LG MultiSITE MS8000 Series - Page 50

50
MultiSITE MS8000 Series Room Controllers
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Conguration Parameters Default Value Signicance and Adjustments
Cool Stages (Number of Cooling Stages)
Default Value: 2 stages
Sets number of Cooling Stages.
1 Stage: Only Y1 (BO3) terminal is used. Y2 is disabled.
2 Stages: Both Y1 (BO3) and Y2 (BO2) terminals are used in sequence.
Choices: 1 or 2 stages
Econo. Config (Economizer Configuration)
Default Value: Off
Enables or disables the economizer functionality.
On: Economizer activated
Off: Economizer deactivated
Choices: On or Off
Changeover SP (Changeover Setpoint)
Default Value: 55°F (13°C)
In Cooling mode, the outside air temperature value at which the cooling gets switched over
from mechanical (compressor) to free cooling (economizer).
Range: 14°F to 70°F (-10°C to 21°C)
Mech. Cooling (Mechanical Cooling
Allowed)
Default Value: Off
Allows operation of mechanical cooling if free cooling (economizer) cannot maintain the
cooling setpoint.
Off: Applies when the mixed air temperature sensor is installed after the mechanical cooling
refrigeration coils. In this case, mechanical cooling never operates at the same time as free
cooling.
On: Applies when the mixed air temperature sensor is installed before the mechanical
cooling refrigeration coils in the mixing plenum. In this case, mechanical cooling is allowed
when the free cooling (economizer operation) cannot maintain the cooling setpoint.
Range: Off or On
Table 33: MS8650 Conguration 5 / 11 Parameter Details, continued.
CONFIGURATION SCREENS
MS8650 Conguration 5 / 11
For MS8650 Only