Maple Armor FW2831 Addressable Dual Relay Control Module (2 Form C Dry Contacts)

Description

The Maple Armor FW2831 Addressable Relay Module is an intelligent, high-performance control interface engineered to provide auxiliary switching for critical facility infrastructure during emergency fire conditions. Designed to operate seamlessly on the Signaling Line Circuit (SLC) of Maple Armor FW2105 and FW2107 panels, the Maple Armor FW2831 Addressable Relay Module requires only a single address while driving two heavy-duty Form C dry-contact relay outputs. Fully compliant with UL 864 10th Edition and CAN/ULC-S527 standards, the Maple Armor FW2831 Addressable Relay Module provides dependable command execution for HVAC fan shutdown, elevator primary/secondary recall, stairwell pressurization, access control door unlocking, and smoke damper actuation.

Technical Specifications Table

Isolated Auxiliary Switching & Building Automation Interlocking

The core design advantage of the Maple Armor FW2831 Addressable Relay Module is its isolated Form C electromechanical relay architecture. By providing two completely isolated sets of changeover dry contacts (NO, NC, COM), the module allows fire alarm engineers to interlock high-voltage auxiliary circuits or low-voltage control lines directly without feeding external electrical noise back into the sensitive fire signaling loop.

Upon command from the fire alarm control panel, both onboard relays switch simultaneously. This makes the Maple Armor FW2831 Addressable Relay Module ideal for scenarios requiring dual interlocks—such as cutting off power to air handling unit (AHU) supply fans while simultaneously closing motor-operated fire dampers, or dropping magnetic door holders while signaling building access control systems to unlock egress doors. Digital addressing via the handheld programmer eliminates error-prone mechanical switches, guaranteeing high communication reliability on dense addressable circuits.

• Dual Isolated Form C Relays: Provides simultaneous double-pole changeover switching for multi-circuit equipment interlocking.
• Complete Galvanic Isolation: Isolates heavy auxiliary loads from sensitive SLC communications to prevent electrical spikes.
• Single Address Loop Economy: Drives two functional relays while occupying only a single digital address on the central loop.
• Local Diagnostic Annunciation: Front status LED provides immediate local visual feedback for normal polling and activated states.

Frequently Asked Questions (FAQ)

Q1: What auxiliary building equipment can be controlled by the Maple Armor FW2831 Addressable Relay Module?
A: The FW2831 is used to control HVAC fan shutdowns, elevator recall and shunt trips, motorized smoke dampers, stairwell pressurization fans, electromagnetic door holders, security turnstile unlocking, and emergency generator start interfaces.

Q2: How many addresses does the FW2831 relay module occupy on the SLC loop?
A: It occupies only one logical address on the Signaling Line Circuit (SLC) while providing two simultaneous Form C dry-contact relay outputs.

Q3: Does the module supply 24VDC power on its relay terminals?
A: No. The FW2831 provides dry (unpowered) Form C contacts (Normally Open, Normally Closed, and Common). The power for the external load must come from the external equipment circuit or an auxiliary power supply.

Q4: How is the digital address set on the FW2831 module?
A: The address is electronically programmed into the module using the Maple Armor FW2411 handheld programmer before securing it into the electrical backbox.

Q5: What electrical backboxes can be used to install this relay module?
A: It mounts flush to standard North American 4-inch square electrical boxes (minimum 2-1/8 inch depth recommended) or surface mounts using Maple Armor FW800/FW801 plastic surface boxes.

Q6: Which fire alarm control panels are compatible with the FW2831?
A: It is fully compatible with Maple Armor Series 2 control panels, including the FW2105 multi-loop panel and the FW2107 dual-hazard releasing panel.