GST DC-9105E User manual

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
Content
1. OVERVIEW............................................................................................1
2. FEATURES ............................................................................................1
3. TECHNICAL SPECIFICATIONS.........................................................2
4. STRUCTURE AND OPERATION PRINCIPLE.................................3
5. INSTALLATION AND CABLING........................................................5
1) AMBIENT CONDITIONS .........................................................................5
2) MOUNTING HEIGHT AND POSITION......................................................6
3) INSTALLATION .......................................................................................9
6. COMMISSIONING ..............................................................................14
7. CAUTIONS...........................................................................................17
8. OPERATION........................................................................................18
1) READ INFORMATION...........................................................................18
2) SET SENSITIVITY LEVEL.....................................................................18
3) SET LENGTH TYPE.............................................................................18
4) OTHER FUNCTIONS............................................................................19
9. MAINTENANCE..................................................................................20
10. ACCESSORIES...............................................................................20
11. WEEE INFORMATION...................................................................20
12. LIMITED WARRANTY....................................................................21
13. PRODUCT WARNINGS AND DISCLAIMERS...........................21
APPENDIX 1 WARNING............................................................................22
APPENDIX 2 WARRANTY........................................................................23

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
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1. Overview
DC-9105E Conventional Reflective Beam Detector (hereinafter
referred to as the detector) is a non-addressable smoke detector with
infrared optical beam. The reflective detector features of fire alarm and
fault contacts.
Combining a transmitter and a receiver, the detector connects only
one reflector on the opposite wirelessly. In this way, it is simple for
on-site wiring. One reflector or four reflectors are used based on
different mounting distance from a detector to a reflector.
The detector has an integral visible indicator and 2 bits digital tube.
It is easy to install and align the reflector as the visible indicator directs
the emitting infrared light. Alongside, it is convenient for commissioning
with 2 bits digital tube displaying received light intensity.
The detector is suitable for various applications including large
storage zones, shopping malls, fitness centers, gyms, exhibition halls,
hotel lobbies and areas with complex ceilings.
2. Features
1) Providing wide operating voltage and protection area.
2) Combining a transmitter and a receiver, one end connects wires
simply.
3) Judging fire alarms and faults intelligent with a built-in MCU.
4) Commissioning in field becomes easier than before with the help of
the visible indicator and 2 bits digital tube.
5) Monitoring faults inside the detector due to self-diagnosis ability.
6) Providing compensation for such sensor signal changes caused by
the build-up of dirt, position offset or a component aging.
7) Four sensitivities are available in field.
8) Standard: EN 54-12: 2015

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Installation and Operation Manual
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3. Technical Specifications
1) Operating Voltage: DC 24V (18V～28V）
2) Operating Current:
Standby Current ≤12mA
Alarm Current ≤22mA
Commission Current ≤20mA
3) Angle of Adjusting: -6～+6
4) Fire, fault contact output
Fire output contact: contact capacity is 28V/2A. Normally open in
normal state, closed in fire condition.
Fault output contact: contact capacity is 28V/2A. Closed in normal
state, and open during commissioning, power off or in fault
condition.
5) Maximum Angular Misalignment: ±0.5
6) Sensitivity Level (Any of the following sensitivities can be set at
allowed distance):
Level 1: 1.3dB
Level 2: 1.8dB (factory default)
Level 3: 2.3dB
Level 4: 2.8dB (not EN 54-12:2015 approved)
7) State Indication:
Commission: Green LED and yellow LED illuminate or flash in a
way. Refer to Section VI Commission.
Normal Standby State: LED flashes red regularly.
Fire: Fire LED illuminates steadily and fire output contact is closed
as the detector in alarm.
Fault: Fault LED illuminates steadily and fault output contact is
open as the detector in fault.
Completely Obscure the Optical Beam Path: The detector gives

