ESPRIT Gas Extinguishing User Manual
INSTALLATION
22
Approved Document Ref: UI-ESG-01 Issue 2.0
Intrinsic Safe Connections
The Zone Circuit can be configured for use with Intrinsic Safety detectors and barriers: please see the
programming section.
The recommended isolation barrier is an MTL Model: 5561 Only use intrinsic safe detectors and call
points.
The number of devices permitted, and cables will depend on the IS classification
–
refer to the detector
manufacturers’ information for further appr
opriate IS zone classification.
Sounders / Monitored Output Circuits
Four conventional 24VDC programmable and monitored sounder style output circuits are provided for
single flood zone, and six conventional 24VDC programmable and monitored sounder style output
circuits are provided for dual flood zone.
6K8 End of Line Resistor
The sounder outputs can be configured to turn on continuously or to pulse (1s ON / 1s OFF).
The sounder outputs are monitored for open and short circuit conditions using reverse polarity signals.
The outputs can be configured to be non-silencing or silencing. Sounders must be equipped with an
in-built blocking diode that prevents the sounder from taking power when the output is in the supervising
condition.
An End-of-Li
ne Resistor of value 6k8Ω ½ Watt must be fitted to the last sounder / bell.
IS Detector
IS Detector
IS Call Point
SAFE AREA
HAZARDOUS AREA
11 + 1
12 - 2
Isolation
Barrier
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www.acornfiresecurity.com
