add a chiller control page in powerboard testing GUI
Add a chiller control page in powerboard testing GUI, see slides here: https://indico.physics.lbl.gov/event/1961/contributions/6531/attachments/3288/4317/Zhicai_20220315.pdf
Add a chiller control page in powerboard testing GUI, see slides here: https://indico.physics.lbl.gov/event/1961/contributions/6531/attachments/3288/4317/Zhicai_20220315.pdf