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5

DETECTOR TESTING

Only qualified service personnel should test. To assure
proper operation of the detector, both the Sensitivity and
Functional Test should be conducted. The minimum test
schedule may be found in the current edition of NFPA 72.
The CO sensor of the OOHC941 has a 10-year lifetime
from the date of installation.

SENSITIVITY MEASUREMENT

The  sensitivity  of  OOHC941  detectors  can  be  tested
individually  using  the  DPU.  Refer  to  the  DPU  Manual,
P/N 315-033260. The sensitivity can be measured by the
panel. Follow the instructions of the panel used.

Polarity insensitive wiring:

Figure 2

Isolator mode wiring:

Figure 3

Wire size: maximum 14 AWG, minimum 18 AWG (Wire larger than 14 AWG can damage the connector)

FROM ADDRESSABLE

DEVICE CIRCUIT OF A
COMPATIBLE CONTROL
UNIT OR PREVIOUS

ADDRESSABLE DEVICE

OPTIONAL

REMOTE
ALARM
INDICATOR

MODELS
8727W / 8727C /

RL-HW / RL-HC

TO NEXT BASE

TO NEXT BASE

DO NOT USE AN

END OF LINE DEVICE

DETECTOR BASE

MODEL DB-11/DB-11E

LINE 1 *

LINE 2 *

5

6

1a

TB1

TB3

TB2

1b

5

6

1a

1b

** The relay contacts are shown after System reset, which represents the non-alarm condition.

* OOHC941 is a polarity insensitive detector. Line 1 and Line 2 can be either line of the loop.

5

NO

C

NC

6

SUPERVISED AND POWER LIMITED

RELAY 

**

CONTACTS

3A, 120 VAC
3A, 30 VDC

DO NOT USE AN
END OF LINE DEVICE

OPTIONAL

REMOTE
ALARM

INDICATOR
MODELS
8727W / 8727C /

RL-HW / RL-HC

TO NEXT BASE

TO NEXT BASE

DO NOT USE AN
END OF LINE DEVICE

DETECTOR BASE

MODEL DB-11/DB-11E

LINE 1

LINE 2

5

6

1a

TB1

TB3

TB2

1b

5

6

1a

1b

* The relay contacts are shown after System reset, which represents the non-alarm condition.

5+

NO

C

NC

6-

RELAY 

*

CONTACTS

3A, 120 VAC
3A, 30 VDC

DO NOT USE AN
END OF LINE DEVICE

+

+

To initiating circuit of
SIEMENS compatible control unit

Summary of Contents for OOHC941

Page 1: ...datory to closely follow the installation drawings In all installations place the detector on the ceiling a minimum of 6 inches from a side wall or on a wall 12 inches from the ceiling For CO gas detection applications follow detector installation requirements in NFPA 72 for Installation of Carbon Monoxide Detection and Warning Equipment For thermal detection use the matrix below Spacing Feet Temp...

Page 2: ... can also be installed in duct applications between 0 and 4000 ft min For duct installations follow detector installation requirements in NFPA 90A Chapter for Special Ceiling Construction Factors When the detectors employ a fixed temperature rating of 165 F 74 C or less they are intended for a maximum installation temperature of 100 F 38 C LED INDICATOR OPERATION The Model OOHC941 contains an LED ...

Page 3: ...op When the OOHC941 is wired for Isolator mode the positive line needs to be connected to 1b and the negative line to 6 The next device needs to be connected to 1b and 5 The Line Isolator is located between connector 6 and 5 NOTICE Ensure that the panel supports Isolator mode for the OOHC941 product version 30 Isolator mode must not be used with a OOHC941 product version 30 You will find the produ...

Page 4: ...mitory Airborne dust and temperature changes living quarters Cooking fumes smoking and steam Utility Room Transformer room normal to somewhat dirty environment heat from running equipment Lobby Relatively clean area temperature changes cellular phones some outside particulate Office Reasonably clean climate controlled atmosphere Hotel Life safety some temperature swings steam smoking and cooking p...

Page 5: ...TIBLE CONTROL UNIT OR PREVIOUS ADDRESSABLE DEVICE OPTIONAL REMOTE ALARM INDICATOR MODELS 8727W 8727C RL HW RL HC TO NEXT BASE TO NEXT BASE DO NOT USE AN END OF LINE DEVICE DETECTOR BASE MODEL DB 11 DB 11E LINE 1 LINE 2 5 6 1a TB1 TB3 TB2 1b 5 6 1a 1b The relay contacts are shown after System reset which represents the non alarm condition OOHC941 is a polarity insensitive detector Line 1 and Line 2...

Page 6: ...ensitivity and cause CO sensor troubles This test is simply used to ensure that smoke can enter the sensing chamber and alarm the control panel when the detector reaches the programmed obscuration concentration level CAUTION DO NOT use any test gas other than the one mentioned above as compatibility to the CO sensor cannot be assured CO DETECTOR FUNCTIONAL TEST CO TEST GAS The fire control panel m...

Page 7: ...pecial applications setting incorporates a pre alarm and sensitive alarm levels to provide a Very Early Waring Fire Detection VEWFD alarm level for applications to avoid business disruption Typical suitable applications for the special applications Telecommunications application profile include Telecommunications Data Centers IT rooms Clean Rooms Laboratories and any clean environment Applications...

Page 8: ...equipment in accordance with installation instructions manual Read the following information This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions manual may cause interference to radio communications It has been tested and found to comply with the limits for a Class A computing device pursuant to Part 15 of FCC Rules...

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