03
Sizing of safety equipment
Pipe Sizing
(minimum of 15mm diameter pipework must be used)
Cooling Vessel Sizing
(only required with DF400 systems)
It is strongly recommended that a cooling vessel is used with the DF400 collector to
protect the expansion vessel from stagnation temperatures.
Important Pre-Installation Information
Collector
Area
(m
2
)
Flow Rate
Ltr/hr
DF400
(mbar)
HP400
(mbar)
Pipe Diameter
Copper
External (mm)
2 120
15
8.54
4.11
3 180
15
12.57
10.47
4 240
15
17.08
8.22
5 300
22
21.11
14.58
6 360
22
25.14
20.94
8 480
22
33.68
25.05
Model
Collector Area
System Volume
Static Height
Vessel Size
(m
2
)
(Ltrs)
HP400 2
17 5 18
3
17
5
18
4
18
5
18
5
19
5
18
DF400 2
19 5 18
3
20
5
25
4
22
5
25
5
24
5
35
Expansion Vessel Sizing
Cooling Vessel Sizing
Model
Collector Area
System Volume
Static Height
Vessel Size
Cooling Vessel
(m
2
)
(Ltrs)
Size
DF400 2
19
5 18 5
3
20
5
25
8
4
22
5
25
8
5
24
5
35
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