Viessmann VITOSOL 100-F SV Technical Manual page 85

DHW cylinders
(cont.)
Performance factor N
L
To DIN 4708.
Cylinder storage temperature T
cyl
+50 K +5 K/-0 K and 70 °C heating water flow temperature
Performance factor N subject to the heating output delivered by the boiler (Q
L
Cylinder capacity
Q in kW
D
15
18
22
27
33
Information regarding performance factor
The performance factor N depends on the cylinder storage tempera-
L
ture T .
cyl
Standard values
■ T = 60 °C → 1.0 × N
cyl L
■ T = 55 °C → 0.75 × N
cyl L
■ T = 50 °C → 0.55 × N
cyl L
■ T = 45 °C → 0.3 × N
cyl L
Peak output (over 10 minutes)
Relative to the performance factor N
DHW heating from 10 to 45 °C and 70 °C heating water flow temper-
ature
Peak output (l/10 min) subject to the heating output delivered by the boiler (Q
Cylinder capacity
Q in kW
D
15
18
22
27
33
Max. draw-off rate (over 10 minutes)
Relative to the performance factor N
With reheating.
DHW heating from 10 to 45 °C and 70 °C heating water flow temper-
ature.
Max. draw-off rate (l/min) subject to the heating output delivered by the boiler (Q
Cylinder capacity
Q in kW
D
15
18
22
27
33
Drawable water volume
Cylinder content heated to 60 °C.
Without reheating.
Draw-off rate
Drawable water volume
Water with t = 45 °C (mixed temperature)
750 l
950 l
VITOSOL
= cold water inlet temperature
l
.
L
l
.
L
l
l/min
)
D
750
N performance factor
L
2.00
2.25
2.50
2.75
3.00
)
D
750
Peak output
190
200
210
220
230
)
D
750
Max. draw-off rate
19.0
20.0
21.0
22.0
23.0
10
255
331
950
3.00
3.20
3.50
4.00
4.60
11
950
230
236
246
262
280
950
23.0
23.6
24.6
26.2
28.0
20
190
249
VIESMANN
85