I have an account with A Chiller, 42F water, and a half dozen air handlers. 250ton system in all.
My issue, high supply air temperatures?
62-65F return 74-78F
chilled water 42 out, 50 in.
Several areas are warm, and im having trouble dialing them in.
My splits all look like that, anywhere from 10-15F splits. I pulled the strainers on the main AH's, they were dirty, problem still not solved.
pump 312gpm, 350gpm setpoint. I can up the gpm to 350, if thats the issue.
Typically what should your supply temperatures be on a chilled water coil with 42-45F water?
Yes, the fans are on drives, 1.7" static setpoint. Ones low at 1inch, ones right on in the troubled areas.
-Im considering a fire damper issue in adjacent zones, creating negative static in my warm zones, or partially shut supply damper, I verified airflow, return and supply in my warm zones, and yes the VAV's are wide open. The boilers off.
-Or is my supply air temp to warm?
-bypass valve issues, 3 way valve issues?
I have to get this fixed asap, or Im in quicksand.. Any help by someone familiar with chilled water systems would be appreciated.