Viessmann Vitosol 100-FM Technical Manual page 68

DHW cylinders
Continuous output
Continuous output
For DHW heating from 10 to 45 °C and a heating water flow temperature of 70 °C at the heating
water flow rate stated below (tested at HV
Heating water flow rate for the stated continuous outputs
For DHW heating from 10 to 60 °C and a heating water flow temperature of 70 °C at the heating
water flow rate stated below (tested at HV
Heating water flow rate for the stated continuous outputs
Information regarding continuous output
When engineering systems with the specified or calculated continu-
ous output, factor in a matching circulation pump. The stated contin-
uous output is achieved only if rated boiler heating output is ≥ contin-
uous output.
Performance factor N
L
■ To DIN 4708
■ Cylinder storage temperature T
+5 K/-0 K
+50 K and 70 °C heating water flow temperature
Performance factor N
L
Cylinder capacity
Q in kW
D
15
18
22
27
33
Information regarding performance factor
The performance factor N
ature T .
cyl
Standard values
■ T = 60 °C → 1.0 × N
cyl
■ T = 55 °C → 0.75 × N
cyl
■ T = 50 °C → 0.55 × N
cyl
■ T = 45 °C → 0.3 × N
cyl
Peak output (over 10 minutes)
■ Relative to performance factor N
■ DHW heating from 10 to 45 °C and 70 °C heating water flow tem-
perature
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
7
33
Max. draw-off rate (over 10 minutes)
■ Relative to performance factor N
■ With reheating
■ DHW heating from 10 to 45 °C and 70 °C heating water flow tem-
perature
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
VIESMANN
68
(cont.)
/HR )
1 1
/HR )
1 1
= cold water inlet temperature
cyl
subject to the heating output delivered by the boiler (Q
depends on the cylinder storage temper-
L
L
L
L
L
L
L
)
D
l
N
L
)
D
l
)
D
l
Max. draw-off rate
kW 15 22
l/h 368 540
l/h 252 378
l/h 258 378
l/h 281 457
750
performance factor
2.00
2.25
2.50
2.75
3.00
750
Peak output
190
200
210
220
230
750
19.0
20.0
21.0
22.0
23.0
33
810
610
567
836
950
3.00
3.20
3.50
4.00
4.60
950
230
236
246
262
280
950
23.0
23.6
24.6
26.2
28.0
VITOSOL