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Installation and Operation Manual
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fault signals and illuminates fault LED. In this condition, the
detector releases fire alarm as the optical beam path is obscured
more and more. Note: It doesn’t mean a fire occurs in this
case. As the obscuration is removed, fault signals are
cleared by the detector and fire signals are cleared by
switching off the power.
8) Operating Environment:
Temperature: -10C～+55C
Relative Humidity ≤95%，non condensing.
9) Protection Area: The detector can protect the area of 1400m2
(14×100＝1400m2) )with the widest 14m.
10) Length of Optical Beam Path: 5m～100m
11) Ingress Protection Rating:
IP 20 for ordinary environment;
IP 66 with glue treatment for special environment.
12) Dimensions:
206mm x 95mm x 95mm
13) Material and Color of Enclosure: ABS, grey
14) Weight: About 450g
15) Mounting Hole Spacing:
Dimensions for Embedded Mounting: 158mm
Mounting Hole Spacing for Surface Mounting: 79mm×96mm
4. Structure and Operation Principle
1) Appearance of the detector is shown in Fig.1.

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Installation and Operation Manual
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Fig.1
2) Componentsinside the detector and positions with glue are shown
in Fig. 2.
Fig. 2.
Cable
Entry
Commission
Zone
LEDs
Receiving Len
Emitting Len
Adjusting Wheel
Mounting Direction
Rotary Rack
Reed Switch
To Be Glued
To Be Glued
Power Cord
Flexible Cable
Digital Tube
Visible Red Light

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Installation and Operation Manual
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00m
Smoke
Reflector
Mounting
Bracket
Infrared
Beam
Detector
Fig. 3
5. Installation and Cabling
1) Ambient Conditions
The detector monitors and gives alarms by attenuation changes.
So, constant or causal obscuration should not appear in the optical
beam path.
The wall should be solid and flat to mount a detector or a reflector.
The detector is mounted vertically to the wall. Even if the wall looks like
flat, it may be uneven or become corrugated due to weather changes.
Therefore, the installer should ensure that those factors can’t have an
impact on the wall for detectors. In addition, the metal rack is used for
mounting detectors should be fixed without any vibration.
Not Fit for Locations Where，
➢The ceiling is higher than 40m.
➢It is not roofed.

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Installation and Operation Manual
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➢The ceiling is lower than 1.5m.
➢There is much dust, powder or vapor.
➢It generates a lot of dust in some certain conditions even
though it is clean in normal state.
➢The places are very hot. Note: The air temperature in the
transparent ceiling will exceed 55℃while the sun is
shining.
➢Places are not maintained.
➢The wall or bracket for mounting the detector is not stable due
to nearby mechanical vibration.
➢There are fixed or moving objects obscured within 1m of the
optical beam path.
➢The strong magnetic field exists.
2) Mounting Height and Position
The height for mounting a detector and reflector/s should be
depended on whether smoke enters the optical beam path directly and
quickly. Here are some references below.
a) As the space height is not over 5m, the detector and reflector/s
should be mounted on the walls which are opposite, having about
0.5m from the ceiling. Refer to Fig. 4.

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Installation and Operation Manual
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Reflector
Detector
5m
4.5m
Fig.4
b) As the space height is between 5m and 8m, the detector and
reflector/s should be mounted on the walls which are opposite,
having about from 0.5m to 1m from the ceiling. Refer to Fig. 5.
Detector
Reflector
7m
6m
Fig.5
c) As the space height is over 8m, the roof is normally gabled

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Installation and Operation Manual
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without ceiling. In this case, the detector and reflector/s should be
mounted on the walls which are opposite, having about 7m from the
floor and over 0.5m from the top. Refer to Fig. 6.
Detector Detector
Reflector Reflector
7m
8m
Fig.6
d) As the space height with gable structure is about 8m, the
detector and reflector/s should be mounted on the walls which are
opposite, having about 1.5m from the gabled girder. Refer to Fig. 7.

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Installation and Operation Manual
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Detector Detector
Reflector Reflector
6.5m
8m
Reflector
Detecor
Fig.7
e) The detector should be installed on the south wall of the
buildingsurrounded with glass and plastics. However, the detector
should be placed on the west wall when north-south installation
doesn’t work. A sunshade should be equipped with the optical
beam path for those applications where reflected sunlight can
shine on the detector. Besides, technical engineers in our
company can provide better solutions.
3) Installation
a) Optical Path Length
The optical path length of this detector should be set
according to applications before installation. It can be set through
length types.

