Fire Alarm Boxes
and Transmitters
Three-Fold Fire Alarm Boxes
and Transmitters
Gamewell-FCI coded fire alarm boxes and industrial transmitters provide large industries, institutions and communities with the surest and safest means of prompt, effective
fire alarm reporting. They are positive and bring help
directly to the exact location from which the alarm was
sent. They minimize human error in fire reporting. There is
no confusion on the part of either sender or receiver; no
hazardous, time-consuming confusion between streets,
roads and avenues with the same or similar names.
The three-fold fire alarm boxes and transmitters are
designed for coded alarm reporting into a normally closed
series metallic signaling circuit having a normal DC flow of
0.100 amp. They transmit signals over this circuit in accordance with their respective code numbers.
These three-fold assemblies are available in numerous
variations which can be classified into three major categories as follows:
Three-Fold Fire Alarm Box
Three-Fold Manual Fire Alarm Box
Strictly manually operated by moving the pull guard forward
which exposes the operating lever. Downward pressure on
this lever actuates the code signal mechanism.
Three-Fold Master Fire Alarm Box
Master fire alarm boxes have provisions for electrical actuation in addition to the manual operation. They are
designed to provide the connecting link between a principal
municipal or industrial fire alarm system and auxiliary type
fire alarm systems installed for protection of public buildings, schools, industrial plants etc. With such provisions,
any alarm originating from heat detectors, smoke detectors, sprinkler heads, etc. are automatically transmitted
through the Three-Fold Master Fire Alarm Box to the central headquarters.
Manual activation.
Remote electrical activation.
Manual or remote activation.
Positive non-interfering movement.
Automatic grounding.
Red or blue.
Local energy transmission.
Surface or semi-flush mount.
An ISO 9000-2000 Company
12 Clintonville Road, Northford, CT 06472-1610 USA • Tel: (203) 484-7161 • Fax: (203) 484-7118
Specifications are for information only, are not intended for installation purposes, and are subject to change without notice. No responsibility is assumed by Gamewell-FCI for their use.
©2007 Honeywell International Inc. All rights reserved.
CS-2261 Rev. A1 page 1 of 4
Industrial Three-Fold Master Transmitter
Master transmitters have provisions for electrical actuation
but do not have any means for manual operation. They
would be used when manual operation is not required such
as an un-manned warehouse.
sion of a fragment of a signal or stopping of the mechanism
in a position which might hold the circuit open.
If the main spring is run-down, the circuit will be grounded.
Thus, by the testing means provided at headquarters, the
location of the faulty box may be determined.
Manual Pull
Three-Fold Features
All fire alarm boxes and transmitters incorporate the
unequaled Gamewell-FCI Three-Fold spring-driven movement. This movement operates on positive non-interfering,
quick succession and also features the unique three-fold
automatic grounding capability.
The movement is designed so that should two (2) boxes on
a normal line be operated simultaneously, one will be automatically selected to transmit a correct signal for four complete rounds. If a box is operated while another box is in
operation, it will not interfere in any way with the transmission of the signal of the first box. The second box will take
control of the circuit and transmit its complete four (4)
rounds of signal upon the beginning of its next round following the completion of the signal of the first box. This
operation, without loss of alarm or interference between
simultaneously actuated movements, is possible because
of the positive non-interference and quick succession features.
The manual Three-Fold Boxes and Three-Fold Master
Boxes are provided with means for manual actuation.
These boxes are of the quick action type and require only
the opening of the quick action pull down guard and the
depressing of the lever to trip the mechanism. Once
tripped, no further manipulation of the lever has any effect
on the mechanism. When the box is operated in a normal
metallic circuit, four (4) rounds of the box number will be
transmitted to headquarters. If another box has control of
the line, the box operated will wait until the line is clear and
then transmit its signal to headquarters.
Test Features
In addition to transmitting emergency signals for fire alarm
purposes, the fire box is equipped with a telegraph key so
that authorized persons may transmit manually formulated
code signals and receive audible indication, via tap bell, of
the transmission of all code signals on the circuit.
The self-grounding mode of operation is accomplished
automatically whenever a three-fold movement is actuated
on a circuit which has developed an open. In this mode of
operation, signals may be received from transmitters and
boxes by properly conditioned receiving circuits at headquarters.
The test block is provided so that all functions of the box
can be tested without the transmission of any signal over
the circuit and without impairing the transmission over the
circuit of signals from other sources. Means for cutting the
box out of service or grounding either side of the circuit as
required are also provided.
The Gamewell-FCI Three-Fold Boxes and Transmitters are
capable of making approximately 26 attempts to command
a circuit. If, at the end of that time an actuated unit is still
unable to get a clear line, it will automatically “take over”
(bulldog) the circuit to transmit four (4) rounds of its signal
before it is wound down. The mechanism is capable of
transmitting signals at varying rates of speed ranging from
electrical impulses at 3.25 second intervals to .25 second
intervals and has provisions for adjusting speeds within this
Frequently, the many advantages of the Three-Fold operation are desired without all of the other features of a standard Gamewell-FCI Fire Alarm Box. Accordingly, we offer
the MODIFIED version of the standard units. It is basically
the same as the popular Three-Fold Box which has had an
excellent service record for decades. The difference is that
the MODIFIED Three-Fold Boxes do not have the inner
case, tap bell, telegraph key and test block.
