The Ice Build Time Sche dule defines the perio d during which ice b uild is active if the ice b uild
option is ENABLED. If t he Ice Build Time Schedul e overlaps other schedu les defining time, the n
the Ice Build Time Schedu le shall take priority. During the ice build perio d, the WATER/BRINE
CONTROL POINT is set to the ICE BUI LD SETPOINT for temperatur e cont rol. The ICE BUILD
RECYCLE OPTION and ICE BUILD TERMINATION entries from a screen in the Config
(configuration) table provide options for machine recycle and termination of ice build cycle,
respectively. Termi nation of ice build can result fro m the ENT ERING CHILLED WATER/BRI NE
temperature being le s s tha n the ICE BUILD SETPOINT , op ening of the REMOTE CONTA CT
inputs from an ice level ind icator, or reaching the end of the Ice Build Time Sch edu le.
Ice Build Initiation
The Ice Build T ime Schedule pr ovides the mea ns for activating ice build. The ice build t ime
table is named OCCPC02S.
If the Ice Build Time Schedule is OCCUPIED and the ICE BUILD OPTION is EN ABLED, then
ice build is a ctive and the f ollowing event s automatically take place (u nless overridden by a
higher authority CCN device):
1. Force CHILLER START/STOP to START.
2. Force WATER/BRINE CONTROL POINT to the ICE BUILD SETPOINT.
3. Remove any force (Auto) on the ACTIVE DEMAND LIMIT.
Note: Items 1-3 (shown abo ve) shall not occur i f the chiller is conf igured and operat ing as a lag