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Installation and Operation Manual
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Mounting
Distance
Length Type
5～20m
20
20～40m
40
40～70m
70
70～100m
100（factory default）
The detector can be set according to mounting distance with
four different optical path lengths. Refer to Section VIII Operation
for details.
b) Detector Mounting
The detector and reflector/s should be installed on two walls
oppositely and horizontally. Refer to Fig.8.
Mounting
Bracket Detector Reflector
Fig.8
The detector is surface-mounted with conduit embedded or
conduit surface-mounted.
(1) Conduit Embedded
a. Remove the detector's top cover.
b. Aligning the detector base with the back box, put it close

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Installation and Operation Manual
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to the wall and make marks on the wall for mounting holes.
c. Drill holes on the marks and place 6 plastic expansion
bolts in the holes.
d. The wire putting through the cable entry should be
convenient for wiring.
e. The detector base should be fixed to the wall using two
plastic expansion bolts and two plain washers.
The mounting of the detector is shown in Fig.9.
Plastic Expansion Bolt
Electrical Box
Fig.9
(2) Conduit Surface-mounted
a. Put the mounting bracket close to the wall for the detector,
make marks for mounting holes.
b. Drill holes on the marks and place 6 plastic expansion
bolts in the holes.
c. The bracket should be fixed to the wall using four plastic
expansion bolts and four plain washers.
d．The wire putting through the cable entry after removing
the detector top cover should be convenient for wiring.

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Installation and Operation Manual
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e. The detectorbase should be fixed to the mounting bracket
using two M4×10 screws and two plain washers.
F. The mounting bracket should be earthed through a
mounting hole.
The mounting of the detector is shown in Fig.10.
Bracket
Plastic Expansion Bolt
Conduit
Fig.10
c) Mounting Reflector:
Reflector should be mounted on the position keeping the same
level with the detector but opposite to it. One reflector is required
as the distance from the detector to the reflector is between 5m
and 40m, when the actual distance installation between the
detector and the reflector is less than 10 meters, it is needed to
paste the non-reflective maskon the reflector because the infrared
light reflected by the reflector is too strong; four reflectors are
needed as the distance from the detector to the reflector is
between 40m and 100m. Two 6 plastic expansion bolts are used
to fix one reflector. Refer to Fig. 11a for details. Four reflectors
should be placed seamlessly when mounted. Refer to Fig.11b for

Detector
Hole for
Fixing
Bracket
Earth Mark
Mounting Hole

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Installation and Operation Manual
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details. The non-reflective mask refers to Fig.11c
Fig.11a (unit: mm)
Fig.11b (unit: mm)
119.2
56
97
Ø40
Fig.11c (unit: mm)

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Installation and Operation Manual
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d) Recommended Wiring
In field, D1, D2 (polarity insensitive) of a detector should be
connected to 24VDC power line. The reflector doesn’t need any
wires. K11 and K12 are fire output contacts. K21and K22 are
fault output contacts. The terminals of the detector are shown in
Fig.12.
D1
D2K11K12K22 K21
Fig.12
Wiring: 1.5mm2or above fire cable for D1, D2. 1.0mm2or above
twisted pair for K11, K12, K21 and K22. 1.0mm2or above for the grounding
wire.
Note: As the detector is mounted in the special environment
such as dust, damp, three positions as shown in Fig. 2 should be
sealed with glass glue or 703 silica gel after fixing and wiring,
ensuring the detector works stably.
6. Commissioning
1) Commissioning Steps
a）Protective film of the detector and the reflector should be removed
without scratching their surfaces.
Take off the top cover of the detector, and then switch on the power of
the detector. After two minutes, make the Magnet ○ Mof a
commission tool approach the reed switch (near the Fire LED)
located on the interface board of the detector. At the moment, the

