Increasing pressure in part of the system

[caba]

Hi All,
I would like to ask you for advice. I have installed a LPG boiler for our central heating. The boiler works with 1.5bar pressure. We have our borehole with pump. The borehole supplies 3 troghs in surrounding fields. Previous system worked on app 3 bar. This pressure was sufficient to push the water up the hill to the highest trogh. Once we dropped the pressure on our pressure vessel the top two troghs do not fill due to the lack of pressure. Is there a way how to "split" the pressure for 1.5bar in the heating system and 3bar on the other side?
Thank you very much for your comments!!

 

[Phill Peck]

Good luck with that

 

[simond]

Do you mean 'troughs'? Are these drinking water troughs for livestock?

What relevance have the troughs got with the water pressure in your radiators? Struggling to understand the question.

 

[libby lou lou]

Your using your "trougs" to supply water to your boiler?

 

[swbjackson]

Perhaps you should speak to the installer that installed the boiler for you.

 

[caba]

Thank you for your comments. Yep, I ment troughs to feed animals. I have asked the boiler technician but he was not sure if that was possible.
Obviously I did not describe the situation well...
We have a borehole which feeds as our house so 3 throughs in surrounding fields. Old system in the house did run on 3 bar. Our new central heating is running on 1.5 bar. This pressure is not high enough to push the water into the top field. Do you think that secondary pressure vessel or PRV set to higher pressure would do it?
Thanks for your help!

 

[twgas]

your heating system pressure will have nothing to do with suppling water to the troughs. 1.5bar is plenty for normal heating systems.

 

[oldbuffer]

Two approaches worth considering:

a. Check if new boiler will accept an input pressure of 3 bar. If so, raise bore output pressure back to what it was. Consider installing pressure reducing valve set to 3 bar before boiler "just in case".

b. If new boiler is 1.5bar maximum, raise bore output pressure back to 3 bar and fit good quality (e.g. Honeywell) pressure reducing valve in boiler / domestic feed.

 

[caba]

Thank you very much for your advice. I will proceed as you suggest. Regards, Peter

 

[picasso]

or you could just fill your central heating system up to 1.5 bar and switch the filling loop off,

Untitled

• picasso
• 10 Oct 2010
• 6

this should be fitted between your cold main and your c/heating, it allows you to fill the system to whatever pressure the manufacturers recommend, then you can have 3 bar pressure at the taps/troughs without it affecting the boiler.