Toshiba HWT-602S21SM3W-E(TR) Service Manual page 80

Item
7-2. 12) Auto operation
Operation Mode
An Auto operation sets the water temperature TSC_F depending on the outside air temperature TO.
and Control
Method
1) How to operate
• Pressing the remote controller [
• 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 [
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, 1401
• 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.
TSC_F (°C)
A (40)
B (35)
C (30)
D (25)
E (20)
<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.
TSC_F (°C)
Auto-Curve in ZONE2 shows 80% (DN) of that of ZONE1,
the water temperature setting does not fall below 20°C.
Related DN
DN
A2
A3
A4
A5
31
* ( ): 801, 1101, 1401
Operation flow and applicable data, etc.
] button in menu display activates the Auto-Curve DN change mode, enabling the set Auto-
±5K adjustable (DN_27)
T0 T1 T2=0 T3
(-20) (-10) (10)
However, it is automatically controlled the set temperature of ZONE1 to be the ZONE2 or more.
DN_A2 = 0 Percentage method
ZONE 1
A (40)
B (35)
C
(30)
D
(25)
E
(20)
T0 T1 T2=0
(-20) (-10)
Setting item
The choice of how to set ZONE2
Setting temperature A' at T0
Setting temperature B' at T1
Setting temperature E' at 20 °C
Auto-Curve ratio of ZONE2
] button and then setting Auto mode "ON" starts Auto operation for heating.
Related DN
DN
2C Setting temperature A at T0
2D Setting temperature B at T1
2E Setting temperature C at T2 (= 0°C)
2F Setting temperature D at T3
30 Setting temperature E at 20°C
A1 Outside temperature T0
(°C)
20 TO
29 Outside temperature T1
2B Outside temperature T3
27
Set temperature shift with heating set to auto
* ( ): 801, 1101, 1401
TSC_F (°C)
A' (40)
ZONE 2
B'
(35)
80% (DN_31) of ZONE1
E'
(20)
T3 20 TO (°C)
(10)
The ZONE2 set temperature A'°C with the outside
temperature T0°C, B'°C with T1°C, E'°C with 20°C.
Default range
0 0 or 1
40 20 - 55 (65) °C
35 20 - 55 (65) °C
20 20 - 55 (65) °C
80 0 - 100%
79
Setting item Default
40
35
30
25
20
-20
-10
10
0
DN_A2 = 1 Fixed value method
T0 T1
(-20) (-10)
range
20 - 55 (65) °C
20 - 55 (65) °C
20 - 55 (65) °C
20 - 55 (65) °C
20 - 55 (65) °C
-30 - -20°C
-15 - 0°C
0 - 15°C
-5 to 5K
20 TO (°C)