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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 Room heater DOES NOT operate during cool mode.
4 2 ways valve control:
o
2 ways valve is closed.
12.1.4 Target Water Temperature Setting
12.1.4.1
Target Water Temperature Control of Standard System (Optional PCB not
connected)
There are 2 types of temperature control selection which are Compensation and Direct.
Temperature control type selection by installer:
1) Compensation : Wlo, WHi, ODLo, ODHi can be set at installer menu.
2) Direct
: Direct Water Temperature Set
Remote control setting by user:
1) Compensation : Shift value ±5°C from the compensation curve
2) Direct
: Direct water temperature set change
*This setting at is only able to set when the room sensor select Water Temperature or External Room Thermostat.
Target water temperature is calculated as below condition.
-
Target water temperature = A (Base temperature) + B (shift temperature)
A (Base Temperature)
Compensation
Direct
Value from the curve + User shift value set
Direct value from user setting
-
B (shift temperature) value is depend on the room sensor selection at remote controller as below table:
Sensor selection
Water temperature
B = 0
External Room thermostat
B = 0
Internal Room thermostat
B = 1 (room set temperature R/C - actual room temperature)
max/min regulation of B: Max = 5°C Min = -5°C
Room thermistor
Maximum/minimum regulation of Target Water Temperature.
Heating
Cooling
Max
55°C
20°C
Min
20°C
5°C
