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
390
500
Peak output
at heating water flow temperature
90 °C
l/10 min
415
540
690
80 °C
l/10 min
400
521
667
70 °C
l/10 min
357
455
596
Max. draw-off rate (over 10 minutes)
Relative to performance factor N
L
With reheating
DHW heating from 10 to 45 °C
Cylinder capacity
l
300
390
500
Max. draw-off rate
at heating water flow temperature
90 °C
l/min
41
54
69
80 °C
l/min
40
52
66
70 °C
l/min
35
46
59
Installation accessories
(cont.)
VITOCAL
VIESMANN
73
5831388
6
