Edwards Signaling ReadySet - Manual (Page 36)

Chapter 3: Installation and configuration
28 ReadySET Aspirating Smoke Detection System Installers Handbook
Flow limit offset
Flow limit offset sets the sensitivity of the airflow monitoring system. A small offset
makes the system very sensitive to air flow changes. This detector must react to ±20%
changes in airflow, which equates to a change in flow sensor reading of +5. Areas with
fluctuating air pressures may require a less sensitive setting.
Note:
Changing the flow limit offset starts a new flow calibration set up.
Flow delay
Sets the time for which a flow fault must continue before a fault is signaled.
Input select
The detector input terminal may be used to either monitor an associated power supply
for faults, or for ClassiFire override (reduces normal sensitivity by 50%).
Note:
In the factory default condition, the switch is set to OFF (power supply
monitoring). This gives a fault condition if there is an open circuit on the INPUT
terminals. Fit a wire link if you do not require power supply monitoring. If you fit a wire
link across the INPUT terminals, you must set this switch OFF, or else the detector
sensitivity is dramatically and permanently reduced by the ClassiFire override function.
Auto calibration
Auto calibration automatically starts a new FastLearn cycle when the detector is
powered up. This may be disabled if the previous settings need to be retained.
Final installation
Once the power and signal connections are made, place the detector cover onto the
unit and secure the cover to the unit using the cover mounting screw.
Note:
The detector is designed solely for operation with the front cover securely fitted
using the cover mounting screw.
Removing the detector
Removing the detector is the reverse of the installation process, disconnecting the
pipework and wiring connections installed in the unit.