NOTIFIER SDX-551TH Plug In Intelligent Photoelectronic Sensor Instruction Manual
- June 9, 2024
- NOTIFIER
Table of Contents
Division of Pittway Corporation
SDX-551TH Plug In Intelligent Photoelectronic Sensor
Instruction Manual
SDX-551TH Plug In Intelligent Photoelectronic Sensor
INSTALLATION AND MAINTENANCE INSTRUCTIONS FOR MODEL SDX-551/SDX-551TH PLUG-IN
INTELLIGENT PHOTOELECTRONIC SENSOR WITH COMMUNICATIONS
Before installing sensors, please thoroughly read the system wiring and
installation manual, which provides detailed information on sensor spacing,
placement, zoning, and special applications. Copies of these manuals are
available from Notifier.
GENERAL DESCRIPTION
The model SDX-551/SDX-551TH photoelectronic sensor utilizes a state-of-the-
art, optical sensing chamber. This sensor is designed to provide open area
protection, and to be used with compatible UL-listed NOTIFIER control panels
only. Suitable for use with panel Model AM2020, Loop Interface Board, LIB-200;
compatibility ID:A; maximum number of sensors per loop is 99. See 155-531,
Revision A, for installation and wiring diagrams.
Two LEDs on each sensor light to provide a local 360° visibility of the sensor
indication. The LEDs can be latched ON by code command from the panel for an
alarm indication. The LEDs can also be unlatched to the normal condition by
code command. Remote LED annunciator capability is available as an optional
accessory (part no. RA400Z).
The SDX-551TH adds a thermal heat collector that alarms at a fixed temperature
of 135° F.
SPECIFICATIONS
Diameter:| 6.1 inches (15.5 cm) installed in BX-501
4.1 inches (10.4 cm) installed in B501
---|---
Height:| 2.3 inches (5.8 cm)
Add 0.5 inches (1.3 cm) for thermal models
Weight:| 9.6 ounces (272 gm)
Installation Temperature Range
SDX-551:| 32° to 120° F (0° to 49° C)
SDX-551TH:| 32° to 100° F (0° to 38° C)
Operating Humidity Range:| 10% to 93% Relative Humidity
Mounting:| BX-501 flanged base
B501 flangeless base
B501 with RMK400 recessed mounting kit
Maximum Air Velocity:| 3000 Ft./Min. (15 m/S)
Voltage Range:| 15 to 32 Volts DC Peak
Standby Current:| 150 µA @ 24 VDC
LED Current:| 6 mA @ 24 VDC
WIRING GUIDE
Refer to the installation instructions for the particular plug-in base being
used: 1) for the BX-501 base (D550-01-01); 2) for the B501 base (D550-02-00);
3) for the RMK400 used with the B501 base (D450-07-00). Bases are provided
with screw terminals for power, ground, and remote annunciator connections.
See Figure 1.
NOTE: All wiring must conform to applicable local codes, ordinances, and
regulations.
NOTE: Verify that all sensor bases are installed and that the wiring
polarity is correct at each base.
WARNING: Remove power from the loop before installing sensors.
-
Install sensors:
a. Verify that the sensor type matches the type written on the label on the base.
b. Set the sensor to a desired address and then write the address on the label on the base.
c. Place the sensor into the sensor base.
d. Turn the sensor clockwise until it drops into place.
e. Continue turning the sensor clockwise until it locks into place.
WARNING: Sensor will not detect smoke if dust cover is installed. -
Tamper-proof feature:
The sensor bases include a tamper-proof feature that, when activated, prevents removal of the sensor without the use of a tool. See the installation instruction manual for the sensor base for details in using this feature. -
After all sensors have been installed, apply power to the control unit.
-
Test all sensors per the TESTING section of this manual.
TESTING
Before testing, notify the proper authorities that the smoke sensor system is
undergoing maintenance, and therefore the system will temporarily be out of
service. Disable the zone or system undergoing maintenance to prevent unwanted
alarms.
Sensors must be tested after installation and periodic maintenance. The sensor
may be tested in the following ways:
A. Test Magnet (Model No. M02-04-00)
1. Place the magnet against the cover opposite the test module socket to
activate the test feature (see Figure 2).
2. The LEDs should latch on within 10 seconds indicating alarm and
annunciating the panel.
B. Test Module (Model No. MOD400R)
The MOD400R is used with your DMM or voltmeter to check the sensor sensitivity
as described in the MOD400R’s manual.
NOTE: If the sensor’s sensitivity limits or the MOD400R limits do not appear
on the back of the sensor, the MOD400R is not suitable for field sensitivity
testing of that unit.
