Information on 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 performance factor N
L
■ DHW heating from 10 to 45 °C
Cylinder capacity
l
300
500
750
950
Peak output
at heating water flow temperature
90 °C
l/10 min
407
618
850
937
80 °C
l/10 min
399
583
770
915
70 °C
l/10 min
385
540
665
875
Max. draw-off rate (over 10 min)
■ Relative to performance factor N
L
■ With reheating
■ DHW heating from 10 to 45 °C
Cylinder capacity
l
300
500
750
950
Max. draw-off rate
at heating water flow temperature
90 °C
l/min
41
62
85
94
80 °C
l/min
40
58
77
92
70 °C
l/min
39
54
67
88
Drawable water volume
■ Cylinder content heated to 60 °C
■ Without reheating
Cylinder capacity
l
300
500
750
950
Draw-off rate
l/min
15
15
20
20
Drawable water volume
Water at t = 60 °C (constant)
l
240
420
615
800
Heat-up time
The heat-up times will be achieved when the maximum continuous
output of the DHW cylinder is made available at the relevant heating
water flow temperature and when DHW is heated from 10 to 60 °C.
Cylinder capacity
l
300
500
750
950
Heat-up time
at heating water flow temperature
90 °C
min
23
28
23
35
80 °C
min
31
36
31
45
70 °C
min
45
50
45
70
Installation accessories
(cont.)
80
VIESMANN
VITOCAL
6
5831388
