Primary AC *120 Vrms at 60 Hz, or 230 Vrms at 50 Hz
Total External DC Load 2.5A @ 24 VDC
+24V Auxiliary Power 19.8 V to 28.0 V, 0.5 A max.
Trouble & Alarm Relays 2.5 A @ 30 VDC resistive
Notification Appliance Power 19.8 V to 28.0 V, 1.25 A max. each
Smoke Detector Power 19.8 V to 28.0 V, 1.0 A max.
Battery Charging Voltage 27.0 - 27.6 V
Maximum Battery Charging Current 750 mA
Minimum Low Battery Detect 20.4 V
Minimum Low AC Detect 100 Vrms at 60 Hz, full load
Table 3-4: Environmental Specifications
Storage Temperature: -4° - 167° F (-20 - 75° C)
Operating Temperature: 32° - 120° F (0° - 49° C)
Humidity: 10 - 85% non-condensing
Before You Begin Installing
151051 3-5
3.6 Mounting the SK-2224
Read the environmental specifications in Section 3.5 before mounting the cabinet.
The panel should be accessible to main drop wiring runs. It should be mounted as close to the
center of the building as possible and located within a secured area, but should be accessible
for testing and service. End-users responsible for maintaining the panel should be able to hear
alarms and troubles. When selecting a location, keep in mind that the panel itself is the main
source of alarm and trouble annunciation.
Mount the cabinet so it is firmly secured to the wall surface. When mounting the cabinet on
concrete, especially when moisture is expected, attach a piece of 3/4-inch plywood to the
concrete surface and then attach the cabinet to the plywood. Also mount any other modules to
the plywood.
Follow these steps to mount the control panel cabinet:
1. Place the cabinet on the mounting surface, level the cabinet and mark the top two
mounting holes.
2. Screw the top two mount screws about 3/4 of the way into the mounting surface.
3. Hang the control panel cabinet on the top mounting screws through the top mounting
screw keyholes.
Figure 3-2 Cabinet Mounting Holes
4. Insert the bottom two mounting screws into the cabinet’s bottom mounting holes.
5. Tighten all four mounting screws until the cabinet is properly secured.
6. Insert all cabinet components. See Section 3.7.
Top Mounting
Screw Keyholes
Bottom
Mounting Holes
15”
11”
12-1/2”
Model SK-2224 Fire Control Panel Installation/Operation Manual
3-6 151051
3.7 Assembly
The components listed in Table 3-1 are all packed within the cabinet and require some
assembly. Follow these steps to assemble the components inside the cabinet:
1. Remove keys from small manila envelope taped to the top of the cabinet.
2. Unlock the cabinet door.
3. Remove the packing material and the SK-2224 components.
4. Snap the bezel into the opening in the front of the cabinet. See Figure 3-3.
Note: The bezel will fit in only one way.
Figure 3-3 The SK-2224 Assembly Diagram
5. With the two #8 screws and the two #8 nuts (with built in washers), mount the transformer
in the holes in the upper left hand corner of the cabinet. See Figure 3-3.
6. With the three self-trapping screws mount the control board on the cabinet stand-offs.
Note: See Section 4 for transformer connections and battery connections.
Side View of
Slotted Stand-Off
Bezel Insertion
Transformer
Installation
CPU Mounting
Screws
Before You Begin Installing
151051 3-7
3.8 Wiring Specifications
Induced noise (transfer of electrical energy from one wire to another) can cause false alarms
or interfere with control panel operation in other ways.
To avoid induced noise, follow these guidelines:
• Isolate input wiring from high current output and power wiring. Do not pull one multicon-
ductor cable for the entire panel. Instead, separate the wiring as follows:
High current input/output: AC power, speaker, and notification device wiring
Low current input/output: Annunciator and zone loop wiring
Audio input/output: Telephone wiring
• Do not pull wires from different groups through the same conduit. If you must run them
together, do so for as short a distance as possible or use shielded cable. Connect the shield
to circuit ground at the panel. You must route high and low voltages separately.
• Route the wiring within the cabinet around the perimeter of the cabinet. It should not cross
the printed circuit board where it could induce noise into the sensitive microelectronics or
pick up unwanted RF noise from the high speed circuits. See Figure 3-4 for an example.
• High frequency noise, such as that produced by the inductive reactance of a speaker or
bell, can also be reduced by running the wire through ferrite shield beads or by wrapping it
around a ferrite toroid.
Figure 3-4 Wire Routing Example
Model SK-2224 Fire Control Panel Installation/Operation Manual
3-8 151051
3.9 Calculating Current Draw and Standby Battery
This section is for helping you determine the current draw and standby battery needs for your
installation.
3.9.1 Worksheet Requirements
The following steps must be taken when determining SK-2224 current draw and standby
battery requirements.
Filling in the Current Draw Worksheet, Table 3-6 (Section 3.9.3)
1. For the SK-2224, the worst case current draw is listed for the panel and is recorded in the
table at Line A.
2. Add up the current draw for all smoke detectors and record in the table at Line B.
3. Add up all notification appliance loads and record in the table at Line C.
4. Any additional devices should be recorded at Line D.
5. Make sure that the alarm current without the panel (Lines B-D) does not exceed 2.5 A.
The total alarm current (including the panel, Lines A-D) should not exceed 2.75 A.
6. Complete the remaining instructions in Table 3-6 for determining battery size require-
ments.
3.9.2 Maximum Battery Standby Load
Table 3-5 shows the maximum battery standby load for the SK-2224 based on 24 hours of
standby. The standby load calculations of line D in the Current Draw Calculation Worksheet
(Table 3-6) must be less than the number shown in Table 3-5 for the battery size used and
standby hours required.
Table 3-5: Maximum Battery Standby Load
Rechargeable Battery Size Max. Load for 24 hrs.
Standby, 5 mins. Alarm
7 AH 270 mA
Before You Begin Installing
151051 3-9
3.9.3 Current Draw Worksheet
Use this worksheet to determine current requirements during alarm/battery standby operation.
(Copy this page if additional space is required.)
*Note:If you are using door holders, you do not need to consider door holder current for alarm/battery standby,
because power is removed during that time. However, during normal operation, door holders draw current
and must be included in the total current that can be drawn from the panel.
Table 3-6: Current Draw Calculations
Device Number of
Devices Current per Device Standby
Current Alarm
Current
For each device, use this formula: This Column X This column = Current per number of devices
SK-2224 Panel 1 Standby: 100 mA 100 mA
Alarm: 250 mA 250 mA
A Current Subtotals: 100 mA 250 mA
Smoke Detectors Refer to device manual for current ratings. See Appendix to this manual for
max. # per loop.
Standby: mA mA
Alarm: mA mA
Standby: mA mA
Alarm: mA mA
Standby: mA mA
Alarm: mA mA
B Current Subtotals: mA mA
Notification Devices Refer to device manual for number of devices and current ratings.
