We tried to tell them not to do it.
Trane RTAA chiller has intermittent Low Differential lockout during cold weather (below 20F or so). Ambient finally got cold enough today (11F) that I never got the chiller to run long enough to create 40 PSID. All the chiller was trying to do was chill the building loop (apx 350 gallons) from 70F to 42F, there was no other load. In their wisdom, the engineers insisted on using the building chiller for some process chilling, even though the building load is about 60 Tons and the process load will never be more than 10 Tons. Result in cold weather when no process is going on is that the chiller only comes on once every hour or longer just long enough to cool the loop and the condenser gets stone cold in the interim. After today's experience I am going to suggest a fluid cooler for the process.
Thoughts? Similar experiences?