
25mm
5mm
03mm
45mm~75mm
Mounting 
Hole
Z
-
0
3
D
Conduit
Back Box
Detector
Base
C-9101 Conventional Combination 
Heat/Photoelectric Smoke Detector  
Features 
  Drift compensation to suit environment changing 
extensively. 
  Integrated algorithm for analyzing fire, improving 
the sensitivity highly. 
  Self-diagnostic. 
  Removable innovative sensing chamber, easy for 
maintenance. 
  Reporting dirt fault for contaminated chamber. 
  Remote indicator output available.  
  3 levels sensitivities programmable; Level 1 
complies with EN 54-7. Fix temperature or rate of 
rise programmable, rate of rise mode complies 
with EN 54-5. 
Description  
C-9101 Conventional Combination Heat/Photoelectric 
Smoke Detector is consisted of smoke sensing and 
semi-conductor temperature sensing parts in 
processing and circuitry. Matching with P-9907 Active 
End of Line Unit (AEOL), it can be connected with 
conventional fire alarm control panel or intelligent fire 
alarm control panels through I-9319 Addressable Zone 
Monitor Unit to execute signal processing. This 
non-addressable detector has the advantages of both 
conventional photoelectric detector and rate of rise 
and fixed temperature heat detector. Just because of 
the combination technology of smoke detector and 
heat detector, it overcomes the non-sensitivity to dark 
smoke particles of ordinary scattering type 
photoelectric detectors. It can also pick up fire with 
obvious rise of temperature such as alcohol fire, thus 
extending the application range. 
Connection and Cabling  
Fig.1 shows the detector bottom and Fig. 2 the base. 
     Fig. 1                   Fig. 2 
There are four terminals with numbers on the base. 
1: Detection zone positive IN 
2: Detection zone positive OUT 
3: Detection zone negative IN and OUT 
2: Positive terminal of remote indicator 
4: Negative terminal of remote indicator 
Recommended Cabling 
1.0mm2 or above fire cable for all the wires, laid out 
through metal conduit or flame retardant conduit, 
subject to local codes. 
Fig. 3 shows mounting of the detector. 
Fig. 3 
Applications 
Warning: The alarm current depends on the 
current limit of the control panel. 24VDC cannot 
power the detector directly. Otherwise the detector 
will be blown up for lack of current limit resistor. 
Level 1 is defaulted, which can be modified by 
P-9910B programmer. Please refer to P-9910B Hand  
Held Programmer Installation and Operation Manual 
for details. 
In power-on state of the programmer, input unlocking 
password and press Clear to unlock. Press Function, 
then press “3”, the screen shows “-” at the last digit.  
Input corresponding sensitivity or parameter and press 
Program, the screen will show a “P”, the 
corresponding sensitivity or parameter is programmed. 
Press Clear to clear the "P". Input locking password 
and press Clear to return. 
Parameters set using programmer 
Installation 
A fixed installation direction is ensured by the location 
elements on the detector and the base. Fix the base 
with two tapping screws, and then align mark C on the 
detector with A on the base, rotate the detector to align 
mark C with mark B (Refer to Fig. 1 and 2 for the 
position of the marks), the detector will be fitted to the 
base. 
30309172                                                                          Issue 1.01 
Rate of rise and level 1 is defaulted. 
1.  When the detector is connected with conventional 
fire alarm control panel (those within the dotted line 
are equivalent to a conventional fire alarm control 
panel) or I-9319 addressable zone monitor unit in 
series, if a P-9907 AEOL is connected to the end of 
output loop, an 1N5819 Diode should be connected to 
the detector base. 

1)  Used as the detector base, the AEOL is to install a 
Remote Indicator
P-9907 AEOL
-
+
Conventional MCP
-
+
Conventional Detector
Output+
Output-
Diode
Fire Alarm Control Panel
Diode
Remote Indicator
Conventional Detector
          I-9319 
Addressable Zone Monitor Unit
Remote Indicator
P-9907 AEOL
-
+
-
+
Conventional Detector
Output+
Output-
Diode
Fire Alarm Control Panel
Remote Indicator
Diode
Conventional Detector
Conventional MCP
         I-9319
Addressable Zone Monitor Unit
Remote Indicator
-
+
Conventional Detector
-
+
Output+
Output-
4.7k
Ω Resistor
Fire Alarm Control Panel
Conventional Detector
Conventional MCP
Remote Indicator
          I-9319
Addressable Zone Monitor Unit
Red: flashes in normal and 
illuminates in alarm. 
The LED is quiet in fault. And it 
lights and then turns out about 
every  three  seconds 
periodically when reported 
dirty. 
Directly  connecting  with 
indicator  (built-in  5.1kΩ  
resistor,  maximum  output 
current is 5.0mA). Quiet in 
normal condition. Flashes in 
alarm. 
Instantaneous Power-off (10s 
MAX., 1.5VDC MAX.) 
Polarized 2-core for detection 
zone cable. 
Polarized 2-core for remote 
indicator. 
Ingress  Protection 
Rating 
Diameter: 100mm 
Height: 56mm (with base) 
This document is subject to change without notice. Please contact GST for more information or questions. 
Gulf Security Technology Co., Ltd. 
No. 80, Changjiang East Road, QETDZ, Qinhuangdao, Hebei, P. R. China 066004 
Tel: +86 (0) 335 8502528 Fax: +86 (0) 335 8508942 gst.info@fs.utc.com www.gst.com.cn 
conventional detector on it. The system 
connection is shown in Fig. 4. 
Fig. 4 
2)  When the AEOL is not used as the detector base, 
a cover should be added, the system connection 
is shown in Fig. 5. 
Fig. 5 
2.  When the detector is connected with conventional 
fire alarm control panel (those within the dotted line 
are equivalent to a conventional fire alarm control 
panel) or I-9319 Addressable zone monitor unit in 
series, if an end of line resistor is connected to the end 
of output loop, then no diode is connected to the 
detector base. The system connection is shown in  
Fig. 6. 
  After cleaning, install the detector again, and test 
after re-installing. Notify the proper authorities 
when the system is back in service. 
  Fire simulation test should be made to the 
detector once half a year. 
Specification 
Fig. 6 
Maximum 15 detectors can be connected in one zone. 
Cooperating with end of line device, the compatible 
panel can monitor the cable for open circuit and short 
circuit. Panel will report if any detector is removed. 
With the AEOL, the functioning of other device will not 
be affected by the detector removal. 
Accessories and Tools 
Maintenance 
  The detector should be installed just before 
commissioning and kept well before installation, 
taken corresponding measures for dust-proof, 
damp-proof and corrosion-proof. 
  The dust cover cannot be removed until the 
project has been plunged into usage, otherwise it 
cannot alarm normally. 
  The detector should be cleaned at least once a 
year to ensure normal operation of the system. 
  If nuisance alarms are often found of the detector 
on site, the sensing chamber should be cleaned 
and replaced when necessary. 
  Before cleaning, notify the proper authorities that 
the system is undergoing maintenance and will 
temporarily be out of service. Disable the zone or 
system undergoing maintenance to avoid 
unwanted alarms. 
30309172                                                                          Issue 1.01 
Limited Warranty  
GST warrants that the product will be free of charge 
for repairing or removing from defects in design, 
materials and workmanship during the warranty period. 
This warranty doesn’t cover any product that is found 
to have been improperly installed or used in any way 
not in accordance with the instructions supplied with 
the product. Anybody, including the agents, 
distributors or employees, is not in the position to 
amend the contents of this warranty. Please contact 
your local distributor for products not covered by this 
warranty.