Standby: mA mA
Alarm: mA mA
Standby: mA mA
Alarm: mA mA
C Current Subtotals: mA mA
Accessory Devices
SK-2884 Standby: 10 mA mA
Alarm: 10 mA mA
SK-2865 Standby: 35 mA mA
Alarm: 75 mA mA
D Current Subtotals: mA mA
*Additional Devices
Standby: mA mA
Alarm: mA mA
Standby: mA mA
Alarm: mA mA
E Current Subtotals: mA mA
Total current rating of all devices in system (add A through E): mA mA
FTotal current ratings converted to amperes (x .001): A A
Model SK-2224 Fire Control Panel Installation/Operation Manual
3-10 151051
151051 4-1
Section 4
Hardware Installation
4.1 AC Power
At installation, connect the transformer AC inputs to the AC power source as shown in Figure
4-1. It may be necessary for a professional electrician to make this connection.
The AC inputs are rated as 120 VAC, 60 Hz or 230 VAC, 50 Hz. See Table 3-1 for more
information.
Figure 4-1 AC Power Connection
To AC
Power
White
Black
Green
Yellow
Control Panel
Transformer
Earth Ground
Model SK-2224 Fire Control Panel Installation/Operation Manual
4-2 151051
4.2 Battery Connection
The SK-2224 battery charge capacity is 7.0 AH. Use two 12V batteries of the same AH rating.
Determine the correct AH rating as per your current load calculation (see Table 3-6).
Wire batteries in series to produce a 24-volt equivalent. Do not parallel batteries to increase
the AH rating.
Note: The SK-2224 cabinet supports two 7.0 AH batteries.
Figure 4-2 Battery Connection
Battery jumper (P/N 140694),
shipped with the control panel.
Hardware Installation
151051 4-3
4.3 Initiation Circuit Installation
4.3.1 Contact Wiring
Wire normally open contacts as shown in Figure 4-3. This is the type of wiring that would
typically be used for water flow switches, heat detectors and other normally open devices.
Figure 4-3 N.O. Contact Wiring
4.3.2 Two-Wire Smoke Detector Wiring
Figure 4-4 shows how to connect two-wire smoke detectors to the SK-2224 loops. The figure
uses Silent Knight's SLK-24F with HSB-224 base as an example. You can use any detector
that has been UL listed for compatibility with the SK-2224. Refer to the Appendix for a list of
compatible devices. Refer to Section 5 for configuration options.
Figure 4-4 Two-Wire Smoke Detector Wiring
Model SK-2224 Fire Control Panel Installation/Operation Manual
4-4 151051
4.3.3 Four-Wire Smoke Detector
Figure 4-5 shows how to connect four-wire smoke detectors to the SK-2224 loops. The figure
uses Silent Knight's SLK-24F with HSC-4R base as an example. You can use any UL listed
device listed in Appendix A. Information on selecting zone configuration options is in
Section 5.
Figure 4-5 Four-Wire Smoke Detector Wiring
Hardware Installation
151051 4-5
4.3.4 Notification Circuit Installation
Notification appliances used with the SK-2224 must be UL listed for compatibility with the
SK-2224. Refer to the list in the Appendix at the end of this manual for a list of compatible
devices.
For proper operation, you must use polarized notification appliances with a model 7628 4.7k
ohm end-of-line (EOL) resistor on each loop. Select ANSI output pattern, if desired. Output is
configured as steady (continuous sound) for the factory default. See Section 5 for information
on changing the pattern.
Figure 4-6 Notification Circuit Installation
4.4 Alarm and Trouble Relays
The SK-2224 has built-in relays for alarm and trouble. The alarm relay is energized during
any alarm condition. The trouble relay is energized during any trouble or supervisory trouble
condition. Each relay has three terminals (N.O., Common, and N.C.). Refer to Figure 3-1 for
location of these terminals.
4.5 Auxiliary Power Circuit
The SK-2224 has a power limited auxiliary power circuit which can source up to .5A. The
terminal is labeled “AUX PWR”. Refer to Figure 3-1 for location of this terminal.
Model SK-2224 Fire Control Panel Installation/Operation Manual
4-6 151051
4.6 Door Release Wiring
Figure 4-7 shows how to configure a door release using an ESL DH series door holder.
Figure 4-7 Door Release Wiring
Hardware Installation
151051 4-7
4.7 Optional Accessories Installation
This section describes how to install the optional accessories compatible with the SK-2224
control panel.
4.7.1 Installing the Serial Driver Board (Model SK-2884)
The SK-2884 is required if the installation uses any SK-2224 expansion devices such as
Model SK2865 (LED Annunciator). The SK-2884 interfaces all the expansion devices to the
SK-2224 control panel.
Follow these steps to install the SK-2884 Serial Driver Board:
1. Unplug the AC power connector from the SK-2224 control panel. See Figure 4-1.
2. Unplug the backup battery connector from the SK-2224 control panel. See Figure 4-2.
3. Plug the SK-2884 Serial board on SK-2224 control panel by aligning the 4-pin connector
and the stand-offs with their respective receptors. See Figure 4-8.
Figure 4-8 SK-2884 Connector and Stand-off alignment
4. Reconnect the AC power connector to the SK-2224 control panel. See Figure 4-1.
5. Reconnect the backup battery connector to the SK-2224 control panel. See Figure 4-2.
Model SK-2224 Fire Control Panel Installation/Operation Manual
4-8 151051
Wiring the SK-2884 to an Expansion Device
The SK-2884 uses a three wire connection to all of the SK-2224 compatible expansion
devices (see Table 3-2).
Connect all the expansion devices to the SK-2884 as follows:
4.7.2 SK-2865 LED Annunciator Installation
This section describes how to install the SK-2865 LED annunciator. The SK-2865 is a
supervised serial device used as a remote LED annunciator unit for the SK-2224.
SK-2865 Electrical Specification
Wiring the SK-2865 to the SK-2884
Follow these steps to properly wire the SK-2865 to the SK-2884:
1. Unplug the AC power connector from the SK-2224 control panel. See Figure 4-1.
2. Unplug the backup battery connector from the SK-2224 control panel. See Figure 4-2.
Table 4-1: SK-2884 Wiring Connections
SK-2884
Terminals
To
SK-2224 Expansion
Device Terminal
--
++
D (Data) D (Data)
Circuit Rating
Max Loop Resistance:
Data 50Ω
-50
Ω
+50
Ω
Max. Current: Alarm: 75 mA
Standby: 35 mA
Operating Voltage: 24 VDC
Hardware Installation
151051 4-9
3. Terminate the wiring as shown in Figure 4-9. See also Table 4-2.
Figure 4-9 SK-2865 Connection to the SK-2884
Table 4-2: SK-2865 Wiring Connections
SK-2865
Terminals SK-2884 Terminals
D (Data) D (Data)
++
--
Supervised
Power Limited
SK-2884
SK-2865
Model SK-2224 Fire Control Panel Installation/Operation Manual
4-10 151051
Setting the SK-2865’s address
The range of valid addresses is 0-3. Each device requires a unique address. Set the dip
switches as shown in Table 4-3. See also Figure 4-9.
