Viessmann VITOLIGNO 200-S Technical Manual page 55

DHW cylinder and heating water buffer cylinder
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
VITOLIGNO 200-S
= cold water inlet temperature
l
.
L
l
.
L
l
l/min
(cont.)
)
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
4
950
230
236
246
262
280
950
23.0
23.6
24.6
26.2
28.0
20
190
249
VIESMANN
55