Honeywell Beam Smoke Detector Guide

Serious contamination on the surface of the reflector. Clean the surface of the reflector

Check the fixing of the mirror for misalignment or looseness, and realign it

5.2 False alarm

Possible cause inspection and resolution

Sensitivity setting too high (overly sensitive) Choose a more suitable sensitivity based on actual distance (such as changing from 30% to 40%)

There are intermittent obstructions in the light path (such as moving people, vehicles, equipment). Adjust the installation position or add protective fences

Consider using Acclimate for environmental smoke sources such as welding and forklift exhaust ®  Mode allows the detector to automatically adapt to the environment

Dirty mirrors or optical windows cause signal attenuation. After cleaning, observe whether the signal strength recovers

5.3 Unable to activate remote testing function

Possible cause inspection and resolution

Test if the external power supply of the motor is not connected or the voltage is insufficient. Measure the external 24 VDC power supply to ensure that the voltage is between 15-32 V and the current capacity is ≥ 0.5 A

Remote testing station wiring error: Refer to the wiring diagram and reconnect RTS151 (usually 2-wire or 3-wire)

Use a multimeter to measure the resistance of the motor coil (which should not be zero or infinite) for servo motor faults. If there is a problem, replace the detector

5.4 Unstable signal strength readings

Possible cause inspection and resolution

Install the base vibration (if there are large fans or compressors nearby) and use the 6500-MMK heavy-duty multi installation kit to strengthen the fixation

Loosen the reflector and re tighten it

There is strong hot air flow or steam in the environment. Adjust the installation position or add protective covers

Maintenance and testing: meet NFPA 72 year inspection requirements

6.1 Annual testing using built-in test filters

According to NFPA 72 requirements, beam smoke detectors need to undergo sensitivity testing annually. The traditional method requires manual use of filters to block the light path, while the built-in testing function of TC847A1004 automates this process:

Connect an external 24 VDC power supply to the test motor terminals.

Activate the remote testing station (RTS151) or through controller commands.

The servo motor moves the filter into the optical path and simulates the predetermined shading rate.

The detector should enter an alarm state, the red LED should light up, and the controller should receive an alarm signal.

After the test is completed, reset the detector (which can be done through a remote testing station or controller) and remove the filter from the optical path.

Advantages: No need for high-altitude operations, no need for physical contact detectors, safe and efficient.

6.2 Cleaning of reflectors and optical windows

Frequency: Every six months or depending on the level of environmental dust.

Method: Use a soft cloth and mild glass cleaner to avoid scratching the mirror surface.

Attention: After cleaning, the signal strength reading should be checked, and if there is a decrease, it needs to be realigned.

6.3 Maintenance of Heating Kit

If BEAMHK (detector heater) or BEAMHKR (reflector heater) is installed, it should be checked regularly:

Is the power supply voltage of the heater normal (15-32 VDC).

Observe whether the optical window condenses in a low temperature and high humidity environment. If condensation occurs, it indicates that the heater may be malfunctioning.

Accessories and replacement options

When the original detector is discontinued or needs to be upgraded, TC847A1004 and its accessories provide a flexible replacement solution.

7.1 Main accessory models

Model Usage

TC847A1004/TC847A1004A standard detector (A is ULC certified version)

BEAM LRK Long Distance Kit (for 70-100 m)

BEAMMMK Multi Installation Kit (Ceiling or Wall Installation, Increased Adjustment Angle)

BEAMSMK surface mounting kit

BEAMHK detector heating kit (anti condensation)

BEAMHKR reflector heating kit (anti condensation)

RTS151/RTS151A remote testing station (A is ULC certified version)

RTS151KEY/RTS151KEYA remote testing station with key lock

6500-MMK heavy-duty multi installation kit (anti vibration)

6500-SMK surface mounting kit (for use with 6500-MMK)

7.2 Precautions when replacing old models

Controller compatibility: Confirm if the fire alarm controller supports FlashScan ®  Or CLIP mode. TC847A1004 provides more features and faster response in FlashScan mode.

Distance matching: If the installation distance of the old system exceeds 230 feet, the BEAMLRK kit must be purchased, otherwise the detector will not work properly.

Power requirements: The old system may not have provided an external 24 VDC power supply for the test motor. When replacing, an independent power module (15-32 VDC, 0.5 A) needs to be added.

Installation hole position: Check if the installation base of the old detector is compatible with TC847A1004. If necessary, use BEAMSMK or BEAMMMK for adaptation.

Mirror replacement: If using a long distance, it is necessary to replace it with a large-sized mirror (15.7 "× 18.1") at the same time.