No, the engine life will not be compromised. In normal cruising life you need to run your engines 1-2 hours per day just to (inefficiently) charge your 12V house bank for refrigeration, lights etc etc.  It is not healthy to run a diesel engine without load once it is warm, at idle speed.  It will shine the bore after an extended period of time. 

Integrel provides a light load that is gradually increased with RPM ONLY after the Intelligent Controller is aware determines the engine is warm.