At my request, Apollo enlisted the services of a air balancing company [Test Comm] to test and calibrate the air flows as well as the chilled water flows at the out buildings where the HVAC Controls Upgrade have been completed.  In order to have accurate readings on the new controls and to balance the systems we needed to have current flow rates.

During this testing it was discovered that the chilled water flows were greatly reduced as were the fan flows causing us great difficulty in maintaining a stable temperature at  the end stations. The chilled water flows were far below the chiller minimum water flow required for the chillers which is 84 GPM. 

We were restricted to 30 GPM. The chilled water pumps are rated at 105 GPM.
 
The reduced chilled water flow was mostly attributed to the reduction of the motor input from the VFDs which in the case of End Y was down to 30 Hz. I increased the running chiller pumps to 45 Hz and this allowed us to mostly control the temperatures in the VEAs.

If there is continued insistence on reducing the output of the motors of the chilled water pumps, perhaps we should consider resizing the pumps.