Visonic MCT-425, MCT-425C Installation Instructions Manual
D-301296 1
MCT-425, MCT-425C
Supervised Wireless PowerCode Smoke Detector
Installation Instructions
1. DESCRIPTION AND APPLICATIONS
The MCT-425 and MCT-425C are smoke-automatic fire detectors
with integral audible signal for open area protection, designed to
sense smoke (not gas, heat or flame) and fitted with a PowerCode
type UHF transmitter. MCT-425C is for CANADA only.
The smoke detector provides early warning of developing fire by
sounding an alarm with its built-in alarm horn, and by transmitting a
coded alarm signal to a PowerCode receiver or to a compatible
wireless alarm control panel. For UL approved installation use only
PowerMax+ control panel.
It must be borne in mind, though that effective prewarning of fire
accidents is only possible if the detector is located, installed and
maintained as described here.
YELLOW
LED
TEST BUTTON
&
RED LED
Figure 1. General View
2. SPECIFICATIONS
SMOKE DETECTOR
Alarm Sound Level: 85 dB at 3 m (10 feet)
TRANSMITTER AND CODING
Operating Frequency (MHz): 315, 433.92, 868.95, 869.2625 or
other frequency according to local requirements.
Transmitter's ID Code: 24-bit digital word, over 16 million
combinations, pulse width modulation.
Overall Message Length: 36 bits
Supervision: Automatic signaling at 60-minute intervals (315
MHz version), 15-minute interval (433.92, 868.95, 869.2625 MHz
versions) or according to the local standards.
Tamper Alerts: Tamper event (removal of the unit from its bracket)
is reported once. Tamper restore is reported when the tamper
switch is restored.
Transmission Indicator: Yellow LED lights upon transmission
(visible only when Switch SW-1 is ON).
ALARM REPORT:
Every 20 sec. for the first 3 minutes.
Every 3 min. for the next 27 minutes.
Alarm stops reporting after 30 min., or if the detector goes into
"alarm restore".
ELECTRICAL DATA
Power Source: 9 Volt alkaline or lithium.
Operation Voltage: From 7.2 V to 9 V.
Current Drain: 28 µA standby, 20 mA in operation
Smoke Density:
Europe: 0.15 – 0.2 dB/m
USA & CANADA: 0.61%/ft to 1.27%/ft
Cover Range: 50 cubic meters (1765.5 cubic ft.)
Battery Life Expectancy:
Alkaline: at least 1 year (for typical use) for battery types
Eveready (Energizer) #E522, Duracell #MN1604, GP GP1604AU
Lithium: at least 1 year (for typical use) for battery type
Ultralife # U9VL-V.
Battery Supervision: Automatic transmission of battery status
data as part of any transmitted message.
Audible and Visual Low Battery Warning: Built-in horn beeps
every 30 seconds simultaneously with red LED flashing (for up to
30 days when the battery voltage drops).
Audible and Visual Degraded Chamber Sensitivity Warning:
Built-in horn beeps every 30 seconds in the middle of red LED
flashing intervals – indicate that the sensor should be cleaned.
Clean Warning Transmission: A clean (maintenance) signal is
transmitted when the detector's chamber sensitivity becomes
degraded.
Note: This transmission applies to the PowerMax+ control panel only
PHYSICAL DATA
Operating Temperature: 0°C to 50°C (32°F to 122°F).
Relative Humidity: 10% to 85%
Dimensions: 130 mm (5.12") x 75 mm (2.95")
Weight (including battery): 272 g (9.6 oz)
Compliance with Standard:
MCT-425 Europe: (868.95, 433.92 and 869.2625 MHz):
CE/RTTE - EN 30220, EN 301489, EN 50130-4. (UK) BS
5446, EN54-7, EN 14604, UK (868.95 MHz).
MCT-425 USA (315MHz): (FCC) CFR47 Part 15, UL 268
MCT-425C CANADA: (IC) RSS210, (ULC) CAN/ULC-S529-02
3. INSTALLATION
3.1 Disassembly
Separate the unit from its mounting bracket as shown in Figure 2.
BRACKET DETECTOR
1
Hold the
bracket with
one hand
2
Rotate the
detector as
shown and
pull it from
the bracket
Figure 2. Separating the Detector from Its Bracket
3.2 Setting the Function Switch
The MCT-425 and MCT-425C have a 4-position DIP switch
function selector (see Figure 3). The switch levers are numbered 1
to 4, and each switch allows you to select one of two options.
Set the function switches as desired. The ON position is indicated
on the switch body.
