Technical Data
8
VITOCROSSAL 300, CT3
Pressure drop (primary circuit)
The Vitocrossal 300 boiler is only suitable for heating systems with
pumped heating water.
Legend:
CT3-17 to -22
CT3-28
CT3-37 to -57
CT3-72 to -89
Recommended Flow Rates
Boiler model
CT3-
17
22
28
37
46
57
72
89
20°F
∆
t
40°F
∆
t
11°C
∆
t
22°C
∆
t
GPM
GPM
ltrs/s
ltrs/s
61
31
3.9
2.0
81
41
5.1
2.6
103
52
6.5
3.3
134
67
8.5
4.2
166
83
10.5
5.3
208
104
13.2
6.6
260
130
16.5
8.2
323
162
20.4
10.3
"
∆
t
= temperature difference
"
This boiler does not require a flow switch.
5
2
8
5
8
7
1
v
1
.9
60
80
70
8
7
1
2
3
4
5
6
10
20
30
40
50
60
100
2
3
4 5 6 7 8 10
20
30 40 50
Flow rate
P
re
s
s
u
re
d
ro
p
40
20
16
”w.c.
8.8 13.2
17.6
22
26.4
44
88
132 176
GPM
220
264
308
352
mbar
m
3/
h
70 80
32
28
24
12
8
3.2
4
2.8
2.4
2
1.6
1.2
0.8
0.4
