Edwards SIGA-REL Technical

Chapter 1: Product design
SIGA-REL Technical Reference Manual 3
Introducing the SIGA-REL
Description
The SIGA-REL Releasing Module (Figure 1) is a Signature Series component
consisting of:
• Two supervised release circuits
• Two supervised prerelease circuits
• One supervised manual release input circuit
• One zone relay output (Form C contact)
• One supervised abort circuit for a normally-open abort switch
Figure 1: SIGA-REL Releasing Module
The SIGA-REL controls operations for deluge, preaction, and automatic fire
extinguishing systems. The release circuits control the release of gas and other
fire suppression agents by controlling the release solenoids. The release circuits
operate in unison and cannot be controlled separately.
Prerelease circuit 1 supports audible notification appliances that sound alert,
prerelease, and release signals. Prerelease circuit 2 supports visual notification
appliances.