Aspiration smoke detector LSN improved Technical specifications | en 7
Bosch Sicherheitssysteme GmbH Operation guide 2020.04 | 6.1 | F.01U.029.275
This operation guide is intended exclusively for installation engineers and their employees.
Reprinting this operation guide or extracts thereof is permitted for internal purposes only.
2.4 Disposal
Unusable electrical and electronic devices or modules must not be disposed of with normal
household refuse. They must be disposed of in compliance with the applicable regulations
and directives (e.g. WEEE in Europe).
3 Technical specifications
3.1 Product description
Aspirating Smoke Detectors from the FAS-420 series are active fire detection devices that are
connected directly to the Local SecurityNetwork (LSN) improved version for early fire
detection. They are used for space and equipment protection as well as for monitoring air
conditioning units or ducts (provided that the FAS-420 is installed outside of these units or
ducts). You can also pinpoint the exact location of the fire using the innovative fire source
identification operation.
FAS-420 Aspiration smoke detector series were developed specifically for connection to Bosch
fire panels with LSN improved version technology and therefore offer the following extended
features:
– Flexible network structures, including T-tapping with no additional elements
– Up to 254 LSN-improved elements per loop or stub line
– Unshielded cable can be used.
The FAS-420 series also offers all the established benefits of LSN technology. The operating
data and fault messages can be read off the fire panel's operating and display unit.
Variants
The FAS-420-TP1, FAS-420-TP2, FAS‑420‑TP1‑SL and FAS‑420‑TP2‑SL variants feature LED
displays indicating operating mode, faults and alarms (the FAS‑420‑TP2 and FAS‑420‑TP2‑SL
have two alarm displays). The FAS‑420‑TT1, FAS‑420‑TT2, FAS‑420‑TT1‑SL and FAS‑420‑TT2‑SL
offer differentiated alarm displays (info, internal and main alarm) as well as a 10-segment
smoke level display (on the FAS‑420‑TT2 and FAS‑420‑TT2‑SL, all alarm and smoke level
displays are doubled).
The FAS‑420‑TP1, FAS‑420‑TP1‑SL, FAS‑420‑TT1 and FAS‑420‑TT1‑SL variants are each fitted
with a detector module.
The FAS‑420‑TP2, FAS‑420‑TP2‑SL, FAS‑420‑TT2 and FAS‑420‑TT2‑SL variants each have two
integrated detector modules. Two aspiration pipes can be connected, enabling two areas to
be monitored. This effectively doubles the monitoring area.
Dual-detector dependency
The use of two detector modules in variants FAS-420-TP2 and FAS-420-TT2 also enables a
dual-detector dependency to be realized. This means that one area can be monitored by two
pipe systems.
Two alarm stages
Alternatively, the FAS-420-TP2 and FAS-420-TT2 can have two alarm stages configured. A pipe
system is connected via a pipe adapter on two detector modules. Selecting different response
sensitivities for the detector modules enables the time-staggered triggering of two main
alarms.
Dual-zone dependency
To Next Page
Loading...
