FW2841 | Zone Module | Tongfang BMS

Technical Specifications

Model Number	FW2841
Product Name	Zone Module
Category	Hybrid Zone Module
Certification	UL Listed (UL864)
Manufacturer	Maple Armor / Tongfang
Warranty	2-Year Standard
Zone Capacity	2 Independent Zones (Style B/Class B)
Monitoring Points	Up to 50 devices per zone (max 100 total)
Input Types	Smoke detectors, Heat detectors, Manual call points
Output Types	1 Form C relay output (common for both zones)
Relay Rating	2A @ 30VDC, 0.5A @ 120VAC
Operating Voltage	15-32VDC
Current Consumption	Standby: 5mA, Active: 25mA
Communication Protocol	Proprietary MAP Protocol
Address Range	1-159 (Programmable)
Zone Isolation	Yes, independent zone monitoring
Zone Supervision	Style B (Class B) with EOL supervision
Zone LED Indicators	Individual LEDs for Zone 1 and Zone 2 status
Operating Temperature	-10°C to +55°C (14°F to 131°F)
Storage Temperature	-20°C to +70°C (-4°F to 158°F)
Humidity	10% to 93% RH (Non-condensing)
Enclosure	Plastic, DIN Rail Mountable
Dimensions (HxWxD)	4.5" x 3.2" x 1.4" (114 x 81 x 36mm)
Weight	0.45 lbs (0.20 kg)
Wire Gauge	12-22 AWG for field wiring
LED Indicators	Power, Communication, Zone 1, Zone 2, Relay
Short Circuit Protection	Yes, auto-resetting
Ground Fault Detection	Yes, per zone

Product Overview

The FW2841 Zone Module is a hybrid interface device that provides dual-zone monitoring capabilities for fire alarm systems. It combines zone monitoring with relay control functions, allowing for comprehensive fire detection and system integration in complex building environments.

Dual Zone Monitoring

Two independent Style B (Class B) zones with individual status monitoring and isolation.

UL Listed Safety

Certified to UL864 standards for fire alarm system components, ensuring code compliance.

Intelligent Detection

Advanced microprocessor-based design with programmable zone logic and detailed reporting.

Zone Monitoring Applications

Building floor separation zones

Tenant space isolation

Special hazard area monitoring

Elevator lobby zones

Mechanical room monitoring

Stairwell pressurization zones

Atrium smoke detection zones

High-rise floor zoning

Product Features

Zone Monitoring Features

2 independent Style B (Class B) zones
Up to 50 devices per zone (100 total)
Individual zone isolation and monitoring
End-of-line (EOL) resistor supervision
Ground fault detection per zone
Short circuit protection with auto-reset

Control Features

1 Form C relay output (common relay)
2A @ 30VDC contact rating
0.5A @ 120VAC contact rating
Programmable activation logic (zone 1 OR zone 2)
Manual override capability
LED status indication for relay

Communication Features

Proprietary MAP communication protocol
Programmable address (1-159)
Real-time zone status reporting
Two-way communication with FACP
Automatic device recognition
Individual zone fault reporting

Diagnostic Features

Individual LED indicators for each zone
Power and communication status LEDs
Zone fault detection and reporting
Relay contact monitoring
Self-test diagnostics
Communication fault detection

Flexible Zone Configuration: The FW2841 Zone Module supports various zone configurations including: Zone 1 only activation, Zone 2 only activation, Zone 1 OR Zone 2 activation (common relay), or individual zone reporting with separate control logic. This flexibility makes it ideal for complex building layouts.

Installation & Configuration

DIN Rail Mount

Standard 35mm DIN rail mounting

Panel Mount

Direct panel mounting option

Enclosure Mount

Mount within system enclosures

Installation Guidelines

Mount in dry, protected location
Ensure proper ventilation around module
Follow NEC, NFPA 72, and local electrical codes
Use proper cable strain relief
Maintain minimum 2" clearance around unit
Separate zone wiring for isolation

Wiring Requirements

Power Wiring

18-22 AWG for 15-32VDC power from FACP or separate supply.

Data Wiring

Twisted pair for MAP communication (18-22 AWG).

Zone Wiring

14-22 AWG for zone circuits with proper EOL resistors.

Relay Wiring

14-22 AWG for relay load circuits based on current requirements.

Configuration Steps

Mount the Zone Module on DIN rail or panel
Connect power supply (15-32VDC)
Connect data communication cables to FACP
Connect Zone 1 wiring with EOL resistor at end of line
Connect Zone 2 wiring with EOL resistor at end of line
Connect relay output to controlled device if used
Power up and assign module address via FACP programming
Configure zone monitoring parameters as required
Configure relay activation logic (zone 1, zone 2, or both)
Test zone monitoring and relay operation
Verify operation through system diagnostics

Zone Wiring Guidelines

Zone 1 Wiring

Connect detectors and devices for Zone 1 monitoring.

Zone 2 Wiring

Connect detectors and devices for Zone 2 monitoring.

EOL Resistors

Install appropriate EOL resistors (typically 4.7kΩ).

Compatibility & Applications

Compatible Systems

Maple Armor FW2000 Series
Maple Armor FW2100 Series
Maple Armor FW2200 Series
All Maple Armor FACP with MAP protocol
Compatible with legacy Tongfang systems

Typical Applications

Building floor zoning (multi-tenant)
Special hazard area isolation
High-rise building floor separation
Mixed occupancy building zoning
Healthcare facility zone isolation
Industrial process area zoning

Application Scenarios

Office Buildings

Separate tenant spaces with independent zone monitoring.

Healthcare Facilities

Isolate patient care areas from support spaces.

Industrial Facilities

Separate hazardous process areas from storage.

Benefits

Dual Zone: Independent monitoring of two zones

Code Compliance: UL Listed for regulatory requirements

Flexible: Multiple zone and relay configurations

Reliable: Industrial-grade components

Scalable: Expand system monitoring capabilities

Serviceable: Easy maintenance and troubleshooting