VESDA by Xtralis VESDA VLC Installation Guidewww.xtralis.com 238 Preliminary System ChecksPerform the following preliminary system checks before commissioning.a. Logging onto the system with a PC or a LCD Programmer. Refer to Section 8.1.b. Normalise the airflow. Refer to Section 8.2.c. VESDAnet communication checks for VN models only. Refer to Section 8.3.d. Basic pass/fail smoke test. Refer to Section 8.4.8.1 Logging On to the SystemCheck with your distributor for the User level and PIN number to log on to the system.8.1.1 Logging on with a PCTo program the VLC (RO) detector with a PCa. Connect the RS232 data cable from the PC output port to the 9 pin programming socket on thetermination card in the detector.b. Run Xtralis VSC from the PC.c. Enter your User level and PIN number.To program the VLC (VN) detector with a PCa. A PC-LINK HLI device must be connected between the PC and the 15-pin VESDAnet socket to programthe VN model detector.b. Connect the RS232 data cable from the PC output port to the 9-pin socket on the PC-Link HLI device.c. Connect the 15-pin output port of the PC-LINK HLI device to the 15-pin VESDAnet socket on thetermination card in the detector or to any remote VESDAnet sockets if wired to the detector.d. Run Xtralis VSC from the PC.e. Enter your User level and PIN number.8.1.2 Logging on with a LCD Programmer (For VN Model Only)Connect the programmer lead to either one of the following sockets:l To the 15-pin, programming socket on the termination card; orl To a remote VESDAnet socket within the VESDAnet loopWait for the programmer to power up. Log in your User level and PIN number into the programmer.8.2 Normalize the Air Flow and Clearing Air Flow Faultsa. List all the VESDAnet numbers for all detectors to be normalized.b. Refer to Section 8.2.1 for LCD programming or Section 8.2.2 for PC programming.c. It takes approximately 11 minutes for the system to normalize during which time the Green OK LEDflashes twice every second to indicate that normalization is in progress.d. Check the airflow level is approximately 100% when normalization is completed.e. Press the Reset/Isolate button on the front cover to reset the detector after Normalization. All the faultlights should go off. If any of the fault lights are lit consult the Status menu on the programmer or theActive Event List on Xtralis VSC to determine the faults and consult your System Design Manual torectify.f. If the unit fails to normalize it is because the measured airflow may be too low. Check for blockages inthe sampling air pipe and check that the exhaust plug has been removed.8.2.1 Using a LCD Programmer (For VN Model only)a. Refer to the LCD menu tree supplied with each VESDA VLC (VN) detector.b. Select the detector to be normalized from the displayed list of devices.c. Select Setup by Zone/Type menu ↵ Normalize ↵ Start ↵ (↵ = Enter Key).d. To check the airflow level, go to the Normalize or Status menu after normalizing.