Mounting the SK-2865
The SK-2865 mounts into a standard 4” square electrical box.
Follow these steps to mount the SK-2865:
1. Make sure that the SK-2865 is properly wired to the control panel. See Figure 4-9.
2. Slide the printed annunciator label into place on the SK-2865. The label fits in between the
LEDs and the clear plastic plate.
3. Place the SK-2865 into the 4” square electrical box. See Figure 4-10.
Figure 4-10 Mounting the SK-2865
4. Place the cover plate over the top of the SK-2865 and align the holes. See Figure 4-10.
5. Insert the four cover plate screws into the four screw holes on the 4” square electrical box.
6. Screw the four cover plate screws into the cover plate until the cover plate fits firmly
against the SK-2865 and the electrical box. Do not over tighten.
Table 4-3: Addresses Per Dip Switch Setting
Dip Switch Position Equivalent
Address
Both Open (off) 0
One Closed (on) 1
Two Closed (on) 2
Both Closed (on) 3
Cover Plate
Screw
Cover Plate
Annunciator
Label In
Slide Printed
4” Square
Electrical Box
SK-2865
Hardware Installation
151051 4-11
Model SK-2224 Fire Control Panel Installation/Operation Manual
4-12 151051
151051 5-1
Section 5
S
y
stem Confi
g
uration
To configure the SK-2224 system set the dipswitch that controls the option you want to
select. The following chart shows how to program the dipswitches that control system, zone,
and notification appliance operation. Refer to Figure 3-1 for location of the dipswitches.
Important!
When you change a dipswitch, be sure to perform a system reset (press [RESET]) or power
down the panel. Dipswitch changes will have no effect until after the system has been reset.
Some switches are unused and are not referred to in this chart. Leave all unused switches in
their factory-programmed OFF position.
Table 5-1: System Configuration
To Enable For Zone 1 (DIP 1) For Zone 2 (DIP 1) DIP Position
Enhanced mode (dipswitch ON). Use when both pull
stations and detectors will be used in the same zone.
Normal mode (dipswitch OFF). Use when 4-wire smoke
detectors and smoke verification are used in the same zone.
SW1 SW6 ON = Enhanced
OFF = Normal
Alarm verification
Note: Do not use with smoke detectors that have verifica-
tion built-in.
SW 2 SW 7 ON = Verification zone
OFF = No verification
Zone Type Fire alarm SW 3 SW8 OFF
Supervisory SW 3 SW8 ON
Alarm delay options
Note: Alarm delay options is to be
used with water flow devices
only. If the device has a built-
in delay time the total delay
time (device delay + pro-
grammed delay) can not ex-
ceed 120 seconds.
No delay SW4
SW5
SW9
SW10
OFF
OFF
30 second delay SW4
SW5
SW9
SW10
ON
OFF
60 second delay SW4
SW5
SW9
SW10
OFF
ON
90 second delay SW4
SW5
SW9
SW10
ON
ON
To Enable For NAC 1 (DIP 2) For NAC 2 (DIP 2) DIP Position
Silencing SW 1 SW 3 ON = Can be silenced
OFF = No silence
ANSI pattern SW 2 SW 4 ON = ANSI
Off = Steady
Model SK-2224 Fire Control Panel Installation/Operation Manual
5-2 151051
* Digital Dialer not available at this time.
To Enable For Entire Panel
(DIP 2) DIP Position
Serial Accessory Devices
SW5
ON = Serial Annunciator connected to the
control panel.
OFF = No Serial Annunciator connected to the
control panel.
*SW6
ON = Serial Dialer connected to the control
panel
OFF = No Serial Dialer connected to the
control panel.
AC loss report delay SW7
ON = 6 hour delay on AC loss report.
OFF = No delay on AC (for dialer testing only).
Note: If there is not a serial dialer connected
to the control panel this should be set to
the OFF position.
SW8 Not Used.
Table 5-1: System Configuration
151051 6-1
Section 6
S
y
stem Operation
The annunciator on the SK-2224 board is used for all system operation. It contains the
switches for enabling silencing, resetting, and so on. The LEDs that indicate system status are
also located on the annunciator.
Figure 6-1 On-Board Annunciator
6.1 Meaning of LEDs
The chart below explains the meaning of LEDs on the system board.
Table 6-1: Meaning of LEDs
LED (Color) Function Comments
AC (green) ON = Good AC
OFF = Low AC trouble condition and it was
acknowledged
FLASHING = Unacknowledged AC Low trouble
condition
If flashing, press the ACK button to acknowledged
the condition.
GENERAL TROUBLE
(yellow)
ON = System trouble
OFF = System OK
FLASHING = At least one serial device is in trouble
DOUBLE FLASHING = Two types of serial devices
are in trouble.
WALK TEST (yellow) ON = Walk test is in progress
OFF = Walk test is off
FLASHING = Walk test is on and at least one zone is
faulted or not ready
Allow approximately 47 seconds between detector
tests.
In walk test, when a detector is tripped, it will
cause an alarm for two seconds, then the control
panel will drop power to the loop for seven
seconds to reset the detector. Then an additional 38
seconds is needed to restore the detector.
If verification is used, the time between detector
test will be about 1 minute and 30 seconds.
Model SK-2224 Fire Control Panel Installation/Operation Manual
6-2 151051
GND FAULT (yellow) ON = Ground fault condition exists and was
acknowledged
OFF = No fault
FLASHING = A ground fault condition detected
If flashing, press the ACK button to acknowledged
the condition.
LOW BATTERY (yellow) ON = Battery low condition that has been
acknowledged
OFF = Good battery condition
FLASHING = Battery low condition
If flashing, press the ACK button to acknowledged
the condition.
ZONE 1
and
ZONE 2
ALARM (red) ON = Zone in alarm which has been acknowledged
OFF = No Alarm
FLASHING = Zone in alarm has not yet been
acknowledged.
If flashing, press the ACK button to acknowledged
the condition.
SUPERVISORY
(yellow)
ON = Zone has a supervisory condition (self-
restoring condition)
OFF = No supervisory condition exists.
FLASHING = supervisory trouble detected on that
zone.
If flashing, press the ACK button to acknowledged
the condition.
TROUBLE
(yellow)
ON = Zone has a trouble condition which has been
acknowledged
OFF = No zone trouble
FLASHING = Zone has a trouble condition
DOUBLE FLASHING = Zone was disabled
If flashing, press the ACK button to acknowledged
the condition.
