Parameter ignored in EF 5.0 TimeOut Connection

My application is experiencing a TimeOut error when executing operations that require more processing time.

I am using EntityFramework 5.0 and set Connection Timeout=480 to test, but it seems to me that it is ignoring the parameter that defines the connection timeout.

Below is my connection string:

<connectionStrings>
    <add name="TesteContext" 
         connectionString="metadata=res://*/Models.TesteModel.csdl|res://*/Models.TesteModel.ssdl|res://*/Models.TesteModel.msl;
         provider=System.Data.SqlClient;
         provider connection string=&quot;
         data source=192.0.15.1;
         initial catalog=DBTeste_PRD;
         persist security info=True;
         user id=xyz;
         password=XXXXXX;
         Connection Timeout=480;
         MultipleActiveResultSets=True;
         App=EntityFramework&quot;" 
         providerName="System.Data.EntityClient" />
  </connectionStrings>