Chiller Command

The chiller command output “ChillerCmd” will be on if “MaxClgVlvPos” or Therminal Load“ is >9% and the pre-control valve position output”CoolValveControl” is > 80% and min off time CH-02 is over.

The output “ChillerCmd” will be off if the output “CoolValveContol” is less than 10% and min runtime CH-01 is over or the“MaxClgVlvPos” and Therminal Load“ is >2% and min runtime CH-01 is over.

The cooling control will not transmit a cooling demand “ChillerCmd” to the chiller if the outside air temperature is below the low limit cooling set in the macro “SWM_SummerWinterMode” (HVAC_Mode<3), or the room controller cooling valves are closed.

Table 9.   Parameter List

Description

Value Range

Default Value

Unit

CH-01: min runtime chiller

0 ... 3600

300

sec

CH-02: min off time chiller

0 ... 3600

300

sec