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INSTALLER SETTING
ENGLISH
Auto mode - Seasonal auto temp.
If mode is set to Auto, the target temperature is adapted to outside air temperature.
This way of control is much more energy efficient than heating(cooling) mode with fixed target
temperature. If ‘Mode’ is set to ‘Heating & Cooling’, it is possible to define outdoor temperatures
at which the unit switch-over from Heating to Off to Cooling and vice versa.
1) Without Backup heater, the lowest outlet water temp. is 20 °C.
2) If Control method is set to ‘Outlet’ water temperature control, the maximum setpoint in
heating is 65 °C.
※ Range is limited by settings in menu ‘Circuit 1(2) / Room cooling / Water cooling set temp.’
In case of ‘Inlet water control’, the minimum setpoint is 5 degrees higher compared to ‘Outlet
water temp. control’.
Setting Description Control method Range
Default
Boundary
Circuit 1 Circuit 2
O1 Heating design temp.
all
-25 ~ 35 °C
-10 °C -10 °C
O1 ≤ O2 -1
O2 Heating limit temp. 18 °C 18 °C
O2 ≥ O1 +1
O2 ≤ O3 -5
O3 Enable cooling
10 ~ 46 °C
30 °C 30 °C
O3 ≥ O2 +5
O3 ≤ O4 -1
O4 Cooling design temp. 40 °C 40 °C
O4 ≥ O3 +1
W1 High temp. (Heating)
Water /
Water + Air
15
1)
~ 75
2)
°C
50 °C 35 °C
W1 ≥ W2
W2 Low temp. (Heating) 40 °C 28 °C
W2 ≤ W1
W3 High temp. (Cooling)
5 ~ 27 °C
12 °C 18 °C
W3 ≥ W4
W4 Low temp. (Cooling) 10 °C 16 °C
W4 ≤ W3
A1 High temp. (Heating)
Air
16 ~ 30 °C
21 °C 21 °C
A1 ≥ A2
A2 Low temp. (Heating) 19 °C 19 °C
A2 ≤ A1
A3 High temp. (Cooling)
18 ~ 30 °C
21 °C 21 °C
A3 ≥ A4
A4 Low temp. (Cooling) 19 °C 19 °C
A4 ≤ A3
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