SIGA-OSHD-FCN is an Edwards Signature Optica Series intelligent multisensor smoke and heat detector, published by Edwards on its own data sheet (E85001-2003). It pairs a multi-criteria optical smoke sensor with a rate-of-rise heat sensor that has a fixed temperature setting, and uses dual optical wavelengths and multiple detection angles to reject cooking nuisance particles. It is a plug-in head for Signature Series bases and works only with control panels that use a Signature Loop Controller.
Specifications
| Operating voltage |
15.20 to 19.95 VDC |
| Normal operating current |
32 µA |
| Alarm current |
45 µA |
| Smoke sensitivity range |
UL/ULC: 0.5 to 4.36 %/ft. (1.6 to 13.6 %/m) obscuration |
| Rate-of-rise rating |
15 °F/min (8 °C/min) |
| Fixed temperature rating |
135 °F (57.2 °C); actual alarm point 129 to 141 °F (53.9 to 60.6 °C) |
| Air velocity |
0 to 4,000 ft./min (0 to 20.32 m/s) |
| Wall mounting |
12 in. (305 mm) max. from ceiling |
| Heat detector spacing |
Max. 50 ft. (15.2 m) centers |
| Operating environment |
32 to 100 °F (0 to 38 °C), 0 to 93% RH, noncondensing |
| Storage temperature |
-4 to 140 °F (-20 to 60 °C) |
| Construction |
High impact engineering polymer, white |
| Agency listings |
CAN/ULC-S529, CAN/ULC-S530, UL 268 (7th edition), UL 268A, UL 521, CSFM |
| Shipping weight |
0.4 lb (0.16 kg) |
Compatibility and installation notes
- Compatible only with control panels using a Signature Loop Controller.
- Base ordered separately. Bases listed: SIGA-SB, SIGA-SB4, SIGA-RB, SIGA-RB4, SIGA-IB, SIGA-IB4, and the SIGA-AB4GT and SIGA-AB4G-LF audible bases.
- Accessories listed: SIGA-LED remote alarm LED (not for EN54 applications), SIGA-TS4 trim skirt, SIGA-DMP mounting plate, SIGA-RTA removal tool, SIGA-VA cleaning tool.
- Signature detectors mount to North American 1-gang boxes, 3-1/2 or 4 inch octagon boxes, and 4 inch square boxes 1-1/2 in. (38 mm) deep.
Related models
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SIGA-OSHD and SIGA-OSHDB (black): covered by Edwards data sheet E85001-1003, which also lists FM approval.
Documents
Specifications from Edwards data sheet E85001-2003, Intelligent Multisensor Smoke and Heat Detector SIGA-OSHD-FCN, Issue 1 (09-27-22). Manufacturer specifications are subject to change.
