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)
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
500
Performance factor N
L
at heating water flow temperature
90 °C
2.4
7.0
80 °C
2.2
6.5
70 °C
2.0
6.0
Information regarding performance factor N
L
The performance factor N
L
depends on the cylinder storage temper-
ature T
cyl
.
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 the performance factor N
L
.
DHW heating from 10 to 45 °C.
Cylinder capacity
l
300
500
Peak output (l/10 min) at heating water flow temperature
90 °C
211
404
80 °C
203
333
70 °C
195
319
Max. draw-off rate (over 10 minutes)
Relative to the performance factor N
L
.
With reheating.
DHW heating from 10 to 45 °C.
Cylinder capacity
l
300
500
Max. draw-off rate (l/min) at heating water flow temperature
90 °C
21.1
40.4
80 °C
20.3
33.3
70 °C
19.5
31.9
DHW cylinders
(cont.)
58
VIESMANN
VITOSOL
7
5822 440 GB