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www.DaikinApplied.com 43 IOM 1266-2 • MAGNITUDE
®
MODEL WME CHILLERS
Figure 58: Settings View - Alarms
Table 19: ALARMS Setpoint Settings
Description Default Range PW Comments
Condenser Freeze Protect 34.0°F 34.0 to 38.0°F T
Sets the value of condenser saturated temperature below which the condenser pump is forced
ON - occurs when unit is off and chiller senses need to provide ow to address a chiller limit
alarm - see "Table 23: Critical Alarms" on page 48.
Evaporator Freeze Protect 34.0°F 34.0 to 38.0°F T
Sets the value of evaporator saturated temperature below which the evaporator pump is forced
ON - occurs when unit is off and chiller senses need to provide ow to address a chiller limit
alarm - see "Table 23: Critical Alarms" on page 48.
Low Evaporator Pressure 29 psi 28 to 45 psi T
Sets the evaporator pressure value below which the compressor is shut down - may need to
be lowered if glycol is added to the system. If Glycol Enabled is selected, minimum may be set
as low as 20 psi.
High Condenser Pressure 140 psi 130 to 175 psi T Sets the condenser pressure limit
Evaporator Trip Time 1 sec 0 to 5 sec T
CAUTION
Changing setpoint below 28 psi minimum requires glycol to be added to the system otherwise there is a risk of freezing the evaporator.
Figure 59: Settings View - Commission
Table 21: Commission Setpoint Settings
Description Default Range PW Comments
Impeller Type Factory set 092X, 092Y, 106X, 106Y T Size of compressor and impeller type - see Compressor Usage, Table 6
IGV Maximum Position 100% 90-110% T 100% indicates vanes are straight
NOTE: If both compressors have the same sequence number, they will automatically balance starts and run-hours. User cannot manually
stage compressors as this is an internal process.
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