Viessmann VITOCELL 300-H Technical Data Manual page 6

Vitocell 300-H, 42 to 119 USG / 160 to 450 ltr
Domestic hot water draw rate
Storage tank contents heated to 140°F / 60°C, boiler not reheating
Storage Capacity USG
ltr
Domestic hot water GPM
draw rate ltr/min
Domestic hot water USG
draw ltr
Water with
t = 140°F/60°C (constant)
Percentage Tank Volume
Heat-up time
The stated heating times are achieved when the maximum recovery
rate of the domestic hot water tank is made available at the
respective supply temperature and with a domestic hot water rise
from 50 to 140°F / 10 to 60°C.
Storage Capacity USG
ltr
Heating water supply
temperature
194°F / 90°C
176°F / 80°C
158°F / 70°C
Pressure drop on domestic hot water side
(secondary circuit)
8 20
4 10
3.2 8
2.4 6
2 5
1.6 4
1.2 3
0.8 2
0.4 1
10 20 30
3 5 8
Waterflow
42 and 53 USG / 160 and 200 ltr storage capacity
92 and 119 USG / 350 and 450 ltr storage capacity
6
42 53 92
160 200 350
2.6 2.6 4.0
10 10 15
40 49 83
150 185 315
94% 93% 90%
42 53 92
160 200 350
Heat-up time (minutes)
19 18 15
26 25 20
34 32 31
ltr/min
40 50 60 80
GPM
11 13 16 21
Pressure drop on heating water side
(primary circuit)
119
450
4.0
15
400 1000
320 800
116
440
240 600
200 500
160 400
97%
120 300
80 200
40 100
32 80
24 60
119
20 50
450
16 40
12 30
20
8 20
26
40
4 10
3.2 8
2.4 6
2 5
1.6 4
1.2 3
Waterflow
42 USG / 160 ltr storage capacity
53 USG / 200 ltr storage capacity
92 USG / 350 ltr storage capacity
119 USG / 450 ltr storage capacity
ltr/h
GPM
VITOCELL 300-H