Honeywell SK-FFT User manual

Model SK-FFT
Fire Fighter’s Telephone
Installation/Operation Manual
Document 54711 Rev: B2
12/18/2020 ECN: 2907

2Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Fire Alarm & Emergency Communication System Limitations
While a life safety system may lower insurance rates, it is not a substitute for life and property 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 (FACP) 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.
An emergency communication system—typically made up of an
automatic fire alarm system (as described above) and a life safety
communication system that may include an autonomous control unit
(ACU), local operating console (LOC), voice communication, and
other various interoperable communication methods—can broadcast
a mass notification message. Such a system, however, does not
assure protection against property damage or loss of life resulting
from a fire or life safety event.
The Manufacturer recommends that smoke and/or heat detectors be
located throughout a protected premises following the
recommendations of the current edition of the National Fire Protection
Association Standard 72 (NFPA 72), manufacturer's
recommendations, State and local codes, and the recommendations
contained in the Guide for Proper Use of System Smoke Detectors,
which is made available at no charge to all installing dealers. This
document can be found at http://www.systemsensor.com/appguides/.
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 first-floor 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, chimneys,
even wet or humid areas 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,
such as air conditioning vents.
• 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, compromising its ability to report a fire.
Audible warning devices such as bells, horns, strobes, speakers
and displays 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:
• An emergency communication system may take priority over a fire
alarm system in the event of a life safety emergency.
• Voice messaging systems must be designed to meet intelligibility
requirements as defined by NFPA, local codes, and Authorities
Having Jurisdiction (AHJ).
• Language and instructional requirements must be clearly dissemi-
nated on any local displays.
• Strobes can, under certain circumstances, cause seizures in peo-
ple with conditions such as epilepsy.
• Studies have shown that certain people, even when they hear a
fire alarm signal, do not respond to or comprehend the meaning of
the signal. Audible devices, such as horns and bells, can have dif-
ferent tonal patterns and frequencies. It is the property owner's
responsibility to conduct fire drills and other training exercises 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 life safety 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.
Alarm Signaling Communications:
•IP connections rely on available bandwidth, which could be lim-
ited if the network is shared by multiple users or if ISP policies
impose restrictions on the amount of data transmitted. Service
packages must be carefully chosen to ensure that alarm signals
will always have available bandwidth. Outages by the ISP for
maintenance and upgrades may also inhibit alarm signals. For
added protection, a backup cellular connection is recommended.
•Cellular connections rely on a strong signal. Signal strength can
be adversely affected by the network coverage of the cellular car-
rier, objects and structural barriers at the installation location. Uti-
lize a cellular carrier that has reliable network coverage where the
alarm system is installed. For added protection, utilize an external
antenna to boost the signal.
•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 alarm signaling connections are recommended.
The most common cause of life safety system malfunction is
inadequate maintenance. To keep the entire life safety 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 as required by National and/or
local fire codes and should be performed by authorized professional
life safety system installers only. Adequate written records of all
inspections should be kept.
Limit-F-2020

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 3
Installation Precautions
Adherence to the following will aid in problem-free installation with long-term reliability:
WARNING - Several different sources of power can be con-
nected 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 inter-
connecting cables while the unit is energized. Do not attempt to
install, service, or operate this unit until manuals are read and under-
stood.
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. Re-acceptance 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 (non-condensing) 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 susceptibil-
ity. 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, ream-
ing, 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. Over-tightening
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 sup-
pressive packaging to protect electronic assemblies removed from
the unit.
Units with a touchscreen display should be cleaned with a dry,
clean, lint free/microfiber cloth. If additional cleaning is required,
apply a small amount of Isopropyl alcohol to the cloth and wipe
clean. Do not use detergents, solvents, or water for cleaning. Do not
spray liquid directly onto the display.
Follow the instructions in the installation, operating, and program-
ming 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-D2-11-2017
FCC Warning
WARNING: This equipment generates, uses, and can radi-
ate radio frequency energy and if not installed and used in
accordance with the instruction manual may cause interfer-
ence to radio communications. It has been tested and found
to comply with the limits for Class A computing devices pur-
suant 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 Depart-
ment of Communications.
Le present appareil numerique n'emet pas de bruits radio-
electriques 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.
eVance®, Flexput®, Honeywell®, JumpStart®, Silent Knight®, and SWIFT® are registered trademarks of Honeywell International Inc. Microsoft® and Windows® are
registered trademarks of the Microsoft Corporation. Chrome™ and Google™ are trademarks of Google Inc. Firefox® is a registered trademark of The Mozilla Foundation.
©2021. All rights reserved. Unauthorized use of this document is strictly prohibited.

