Product Guide

Selection
SQFlex
3
17
SQFlex Solar
- with back-up batteries
During periods of limited solar energy, the SQFlex
Solar system provides reliable water supply.
The supply of water is ensured by back-up batteries
connected to the system via the charge controller.
The system is connected as shown in fig. 14.
• Power will be provided by the solar panels wired to
produce 48-110 VDC (rated).
• Power from the solar panels will feed into a 48 VDC
charge controller, which will regulate the current fed
to the batteries.
• From the charge controller, power passes into the
battery bank, which consists of the number of
appropriately sized batteries, wired in series to
achieve 48 VDC (rated) output.
• Power is drawn from the battery bank and routed
through a CU 200.
Option: An IO 50 or IO 101 is to be installed to
enable disconnection of the DC voltage.
If an IO 101 is installed, it is possible to add a
generator to the system.
• Power is run from the CU 200 to the SQFlex pump.
Benefits
The system offers water supply during the night or
during periods of insufficient solar energy.
Other benefits of the system include
• easy installation
• a minimum of maintenance
• few and simple components
• flexibility in terms of energy supply.
Fig. 14 SQFlex Solar with back-up batteries
TM03 4232 1906
kWattkWatt
16
17
11
12
6
19
1
4
5
18
7
3
2
Note: For the number of solar modules required,
please consult the sizing tool in Grundfos
WinCAPS.
1SQF pump
2 Submersible drop cable
3 Cable clips
4 Straining wire
5 Wire clamp
6 Solar panels
7 Support structure
11 CU 200 SQFlex control unit
12 IO 101 SQFlex switch box
(optional)
16 Charge controller
17 Batteries
18 Pressure switch
19 Pressure tank