Xtralis VESDA VLS Product Manual

Also see for VESDA VLS: Manual Installation instructions Installation sheet Product guide

Xtralis VESDA VLS Product Manual Manual pdf 38 page image

Xtralis VESDA VLS Product Guide Xtralis VESDA®32 www.xtralis.com8 Power SourceThere are two sets of power terminals on the termination card. Use one of the power terminals onthe termination card to connect to a 24 VDC power supply and if necessary loop out to anotherdevice via the second set. The detector has reverse polarity protection to minimize the risk ofreverse power connection to the detector.Note: Regional differences in power supply may impact on power connection. Pleasecontact your Regional Xtralis technical support for more information.Note: Operating the detector when DC supply voltage is outside the voltage range of 18VDC and 30 VDC may cause damage to the device.Note: The VLS detector will not operate when the supply is reversed.Figure 22 - Wire connection details for power terminals on relays terminationcard9 Back Up Battery PowerThe power supply for the VLS is switched to a back up battery in the event of a mains powersupply disruption. The size of the back up battery is determined by local standards and codes,the total power required by the system, back up time required, allowance for reduction incapacity with age and expected temperature variations.Note: It is recommended that batteries be inspected and changed as per manufacturer’sspecifications or as per your local codes and standards.