Viessmann EHA Series - Page 6

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5696 674 - 03
Vitocell 300-H, EHA Series Technical Data
Technical Data
Pressure Drop
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).
Domestic hot water draw rate
Pressure drop on domestic hot water side (secondary circuit)
Pressure drop on heating water side (primary circuit)
Storage Capacity USG
(L)
42
(160)
53
(200)
92
(350)
119
(450)
Heating water supply
temperature
194°F (90°C)
176°F (80°C)
158°F (70°C)
Heat-up time (minutes)
19
26
34
18
25
32
15
20
31
20
26
40
Storage Capacity USG
(L)
42
(160)
53
(200)
92
(350)
119
(450)
Domestic hot
water draw rate
GPM
(L/min)
2.6
(10)
2.6
(10)
4.0
(15)
4.0
(15)
Domestic hot
water draw
Water with
t=140°F (60°C)
(constant)
USG
(L)
40
(150)
49
(185)
83
(315)
116
(440)
Percentage Tank
Volume
94% 93% 90% 97%
Storage tank contents heated to 140°F (60°C), boiler not
reheating
Legend
A 42 USG (160 L) storage capacity
B 53 USG (200 L) storage capacity
C 92 USG (350 L) storage capacity
D 119 USG (450 L) storage capacity
Legend
A 42 and 53 USG (160 and 200 L) storage capacity
B 92 and 119 USG (350 and 450 L) storage capacity