When the main spring is run-down so there is insufficient
capacity left for transmission of four (4) complete rounds of
the signal, the mechanism is locked to prevent further
operation until the spring is rewound, to prevent transmis-
Signaling Mechanism
The signaling mechanism is carefully assembled with all
parts precision-manufactured. All parts are plated or
treated to resist rust and corrosion, and the mechanism is
completely enclosed in a dust tight transparent plastic
12 Clintonville Road, Northford, CT 06472-1610 USA • Tel: (203) 484-7161 • Fax: (203) 484-7118
CS-2261 Rev. A1 page 2 of 4
cover, fastened to the mechanism mounting panel of heavy
duty molded plastic.
arranged to perform this function if specifically designed to
operate the local energy type Master Box.
1. All wires shall be installed in accordance with the National Electrical Code.
2. Auxiliary circuit wires must be installed in rigid conduit.
Three-Fold Fire Alarm Boxes
All of the working parts are mounted in an *inner case
which is installed in the familiar “Signal Red” weatherproof
cottage shell. Both the inner and outer cases are constructed of aluminum, suitably treated and finished, the
outer case is painted red and the inner case is white. A
white guard panel is installed on the outer door to protect
and highlight the starting lever. Both narrow sides of the
box have a Scotchlite™ reflective “FIRE” sign that appears
in red letters with a white background. The outer case is
provided with a threaded 1/2”, (typical 2 places) conduit
connection at the top and a clearance hole for 1/2”, (typical
2 places) conduit at the bottom.
*The inner case is not included with Modified Boxes.
Scotchlite™ is a trademark of 3M™.
Industrial Master Transmitter
This transmitter utilizes the standard Three-Fold Mechanism and auxiliary tripping attachment mounted in a sheet
metal enclosure with a locked, hinged door. The box code
number plate is mounted on the outside of the door. The
transmitter dimensions are: 12” high x 12” wide x 6” deep
(30.48 H x 30.48 W x 15.2 D cm). This unit is designed for surface mounting.
Installation Information
Although the Gamewell-FCI Master Fire Alarm Box is
designed for connection to auxiliary systems inside the
buildings, the National Fire Protection Association recommends that the Master Box be placed outside of, but convenient to, the building protected. Installation on a pole or
wall nearby, preferable using a mounting bracket, reduces
the fire hazard to the circuit wires of the main fire alarm
system. It is recommended that the lead-in wires from the
main circuit to the Master Box be placed underground, but
if aerial wire construction is used, adequate lightning protection should be provided at the Master Box. A GamewellFCI, GW 44551-01 lightning arrester is suitable for this purpose. Three (3) conductors, of #14 or #16 AWG wire, are
recommended for connection between the Master Box and
the Reset Supervisory Panel. This panel may be installed
inside the building, preferably in some location where it will
be visible a major portion of the time to certain of the building personnel. This applies to the shunt trip type Master
Box. Where the local energy type is used, requiring local
power source for auxiliary operation, the supervisory panel
may not be necessary as interior system control panels are
1 2 3 4 5 6 7 8 9 10
Figure 1 Typical Wiring Connections - Gamewell-FCI Master Fire Alarm Box
For Shunt Type Master Box
1. Connect initiating devices in series with auxiliary circuit.
Devices must be normally closed and must open on
2. Auxiliary circuit loop resistance must not exceed
30 ohms.
3. Supply voltage of the circuit in which the Master Box
is connected should not be less than 30 volts.
For Local Energy Type Master Box
1. Auxiliary circuit normal operating (alarm) current should
be.250 amperes DC or .380 ampere 60 Hz AC.
2. Auxiliary circuit supervisory current should be not more
than .050 ampere DC or .070 ampere 60 Hz AC.
3. Nominal volts across coil = 3.65 VDC or 50 VAC 60 Hz.
Use series resistor for higher voltages.
4. Maximum safe current in trip coil 125% of nominal
values given.
5. Coil, wiring, and terminals insulated for 125 VAC
(1250 VAC breakdown test).
Figure 2 Dimension Data for Master Boxes
12 Clintonville Road, Northford, CT 06472-1610 USA • Tel: (203) 484-7161 • Fax: (203) 484-7118
CS-2261 Rev. A1 page 3 of 4
Ordering Information
Ordering Information (Continued)
Three-Fold Manual Boxes
(For interior or exterior use)
Part Number
Surface mounting, cottage shell
Master Box - Shunt Type
Shunt Trip, surface mounting, cottage shell
Same as M34-53 with plain door painted
Shunt Trip, sheet metal housing, plain door
(less test block, tap key and bell)
Local Energy Type
Local Energy Trip, surface mount,
cottage shell
Same as M34-56 with plain door
painted blue
Same as M34-56 with plain door
painted red
Local energy trip, flush mounting,
gasket cast frame for interior or exterior
Same as M34-92 with plain door
painted blue
Same as M34-92 with plain door
painted red
Local Energy Trip, surface mount cottage
shell (less inner case test block, tap key
and bell)
Local Energy Trip Transmitter, sheet metal
housing (less test block, tap key & bell)
plain door.
Part Number Description
Indicating light, plain red globe for pedestal
mounting, 120 VAC. Order 40067 1/2"
nipple separately.
1/2" nipple for use with 47375G Light
Plain red globe, pole or wall mounting,
120 VAC
EZYMOUNT cross brackets
EZYMOUNT loose parts
EZYMOUNT side brackets (2 required)
Flexmount horizontal bracket
Flexmount loose parts
Flexmount vertical bracket
12 Clintonville Road, Northford, CT 06472-1610 USA • Tel: (203) 484-7161 • Fax: (203) 484-7118
CS-2261 Rev. A1 page 4 of 4