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12.1.3 Cooling Operation
12.1.3.1 Thermostat control
Compressor is OFF when Water Outlet Temperature – Internal Water Setting Temperature > -1.5°C for
continuously 3 minutes.
Compressor is ON after waiting for 3 minutes, if the Water Outlet Temperature – Water Inlet Temperature
(temperature at thermostat OFF is triggered) >3°C.
12.1.3.2 Cool Mode Operation
1 3 ways valve control:
o 3 ways valve switch and fix to cooling side.
2 Heat pump operates follow normal cooling operation.
3 Back up heater DOES NOT operate during cool mode.
4 Solar 3 way valve operates follow solar operation specification.
5 2 ways valve control:
o 2 ways valve is closed.
Cool Mode Operation Time Chart
Heat Pump
On
Off
On
Off
3 ways valve
Mode On
HeatPump
Thermo On
Backup Heater
On
Off
ater Outlet Temp
8.5
o
C
16
o
C
On
Off
Solar 3 way valve
2 ways valve
Open
Close
HeatPump
Thermo Off
On
Off
Solar Request
Tank Temp.
77
o
C
70
o
C
Solar Off due to
tank > solar temp.
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