Hi lads, Im a Gas Safe registered engineer, awaiting aproval to join the Combustion Chamber......
Please can anyone help?
1-There is a Worcester Ri heat only boiler on an open vent system running on a Y plan.
2-Mid position valve its a switchmaster (blue one)
3-heating control its a potterton P2000 double chanel and heating stat on the wall.
I've added a 2 port honeywell valve to create a second zone, straight from the main flow from the boiler.
That goes to the UFH control stat/programer as well as pump/mixing manifold of the UFH.
Problem is that the boiler has the bloddy pump overun facility as a safety feature, and everytime the UFH comes on, also it puts a demand on the existing Y plan heating system, thus, overriding the original house's controls and by kicking the pump.
One think to remember is that, whenever the demand on heat its OFF on the existing heating system, the mid-position switchmanster valve its open for heating.
I cannot figure it out how to stop the heating being on in the main property, when im only putting a demand on the UFH at the newly build extension?
Can anyone one please send me some clues?
Much appreciated
Please can anyone help?
1-There is a Worcester Ri heat only boiler on an open vent system running on a Y plan.
2-Mid position valve its a switchmaster (blue one)
3-heating control its a potterton P2000 double chanel and heating stat on the wall.
I've added a 2 port honeywell valve to create a second zone, straight from the main flow from the boiler.
That goes to the UFH control stat/programer as well as pump/mixing manifold of the UFH.
Problem is that the boiler has the bloddy pump overun facility as a safety feature, and everytime the UFH comes on, also it puts a demand on the existing Y plan heating system, thus, overriding the original house's controls and by kicking the pump.
One think to remember is that, whenever the demand on heat its OFF on the existing heating system, the mid-position switchmanster valve its open for heating.
I cannot figure it out how to stop the heating being on in the main property, when im only putting a demand on the UFH at the newly build extension?
Can anyone one please send me some clues?
Much appreciated