CLEAN ME FLASHING = Indicates that the smoke
detector needs cleaning
A “Clean Me Flash” is a flash with a long LED
“on” Time and a short LED “off” time indicating
that the smoke detector needs cleaning. Applies
only to smoke detectors with the CLEAN ME
feature. The “Clean Me” flash starts after the
trouble condition has been acknowledge.
NAC 1
and
NAC 2
ACTIVE (yellow) ON = NAC is active during an alarm
OFF = NAC is not active during alarm
TROUBLE
(yellow)
ON = NAC has a trouble condition and was
acknowledged
OFF = No trouble condition
FLASHING = NAC is in trouble
DOUBLE FLASHING = Circuit was disabled
If flashing, press the ACK button to acknowledged
the condition.
SYSTEM SILENCED
(yellow)
ON = System audio output has been silenced
OFF = Nothing silenced
FLASHING = Partially silenced
When condition that caused audio activation
clears, this condition will clear automatically.
Note:
Silencing an alarm will cause a gen-
eral trouble condition.
Table 6-1: Meaning of LEDs
LED (Color) Function Comments
System Operation
151051 6-3
6.2 Operation Keys (Switches)
All system operations are performed from the on-board keys (switches) as described in the
chart below. Table 6-2: Operations and Instructions
Operation Keystrokes
Disable notification appliance
circuit.
To re-enable the circuit, press [NAC
DISABLE] again.
Press the appropriate [NAC DISABLE] key. The NAC circuit will be disabled and
the corresponding TROUBLE LED will Double Flash. This function is not
available during an alarm condition.
Disable a zone
To re-enable the circuit, press
[ZONE DISABLE] again.
Press the appropriate [ZONE DISABLE] key. The zone will be disabled and the
corresponding TROUBLE LED will Double Flash. This function is not available
during an alarm or supervisory condition.
Begin Walk Test Press [WALK TEST]. Walk Test LED turns on.
Note:
Walk test will not activate if the control panel has a trouble, alarm,
or supervisory condition.
End Walk Test
(The test ends automatically after 10
minutes of no system activity.)
Press [WALK TEST].
NOTE: The Walk Test feature is not operational during an alarm, supervisory or
any system trouble condition.
Acknowledge condition (alarm,
supervisory, trouble)
Press [ACK]. The corresponding LED will change from blinking to steady for the
duration of the condition.
Silence Panel Press [SILENCE]. This will silence the on-board PZT and all active NAC circuits
that have been configured as "silenceable".
Perform system reset Press [RESET]. Resets alarms, supervisories, troubles and all LEDs.
Model SK-2224 Fire Control Panel Installation/Operation Manual
6-4 151051
151051 A-1
Appendix A
Compatible Devices
This section of the manual lists devices (smoke detectors and notification appliances) that are
compatible with the SK-2224. Contact Silent Knight if you have a question about whether a
device not listed here is compatible.
A.1 Smoke Detectors
This section of the manual contains information about smoke detectors that are compatible
with the SK-2224.
Note: The maximum number of smoke detectors per zone is determined by both the current draw and the imped-
ance of the smoke detector. If too many smoke detectors are used on any zone, false alarms could occur.
Do not mix different models of detectors on any zone; false alarms could occur.
A.1.1 Enhanced Mode
Enhanced mode allows the installer to use pull stations on a loop that has been programmed
for Enhanced Alarm Verification. If a single detector goes into alarm it will start the alarm
verification cycle. If a pull station is activated any time during the alarm verification cycle and
after the control panel re-applies loop power (power will drop for seven seconds to restore
detector during verification), the panel will go into immediate alarm and discontinue the
verification cycle.
Warning! Do not mix different models or manufacturers of smoke detectors on the input loops.
SK-2224
Identifier 24F
Voltage Range 16.2 - 27.3 VDC
Model SK-2224 Fire Control Panel Installation/Operation Manual
A-2 151051
A.1.2 Two-Wire Smoke Detectors
The table below lists two-wire smoke detectors that are compatible with the SK-2224. The
table is organized by manufacturer. The columns show the number of detectors per loop that
can be used.
Note: The check mark by manufacturers name indicates that this device can be used in enhanced mode.
Table A-1: Compatible Two-Wire Smoke Detectors
Manufacturer Enhance
Mode
Compatible
Model Name or Number
(Base model name or number in
parentheses.)
Compatibility ID # per Loop
Head Base
Apollo 55000-350 (45681-200) 55000-350 45681-200 24 / loop
55000-250 (45681-200) 55000-250 45681-200 24 / loop
Detection Systems
DS200 (MB200-2W) A B 24 / loop
DS200HD (MB200-2W) A B 24 / loop
DS250 (MB2W or MB2WL) B A 18 / loop
DS250HD (MB2W or MB2WL) B A 18 / loop
DS250TH (MB2W or MB2WL) B A 18 / loop
ESL
425 S10 N/A 40 / loop
425C S10 N/A 40 / loop
425CR S10 N/A 40 / loop
425CRT S10 N/A 40 / loop
425CT S10 N/A 40 / loop
429C (S10A) N/A S10A 30 / loop
429CRT (S11A) N/A S11A 30 / loop
429CST (S11A) N/A S11A 30 / loop
429CT (S10A) N/A S10A 30 / loop
609U01-11 S10 S00 40 / loop
609U02-11 S10 S00/S03 40 / loop
611U (601U or 602U) S10 S00/S03 40 / loop
611UD (601U or 602U) S10 S00/S03 40 / loop
ESL
(Cont.)
611UT (601U or 602U) S10 S00/S03 40 / loop
612U (601U or 602U) S10 S00/S03 40 / loop
612UD (601U or 602U) S10 S00/S03 40 / loop
711U (701E or 701U) N/A S10A 25 / loop
712U (701E or 701U) N/A S10A 25 / loop
713-5U (702E or 701U) N/A S10A 25 / loop
713-6U (702E or 701U) N/A S10A 25 / loop
721-U (S10A) N/A S10A 30 / loop
721-UT (S10A) N/A S10A 30 / loop
151051 A-3
Falcon 525 FDT1 N/A 17 / loop
525T FDT1 N/A 17 / loop
Hochiki
SIH-24F (HS-224D or HSB-224) HD-3 HB-5 25 / loop
SLK-24F (HS-224D) HD-3 HB-5 25 / loop
SLK-24FH (HS-224D) HD-3 HB-5 25 / loop
System Sensor
1100 A N/A 20 / loop
1100T A N/A 20 / loop
1100TB A N/A 20 / loop
1151 (110LP) A A 20 / loop
1400 A N/A 20 / loop
1451 (B401B) A A 20 / loop
1800 A N/A 20 / loop
1851B (B101B) A N/A 20 / loop
1851DH (DH1851DC) A N/A 20 / loop
2100 A N/A 20 / loop
2100T A N/A 20 / loop
2100TB A N/A 20 / loop
2151 (B110LP or B110LRP) A A 20 / loop
2300T A N/A 20 / loop
2300 A N/A 20 / loop
2300TB A N/A 20 / loop
2400 A N/A 20 / loop
2400 (DH400) A N/A 20 / loop
2400AIT A N/A 20 / loop
2400AT A N/A 20 / loop
2400TH A N/A 20 / loop
2451 (B401B) A N/A 20 / loop
System Sensor
(Cont.)
