Water Flow - Viessmann Vitocell 300-V Technical Data Manual

Technical Data

Water Flow

Domestic hot water draw rate
Storage tank contents heated to 140°F (60°C), boiler not
reheating.
Storage capacity
Domestic hot water
draw rate
Domestic hot water
draw water with
t= 140°F (60°C)
(constant)
% 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
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)
6
USG 53 79
(L) (200) (300)
GPM 2.6 4.0
(L/min) (10) (15)
USG 37 72
(L) (139) (272)
70 91
USG 53 79
(L) (200) (300)
Heat-up time (minutes)
11.4 15.5
15 21.5
23.5 32.5
Pressure drop on heating water side (primary circuit)
119
(450)
4.0
(15)
109
(413)
92
119
(450)
20
24
35
Legend
A 79 USG (300 L) and 119 USG (450 L) storage capacity
B 53 USG (200 L) storage capacity
Vitocell 300-V, EVI Series Technical Data