The controls for enabling/disabling chiller are as follows:
The chiller is enabled when
TChi_CHWST
> TChiSet + TDeaBan
The chiller is disabled when
TChi_CHWST ≤
TChiSet
where TChi_CHWST is chiller chilled water supply
temperature, TChiSet is set temperature for
chilled water leaving chiller, and TDeaBan is
dead band to prevent short cycling.