Grundfos Magna1 twin pump control

[Rafal.sparky]

Hi to all,

I have got dual pump set Grandfos Magna1 installed. Those pumps can be constantly running when paired wirelessly.
However, I would like to be able switching them on and off separately, for example 3 hours pump1 is running then pump2 for another 3 hours.
To achieve that I assume integrated relay terminals must be used. Do you know any single device that can be used to control those relays in some intervals?

Thanks,

Rafal

 

[PEG]

Hi,what model is the set? Is it the dual head or two separate pump sets?

 

[Rafal.sparky]

This is a dual head, MAGNA 1D 32-80 180 model C.

 

[snowhead]

Why 3hrs changeover,?
On twin pumps its usual to set them to change over either every 24hrs or each time they start up.
On Magna twins you can do 24hr changeover without any external control, apps or having to use Grundfos GO.

 

[Rafal.sparky]

Re 3 hours this is what I have been asked by plumber.
Could you tell me more details about 24h intervals without external control? How to achieve that?

 

[Rafal.sparky]

Do anybody can help with above please?

In my scenario, I have dual pump set which (if I understand correctly) to operate separately each of them required permanent power so both can "remember " settings on "display" and small link wire has to be removed. Than those terminals can be used to start/stop function.
Also, at the beginning both pumps must be unpaired.
In my case, one dual head pumps are used for heating so needs to be switched on only when call for heat. Another dual head pumps are for hot water and same, switch on when call for hot water.