Cylinder temperature sensor for solar operation
Arrangement of cylinder temperature sensor in the heating water
return HR
s
A
Cylinder temperature sensor (standard delivery of solar control
unit)
B
Threaded elbow with sensor well (standard delivery, internal
diameter 6.5 mm)
Performance factor N
L
■ To DIN 4708
■ Upper indirect coil
■ Cylinder storage temperature T
cyl
= cold water inlet tempe
50 K
+5 K/-0 K
Cylinder capacity
l
300
400
500
750
*2
950
*2
Performance factor N
L
at heating water flow temperature
90 °C
1.6
3.0
6.0
8.0
11.0
80 °C
1.5
3.0
6.0
8.0
11.0
70 °C
1.4
2.5
5.0
7.0
10.0
Information regarding performance factor N
L
The performance factor N
L
changes in line with the cylinder storage
temperature Tcyl.
Standard values
■ T
cyl
= 60 °C → 1.0 × N
L
■ T
cyl
= 55 °C → 0.75 × N
L
■ T
cyl
= 50 °C → 0.55 × N
L
■ T
cyl
= 45 °C → 0.3 × N
L
Peak output (over 10 minutes)
■ Relative to performance factor N
L
■ DHW heating from 10 to 45 °C
Cylinder capacity
l
300
400
500
750
*2
950
*2
Peak output at heating water flow temperature
l/10 min
90 °C
173
230
319
438
600
80 °C
168
230
319
438
600
70 °C
164
210
299
400
550
Max. draw-off rate (over 10 minutes)
■ Relative to performance factor N
L
■ With reheating
■ DHW heating from 10 to 45 °C
Cylinder capacity
l
300
400
500
750
*2
950
*2
Max. draw-off rate at heating water flow temperature
l/min
90 °C
17
23
32
44
60
80 °C
17
23
32
44
60
70 °C
16
21
30
40
55
*2
Values determined by calculation.
DHW cylinders
(cont.)
VITOSOL
VIESMANN
49
5822 440 GB
7
