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Daikin Magnitude Installation, Operation And Maintenance Manual page 39

Magnetic bearing centrifugal chillers 125 to 400 tons (440 to 1400 kw) hfc-134a refrigerant 50/60 hz

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ALARMS Setpoints
Figure 32: ALARMS Setpoint Screen
Table 11: ALARMS Setpoint Settings
Description
Default
Condenser Freeze Protect
34.0 °F
Evaporator Freeze Protect
34.0 °F
Motor Current Threshold
Surge Slope Limit
20 °F/min
Surge Temperature Limit
High Discharge Temp-Stop
High Discharge Temp-Load
High Discharge Pressure
140 psi
Low Suction Pressure, Stop
Low Suction Pressure-
Unload
Low Suction Pressure-
Inhibit
Lenient Flow Sensing
NOTE: The setpoints listed in
representative for more information.
www.DaikinApplied.com
Range
Password
-9.0 to 45.0 °F
-9.0 to 45.0 °F
10%
1 to 20%
1 to 99 deg F/min
12 °F
2 to 45 °F
190 °F
120 to 240 °F
170 °F
120 to 240 °F
120 to 240 psi
25 psi
5 to 45 psi
29 psi
6 to 45 psi
30 psi
7 to 45 psi
On
Off/On
Table 11
should only be changed by a Daikin Applied technician. Contact a Daikin Applied service
T
Minimum condenser saturated temperature to start pump
T
Minimum evaporator saturated temperature to start pump
T
Min %RLA to consider that the is motor off
Surge temperature (ST) slope value above which alarm occurs. Active only if
T
T
At start, Surge Temp (ST) is compared to this SP. Alarm at ST>2x SP.
T
Max discharge temp to shut down compressor
T
Sets discharge temp above which a forced capacity increase occurs
T
Max discharge pressure, stop compressor
T
Min suction pressure – stop compressor
T
Min suction pressure – unload compressor
T
Min suction pressure – inhibit loading
T
On- reduction in unit trips by detecting a loss of flow signal (>5 Sec)
37
IOM 1210-7 • MAGNITUDE
Comments
ST>SP7 at start
MODEL WMC CHILLERS
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