2451DH (DH 400) A N/A 20 / loop
2451TH (B401B) A N/A 20 / loop
2800 A N/A 20 / loop
2800TH A N/A 20 / loop
2851B (B101B) A A 20 / loop
2851BTH (B101B) A A 20 / loop
2851DH A A 20 / loop
2851TH (B101B) A A 20 / loop
Table A-1: Compatible Two-Wire Smoke Detectors
Manufacturer Enhance
Mode
Compatible
Model Name or Number
(Base model name or number in
parentheses.)
Compatibility ID # per Loop
Head Base
Model SK-2224 Fire Control Panel Installation/Operation Manual
A-4 151051
A.1.3 Four-Wire Smoke Detectors
Table A-2: Compatible Four-Wire Smoke Detectors
Manufacturer Model
Silent Knight SD-P24F with SD-B4@ base
Detection Systems DS200/DS200HD
MB200
ESL 445 Series
449 Series
Gentex 624
824
2040-24 Power Supervision Unit
System Sensor 1851B
2851/2851BTH
DH200ADCD
151051 A-5
A.2 Notification Appliances
The chart below lists notification appliances compatible with the SK-2224.
Table A-3: Compatible Notification Devices
Manufacturer Model Type
Amseco K-MB-6P 6” Bell
Amseco K-MB-8P 8” Bell
Amseco K-MB-10P 10” Bell
Faraday 446X 12/24VDC Vibrating Bell
Faraday 476X 12/24VDC Vibrating Bell
Faraday 477X 12/24VDC Single Stroke Bell
Faraday 5303B-0-14-( )-DC Chime (flush)
Faraday 5304B-0-14-( )-DC Chime (surface)
Faraday 5305B-0-4-( )-DC Chime (ceiling)
Faraday 5306B-0-14-( )-24-DC Chime/Strobe (flush)
Faraday 5307B-0-14-( )-24-DC Chime/Strobe (surface)
Faraday 5308B-0-4-( )-24-DC Chime/Strobe (ceiling)
Faraday 5333B-0-14-24-DC Multi-Tone Horn (flush)
Faraday 5334B-0-14-24-DC Multi-Tone Horn (surface)
Faraday 5336B-( )-14-24-DC Multi-Tone Horn/Strobe (flush)
Faraday 5337B-( )-14-24-DC Multi-Tone Horn/Strobe (surface)
Faraday 5338B-( )-4-24-DC Multi-Tone Horn/Strobe (ceiling)
Faraday 5343B-0-14-24-DC Single Tone Horn/Strobe (flush)
Faraday 5344B-0-14-24-DC Single Tone Horn/Strobe (surface)
Faraday 5345B-0-4-24-DC Single Tone Horn/Strobe (ceiling)
Faraday 5348B-( )-4-24-DC Single Tone Horn/Strobe (ceiling)
Faraday 5373B-0-14-24-DC 8-Tone Horn/Strobe (flush)
Faraday 5374B-0-14-24-DC 8-Tone Horn/Strobe (surface)
Faraday 5375B-0-4-24-DC 8-Tone Horn/Strobe (ceiling)
Faraday 5376B-0-14-24-DC 8-Tone Horn/Strobe (flush)
Faraday 5377B-0-14-24-DC 8-Tone Horn/Strobe (surface)
Faraday 5378B-0-4-24-DC 8-Tone Horn/Strobe (ceiling)
Faraday 5405B-0-14-24-DC Sync Control Unit
Model SK-2224 Fire Control Panel Installation/Operation Manual
A-6 151051
Faraday 5508B-( )-14-24-DC Single Gang Sync Strobe (flush)
Faraday 5521B-( )-14-24-DC 4” Square Sync Strobe (surface)
Faraday 5522B-( )-14-24-DC 4” Square Sync Strobe (flush)
Faraday 6126B-U-14-24 VDC Horn/Strobe
Faraday 6223B-0-14-24-DC Horn (flush)
Faraday 6224B-0-14-24-DC Horn (surface)
Faraday 6225B-0-4-24-DC Horn (ceiling)
Faraday 6226B-( )-14-24-DC Horn/Strobe (flush)
Faraday 6227B-( )-14-24-DC Horn/Strobe (surface)
Faraday 6228B-( )-4-24-DC Horn/Strobe (ceiling)
Faraday 6243B-0-14-24-DC Electron-Mechanical Horn (flush)
Faraday 6244B-0-14-24-DC Electron-Mechanical Horn (surface)
Faraday 6245B-0-4-24-DC Electron-Mechanical Horn (ceiling)
Faraday 6246B-( )-14-24-DC Electron-Mechanical Horn/Strobe (flush)
Faraday 6247B-( )-14-24-DC Electron-Mechanical Horn/Strobe (surface)
Faraday 6248B-( )-4-24-DC Electron-Mechanical Horn/Strobe (ceiling)
Faraday 6300B-0-14-24-DC Mini-Horn (flush)
Faraday 6301B-0-14-24-DC Mini-Horn (surface)
Faraday 6302B-( )-4-24-DC Mini-Horn (ceiling)
Faraday 6310B-0-14-24-DC Mini-Horn/Strobe/Strobe (flush)
Faraday 6311B-0-14-24-DC Mini-Horn/Strobe/Strobe (surface)
Faraday 6312B-( )-14-24-DC Mini-Horn/Strobe/Strobe (ceiling)
Faraday 6320B-0-14-24-DC Sync Mini Horn/Strobe (1 gang)
Faraday 6321B-0-14-24-DC Sync Mini Horn/Strobe (1,2 gang)
Faraday 6322B-( )-14-24-DC Mini Horn/Sync Strobe (1,2 gang, 4SQ)
Federal Signal 450 Horn
Federal Signal VALS Horn/Strobe
Gentex GX90-4 Horn
Gentex GXS-4-15-1 Strobe
Gentex GXS-4-1575 Strobe
Gentex GX90S-4-15 Horn
Gentex GX90S-4-1575 Horn
Table A-3: Compatible Notification Devices
Manufacturer Model Type
151051 A-7
Gentex HG124 Horn
Gentex SHG24-1575 Horn/Strobe
Gentex SHG24-15 Horn/Strobe
Gentex GMH-24-X Horn
Gentex GMS-24-X Horn/Strobe
Gentex GMS-24-X Horn/Strobe
Gentex G0T24 Horn
Gentex G0S24-X Horn
Gentex WGMS-24-X Horn/Strobe
System Sensor MASS241 Horn/Strobe
System Sensor MASS24110ADA Horn/Strobe
