... 1500W,2000W,2500W,3000W3,Installation and usage of diesel engie preheater(1), Pipes connectionPlease follow to the Installation indicate chart( ... low water firmly, and make sure there is no air inside and full fill with water.4, Company image4 ... engine and genset control system, e.g. engine controller, water preheater, automatic voltage regulator, generator synchronizer, genset controller, power factor ...