J200-07-00 2 I56-1930-02R
© 2003 Johnson Controls
This sensor can be functionally tested with a test magnet. The test magnet elec-
tronically simulates smoke in the sensing chamber, testing the sensor electronics
and connections to the control panel.
1. Hold the test magnet in the magnet test area as shown.
2. The sensor should alarm the panel.
Two LEDs on the sensor are controlled by the panel to indicate sensor status.
Coded signals, transmitted from the panel, can cause the LEDs to blink, latch on,
or latch off. Refer to the control panel technical documentation for sensor LED
status operation and expected delay to alarm.
B. Smoke Entry: Aerosol Generator
For 2951TMJ, smoke entry testing should be performed immediately following
the magnet test. Magnet test initiates an approximately 10 minute period when
the detector’s signal processing software routines are not active. Failure to first
perform the magnet test will introduce a time delay before the detector alarms.
The GEMINI model 501 aerosol generator can be used for smoke entry test-
ing. 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 the
panel alarms.
C. Direct Heat Method (Hair dryer of 1000-1500 watts). 2951TJ and 2951TMJ
only.
Direct the heat toward either of the side thermistors. Hold the heat source about
12 inches from the detector in order to avoid damage to the plastic. The detector
will reset only after it has had sufficient time to cool.
Both smoke and heat detection testing are recommended for verifying system protec-
tion capability.
A sensor that fails any of these tests should be cleaned as described under
CLEANING
, and retested. If the sensor fails after cleaning, it must be replaced and
returned for repair. When testing is complete, restore the system to normal operation
and notify the proper authorities that the system is back in operation.
HIGH SENSITIVITY SETTING
The use of the 0.2% to 0.5% per foot sensitivity setting requires a 90 day test period
to ensure that the detector’s environment is suitable for this setting. The following
steps must be followed to meet Johnson Controls and UL requirements for this high
sensitivity application:
1. Each detector intended for 0.2% to 0.5% per foot alarm application shall have
its initial alarm setting set for 0.5% obscuration per foot alarm level. The initial
pre alarm setting for the detector shall be set to the intended alarm setting of the
system. Pre alarm shall be set for non latching operation.
2. Detectors set at 0.2% to 0.5% per foot are intended for use in smoke-free, envi-
ronmentally controlled applications, such as computer rooms and clean rooms.
In order to determine if an environment is suitable for installation, the detectors
shall be operated continuously for 90 days with all environmental factors, including
temperature, humidity, air flow, occupancy, etc., similar to the intended application
for these detectors. An electronic history file or printer shall be used to record all
events associated with the detectors under testing.
3. At the end of 90 days, the results of the test shall be inspected by an authorized
Johnson Controls representative or the end user, if trained by an authorized
Johnson Controls representative. If no alarms or pre alarms are recorded for the
detectors under testing, the system may be set to the tested pre alarm level in the
0.2% to 0.5% per foot range.
CLEANING
Before removing the detector, notify the proper authorities that the smoke detector system is undergoing maintenance and will be temporarily out of service.
Disable the zone or system undergoing maintenance to prevent unwanted alarms.
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover by pressing firmly on each of the four removal tabs that hold the cover in place.
3. Vacuum the screen carefully without removing it. If further cleaning is required continue with Step 4, otherwise skip to Step 7.
4. Remove the chamber cover/screen assembly by pulling it straight out.
5. Use a vacuum cleaner or clean, compressed air to remove dust and debris from the sensing chamber.
6. Reinstall the chamber cover/screen assembly by sliding the edge over the sensing chamber. Turn until it is firmly in place.
7. Replace the cover using the LEDs to align the cover and then gently pushing it until it locks into place. Make sure that the thermistors do not become bent
under the cover on the 2951TJ and 2951TMJ.
9. Reinstall the detector.
10. Test the detector as described in TESTING.
11. Reconnect disabled circuits.
12. Notify the proper authorities that the system is back on line.
Please refer to insert for the Limitations of Fire Alarm Systems
FCC Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and,
if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interfer-
encewill not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.
LED Status
Indicators
Magnet Test
Marker
Test Magnet
Position
Test Magnet
Position
Magnet Test
Marker
Cover
Removal Tabs
Sensing
Chamber
Sensing
Chamber
Cover and
Screen
Sensor
Cover
Optional
Thermistors
(2951TJ and
2951TMJ)
Figure 3.
C0119-00
Figure 4.
C0163-00