Hi: I have a boubt about the water heating equipment to be commissioned. In a production plant there are two boilers (water heating and steam), and heat recovering (to heat water) from three sources: an air commpressor, a chiller (for water chilling), and one air handler. After the respective heat exchangers, the heated water by the heat recovering systems goes to a tank (122°F) and then it goes to the process and domestic uses; and the heated water and steam from boilers goes firectly to the process use (130°F).
So, in respect to heat recovering systems, what is the limit of the commissioning? I mean, in the heat recovering from the air compressor, do I we have to commission the heating water system AND all the compressor?? or just the water heating system?. And the same in the other two systems (chiller and air handler): do we have to commission all the equipment involved? or just the equipment for water heating??

Of course, the air handler will be commissioned as a HVAC system, too. But, what about the others?. I really thank you for your suggestions.