4Model SK-FFT Manual — P/N 54711:B2 12/18/2020
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
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Please include the following information:
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This symbol (shown left) on the product(s) and / or accompanying documents means that used electrical and electronic products should
not be mixed with general household waste. For proper treatment, recovery and recycling, contact your local authorities or dealer and
ask for the correct method of disposal.
Electrical and electronic equipment contains materials, parts and substances, which can be dangerous to the environment and harmful
to human health if the waste of electrical and electronic equipment (WEEE) is not disposed of correctly.

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 5
Table of Contents
Section 1: Overview .......................................................................................................................................................... 7
1.1: Features..............................................................................................................................................................................................................7
1.2: Optional Accessories .........................................................................................................................................................................................7
1.3: Agency Requirements ........................................................................................................................................................................................7
1.3.1: UL 864 9th and 10th Edition ..................................................................................................................................................................7
1.4: About This Manual ............................................................................................................................................................................................7
Section 2: Prerequisites for Installation.......................................................................................................................... 8
2.1: Environmental Specifications............................................................................................................................................................................8
2.2: Preventing Water Damage .................................................................................................................................................................................8
2.2.1: Removing the SK-FFT Assembly from the Housing .............................................................................................................................8
2.3: SK-FFT Board Layout .......................................................................................................................................................................................8
2.4: Electrical Specifications ..................................................................................................................................................................................10
2.4.1: Power Requirements.............................................................................................................................................................................10
2.4.2: Current Ratings.....................................................................................................................................................................................10
2.5: Wiring Specifications.......................................................................................................................................................................................10
2.6: Wire Routing....................................................................................................................................................................................................10
Section 3: Installation ..................................................................................................................................................... 12
3.1: Mounting the Cabinet ......................................................................................................................................................................................12
3.1.1: Surface Mounting .................................................................................................................................................................................12
3.1.2: Flush Mounting.....................................................................................................................................................................................12
3.2: Installing the Fire Fighter’s Hand Set..............................................................................................................................................................14
3.3: FFT-24 Installation ..........................................................................................................................................................................................15
3.4: Installing the SK-FFT ......................................................................................................................................................................................16
3.5: Operating Power ..............................................................................................................................................................................................16
3.6: DIP switch settings on SK-FFT .......................................................................................................................................................................16
3.6.1: DIP Switch ...........................................................................................................................................................................................16
3.7: SK-FFT Fire Fighter Telephone Module Connection......................................................................................................................................17
3.8: FFT-FPJ Installation ........................................................................................................................................................................................18
3.9: Installation of FFT-STS ...................................................................................................................................................................................18
3.9.1: Assembly of Units with Coiled Cord Handsets....................................................................................................................................18
Section 4: SLC Device Installation................................................................................................................................. 20
4.1: List of SLC Devices.........................................................................................................................................................................................20
4.2: Maximum Number of Devices ........................................................................................................................................................................20
4.3: Wiring Requirements for SLC Device.............................................................................................................................................................20
4.3.1: Wiring SLC in (Class B) Configuration ...............................................................................................................................................20
4.3.2: Wiring SLC Devices in (Class A) Configuration .................................................................................................................................21
4.4: Addressing SK-MINIMON SLC Devices .......................................................................................................................................................22
Section 5: Audio Phone Circuit Installation.................................................................................................................. 23
5.1: List of Devices .................................................................................................................................................................................................23
5.2: Maximum Number of Devices .......................................................................................................................................................................23
5.3: Wiring Requirements for the Audio Telephone Circuit ...................................................................................................................................23
5.3.1: Single Phone Jack Audio Circuit in Class B Configuration.................................................................................................................23
5.3.2: Single Phone Jack Audio Circuit Wired in Class A Configuration......................................................................................................24
5.3.3: Multi-Phone Jack Audio Circuit Wired in Class B Configuration .......................................................................................................25
5.3.4: Multi-Phone Jack Audio Circuit in Class A Configuration..................................................................................................................26
5.3.5: Telephone Jack Only Audio Circuit .....................................................................................................................................................26
Section 6: System Operation.......................................................................................................................................... 28
6.1: Key Switch Operations ....................................................................................................................................................................................28
6.1.1: JumpStart Key Switch (on inside of FFT Dead Front Panel)...............................................................................................................28
6.1.2: Accept Key Switch (on inside of FFT dead front panel)......................................................................................................................28
6.1.3: Answer Switch .....................................................................................................................................................................................28
6.1.4: Silence Switch ......................................................................................................................................................................................28
6.2: LED Operations ...............................................................................................................................................................................................28
6.2.1: Power Status LED.................................................................................................................................................................................28
6.2.2: Answer ..................................................................................................................................................................................................28
6.2.3: Power ....................................................................................................................................................................................................28
6.2.4: Local Handset Trouble .........................................................................................................................................................................28
6.2.5: Remote Handset Trouble .....................................................................................................................................................................28

6Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Table of Contents
6.2.6: General Trouble....................................................................................................................................................................................28
6.2.7: Status LEDs (on Inside of FFT dead front panel).................................................................................................................................28
6.2.8: Zone Active ..........................................................................................................................................................................................28
6.2.9: Zone Trouble ........................................................................................................................................................................................29
6.3: JumpStart® Operation .....................................................................................................................................................................................29
Appendix A: Compatible Powering Devices ................................................................................................................. 30
A.1: Compatible Power Devices.............................................................................................................................................................................30

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 7
Section 1: Overview
An SK-FFT Fire Fighter Telephone System provides supervision, annunciation, and control for local and remote telephone handsets. The
SK-FFT with keypad, provides indications of phone activation, and corresponding trouble conditions. Additionally, up to 48 telephone cir-
cuits can be annunciated at the SK-FFT by connecting the FFT-24 zone expander.
1.1 Features
• One Form-C Trouble Relay
• System Trouble Relay - TB6
• SK-FFT Fire Fighter Telephone module for control and annunciation of up to 48 remote telephone jacks
• A maximum of 10 Fire Fighter Remote Handsets (FFT-RHS) can be used at one time to communicate over the telephone circuit
connected to the SK-FFT
• Fire Fighter Phone Jack (FFT-FPJ) provides a plug-in location for the FFT-RHS
• Single Telephone Station (FFT-STS)
• Fire Fighter Handset Cabinet (FFT- HSC) is u s e d to store ten Fire Fighter Handsets (FFT-RHS)
• System Status LEDs
• Supports a single FFT-24 zone expander
1.2 Optional Accessories
This manual also contains information on how to install the following compatible accessories with the FFT series equipment:
1.3 Agency Requirements
The SK-FFT has the same requirements as the main control panel. These requirements are listed in the Honeywell Silent Knight Series
Addressable FACP Installation Manuals. The FACP Installation Manuals can be found on the web site at www.silentknight.com.
1.3.1 UL 864 9th and 10th Edition
• Per the UL Continuing Certification Program, UL 864 9th edition fire alarm control equipment will retain certification
after the roll-out of UL 10th edition (12/2/2018).
Installations of UL 864 10th Edition certified equipment are permitted to use UL864 9th Edition certified equipment when
approved by the local Authority Having Jurisdiction (AHJ).
1.4 About This Manual
This manual is intended to be a complete reference for all installation and operations tasks for the SK-FFT. Honeywell Farenhyt series Instal-
lation Manuals can be found on our web site at www.silentknight.com.
Please let us know if the manual does not meet your needs in any way. We value your feedback!
Model Number Description
FFT-24 24 Zone Expander
FFT-FPJ Remote Phone Jack
FFT-RHS Fire Fighters Remote Hand Set
FFT-HSC Fire Fighters Handset Cabinet
FFT-STSR Single Telephone Station Recessed
FFT-STSS Single Telephone Station Surface Mount
FFT-BGK Break Glass Kit for FFT-STS
SK-MINIMON Addressable Mini-Monitor Module
SK-ISO SLC Line Isolation Module
Table 1.1 Optional Accessories

8Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Section 2: Prerequisites for Installation
This section of the manual is intended to help you plan your tasks to complete the installation. Please read this section thor-
oughly, especially if you are installing a SK-FFT for the first time.
2.1 Environmental Specifications
It is important to protect the SK-FFT control panel from water. To prevent water damage, the following conditions should be
AVOIDED when installing 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)
When selecting a location to mount the SK-FFT, the unit should be mounted where it will NOT be exposed to temperatures
outside the range of 0°C- 49°C (32°F-120°F) or humidity outside the range of 10% - 93% at 30°C (86°F) non-condensing.
2.2 Preventing Water Damage
Water damage to the fire fighters phone system can be caused by moisture entering the cabinet through the conduits. Conduits
that are installed to enter the top of the cabinet are most likely to cause water problems. Installers should take reasonable pre-
cautions to prevent water from entering the cabinet. Water damage is not covered under warranty.
2.2.1 Removing the SK-FFT Assembly from the Housing
If it should ever be necessary to remove the control panel assembly from the cabinet for repair, do so by removing the screws
that hold the control panel in to the cabinet. Do not attempt to disassemble the circuit boards.
2.3 SK-FFT Board Layout
Figure 2.1 illustrates the SK-FFT board layout and terminal information.
Figure 2.1 SK-FFT Back View
JumpStart Accept
Connector for FFT-24
Status LED’s
Local
Handset
PZT
Phone In
Phone Out
SLC IN
SLC Out
mounting stud
Mounting stud
Supervised
Power Limited
All circuits inherently power limited except
the trouble relay
DIP Switch
Not used
DC
Power
Non Power
Limited
mounting stud
mounting stud
Mounting stud
mounting stud
Power Status LED
Trouble
Relay

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 9
SK-FFT Board Layout Prerequisites for Installation
Figure 2.3 shows the circuit board that attaches to the cabinet. If you need to remove the board assembly for repair, remove the
seven mounting nuts which hold the assembly in the cabinet. Then, lift the control board out of the cabinet.
Figure 2.2 SK-FFT Front View
Figure 2.3 FFT-24 Expander Front View for Zone 25 - 48
Active
(green)
Trouble
(amber)
Zone 1-
Zone 8
Zone 9 -
Zone 16
Answer LED General Trouble LED
Zone 17 -
Zone 24
Zone 25 -
Zone 32
Zone 33 -
Zone 40 Zone 41-
Zone 48
Active
(green)
Trouble
(amber)