Table 1. Function switch settings
SW. Marking Pos. Selected Option Default
SW-1
LED ON
OFF
Yellow LED will light upon transmission
Yellow LED is disabled
ON
SW-2
RST ON
OFF
“Restore” events reported
“Restore” events not reported
ON
SW-3
ON
OFF
Do not use!
Do not use!
OFF
SW-4
ON
OFF
Do not use!
Do not use!
OFF
2 D-301296
3.3 Definitions of LED Light and Buzzer
The red and yellow LED light and buzzer turn on and/or off to
indicate the following conditions:
A. When the red LED blink once every 30 seconds, this means
power on, i.e., the detector is energized.
B. When the red LED flashes and the buzzer beeps intermittently,
this means alarm for potential smoke hazard.
C. When the red LED flashes together with buzzer beeps every 30
seconds, this means battery power is low.
D. When the buzzer sounds every 30 seconds, in the middle of red
LED flashing interval, it indicates degraded chamber sensitivity
(the smoke detector must be cleaned).
E. The yellow LED turns on each time an RF signal is transmitted
to the control panel.
3.4 Battery Connection and Initial Test
Attention: The detector battery cover is fitted with a red button that
prevents the detector from locking onto bracket if there is no battery
inside.
The smoke detector is supplied with a 9V battery seated within its
holder but insulated from the battery terminals.
Battery cover
Function selector
Open battery cover and
connect the battery to its
terminals (without
insulator). Verify proper
polarity. Verify proper
polarity.
Tamp er s wit ch
actuator
Tab (1 of 4)
Red button
Figure 3. Smoke Detector Rear Side
Note: When the battery first makes contact, the alarm horn may
sound for one second. This indicates that the battery is
connected properly.
Close the cover, then press the test button (see fig. 1) for about 5
seconds until the horn sounds two sequences of a loud 3-beep
alarm. This means that the smoke detection section is
working properly.
3.5 Resetting the Transmitter Module
and Enrolling its PowerCode ID
A rear tamper protection switch is mounted under the PC board.
The tamper switch actuator, extending through a hole in the base
(see Figure 3), is pressed against the bracket when the unit is
attached to the bracket.
Removal of the unit from the bracket will cause the switch contacts
to open, creating a tamper event, which will be reported by the
transmitter to the control panel.
Refer to the control panel’s installation instructions and follow the
procedure given there for enrolling transmitter IDs in the control
panel's memory.
When required to initiate a transmission for enrollment, press the
smoke detector’s test button (see fig. 1) until the built-in horn
sounds, or press the tamper switch.
Note: It is much easier to carry out this operation while holding
the MCT-425 / MCT-425C in your hand, close to the control
panel.
3.6 Mounting
Note: In Canada, detectors are to be installed in accordance with
the Standard for Installations of Fire Alarm Systems CAN/ULCS524-01, in accordance with the Canadian Electrical Code, Part I
and in a manner acceptable to the local authority having
jurisdiction.
1
Mark and drill 2 holes in
the mounting surface.
Fasten the bracket to the
mounting surface with 2 screws.
2
Align detector’s tabs (see fig. 3)
with the bracket slots and rotate
the detector as shown. Pull the
detector outward to verify that it
is securely attached.
BRACKET DETECTOR
slot
slot
Figure 4. Mounting
Notes
1. A battery must be inserted into the detector before the
detector can be mounted onto the bracket.
2. Unauthorized removal of the unit from the bracket will initiate
a tamper alert!
3.7 Test
Press the test button (see fig. 1) until the built-in horn sounds.
Verify that the transmitted signal has been received at the control
panel, and that the control panel responds accordingly by
activating the fire alarm siren or any other warning device.
4. SMOKE DETECTOR INSTALLATION OVERVIEW
4.1 Where to Install Smoke Detectors
Smoke detectors should be installed in accordance with the
NFPA Standard 72 (National Fire Protection Association,
Batterymarch Park, Quincy, MA 02169). For complete coverage
in residential units, smoke detectors should be installed in all
rooms, halls, storage areas, basements and attics in each family
living unit. Minimum coverage is one detector on each floor and
one in each sleeping area. For maximum protection, a smoke
detector should be located outside primary sleeping areas or on
each level of your home. Here are a few useful tips for you:
• Install a smoke detector in the hallway outside every separate
bedroom area, as in Figure 5. Two detectors are required in
homes with two bedroom areas, as in Figure 6.
• Install a smoke detector on every floor of a multi-floor home or
apartment, as shown in Figure 7.
• Install a minimum of two detectors in any household.
• Install a smoke detector inside every bedroom.
• Install smoke detectors at both ends of a bedroom hallway if
the hallway is more than 12 meters (40 feet) long.
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