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Optimized heating curve
The optimize heating curve (Control type: External opt.) is a
curve that curves upward and is based on the precise
+20
140
F
122
104
86
68
+68
Settings for heating curve with Low Temp. heating
Fig. 13
Left: Slope changed by adjusting design temperature T
Right: Parallel shifting over desired room temperaturer
T
Outdoor temperature
A
T
Supply temperature
VL
[1] Setting: T
= 113 °F (45 °C), T
AL
[2] Setting: T
= 104 °F (40 °C), T
AL
[3] Setting: T
= 95 °F (35 °C), T
AL
[4] Parallel shifting of the base curve [1] by increasing the desired room temperature, limited to T
[5] Parallel shifting of the base curve [1] by increasing the reducing room temperature
+20
+10
194
F
176
158
140
122
104
86
68
+68
+50
Settings for heating curve with High Temp heating
Fig. 14
Left: Slope changed by adjusting design temperature T
Rechts: Parallel shifting over desired roomtemperaturer
T
Outdoor temperature
A
T
Supply temperature
VL
[1] Setting: T
= 167 °F (75 °C), T
AL
[2] Setting: T
= 176 °F (80 °C), T
AL
[3] Setting: T
= 158 °F (70 °C), T
AL
[4] Parallel shifting of the base curve [1] by increasing the desired room temperature, limited to T
[5] Parallel shifting of the base curve [1] by increasing the reducing room temperature, limited to T
6 720 821 651 (2017/05)
+10
0
-10
1
2
+32
+50
+14
T
A
= 14 °F (–10 °C) (base curve), limited to T
A,min
= 14 °F (–10 °C), limited to T
A,min
= –4 °F (–20 °C), limited to T
A,min
0
-10
1
2
3
+32
+14
T
A
= 14 °F (–10 °C) (base curve ), limited to T
A,min
= 14 °F (–10 °C), limited to T
A,min
= –4 °F (–20 °C), limited to T
A,min
correlation between the supply temperature and the relevant
outside temperature (
C
-20
+20
140
60
F
C
122
50
104
40
86
30
3
68
20
-4
+68
F
and minimum outdoor temperature T
AL
= 118 °F (48 °C)
VL,max
= 118 °F (48 °C)
VL,max
C
-20
+20
194
90
F
C
176
80
158
70
140
60
122
50
104
40
86
30
68
20
-4
+68
F
and minimum outdoor temperature T
AL
= 176 °F (80 °C)
VL,max
= 167 °F (75 °C)
VL,max
).
+10
0
-10
4
1
+32
+50
+14
T
A
A,min
= 118 °F (48 °C)
VL,max
= 118 °F (48 °C)
VL,max
+10
0
-10
1
4
5
+50
+32
+14
T
A
A,min
= 167 °F (75 °C)
VL,max
= 176 °F (80 °C)
VL,max
= 167 °F (75 °C)
VL,max
C
-20
60
C
50
40
30
5
20
-4
F
6 720 811 135-29. 1O
C
-20
90
C
80
70
60
50
40
30
20
-4
F
6 720 811 153-19. 1O
CRC200
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