System Sensor MASS2415ADA Horn/Strobe
System Sensor MASS2475ADA Horn/Strobe
System Sensor SS4110ADA Strobe
System Sensor SS2415ADA Strobe
System Sensor SS2475ADA Strobe
System Sensor PS2415ADA Mini-Horn/Strobe
System Sensor PS241575ADA Mini-Horn/Strobe
System Sensor PS24110ADA Mini-Horn/Strobe
System Sensor PS2475ADA Mini-Horn/Strobe
Wheelock 46T-G4-24-R Bell
Wheelock 46T-G6-24-R Bell
Wheelock 46T-G10-24-R Bell
Wheelock 46T-G6-24-WS-24-HF-R Strobe/Bell
Wheelock 46T-G10-24-WS-24-HF-R Strobe/Bell
Wheelock 46T-G6-24-WH-24-HF-R Strobe/Bell
Wheelock 46T-G10-24-WH-24-HF-R Strobe/Bell
Wheelock 7001T-12\24-W-FR Strobe Horn
Wheelock 7002T-12\24-W-FR Strobe Horn
Wheelock AES-DL1-R Multitone Horn
Wheelock AES-EL1-R Multitone Horn
Wheelock AES-DL1-WS-24-VF-R Multitone Horn
Table A-3: Compatible Notification Devices
Manufacturer Model Type
Model SK-2224 Fire Control Panel Installation/Operation Manual
A-8 151051
Wheelock AES-EL1-WS-24-VF-R Multitone Horn
Wheelock AES-DL1-WH-24-VF-R Multitone Horn
Wheelock AES-EL1-WH-24-VF-R Multitone Horn
Wheelock AES-DL1-WM-24-VF-R Multitone Horn
Wheelock AES-EL1-WM-24-VF-R Multitone Horn
Wheelock AH-24-R Horn
Wheelock AH-24WP-R Horn
Wheelock AMT-12\24-R Strobe Horn
Wheelock AMT-24-LS-VFR Strobe Horn
Wheelock AMT-24-LSM-VFR Strobe Horn
Wheelock AMT-24-IS-VFR Strobe Horn
Wheelock AS2415W-FR Audible Strobe
Wheelock AS241575W-FR Audible Strobe
Wheelock AS2430W-FR Audible Strobe
Wheelock AS2475W-FR Audible Strobe
Wheelock AS24110W-FR Audible Strobe
Wheelock AS2415C-FW Audible Strobe
Wheelock AS2430C-FW Audible Strobe
Wheelock AS2475C-FW Audible Strobe
Wheelock AS24100C-FW Audible Strobe
Wheelock AS-2415-VFR Strobe Horn
Wheelock AS-241575-VFR Strobe Horn
Wheelock AS-2430-VFR Strobe Horn
Wheelock AS-2475-VFR Strobe Horn
Wheelock AS-24110-HFR Strobe Horn
Wheelock SM-12/24-R Strobe Horn Controller
Wheelock DSM-12/24-R Strobe Horn Controller
Wheelock CF-BF1 Chime
Wheelock CF-BF1-R Chime
Wheelock CH70-24-R Chime
Wheelock CH90-24-W Chime
Wheelock CH70-2415W-FR Chime Strobe
Table A-3: Compatible Notification Devices
Manufacturer Model Type
151051 A-9
Wheelock CH70-241575W-FR Chime Strobe
Wheelock CH70-2430W-FR Chime Strobe
Wheelock CH70-2475W-FR Chime Strobe
Wheelock CH70-24110W-FR Chime Strobe
Wheelock CH-CF1 Chime
Wheelock CH-CF1-R Chime
Wheelock CH-CF1-W Chime
Wheelock CH-DF1 Chime
Wheelock CH-DF1-R Chime
Wheelock CH-BF1-WS-24-HF-R Strobe Chime
Wheelock CH-CF1-LS-24 Strobe Chime
Wheelock CH-CF1-MS-24 Strobe Chime
Wheelock CH-CF1-IS-24 Strobe Chime
Wheelock CH-CF1-LS-24-CFW Strobe Chime
Wheelock CH-CF1-MS-24-CFW Strobe Chime
Wheelock CH-CF1-IS-24-CFW Strobe Chime
Wheelock CH-CF1-WS-24-CF-W Strobe Chime
Wheelock CH-DF1-LS-24 Strobe Chime
Wheelock CH-DF1-MS-24 Strobe Chime
Wheelock CH-DF1-IS-24 Strobe Chime
Wheelock CH-DF1-LS-24-VFR Strobe Chime
Wheelock CH-DF1-LSM-24-VFR Strobe Chime
Wheelock CH-DF1-MS-24-VFR Strobe Chime
Wheelock CH-DF1-IS-24-VFR Strobe Chime
Wheelock CH-DF1-WM-24-VFR Strobe Chime
Wheelock CH-DF1-WS-24-VF-R Strobe Chime
Wheelock DSM-12/24 Sync Module
Wheelock EH-DL1-R Electronic Horn
Wheelock EH-EL1-R Electronic Horn Electronic Horn
Wheelock EHS-DL1-W-VF-R Strobe Horn (single input)
Wheelock EHS-EL1-W-VF-R Strobe Horn (single input)
Wheelock EH-DL1-WS-24-VF-R Strobe Horn (dual input)
Table A-3: Compatible Notification Devices
Manufacturer Model Type
Model SK-2224 Fire Control Panel Installation/Operation Manual
A-10 151051
Wheelock EH-EL1-WS-24-VF-R Strobe Horn (dual input)
Wheelock EH-DL1-WH-24-VF-R Strobe Horn (dual input)
Wheelock EH-EL1-WH-24-VF-R Strobe Horn (dual input)
Wheelock EH-DL1-WM-24-VF-R Strobe Horn (dual input)
Wheelock EH-EL1-WM-24-VF-R Strobe Horn (dual input)
Wheelock HSW-24-HFR Remote Strobe
Wheelock HS2W-24-HFR Remote Strobe
Wheelock HSPW-24-HFR Remote Strobe
Wheelock IS-24-VFR Remote Strobe
Wheelock IS1-24-VFR Remote Strobe
Wheelock IS3-24-VFR Remote Strobe
Wheelock ISP-24-HFR Remote Strobe
Wheelock LS-24-VFR Remote Strobe
Wheelock LS1-24-VFR Remote Strobe
Wheelock LS3-24-VFR Remote Strobe
Wheelock LSP-24-HFR Remote Strobe
Wheelock LSM-24-VFR Remote Strobe
Wheelock LS1M-24-VFR Remote Strobe
Wheelock LS3M-24-VFR Remote Strobe
Wheelock LSPM-24-VFR Remote Strobe
Wheelock MS-24-VFR Remote Strobe
Wheelock MS1-24-VFR Remote Strobe