10 Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Prerequisites for Installation Electrical Specifications
2.4 Electrical Specifications
2.4.1 Power Requirements
Voltage for the SK-FFT must be a power-limited, filtered, non resettable nominal 24 VDC source. The voltage source must be
within the range of 17-29 VDC.
2.4.2 Current Ratings
Maximum current ratings for determining backup battery requirements for alarm (active) and standby conditions over the
input voltage range of 17-29 VDC are shown in Table 2.2.
2.5 Wiring Specifications
Induced noise (transfer of electrical energy from one wire to another) can interfere with telephone communication or cause
false alarms. To avoid induced noise, follow these guidelines:
• Isolate input wiring from high current output and power wiring. Do not pull one multi-conductor cable for the entire
panel. Instead, separate the wiring as follows:
• 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. Twisted, shielded wire on the Audio Circuits is recommended for maximum
protection against EMI and AFI emissions and susceptibility. Connect the shield to earth ground at the panel. You must
route high and low voltages separately.
• Route the wiring around the inside perimeter of the cabinet. It should not cross the circuit board where it could induce
noise into the sensitive microelectronics or pick up unwanted RF noise from the high speed circuits. See Figure 2.4 on
page 11 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.
2.6 Wire Routing
You must follow power-limited wiring techniques, which include maintaining one-quarter inch spacing between power-limited
and non-power limited circuits and separating high and low voltage circuits
Circuits Voltage Current
SLC Circuits 17 MV 150 mA
Audio Circuits 18 V 53 mA
Table 2.1 Electrical Ratings
Active Standby
SK-FFT 230 mA 120 mA
FFT-24 25 mA 10 mA
Table 2.2 SK-FFT Current Draw
SLC loops Audio circuits
Relay circuit
Table 2.3 Wiring Specifications

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 11
Wire Routing Prerequisites for Installation
.
Figure 2.4 Wire Routing Example
Non-Power-limited Relay Circuit
Power-Limited
Non power-limited wiring must
be run separately from power-
limited wiring.

12 Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Section 3: Installation
3.1 Mounting the Cabinet
Read the environmental specifications in Section 2.1 before mounting the SK-FFT cabinet. This will ensure that you select a
suitable location.
The cabinet can be surface or flush mounted. Do NOT flush-mount in a wall designed as a fire break.
3.1.1 Surface Mounting
The Cabinet can be mounted on the wall surface by using the mounting holes in the back of the cabinet (see Figure 3.1 on
page 12).
1. Insert two screws level with each other, 14" apart for the top cabinet key shaped holes. See Figure 3.1 on page 12.
2. Hang the cabinet onto the two screws. Tighten the screws down.
3. Insert two screws into the two bottom mounting holes and tighten them snug to the cabinet.
Figure 3.1 Cabinet Mounting Holes
3.1.2 Flush Mounting
This section describes how to flush mount the cabinet into a wall. To recess mount the cabinet you will need to have the
optional trim ring P/N VIP-TR (ordered separately).
Follow these steps to recess mount the cabinet:
1. Remove the cabinet door and the dead front panel.
2. Cut a recess hole 20-1/4” W x 26-3/4” H (51.44 cm W x 67.95 cm H). There should be 1.5" to 1.75" of cabinet extruding
from the wall, this should be measured from either the top edge or bottom edge to the exterior side of the sheet rock. (See
Figure 3.2.)
NOTE: Do not insert the cabinet deeper than recommend above. If the cabinet is mounted to deep you will not be able to re-attach the door
assembly.
3. Mount the cabinet to wall studs by inserting a screw through the cabinets side mounting holes into the wall stud.
Bottom Mounting Holes
20"
26-½”
Key Shaped Holes

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 13
Mounting the Cabinet Installation
Figure 3.2 Detail of Flush Mounting with Trim Ring
4. Place the trim ring around the cabinet. See Figure 3.3.
.
Figure 3.3 Trim Ring Around cabinet
5. Secure the trim ring to the cabinet using the self-tapping sheet metal screws from the inside of the cabinet into the trim
ring.
6. Re-attach the cabinet door assembly.
Side View of Cabinet
Sheet Rock
Sheet Rock
Mounting
Studs
Cabinet
Mounting Hole
Trim Ring
Mounting
Hole
Cabinet
Mounting Hole
and Trim Ring
Trim Ring
1.5 to 1.75"
Trim Ring
Mounting
Hole
Trim Ring
Cabinet

