66
7-2.
Operation Mode
and Control
Method
12) Auto operation
An Auto operation sets the water temperature TSC_F depending on the outside air temperature TO.
1) How to operate
• Pressing the remote controller [
] button and then setting Auto mode "ON" starts Auto operation for heating.
• During an Auto operation, setting Auto mode "OFF" 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".)
• Long-pressing the [
] button in menu display activates the Auto-Curve DN change mode, enabling the set Auto-
Curve water temperature to be shifted by ±5K range (DN_27). When using the auto curve shift function please note
the maximum and minimum water temperature at 55 (65) °C and 20°C respectively.
* ( ): 801, 1101
• 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.
<ZONE1>
• An operation starts at the set temperature of straight -line approximation for the following: water temperature A°C
with the outside temperature T0°C, B°C with T1°C, C°C with T2°C, D°C with T3°C, and E°C with 20°C.
<ZONE2>
• Set temperature of the ZONE2 can be selected from two methods (DN_A2). One is a percentage of ZONE1, the other
is a fixed value.
DN_A2 = "0": Percentage method that is set by DN_31.
DN_A2 = "1": Fixed value method that is set by DN_A3, A4 and A5.
However, it is automatically controlled the set temperature of ZONE1 to be the ZONE2 or more.
Item Operation flow and applicable data, etc.
TSC_F
(°C)
A (40)
B (35)
C (30)
D (25)
E (20)
T0
(-20)
T1
(-10)
T3
(10)
±
5K adjustable (DN_27)
(°C)
Related DN
* ( ): 801, 1101
DN
Setting item Default range
2C Setting temperature A at T0 40 20 ~ 55 (65) °C
2D Setting temperature B at T1 35 20 ~ 55 (65) °C
2E Setting temperature C at T2 (= 0
°C) 30 20 ~ 55 (65) °C
2F Setting temperature D at T3 25 20 ~ 55 (65) °C
30 Setting temperature E at 20
°C 20 20 ~ 55 (65) °C
A1 Outside temperature T0 -20 -30 ~ -20°C
29 Outside temperature T1 -10 -15 ~ 0°C
2B Outside temperature T3 10 0 ~ 15°C
27
Set temperature shift with heating set to auto
0 -5 to 5K
ZONE 2
80% (DN_31) of ZONE1
Auto-Curve in ZONE2 shows 80% (DN) of that of ZONE1,
the water temperature setting does not fall below 20°C.
The ZONE2 set temperature A'°C with the outside
temperature T0°C, B'°C with T1°C, E'°C with 20°C.
Related DN
* ( ): 801, 1101
DN
Setting item Default range
A2 The choice of how to set ZONE2 0 0 or 1
A3 Setting temperature A' at T0 40 20 ~ 55 (65) °C
A4 Setting temperature B' at T1 35 20 ~ 55 (65) °C
A5 Setting temperature E' at 20 °C 20 20 ~ 55 (65) °C
31 Auto-Curve ratio of ZONE2 80 0 ~ 100%
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