VESDA by Xtralis
VESDA Sensepoint XCL – Large Bore Installation Manual
35563_01
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3
Commissioning
Note:
The VESDA Sensepoint XCL gas detector is supplied from the factory pre-calibrated. However, it
is strongly recommended that the detector response is checked and if necessary, re-calibrated
before placing it into service. Refer to section "4.3 Calibration" for details on the correct calibration
procedure.
3.1
Commissioning the Detector
The following procedure should be followed carefully and only be performed by suitably-trained personnel.
1. Remove the detector module.
2. Configure the sink/source mode of the detector. Refer to "Current Source/Sink Selection" on details of
how to do this.
3. Configure the required inhibit level of the detector. Refer to section "Inhibit Level Selection" on details of
how to do.
4. Check that all electrical connections are terminated correctly according to the connector terminal
assignments.
5. Switch on the power supply to the VESDA Sensepoint XCL.
a. For DC operation, use a voltmeter set to measure DC voltage at the detector. Check that the power
supply voltage between terminals 1 (+V) and 2 (0 V) is between 9 V DC and 32 V DC for Modbus
versions and 11 V DC and 32 V DC for analog versions.
b. For AC operation, use a voltmeter set to measure AC voltage to check that the power supply voltage
between terminals 1 and 2 is between 20 V AC and 27 V AC.