14 Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Installation Installing the Fire Fighter’s Hand Set
Cabinet Door and Dead Front Removal
While installing the cabinet it may be necessary to remove the cabinet door and the dead front panel. This section provides
instructions on how to remove the door and dead front panel.
1. Using a Phillips head screw driver, remove the six screws that hold the dead front panel in place. See Figure 3.4.
.
Figure 3.4 Cabinet Door and Dead Front Panel Removal
2. Using a 1/4” Hex drive, remove the six Hex nuts that hold the cabinet door in place. See Figure 3.4.
Re-Attaching the Cabinet Door
To re-attach the cabinet door reverse the procedure in section .
3.2 Installing the Fire Fighter’s Hand Set
FFT Local Handset installation involves the following steps:
1. Insert phone cord through hole of dead front panel. See Figure3.5.
Figure 3.5 Handset Cord Inserted Through Dead Front Panel Hole
Cabinet Door
Dead
Front Panel
Dead Front
Panel Screws
Cabinet Door
Hex Nuts

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 15
FFT-24 Installation Installation
2. Attach strain relief clip to the phone cord. The strain relief clip should have about 2 ¾” of phone cord though it. See
Figure 3.6.
Figure 3.6 Installing Strain Relief Clip
3. Push the strain into the hole in the dead front panel.
3.3 FFT-24 Installation
The FFT-24 expander board lets you add additional zones to the -FFT.
To install the FFT-24:
1. Open Cabinet door and dead front panel.
2. Remove power. See Appendix A: for compatible powering devices.
3. Remove blank plate and discard.
4. Mount the FFT-24 on the six mounting studs located on the inside of the dead front panel and secure using the nuts
removed from the blank plate. See Figure 3.7.
Figure 3.7 Mounting Locations for the FFT-24
mounting studs
mounting studs

16 Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Installation Installing the SK-FFT
5. Connect one end of the wiring harness (P/N 130398 supplied) to the SK-FFT and the other end to the FFT-24 as shown in
Figure 3.8.
Figure 3.8 Wire Harness Connection from SK-FFT to FFT-24 Zones 25- 48
6. Restore power. See Section 3.5.
3.4 Installing the SK-FFT
SK-FFT installation involves the following steps:
• Make physical connection to any outputs that will power* the SK-FFT. (See Section 3.5).
• Set the DIP switch ID for the SK-FFT (See Section 3.6.1).
*See Appendix A: in the back of this manual for compatible powering devices. Manuals can also be found on the website
www.silentknight.com.
3.5 Operating Power
This section provides instructions to install the appropriate DC power source.
1. Connect the SK-FFT to the appropriate DC power source. See Section 2.4.1 for power requirements. For compatible
product see Appendix A.
2. Use the on-board DIP switch to assign the configuration setting to the SK-FFT. (See Section 3.6.1).
3.6 DIP switch settings on SK-FFT
This section describes how to configure the DIP switch setting on the SK-FFT.
1. Refer to Section 2.3 for location of the DIP switches on the SK-FFT board.
2. Configure the SK-FFT module by adding it to the system through JumpStart feature. See Section 6.3 for JumpStart
Operation. Table 3.1 list possible DIP switch configurations.
3.6.1 DIP Switch
Figure 3.9 DIP Switch
SK-FFT
DIP Switch ON OFF
1 SLC Devices Installed SLC Devices not Installed
2 Trouble PZT Enabled Trouble PZT Disabled
3 SLC Class A Supervision SLC Class B Supervision
4 Phone Circuit Class A Supervision Phone Circuit Class B Supervision
5 First FFT-24 Expander Installed First FFT-24 Expander not Installed
Table 3.1 SK-FFT DIP Switch Configurations

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 17
SK-FFT Fire Fighter Telephone Module Connection Installation
3.7 SK-FFT Fire Fighter Telephone Module Connection
The SK-FFT provides connection for a single Class B or Class A telephone audio circuit. See Section 4 and Section 5 for
examples of audio zone configurations. A monitor module can be used to monitor the connection of the Fire Fighter Telephone
remote handset (FFT-RHS) into the FFT-FPJ, which is then displayed on the SK-FFT active zone LED during the JumpStart
feature.
Figure 3.10 SK-FFT Connections
To FFT - SLC
Terminal TB4
Connectors or
The wiring between the monitor module
and FFT-FPJ is supervised by the monitor
module. A 47K Ω End-of-Line resistor is
built into the FFT-FPJ.
To FFT-Phone TB4
phone In/Out + –
connections or other
FFT-FPJ’s or FFT-
STS’s
To FFT - SLC Terminal TB4
Connectors or other -MM

