George,
What did the specs call for? Was the chiller equipment to be supplied with disconnects by the manufacturer or was the contractor required to provide the disconnects?
By the way, even if the breaker in the next room was lockable, it would not meet the code requirements. 430.102(A) requires a disconnect within sight of the controller. There are no exceptions to 410.102(A) like there are for 102(B).
Don
