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Got this from maintenance guy, which is a piping diagram of process chilled water flow. They make MISO & KOJI RICE. Process chilled water comes in when KOJI turn on and send signal to contactor to energize process pump to maintain (35%RH or 35F inside KOJI ROOM) inside cold water tank full which then a second pump comes on from control panel that allow chilled water to come in from valve 18. A control panel turns on KOJI ROOM operation. Process pump comes on when KOJI is calling for temperature control. Chilled water comes into a spray nozzle inside air-handler unit which is like a humidifier.
COULD THE CITY WATER RUNNING AND AFFECT LARGE STORAGE TANK INTO OVERFLOWING BECAUSE TOO MUCH WATER IS COMING BACK INSIDE TANK.