This is driving me really nuts. I am new here.
This system has 2 regular water cooled chillers + 1 air cooled chiller, boilers for DHW and hot water loop.
I substituted the air cooled chiller for a heat recovery chiller. The heat recovery will feed the DHW system.
Somehow I am missing some link...the gas use did not change after I added the heat recovery chiller, which means, the DHW system is not seeing the heat recovery coming from the chiller.
What am I doing wrong?

Any help is very appreciated.

Claudia de Paula