1 How to Read this Design GuideVLT® HVAC DriveFC 102 SeriesThis guide can be used with allVLT® HVAC Drive frequencyconverters with software version3.9x.The actual software versionnumber can be read from15-43 Software Version.Table 1.1 Software VersionThis publication contains information proprietary toDanfoss. By accepting and using this manual the useragrees that the information contained herein is used solelyfor operating equipment from Danfoss or equipment fromother vendors if such equipment is intended for communi-cation with Danfoss equipment over a serialcommunication link. This publication is protected underthe Copyright laws of Denmark and most other countries.Danfoss does not warrant that a software programproduced according to the guidelines provided in thismanual functions properly in every physical, hardware orsoftware environment.Although Danfoss has tested and reviewed the documen-tation within this manual, Danfoss makes no warranty orrepresentation, neither expressed nor implied, with respectto this documentation, including its quality, performance,or fitness for a particular purpose.In no event shall Danfoss be liable for direct, indirect,special, incidental, or consequential damages arising out ofthe use, or the inability to use information contained inthis manual, even if advised of the possibility of suchdamages. In particular, Danfoss is not responsible for anycosts, including but not limited to those incurred as aresult of lost profits or revenue, loss or damage ofequipment, loss of computer programs, loss of data, thecosts to substitute these, or any claims by third parties.Danfoss reserves the right to revise this publication at anytime and to make changes to its contents without priornotice or any obligation to notify former or present usersof such revisions or changes.• Design Guide entails all technical informationabout the frequency converter and customerdesign and applications.• Programming Guide provides information on howto programme and includes complete parameterdescriptions.• Application Note, Temperature Derating Guide• MCT 10 Set-up Software Operating Instructionsenables the user to configure the frequencyconverter from a Windows™ based PCenvironment.• Danfoss VLT® Energy Box software atwww.danfoss.com/BusinessAreas/DrivesSolutionsthen choose PC Software Download• VLT® HVAC Drive BACnet, Operating Instructions• VLT® HVAC Drive Metasys, Operating Instructions• VLT® HVAC Drive FLN, Operating InstructionsDanfoss technical literature is available in print from localDanfoss Sales Offices or online at:www.danfoss.com/BusinessAreas/DrivesSolutions/Documen-tations/Technical+Documentation.htmTable 1.2The frequency converter complies with UL508C thermalmemory retention requirements. For more information,refer to chapter 6.4.2 Motor Thermal Protection.How to Read this Design Gui... Design Guide6 Danfoss A/S © Rev. 06/2014 All rights reserved. MG11BC0211