Honeywell Beam Smoke Detector Guide

Honeywell TC847A1004 Reflective Beam Smoke Detector: A Complete Guide to Selection, Installation, Debugging, and Troubleshooting

Introduction: Challenges of smoke detection in tall spaces and advantages of beam detectors

In large commercial courtyards, church domes, hangars, warehouses, sports arenas, and enclosed parking lots, traditional point type smoke detectors are difficult to work effectively due to smoke stratification effects and installation and maintenance difficulties. The beam type smoke detector detects smoke by emitting a beam of infrared light and measuring the attenuation of the light intensity at the receiving end, which can cover a protection range of tens to hundreds of meters. However, traditional dual ended radiation detectors require precise alignment of the transmitter and receiver, which is time-consuming and costly to install and debug.

Honeywell's TC847A1004 single ended reflective beam smoke detector integrates the transmitter and receiver into the same unit, requiring only one reflector to be installed, greatly simplifying the installation and alignment process. This detector is compatible with Honeywell's FlashScan ®  Or CLIP mode intelligent fire alarm controller, as well as FS90, XLS200, XLS1000 (CLIP mode only). Its working temperature range is wide from -22 ° F to 131 ° F (-30 ° C to 55 ° C), suitable for extreme temperature environments. This article will provide engineers with a detailed technical guide from selection comparison, installation and debugging, sensitivity setting, troubleshooting to maintenance testing.

Core features and technological advantages of the product

1.1 Single ended reflective design

Unlike traditional dual ended detectors, TC847A1004 integrates the transmitter and receiver into the same housing, with only one reflector installed on the opposite side. This brings the following advantages:

The installation time has been significantly reduced: there is no need to align two independent units, only one reflector needs to be aligned.

Simplified wiring: Only power supply and signal circuit connection are needed at the detector end, and the reflector does not require any electrical connection.

Easy maintenance: All debugging and testing operations are completed on the detector end.

1.2 Six optional sensitivity levels

The detector provides six sensitivity settings (specific settings are implemented through the controller):

Grade shading percentage display reading applicable distance range

Level 1 25% 25 16.4-120 ft (5-36.6 m)

Level 2 30% 30 25~150 ft (7.6~45.7 m)

Level 3 40% 40 60-220 ft (18.3-67 m)

Level 4 50% 50 80-328 ft (24.4-100 m)

Acclimate ®  Level 1 30%~50% A1 80~150 ft (24.4~45.7 m)

Acclimate ®  Level 2 40%~50% A2 80~200 ft (24.4~67 m)

Acclimate ®  The mode utilizes advanced software algorithms to automatically adjust the optimal sensitivity within a specified range according to environmental changes, especially suitable for places with large fluctuations in environmental smoke.

1.3 Built in Sensitivity Test Function (Integral Sensitivity Test)

TC847A1004 has a test filter driven by a servo motor inside. When activated through RTS151 or RTS151KEY remote testing station, the filter will automatically move into the optical path, simulating a certain degree of shading to verify the detector's response capability. This design enables users to meet the annual maintenance and testing requirements of NFPA 72 without physically contacting the detector. Attention: The servo motor requires external 24 VDC power supply, not SLC circuit power supply.

1.4 Automatic Gain Control (AGC)

The built-in automatic gain control circuit can compensate for signal attenuation caused by dust accumulation, extend the effective working cycle of the detector in polluted environments, and reduce false alarms and maintenance frequency.

1.5 Visual Alignment Assistance

The detector integrates an optical sight and a two digit digital signal strength display. Accurate adjustment can be achieved by observing the signal strength reading without the need for specialized tools.

Detailed explanation of technical specifications

2.1 Scope of Protection

Standard range: 16-230 feet (5-70 meters)

Expansion range: 230-328 feet (70-100 meters), requiring the optional long-distance kit BEAM LRK

2.2 Adjusting the angle

The optical components of the detector can be adjusted horizontally and vertically by ± 10 ° independently of the housing. This provides flexibility for installation on sloping ceilings or uneven walls.

2.3 Environmental specifications

Working temperature: -22 ° F to 131 ° F (-30 ° C to 55 ° C)

Humidity: 10% to 93% relative humidity, no condensation

Anti condensation heating kit: optional BEAMHK (for detector) and BEAMHKR (for reflector) to prevent condensation from forming (note: the heating kit does not change the rated operating temperature range, only prevents condensation)

2.4 Electrical specifications

Parameter values

Operating voltage (SLC) 15-32 VDC

Standby current (average) ≤ 2 mA @ 24 V

Alarm current ≤ 8.5 mA

Fault current ≤ 4.5 mA

Alignment mode current ≤ 20 mA

External power supply (for testing motors) 15-32 VDC, 0.5 A maximum