Edwards (SIGA-REL) Agent releasing module – intelligent, 2-circuit

The Edwards SIGA-REL is an intelligent addressable Releasing Module for Signature Series fire alarm systems. It controls deluge sprinkler, preaction sprinkler, and automatic fire-extinguishing systems. As a result, the SIGA-REL releases water, foam, CO2, Halon, clean agent, or other suppression agents on command.

Edwards SIGA-REL — what it controls

First, the SIGA-REL provides two supervised release circuits for solenoid-controlled release valves. In addition, it provides two supervised prerelease circuits — one for audible appliances, one for visual appliances. Furthermore, the module includes one supervised manual release input, one supervised abort input, and one zone relay output (Form C contact). The two release circuits operate in unison and cannot be controlled separately.

Compatible panels

EST2, EST3, and QuickStart fire alarm control panels. The SIGA-REL must be installed in an enclosure dedicated to the releasing system — no other devices may be in the enclosure. Approved enclosures: 2-WB series, 3-RCC series, 3-CAB series, MFC-A, RACCR series. In addition, maintain 1 in (25.4 mm) minimum clearance around the SIGA-REL per NFPA 70 NEC.

Power and electrical

Power riser input voltage: 18.4 to 27.4 VDC, power-limited. Supervisory current: 25 mA max. Alarm current: 190 mA min, 4 A max (depends on output loading). Furthermore, release circuits TB4-1/2 and TB4-3/4 are rated 2 A at 24 VDC max with 47K end-of-line resistor. Prerelease circuits TB5-1/2 and TB5-3/4 are rated 2 A at 24 VDC max with 47K EOL. Each release circuit supports a maximum of 4 release valves.

Required accessories

RELA-EOL solenoid control relays are REQUIRED to buffer the SIGA-REL from valve solenoid spikes. For manual release: 276A-REL Manual Release Station or 278A-REL Double Action Manual Release Station (FM approved). For abort: RELA-ABT Manual Abort Station (FM approved). In addition, for service disconnect: RELA-SRV-1 Service Disconnect Switch (FM approved, normally closed, minimum 2.0 A).

Compatible power supplies

2-PPS / 2-PPS/220, 2-PPS/6A / 2-PPS/6A-220, 3-BPS/M / 3-BPS/M-230, 3-PPS/M / 3-PPS/M-230. Also BPS6A / BPS6A/230 and BPS10A / BPS10A/230 — however, these BPS supplies are NOT compatible with FM sprinkler applications that require 90 hours of standby. The SIGA-REL is NOT compatible with the QuickStart PS6 Power Supply Card.

NFPA standards by suppression agent

NFPA 11 (low-expansion foam), NFPA 11A (medium- and high-expansion foam), NFPA 12 (CO2), NFPA 12A (Halon 1301), NFPA 13 (sprinklers), NFPA 15 (water spray), NFPA 16 (foam-water), NFPA 17 (dry chemicals), NFPA 2001 (clean agent). For NFPA 12A and NFPA 2001 agents, a separate mechanical manual release is required in addition to the SIGA-REL release station. Furthermore, the SIGA-REL is NOT designed to generate an NFPA 72 evacuation signal and does NOT meet UL 864 evacuation NAC requirements.

For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com