Viessmann VITOGAS Technical Manual page 28

DHW cylinder
(cont.)
WW DHW
Z DHW circulation
Cylinder capacity l
a mm
b mm
c mm
d mm
e mm
f mm
Dim. a: Minimum wall clearance to enable the installation/removal of
the protective magnesium anode.
Performance factor N
L
to DIN 4708
Cylinder storage temperature T
+5 K/–0 K
Cylinder capacity
Performance factor N
L
3
at heating water flow temperature
90 °C
80 °C
70 °C
Performance factor N
L
The performance factor N
L
temperature T .
cyl
Standard values
→ 1.0 × N
■ T
= 60 °C
cyl L
→ 0.75 × N
■ T
= 55 °C
cyl L
→ 0.55 × N
■ T
= 50 °C
cyl L
→ 0.3 × N
■ T
= 45 °C
cyl L
Peak output (over 10 minutes)
Relative to the performance factor N
45 °C
Cylinder capacity
Peak output (l/10 min)
at heating water flow temperature
90 °C
80 °C
70 °C
Max. draw-off rate (over 10 minutes)
Based on performance factor N
With booster
DHW heating from 10 to 45 °C
Cylinder capacity
Max. draw-off rate (l/min)
at heating water flow temperature
90 °C
80 °C
70 °C
Available water volume
Cylinder volume heated to 60 °C
Without booster
Cylinder capacity
Draw-off rate
Available water volume
Water with t = 60 °C (constant)
VIESMANN
28
130 160
200 250
471 616
721 866
907 1052
640 640
654 654
= cold water inlet temperature +50 K
cyl
l
varies according to the cylinder storage
and DHW heating from 10 to
L
l
L
l
l
l/min
l
200
300
780
1030
1216
640
654
130
1.3
1.3
1.1
130
159
159
148
130
16
16
15
130
10
100
160 200
2.2 3.5
2.2 3.5
1.6 2.5
160 200
199 246
199 246
173 210
160 200
20 24
20 24
17 21
160 200
10 10
145 180
VITOGAS