Viessmann VITOCAL Series - Page 80

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