Visonic SMD-426 Installation Instructions Manual

SMD-426, SMD-427
Supervised Wireless PowerG Smoke / Heat and
Smoke Detector

1. INTRODUCTION

SMD-426 (smoke detector) and SMD-427 (heat and smoke detector)
are automatic fire detectors with integral audible signal for open area
protection, designed to sense heat or smoke (not flame) and fitted
with a PowerG type transceiver.
SMD-426 / SMD-427 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 PowerG receiver or to a compatible wireless
alarm control panel.
SMD-427 will activate a fire alarm upon either smoke or heat
(temperature rate-of-rise) condition. With two fire sensors (heat and
smoke), the SMD-427 detector may shorten the time to fire alarm
activation.
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.
In alarm condition, the buzzer sound can be stopped for 12 minutes by
pressing the TEST/MUTE switch. It will not restore the alarm condition,
but will temporarily silence the buzzer while you correct the condition.
After 12 minutes, the detector restarts the alarm buzzer sound.

2. SPECIFICATIONS

SMOKE DETECTOR
Alarm Sound Level: 85 dB at 3 m (10 feet)
WIRELESS
Frequency Band (MHz): Europe: 433, 868, USA: 915
Modulation: GFSK
Tamper Alerts: Tamper event (removal of the unit from its bracket) is
reported once. Tamper restore is reported when the tamper switch is
restored
ALARM REPORT
In the alarm condition, the detector sends the alarm event to the control
panel. When the alarm condition is restored, the detector sends an
alarm restore event to the control panel and sets the alarm restore
indication (red LED blinks once per sec.)
Note: The alarm restore indication can be cleared via the control panel
only.
ELECTRICAL DATA
Power Source: 3 Volt CR123A / CR17450 lithium
Operation Voltage: From 2.5 V to 3 V.
Current Drain: 22 µA standby, 200 mA max. in operation
Smoke Density:
Europe: 0.09 – 0.14 dB/m
USA: 1.44%/ft to 2.74%/ft
Cover Range: 50 – 100 cubic meters (1770 – 3530 cubic ft.)
Battery Supervision: Automatic transmission of battery status data as
part of any transmitted message.
3. INSTALLATION
3.1 Disassembly
Separate the unit from its mounting bracket as shown in Figure 2.
D-302894

Installation Instructions

Note: The TEST/MUTE switch functions as TEST switch (in normal
operation) or as MUTE switch (in alarm condition).
The tamper switch actuator (Figures 9a and 9b) is pressed against the
bracket when the unit is attached to the bracket. Removal of the unit from
the bracket causes the switch contacts to open, creating a tamper event,
which is reported by the transceiver to the alarm system control panel.
Note: When the tamper switch is opened the detector becomes not ready
for operation.
A
A. BUZZER HOLE
B. TEST / MUTE BUTTON & LEDS
Figure 1. General View (SMD-427)
Battery Life Expectancy: 5 years for CR123A, 8 years for CR17450.
Audible and Visual Low Battery Warning
30 seconds simultaneously with red LED flashing (for up to 30 days
when the battery voltage drops).
Caution! Risk of explosion if battery is replaced by an incorrect type.
Dispose of used batteries according to the manufacturer's instructions.
Audible and Visual Degraded Chamber Sensitivity Warning: Built-
in horn beeps every 30 seconds in the middle of red LED flashing
intervals – indicates that the detector must be replaced.
Clean Warning Transmission: A clean (maintenance) signal is
transmitted when the detector's chamber becomes stained, causing the
detector to operate at high sensitivity.
PHYSICAL DATA
Operating Temperature: -10°C to 50°C (14°F to 122°F).
Relative Humidity: 10% to 85%
Dimensions:
SMD-426 120 mm (4.7") x 58 mm (2.3")
SMD-427 120 mm (4.7") x 63 mm (2.5")
Weight (including battery): 165 g (5.8 oz)
Compliance with Standards: EN54-7, EN 14604. EN 54-5, EN 60950,
EN 300220, EN 301489,
USA: (FCC) CFR47 Part 15
Canada: RSS210
Designed to comply with: UL 268
B
:
Built-in horn beeps every
1