18 Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Installation FFT-FPJ Installation
3.8 FFT-FPJ Installation
The FFT-FPJ Firefighter Phone Jack mounts to a single-gang electrical box (4" x 2-1/8" x 2-½") or, when the addressable mini-
monitor module is installed with it, a deep single-gang electrical box (4" x 2-1/8” x 3-¾”).
Connect the telephone audio loop between the FFT-FPJ and FFT as detailed in Figure 3.12.
All circuits are power-limited and supervised.
Figure 3.11 FFT-FPJ (Phone Jack) and FFT-RHS (Handset)
Figure 3.12 FFT to FFT-FPJ Connection
3.9 Installation of FFT-STS
The Single Telephone Station comes in a series of parts. The telephone chassis, backbox, break glass kit and door with key
lock are all ordered separately. Up to ten remote handsets may be operated simultaneously.
3.9.1 Assembly of Units with Coiled Cord Handsets
The following assembly steps are for telephones with coiled cord handsets. These steps must be accomplished once the enclo-
sure has been mounted and the system wiring is in place
1. Attach system wiring to the terminal strip on the telephone chassis assembly
2. Install 6-32 nut in backbox. Do not tighten.
3. Install telephone chassis assembly in backbox.
4. Install trim ring on backbox with 6-32 wing nuts. Do not tighten.
To FFT-SLC Terminal TB4 Connectors or
other IDP-MM or SK-MM.
4.7KW, 1/2 wat ELR
(Install on the last device for
Class B telephone circuit only).

Model SK-FFT Manual — P/N 54711:B2 12/18/2020 19
Installation of FFT-STS Installation
5. Install door assembly. Tighten wing nuts.
.
Figure 3.13 FFT-STS Telephone Connection
Figure 3.14 EOL Example
Contact
EOL set to
Connected
*See
Figure 3.14
for EOL

20 Model SK-FFT Manual — P/N 54711:B2 12/18/2020
Section 4: SLC Device Installation
4.1 List of SLC Devices
The following SLC device can be used with the Fire Fighters Phone. See the device installation instructions for more information (packaged
with the device).
4.2 Maximum Number of Devices
The SK-FFT supports up to 48 SK-MINIMON devices on one FFT system.
4.3 Wiring Requirements for SLC Device
The following information applies to the SK-MINIMON - Mini Monitor module.
4.3.1 Wiring SLC in (Class B) Configuration
No special wire is required for addressable loops. The wire can be untwisted, unshielded, solid or stranded as long as it meets the National
Electric Code 760-51 requirements for power limited fire protective signaling cables. Wire distances are computed using copper wire.
Maximum wiring resistance is 40 ohms to the farthest SLC device.
Maximum loop length depends on the wire gauge.
Figure 4.1 and Figure 4.2 show how length is determined for out and back tap T-Tap style wiring.
.
Figure 4.1 Calculating the Wire Run Length for a Simple Out and Back
!
CAUTION: TO PREVENT THE RISK OF ELECTRICAL SHOCK AND DAMAGE TO THE UNIT, SHUT OFF THE POWER AT
THE CONTROL PANEL WHEN YOU INSTALL OR SERVICE THE CONTROL PANEL.T
Device Part Number Model Name/Description Install Sheet PN
SK-MINIMON Mini Monitor Module I56-3444-000
SK-ISO Fault Isolator Module I56-3445-000
Table 4.1
Wire Gauge Max. Distance
22 AWG 1200 feet
18 AWG 3100 feet
16 AWG 4900 feet
14 AWG 7900 feet
12 AWG 10,000 feet