Hello , I can help , if there is only 1 water inlet hookup it will be cold and some new machines heat the water on there own , if there are 2 water inlets it would be best to connect hot and cold to unit , if you do not have a hot water line available it should still be ok to put a Y adapter on your cold water line to both connections on your unit. Let me know how it goes. Phil
Look at the rear of the m/c at the right side top, and see how many water connections there are, if there is only the one, then it is a cold fill m/c only.
If there are two inlets, then it is Hot and Cold fill, they will be marked H & C respectively.
Plz rate my solution.
Thanks.