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8-2.
Operation
Mode and
Control Method
11) AUTO operation
An auto operation sets the water temperature TSC_F depending on the outside temperature TO by following the table
below.
1)How to operate
• Pressing the remote controller [ZONE1, 2] button and then the [AUTO] button starts AUTO operation for heating. An
operation starts at the set temperature of straight -line approximation for the following: water temperature 40°C with
the outside temperature -20°C (FC), 35°C with -10 °C (T1)(FC), 30°C with 0°C (FC), 25°C with 10°C (T3), and 20°C
with 20°C (TC).
• For 2-temperature control, although Auto-Curve in ZONE2 shows 80% of that of ZONE1 (FC), the water temperature
setting does not fall below 20°C.
• During an AUTO operation, pressing again the [AUTO] button returns to the usual manual set heating operation.
• The remote controller displays "A" as the temperature during an AUTO operation.
(When 2-temperature control is enabled, the remote controller displays "A" "A".)
• Long-pressing the [AUTO] button during an AUTO operation activates the Auto-Curve FC change mode, enabling
the set Auto-Curve water temperature to be changed in the ±5K range. (FC_27)
• Even if the temperature setting is changed during an AUTO operation, the operation continues.
• An AUTO operation works with a heating operation only, not with a cooling or a hot water supply operation.
Related FC
Item Operation flow and applicable data, etc.
-10
(T1)
-20
20(E)
25(D)
30(C)
35(B)
40(A)
010
(T3)
20
Auto-Curve
ZONE1
Auto-Curve
ZONE2
FC No. Setting item Default Setting available range
27 Set temperature shift with heating set to Auto 0 -5 to 5 k
29 Outside air temperature T1 temperature -10°C -15-0°C
2B Outside air temperature T3 temperature 10°C 0-15°C
2C Set temperature when out side air temperature is -20 °C. 40°C 20-55°C
2D Set temperature when out side air temperature is -10 °C (T1). 35°C 20-55°C
2E Set temperature when out side air temperature is 0 °C. 30°C 20-55°C
2F Set temperature when out side air temperature is 10 °C (T3). 25°C 20-55°C
30 Set temperature when out side air temperature is 20 °C. 20°C 20-55°C
31 Auto-Curve ratio of
ZONE2
80% 0-100%
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 46 Monday, October 5, 2009 2:09 PM