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:
3 ways valve switch and fix to cooling side.
o
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:
2 ways valve is closed.
o
Cool Mode Operation Time Chart
3 ways valve
On
Off
2 ways valve
Open
Close
Heat Pump
On
Off
Backup Heater
On
Off
Water Outlet Temp
Mode On
8.5°C
HeatPump
Thermo Off
66
16°C
HeatPump
Thermo On