• 23.02.2020, 03:26
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Junior Member

Is it correct MPS Pressure connection scheme ?

Friday, February 14th 2020, 12:14am

I attached picture as connection scheme on vertical 140 mm radiator, is it correct regarding documentation https://www.manualslib.com/manual/123976…l?page=8#manual ?

Also how to understand which MPS's to use for fill level and pressure sensor? There are 40,100,500,1000 of "Pressure sensor mps pressure Delta", my radiator approved for 0.8 bar pressure with very large water circle so I think MPS Delta 1000 as pressure sensor and my reservoir 150 ml with 170 mm of height so for fill level it's MPS Delta 200, or I am wrong?

As I understand than lower delta then more accurate sensor.
smud has attached the following image:
  • MPS diagram.png


Senior Member

Friday, February 14th 2020, 3:12pm

As to your diagram, since you are using the 'Pressure Equalization Membrane', the 'Low Port' on the 'MPS Fill Sensor' should be open to atmosphere, NOT closed. In this way you are using atmosphere as the return line between the top of the reservoir and the 'Low Port'.

With 170mm water column the MPS 200 sounds right.

I do not know what pressure you will see across the pump, but having a maximum allowance on the reservoir may not be indicative of your actual pressure. I know in the Dr. Drop manual, aquacompiter says not to go above 0.5 bar, but again, I do not know how that relates to real system pressures. Perhaps someone with experience will jump in.


Junior Member

Friday, February 14th 2020, 4:22pm

Good to know what "Low" must be open as fill level for my scheme. I totally understand work mechanism now :)

So I guess I need to buy some Manometer in case to track somewhere in visible area pressure during normal operation..

This post has been edited 1 times, last edit by "smud" (Feb 14th 2020, 6:18pm)