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Hello All,
My first post. Just installed a Grundfos 6 SQF-2 pump sitting at 350' in well. Connected directly to 48 VDC batteries, I get 4GPM. In the process of hooking up the PV panels into the Grundfos CU200 smart box. The option for pressure switch is the same as the float switch according to Grundfos.
The pressure switch is a Square D type as described below. My question is, nowhere can I find a wiring diagram of how these two pieces connect. The CU200 smart box is two wire and the Square D pressure switch is 4 wire contacts. Any help would be greatly appreciated.
"The Square-D pressure switch is “reverse action” switch designed to be used with the Grundfos CU200 switch contacts. The pressure switch wiring is connected to the “float switch” control terminals in the CU200, just like a float switch would be. In that circuit it’s not carrying any of the PV power current. It’s just providing a contact closure to signal the CU200 to turn the pump off and on. It’s not meant to be installed in the PV power current path. The CU200 does that.
Grundfos does not make their own pressure switch for the SQFlex pumps. The Square-D switch is what they recommend.”
My first post. Just installed a Grundfos 6 SQF-2 pump sitting at 350' in well. Connected directly to 48 VDC batteries, I get 4GPM. In the process of hooking up the PV panels into the Grundfos CU200 smart box. The option for pressure switch is the same as the float switch according to Grundfos.
The pressure switch is a Square D type as described below. My question is, nowhere can I find a wiring diagram of how these two pieces connect. The CU200 smart box is two wire and the Square D pressure switch is 4 wire contacts. Any help would be greatly appreciated.
"The Square-D pressure switch is “reverse action” switch designed to be used with the Grundfos CU200 switch contacts. The pressure switch wiring is connected to the “float switch” control terminals in the CU200, just like a float switch would be. In that circuit it’s not carrying any of the PV power current. It’s just providing a contact closure to signal the CU200 to turn the pump off and on. It’s not meant to be installed in the PV power current path. The CU200 does that.
Grundfos does not make their own pressure switch for the SQFlex pumps. The Square-D switch is what they recommend.”
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