In 2022, Edwards Fire Safety announced that it would discontinue support for the Edwards EST3 Fire Alarm Control Unit (FACU) due to challenges in sourcing electronic components. As of December 31, 2023, Edwards has stopped accepting new orders for UL/ULC-listed EST3 systems. While they intend to support existing installations with replacement parts as long as possible, the dwindling supply and eventual end of support are becoming increasingly evident.
The EST4, launched in 2019, offers backward compatibility with many Edwards Signature Series components, wiring, and control unit back boxes. For many facilities, the shift from an existing EST3 system to the newer EST4 system could seem straightforward; however, the transition comes with challenges that necessitate significant pre-planning to minimize impairments, particularly in occupied buildings.
Challenges in Transitioning from EST3 to EST4:
1. Component Compatibility: Many buildings with existing EST3 systems still include some legacy System Sensor devices and modules; the EST3 can interface with these legacy components via the 3-AADC1 loop card. The EST4 system does not support or provide an alternative to this loop card and, therefore, does not support such devices, which can complicate the upgrade process.
2. Network Integration: The EST4 and EST3 systems cannot share network communications directly, making multi-node system upgrades complex and necessitating a carefully managed transition plan to avoid extended operational downtime.
Strategic Approach for a Smooth Transition:
A comprehensive, building-specific migration plan ensures a seamless transition from EST3 to EST4, especially in active buildings. Here’s a structured approach:
1. Prioritize Upgrades: Start by identifying and prioritizing the critical steps in the migration process. Address high-priority tasks first to ensure essential functions are upgraded promptly.
2. Phased Installation: It is considered a phased migration in facilities where continuous operation is essential, such as hospitals or systems with multiple nodes. It is best to install the EST4 system alongside the existing EST3 system, allowing for a gradual transition. This phased approach enables circuit-by-circuit migration, reducing the impact on day-to-day operations.
3. Minimize Downtime: Design the upgrade process to allow EST3 and EST4 systems to operate concurrently at the various stages of migration. This approach maximizes flexibility and minimizes operational disruption during the transition.
Why Partner with Us?
Our team has extensive experience managing such upgrades, having successfully completed similar projects across the greater Boston area. We specialize in designing customized solutions to ensure that transitions are as smooth and efficient as possible.
Whether you’re planning a new project or need assistance with an ongoing upgrade, we’re here to help navigate the complexities of the EST3 to EST4 migration with expertise and precision.