Honeywell TC841A1000 Regional Control Module

General Description

The Honeywell TC841A1000 is a sophisticated Regional Control Module engineered explicitly for use with intelligent addressable fire alarm systems. It serves as an interface between intelligent fire alarm control panels and two-wire conventional smoke detectors. It effectively supervises the initiating device circuit (IDC) and transmits critical information about the detectors' operational status back to the control panel. This module is crucial in maintaining safety standards and quickly identifying and addressing potential issues.

Technical Specifications

l Nominal Operating Voltage: 15 to 32 VDC

l Maximum Current Draw: 5.1 mA (LED on)

l Average Operating Current: 300 μA (1 communication and 1 LED flash every 5 seconds)

l Maximum IDC Wiring Resistance: 25 ohms

l End-of-Line Resistance: 3.9K ohms

l External Supply Voltage: 24 VDC power limited

l Ripple Voltage: 0.1 Vrms maximum

l Maximum Current per Module: 90 mA

l Temperature Range: 32°F to 120°F (0°C to 49°C)

l Humidity Range: 10% to 93% non-condensing

l Dimensions: 4.5" H x 4" W x 2.125" D

Detailed Features

A. Supervision of IDC Wiring: Monitors wiring integrity, ensuring faults are promptly reported.

B. LED Status Indicators: These provide visual feedback on module operation, flashing during regular operation and steady during an alarm condition.

C. Direct Address Selection: This feature utilizes rotary switches for easy configuration within FlashScan loops (addresses from 01 to 159) or CLIP loops (addresses from 01 to 99).

D. High Noise Immunity: Designed to operate effectively in environments with electromagnetic interference (EMI) or radio frequency interference (RFI).

E. SEMS Screws with Clamping Plates: Facilitates easy wiring connections, enhancing installation efficiency.

Applications

The TC841A1000 is suitable for:

1. Monitoring zones of two-wire smoke detectors in commercial buildings.

2. Integration into intelligent fire alarm systems for enhanced safety measures.

3. Use in environments requiring reliable fire detection, such as schools, hospitals, and office complexes.

Installation

l Mounting Requirements:

n The TC841A1000 can be mounted directly onto a standard electrical box or surface-mounted using optional backboxes like the SMB500.

n Ensure that the installation complies with local building codes and regulations.

l Wiring Instructions:

n Connect wiring according to the specifications outlined in the installation manual.

n Use a minimum wire length of 6 inches (15.24 cm) for connections.

n Install a 3.9K ohm end-of-life resistor (EOLR) across terminals as specified for Style B or Style D circuits.

l Address Setting:

n Set the module address using the built-in rotary switches based on system requirements.

n Avoid duplicating addresses within the system to ensure proper functionality.

l Final Checks:

n Verify all connections before powering up the system.

n Check LED indicators to confirm communication with the control panel.

Related Part Numbers

l TC841A1000CDN: Dual two-wire detector monitor module suitable for ULC applications.

l TC809D1004: Monitor module supporting dual independent Class B circuits.

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