[TRNSYS-users] type 668

[gabriela vlad]

Dear users,
 I'm trying to perform a simulation with type 668 (water to water heat pump). I know that this type is based on user supply data files (one for heating and one for cooling). I want to modify these files and to introduce the values specific to my unit but I receive the next message:''This project was created with a newer version of IISIBAT and could not be opened with yours. Contact you IISIBAT distributor to get the latest version''.  
What should I do in this case?
 
Thank you in advance!
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