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
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