temperature being less than the ICE BUILD SETPOINT, opening of the REMOTE CONTACT
inputs from an ice level indicator, or reaching the end of the Ice Build Time Schedule.
Ice Build Initiation
The Ice Build Time Schedule provides the means for activating ice build. The ice build time
table is named OCCPC02S.
If the Ice Build Time Schedule is OCCUPIED and the ICE BUILD OPTION is ENABLED, then
ice build is active and the following events automatically take place (unless 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 above) shall not occur if the chiller is configured and operating as a lag
or standby chiller for lead/lag and is actively controlled by a lead chiller. The lead chiller
communicates the ICE BUILD SETPOINT, desired CHILLER START/STOP state, and
ACTIVE DEMAND LIMIT to the lag or standby chiller as required for ice build, if config-
ured to do so.
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