Bryant F Sensor and Controller Tests, Typical Smoke Detector System Wiring, Highlight B, Rtu-Mp

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B

D

C

F

E

A

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Fig. 26 - Typical Smoke Detector System Wiring

Highlight B

Smoke detector NC contact set will open on smoke alarm condition, de-energizing the ORN conductor.

Highlight C

24-v power signal via ORN lead is removed at Smoke Detector input on LCTB; all unit operations cease immediately.

RTU-MP Controls

Unit operating functions (fan, cooling and heating) are terminated as described above. In addition:

Highlight D

On smoke alarm condition, the smoke detector NO Alarm contact will close, supplying 24-v power to GRA conductor.

Highlight E

GRA lead at Smoke Alarm input on LCTB provides 24-v signal to FIOP DDC control.

RTU-MP

The 24-v signal is conveyed to RTU-MP’s J1-10 input terminal. This signal initiates the FSD sequence by the RTU-MP control. FSD status is reported to connected BAS network.

Using Remote Logic

Five conductors are provided for field use (see Highlight F) for additional annunciation functions.

Additional Application Data — Refer to Catalog No. HKRNKA-1XA for discussions on additional control features of these smoke detectors including multiple unit coordination. (See Fig. 26.)

Sensor and Controller Tests

Sensor Alarm Test

The sensor alarm test checks a sensor’s ability to signal an alarm state. This test requires that you use a field provided SD-MAG test magnet.

!CAUTION

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel and authority concern.

This test places the duct detector into the alarm state. Unless part of the test, disconnect all auxiliary equipment from the controller before performing the test. If the duct detector is connected to a fire alarm system, notify the proper authorities before performing the test.

Sensor Alarm Test Procedure

1.Hold the test magnet where indicated on the side of the sensor housing for seven seconds.

2.Verify that the sensor’s Alarm LED turns on.

3.Reset the sensor by holding the test magnet against the sensor housing for two seconds.

4.Verify that the sensor’s Alarm LED turns off.

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