24
STHSC ed 0710
HERCULES Solar 26 1A
Technical Documentation
Technical Documentation
Key:
1 - Solar pump
2 - Non-return valve, thermometer and cock
3 - Valve drain fitting
4 - Flow meter
5 - 6 bar safety valve
6 - 3/4” connection for expansion vessel
7 - Gauge
8 - Draining valve
9 - Filling valve
10 - Insulating casing
11 - Flow rate regulator
12 - Inlet
13 - Output
14 - Reference for flow rate reading
1
2
3
4
5
6
7
6
10
11
1
4
8
12
9
14
2
13
3
5
1
IN
OUT
12
9
8
11
4
5
7
12
6
13
A - Head available to the pump group at third speed
B - Head available to the pump group at second speed
B
A
H
ead (m H
2
O)
H
ead (kP
a)
Flow rate Litres/h
Solar pump unit main components and hydraulic diagram
Head-flow rate graphics.
The trend of the curve that represents the flow rate-head ratio
available to the solar system, depends on the pump function-
ing speed
The following graphics show the characteristic curves depend-
ing on the pump speed.
