System
Select System to view and interact with the following parameters:
Table 22: System page items
Menu No. Parameter items PJP two pipe PJP four pipe
1 Array status √ √
2 Running mode √ √
3 Array cooling EWT √ √
4 Array cooling LWT √ √
5 Array heating EWT X √
6 Array heating LWT X √
7 Ambient temperature √ √
8 Array loading √ √
9 Available mode √ √
10 Total run hours √ √
11 Cooling ant freezing √ √
12 Defrosting √ √
13 Low noise √ √
14 Cooling pump status √ √
15 Heating ant freezing X √
System
16 Heating pump status X √
When logged in at Operator or Service levels, system setpoints and modes on the following table
can be viewed or set:
Table 23: System setpoints viewable in operator and service level
Array Start/Shutdown Array LWT offset Clear running time
Mode Setting EWT pulldown rate EXV cooling Initial steps
Cooling EWT setpoint Heater on Water temperature
differential
EXV heating Initial steps
Heating EWT setpoint Heater off Water temperature
differential
EXV cooling minimum steps
Cooling LWT setpoint Heater on Ambient
temperature
EXV heating minimum steps
Heating LWT setpoint Low LWT alarm Defrost Initial steps
Noise reduction mode High LWT alarm Cooling target suction
superheat
Default setting Defrost temperature (Ambient
temperature 0 )
Heating target suction
superheat
Cooling Control Select Defrost temperature (Ambient
temperature ≥0 )
Pump periodic run
Heating Control Select Defrost time limit Water valve opening time
Temperature control cycle Defrost interval Manual defrost unit
Water temperature control
differential
Coil temperature after defrost Limited hours
YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump104
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