Our building is replacing an old Mcquay 800ton chiller with a trane 600 to accompany our two other trane cvhf570's and our trane 175ton. The big dog at corporate wants to put vfd drives on the new chiller. Our four trane cvhf pumps don't have vfd's. Will putting vfd's just on the new chiller cause surges in our other chillers that run balls to the wall?