Dear sir,
Please find my comment below.
Chiller plant..
1. Your flow seem mention on 2 chiller, at the moment we have 1 chiller with 2 compressor drive, and compressor shall have run hour meter to select and control the accumulate run hour both operate life close together.
2. Primary chiller pump have run hour meter to control operate life of pump same as chiller, and we run 1 primary pump with fix flow rate is enough for chiller, another one pump used as stand by.
3. Secondary pump have run hour meter to control operate life of pump same as primary pump, and we run 1 secondary pump with variable flow rate due to flow rate vary depend on cooling coil open with motorized 2 way valve, another one pump used as stand by.
4. I’ve attached flow chart of chiller plant for your do as guide line, please find.
Hot water loop process.
I don’t find the flow chart of your submission, I’ve write down hot water process flow chart to guide your work, please continue.
AHU production area.
Production area seem a bit confuse of exhaust fan and some work condition, please come to discussed, if follow my guideline your flow chart must be revised.
AHU assembly & water fill.
Your proposed concept same as production area , but the condition of the room and process seem difference and a bit complicated, please come to discuss in details.