Wheelock MS3-24-VFR Remote Strobe
Wheelock MSP-24-HFR Remote Strobe
Wheelock MB-G6-24-R Motor Bell
Wheelock MB-G10-24-R Motor Bell
Wheelock MBS-G6-24-W-HF-R Motor Bell with Strobe
Wheelock MBS-G10-24-W-HF-R Motor Bell with Strobe
Wheelock MIZ-24-R Mini-Horn
Wheelock MIZ-24-W Mini-Horn
Wheelock MIZ-24-LS-VFR Mini-Horn/Strobe
Wheelock MIZ-24-LSM-VFR Mini-Horn/Strobe
Table A-3: Compatible Notification Devices
Manufacturer Model Type
151051 A-11
Wheelock MIZ-24-MS-VFR Mini-Horn/Strobe
Wheelock MIZ-24-HSW-HFR Mini-Horn/Strobe
Wheelock MIZ-24-IS-VFR Mini-Horn/Strobe
Wheelock MIZ-24-WS-VF-R Mini-Horn/Strobe
Wheelock MIZ-24-WS-VF-W Mini-Horn/Strobe
Wheelock MIZ-24-WH-VF-W Mini-Horn/Strobe
Wheelock MIZ-24-WM-VF-W Mini-Horn/Strobe
Wheelock MT-12/24-R Strobe Horn
Wheelock MT4-12/24-R Multitone Appliance
Wheelock MT4-115-R Multitone Appliance
Wheelock MT-24-LS-VFR Strobe Horn
Wheelock MT-24-LSM-VFR Strobe Horn
Wheelock MT-24-MS-VFR Strobe Horn
Wheelock MT-24-IS-VFR Strobe Horn
Wheelock MT-24-SL-VFR Strobe Horn
Wheelock MT-24-SLM-VFR Synch. Multitone Strobe
Wheelock MT-24-WM Strobe
Wheelock MT-24-WM-VF-R Horn
Wheelock MT-24-WM-VFR Strobe Horn
Wheelock NH-12/24-R Horn
Wheelock NS-2415W-FR Strobe Horn
Wheelock NS-241575W-FR Strobe Horn
Wheelock NS-2430W-FR Strobe Horn
Wheelock NS-2475W-FR Strobe Horn
Wheelock NS-24110W-FR Strobe Horn
Wheelock NS4-2415W-FR Strobe Horn
Wheelock NS4-241575W-FR Strobe Horn
Wheelock NS4-2430W-FR Strobe Horn
Wheelock NS4-2475W-FR Strobe Horn
Wheelock NS4-24110W-FR Strobe Horn
Wheelock RS-2415W-FR Strobe
Wheelock RS-2415W-FR Strobe
Table A-3: Compatible Notification Devices
Manufacturer Model Type
Model SK-2224 Fire Control Panel Installation/Operation Manual
A-12 151051
Wheelock RS-241575W-FR Strobe
Wheelock RS-2415-HFR Strobe
Wheelock RSP-2415-VFR Strobe
Wheelock RS-241575-VFR Strobe
Wheelock RSP-241575-VFR Strobe
Wheelock RS-2430-VFR Strobe
Wheelock RS-2430-HFR Strobe
Wheelock RS-2475-VFR Strobe
Wheelock RSP-2475-HFR Strobe
Wheelock RS-24110-HFR Strobe
Wheelock RSP-24110-HFR Strobe
Wheelock RSS-2415W-FR Strobe
Wheelock RSS-241575W-FR Strobe
Wheelock RSS-2430W-FR Strobe
Wheelock RSS-2475W-FR Strobe
Wheelock RSS-24110W-FR Strobe
Wheelock RSS-2415C-FW Strobe
Wheelock RSS-2430C-FW Strobe
Wheelock RSS-2475C-FW Strobe
Wheelock RSS-24100C-FW Strobe
Wheelock RSSP-2415W-FR Strobe
Wheelock RSSP-241575-FR Strobe
Wheelock RSSP-2430W-FR Strobe
Wheelock RSSP-2475W-FR Strobe
Wheelock RSSP-24110W-FR Strobe
Wheelock SL-24-VFR Synchronized Remote Strobe
Wheelock SL1-24-VFR Synchronized Remote Strobe
Wheelock SL3-24-VFR Synchronized Remote Strobe
Wheelock SLP-24-VFR Synchronized Remote Strobe
Wheelock SLM-24-VFR Synchronized Remote Strobe
Wheelock SL1M-24-VFR Synchronized Remote Strobe
Wheelock SL3M-24-VFR Synchronized Remote Strobe
Table A-3: Compatible Notification Devices
Manufacturer Model Type
151051 A-13
Wheelock SLPM-24-VFR Synchronized Remote Strobe
Wheelock SHW-24-VFR Synchronized Remote Strobe
Wheelock SH2W-24-VFR Synchronized Remote Strobe
Wheelock SHPW-24-VFR Synchronized Remote Strobe
Wheelock SCM-24-R Controller for Synchronized Strobes
Wheelock SM-12/24-R Sync Module
Wheelock SR-2415-VFR Sync Strobe
Wheelock SRP-2415-HFR Sync Strobe
Wheelock SR-241575-VFR Sync Strobe
Wheelock SRP-241575-VFR Sync Strobe
Wheelock SR-2475-VFR Sync Strobe
Wheelock SR-2475-HFR Sync Strobe
Wheelock SR-24110-HFR Sync Strobe
Wheelock SRP-24110-HFR Sync Strobe
Wheelock V7001T-12\24-W-FR Strobe Horn
Wheelock WM3T-24-FR Remote Strobe
Wheelock WM3T-24-VFR Remote Strobe
Wheelock WS1T-24-FR Strobe
Wheelock WS3T-24-FR Strobe
Wheelock WST-24-FR Strobe
Table A-3: Compatible Notification Devices
Manufacturer Model Type
Model SK-2224 Fire Control Panel Installation/Operation Manual
A-14 151051
151051
Silent Knight Fire Product Warranty and Return Policy
General Terms and Conditions
• All new fire products manufactured by Silent Knight after September 1, 1997 have a
limited warranty period of 18 months from the date of manufacture against defects in
materials and workmanship. See limited warranty statement for details.
• This limited warranty does not apply to those products that are damaged due to misuse,
abuse, negligence, or have been modified in any manner whatsoever.
