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Hy,
I want to run a Viessmann 111 B1LF on UFH without a external pump and low loss header.
The internal pump is Grunfos UPM3 15-75 so it is powerfull. I set up the pump from b2 config menu to 100% maximum upper limit. And the bypass valve it is set to maximum which mai be 2mca if I read it correctly.
The question is if it could run properly on UFH with maximum 80m of 17(2)mm pex (rehau) circuits and 10m of 32mm pex for manifolds?
What is the pressure drop for my sistem?
I want to run a Viessmann 111 B1LF on UFH without a external pump and low loss header.
The internal pump is Grunfos UPM3 15-75 so it is powerfull. I set up the pump from b2 config menu to 100% maximum upper limit. And the bypass valve it is set to maximum which mai be 2mca if I read it correctly.
The question is if it could run properly on UFH with maximum 80m of 17(2)mm pex (rehau) circuits and 10m of 32mm pex for manifolds?
What is the pressure drop for my sistem?