C. Aerosol Generator (Gemini 501) per NFPA 72
The field test tool is the Gemini Model 510 aerosol generator. Set the
generator to represent 4%/ft to 5%/ft obscuration as described in the Gemini
501 manual. Using the bowl shaped applicator, apply aerosol until unit alarms.
D. Direct Heat Method (Hair dryer of 1000-1500 watts)
Direct the heat toward the thermal collector, holding the heat source about 12
inches away from the detector to avoid damage to the plastic. The detector
will reset only after the collector has had sufficient time to cool and the
power source has been momentarily interrupted. NOTE: This test only verifies
proper operation of the sensor and is not used to test sensitivity.
After testing, detectors must be reset from the control panel. Notify the
proper authorities that the system is back on line.
Sensors that fail these tests should be cleaned as described under CLEANING
and retested. If the sensors still fail these tests they should be returned
for repair.
CAUTION
A dust cover is not a substitute for removing sensor during new construction
or heavy remodeling. Cover only helps limit dust entry.
CLEANING THE SDX-551/SDX-551TH SENSOR
NOTE: Before cleaning, notify the proper authorities that the smoke
sensor system is undergoing maintenance and will temporarily be out of
service. Disable the loop or system undergoing maintenance to prevent unwanted
alarms.
It is recommended that the sensor be removed from its mounting base to
facilitate easier cleaning. See Figure 3. The sensor is cleaned as follows:
- Remove the sensor cover by placing a small bladed screwdriver in the side slot of the sensor cover, twisting it slightly until the cover can be turned counterclockwise for removal.
- Vacuum the screen carefully without removing it. If further cleaning is required continue with Step 3, otherwise skip to Step 6.
- Remove the screen by pulling it straight out. Vacuum the inside.
- Clean the vaned chamber piece by vacuuming or blowing out dust and particles.
- To replace the screen, orient it so that the arrow on top aligns with the field test slot on the base of the detector. Carefully push the screen onto the base making sure it fits tightly to the chamber.
- Replace the cover by gently rotating it clockwise until it locks in place.
WARNING Limitations of Smoke Detectors:
This smoke detector is designed to activate and initiate emergency action, but
will do so only when it is used in conjunction with an authorized fire alarm
system. This detector must be installed in accordance with NFPA standard 72.
Smoke detectors will not work without power. AC or DC powered smoke detectors
will not work if the power supply is cut off.
Smoke detectors will not sense fires which start where smoke does not reach
the detectors. Smoldering fires typically do not generate a lot of heat which
is needed to drive the smoke up to the ceiling where the smoke detector is
usually located. For this reason, there may be large delays in detecting a
smoldering fire with either an ionization type detector or a photoelectric
type detector. Either one of them may alarm only after flaming has initiated
which will generate the heat needed to drive the smoke to the ceiling.
Smoke from fires in chimneys, in walls, on roofs or on the other side of a
closed door(s) may not reach the smoke detector and alarm it. A detector
cannot detect a fire developing on another level of a building quickly or at
all. For these reasons, detectors shall be located on every level and in every
bedroom within a building.
Smoke detectors have sensing limitations, too. Ionization detectors and
photoelectric detectors are required to pass fire tests of the flaming and
smoldering type. This is to ensure that both can detect a wide range of types
of fires. Ionization detectors offer a broad range of fire sensing capability
but they are somewhat better at detecting fast flaming fires than slow
smoldering fires. Photoelectric detectors sense smoldering fires better than
flaming fires which have little, if any, visible smoke. Because fires develop
in different ways and are often unpredictable in their growth, neither type of
detector is always best, and a given detector may not always provide early
warning of a specific type of fire.
In general, detectors cannot be expected to provide warnings for fires
resulting from inadequate fire protection practices, violent explosions,
escaping gases which ignite, improper storage of flammable liquids like
cleaning solvents which ignite, other similar safety hazards, arson, smoking
in bed, children playing with matches or lighters, etc. Smoke detectors used
in high air velocity conditions may have a delay in alarm due to dilution of
smoke densities created by frequent and rapid air exchanges. Additionally,
high air velocity environments may create increased dust contamination,
demanding more frequent maintenance.
Smoke detectors cannot last forever. Smoke detectors contain electronic parts.
Even though smoke detectors are made to last over 10 years, any part can fail
at any time. Therefore, smoke detectors shall be replaced after being in
service for 10 years. The smoke detector system that this detector is used in
must be tested regularly per NFPA 72. This smoke detector should be cleaned
regularly per NFPA 72 or at least once a year.
D500-02-00
www.PDF-Zoo.com
firealarmresources.com
I56-309-03 © Notifier 1990/Rev. 5-96