Repair and RA Procedure
• All products that are returned to Silent Knight for credit or repair require a RA (Return
Authorization) number. Call Silent Knight Customer Service at 800-446-6444 or 612-493-
6435 between 8:00 A.M. and 5:00 P.M. CST, Monday through Friday to obtain a return
authorization number. Silent Knight Technical Support is available at 800-328-0103
between 8:00 A.M. and 7:00 P.M. CST, Monday through Friday.
• RA number must be prominently displayed on the outside of the shipping box. See return
address example under Advanced Replacement Policy.
• All products returned to Silent Knight must be sent freight pre-paid. After product is
processed, Silent Knight will pay for shipping product back to customer.
• Return the Silent Knight product circuit board only. Products that are returned in cabinets
will be charged an additional $20 to cover the extra shipping and handling costs over
board only returns. Do not return batteries. Silent Knight has the authority to determine if
a product is repairable. Products that are deemed un-repairable will be returned to the
customer.
• Product that is returned that has a board date code more than 18 months from date of
manufacture will be repaired and the customer will be assessed the standard Silent Knight
repair charge for that model.
• A detailed description of the problem should be included with each return.
Advanced Replacement Policy
• Silent Knight offers an option of advance replacement for fire product printed circuit
boards that fail during the 18 month warranty period.
• For advance replacement of a defective board call Silent Knight at 800-446-6444 or
612-493-6435 to obtain a RA (Return Authorization) number and request advanced
replacement.
• Customers must use a MasterCard or Visa credit card to get an advance replacement.
Model SK-2224 Fire Control Panel Installation/Operation Manual
151051
• A new or refurbished board will be shipped to the customer. The customer will initially be
billed for the replacement board but a credit will be issued after the repairable board is
received at Silent Knight.
• The defective board must be returned within 30 days of shipment of replacement board for
customer to receive credit. No credit will be issued if the returned board was damaged due
to misuse or abuse.
• Repairs and returns should be sent to:
Silent Knight
Attn: Repair Department
7550 Meridian Circle
Maple Grove, MN 55369-4927
RA Number:___________________
Limited Warranty
Silent Knight warrants that the products of its manufacture shall be free from defects in materials or
workmanship for 18 months from the manufacturing date code on the printed circuit board, if such
goods have been properly installed, are subject to normal proper use, and have not been modified in
any manner whatsoever. Upon return of the defective product to the nearest Silent Knight, Silent
Knight will, at its sole discretion, either repair or replace, at no cost, such goods as may be of defective
material or workmanship. Customers outside the United States are to return products to their
distributor for repair.
SILENT KNIGHT SHALL NOT UNDER ANY CIRCUMSTANCES BE LIABLE FOR ANY
INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM LOSS OF PROPERTY OR
OTHER DAMAGE OR LOSSES OWING TO THE FAILURE OF SILENT KNIGHT SECURITY
SYSTEMS PRODUCTS BEYOND THE COST OF REPAIR OR REPLACEMENT OF ANY
DEFECTIVE PRODUCTS.
SILENT KNIGHT MAKES NO WARRANTY OF FITNESS OR MERCHANTABILITY AND NO
OTHER WARRANTY, ORAL OR WRITTEN, EXPRESS OR IMPLIED, BEYOND THE 18
MONTH WARRANTY EXPRESSLY SPECIFIED HEREIN.
Cut Along the Dotted Line
SK-2224 Basic Operating Instructions P/N 151055
These instructions must be framed and displayed next to the SK-2224 panel in accordance
with NFPA 72 fire code for Local Fire Alarm System.
LED (Color) Function
AC (green) ON = Good AC
OFF = Low AC trouble condition and it was acknowledged
FLASHING = Unacknowledged AC Low trouble condition
GENERAL TROUBLE
(yellow)
ON = System trouble
OFF = System OK
FLASHING = At least one serial device is in trouble
DOUBLE FLASHING = Two types of serial devices are in trouble.
WALK TEST (yellow) ON = Walk test is in progress
OFF = Walk test is off.
FLASHING = Walk test is on and at least one zone is not ready
GND FAULT (yellow) ON = Ground fault condition exists and was acknowledged
OFF = No fault
FLASHING = A ground fault condition detected
LOW BATTERY (yellow) ON = Battery low condition that has been acknowledged
OFF = Good battery condition
FLASHING = Battery low condition
ZONE 1
and
ZONE 2
ALARM (red) ON = Zone in alarm which has been acknowledged
OFF = No Alarm
FLASHING = Zone in alarm has not yet been acknowledged.
SUPERVISORY
(yellow)
ON = Zone has a supervisory condition (self-restoring condition)
OFF = No supervisory condition exists.
FLASHING = supervisory trouble detected on that zone.
TROUBLE
(yellow)
ON = Zone has a trouble condition which has been acknowledged
OFF = No zone trouble
FLASHING = Zone has a trouble condition
DOUBLE FLASHING = Zone was disabled
CLEAN ME FLASHING = Indicates that the smoke detector needs cleaning (LED is on long and
Off for a short time period)
NAC 1
and
NAC 2
ACTIVE (yellow) ON = NAC is active during an alarm
OFF = NAC is not active during alarm
TROUBLE
(yellow)
ON = NAC has a trouble condition and was acknowledged
OFF = No trouble condition
FLASHING = NAC is in trouble
DOUBLE FLASHING = Circuit was disabled
SYSTEM SILENCED
(yellow)
ON = System audio output has been silenced
OFF = Nothing silenced
FLASHING = Partially silenced
Operation Keystrokes
Disable notification appliance circuit.
To re-enable the circuit, press [NAC
DISABLE] again.
Press the appropriate [NAC DISABLE] key. The NAC circuit will be disabled and the corresponding
TROUBLE LED will Double Flash. This function is not available during an alarm condition.
Disable a zone
To re-enable the circuit, press [ZONE
DISABLE] again.
Press the appropriate [ZONE DISABLE] key. The zone will be disabled and the corresponding TROUBLE
LED will Double Flash. This function is not available during an alarm or supervisory condition.
Begin Walk Test Press [WALK TEST]. Walk Test LED turns on.
Note: Walk test will not activate if the control panel has a trouble, alarm, or supervisory condition.
End Walk Test Press [WALK TEST].
NOTE: The Walk Test feature is not operational during an alarm, supervisory or any system trouble
condition.The test ends automatically after 10 minutes of no system activity.
Acknowledge condition (alarm, supervisory,
trouble)
Press [ACK]. The corresponding LED will change from blinking to steady for the duration of the condition.
Silence Panel Press [SILENCE]. This will silence the on-board PZT and all active NAC circuits that have been configured as
"silenceable".
Perform system reset Press [RESET]. Resets alarms, supervisories, troubles and all LEDs.
For Service Contact:
Cut Along the Dotted Line