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Installation and Operation Manual
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visible red light will be emitted by the detector, then remove the
commissioning tool
Adjust wheel and rotary rack to make sure the visible red light point
center of the reflector. Then observe the two bits digital tube, if it
shows “PP”: means the detector is commissioning automatically,
please keep the detector stay still. If shows “P..”: It means Step a)
works, please go to step b). If shows “0-99”: It means the received
light is too weak, the detector needs to be further alignment with the
reflectors. The number “0-99” can be used as a reference during
move the direction of the detector, the numbers will change from
small to large to indicate the received signal from weaker to stronger,
until shows “P..”, then go to step b). if shows “H0-H9”: It means the
received light is too strong, the detector needs to be further alignment
with the reflectors as well. “H0-H9” can be used as a reference to
move the direction of the detector because it means the light intensity
is from weak to strong. Until finally shows “P..”then go to step b).
Note: The received light should be ensured that it is reflected
from the reflector rather than from obstructions such as walls,
ceilings or pillars. As you can’t confirm it by observation, you
can use an opaque object to block the optical path to verify it.
b）Put on the detector cover gently, As the green LED illuminate
continuously, then fasten those two screws. If the green LED flash,
please go back to step a) and repeat the commissioning procedures.
c）The Commission LED illuminates green steadily. The Magnet ○ Mof
the commission tool should be put approach to the ○ Mof the detector.
As the yellow LED illuminates constantly, then remove the
commission tool quicklyand make sure there isno obscuration on the
optical pathway. After about 20 seconds, if yellow LED and green LED

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Installation and Operation Manual
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turn off. and red LED flashes periodically, this means the detector is at
the best position and has entered normal monitoring state. The
commissioning is finished. As the Yellow Led and the green LED
illuminate continuously, that means the detector is failed to calibrate
automatically and can’t enter normal monitoring state. Power on the
detector again, go back to step a) to repeat the commissioning
procedures.
2) Fire Alarm Testing
As the detector has been in standby state for over 20 seconds, use
Alarm Zone of IR light filter close to the detector to block the receiver
and transmitter parts windows. In this case, the detector should give
fire alarm and the red Fire LED turn on in 30 seconds.
Note: As the detector is set to sensitivity 1 or 2, fire alarm
testing uses IR Light Filter-1. As the detector is set to
sensitivity 3 or 4, fire alarm testing uses IR Light Filter-2. The
protective film covering two sides of IR Light Filter should be
removed carefully when the filter is used for the first time.
3) Fault Testing
Use Fault Zone of IR light filter close to the detector to block the
receiver or transmitter parts windows. The yellow fault LED should
turn on, detector will report fault, and the yellow fault LED turns off
with removing the filter immediately.
The Alarm Zone and Fault Zone of IR Light Filter are shown in Fig
13.

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Installation and Operation Manual
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Fig 13
4) Unqualified Products
Unqualified detectors should be dealt with according to Section IX
Troubleshooter and Maintenance. After treatment, the unqualified
detector should be tested again. Return it to the factory for repair if
the testing fails again.
7. Cautions
1. Warning: Power up only after all devices are well connected.
2. The detector should be calibrated after installation and every
maintenance.
3. In commissioning, the detector could give fault signals either sent
from the detection loop or from fault output contact.
4. The detector base should be installed directly on a solid wall or a
mounting bracket without deformation, those materials such as
paperboard, plastic board, foam board or thin wood board should be

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Installation and Operation Manual
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avoided between the detector base and the solid wall or the bracket.
8. Operation
The address, length type and sensitivity of a detector can be
programmed electronically by GST handheld programmer.
Connect the “D1,D2”terminals of the detector to the P-9910B
programmer.
1) Read Information
The information can be fast read through the programmer. Refer to
details below.
⚫As the programmer is connected and switched on, it will
display the address when pressing “Test”.
⚫Pressing “Up” the programmer will display the sensitivity level,
device type, and length type in sequence.
⚫Pressing “Down”, the programmer will display
above-mentioned information in reverse.
2) Set Sensitivity Level
Four sensitivity levels (from 1 to 4) can be set through the
programmer.
⚫Enter unlock password and press “Clear” to unlock the
programmer.
⚫The programmer displays “－”with “Function” and “3”pressed.
⚫Input corresponding sensitivity and press “Program”, “P” will
appear on the display as the sensitivity level is programmed
successfully. Otherwise, “E” will appear.
⚫As the programmer displays “0” with “Clear” pressed, the
further operations can continue.
3) Set Length Type
The length type can be set for the detector through the