Hi All
I replaced my central heating with a Vaillant ecoTEC combi boiler that is feeding 4 radiators downstairs and 5 upstairs (3 norm. size bedrooms + 1 bath + 1 toilet). The problem is that the downstairs radiators don't work properly; two of them get only lukewarm while the other two are just cold. All the upstairs ones work perfectly well. I have done the bleeding of all the radiators and apparently there is no air in the system. The pressure on the boiler's pressure gauge is also fine + there are absolutely no problems with the hot water upstairs in the bath and downstairs in the kitchen.
The boiler is fitted in the kitchen downstairs and I believe the problem is the way the plumber (whom I can't seem to find now) has connected the FLOW pipe; the FLOW pipe comes out of the combi and then there is a T-junction that distributes the heated FLOW water for upstairs and downstairs radiators. However, the piping from the T-junction to the first downstairs radiator is at least 5 times longer as compared to the first radiator upstairs. I have tried turning off all upstairs radiators; this makes the 2 downstairs rads work fine (almost) but the rest of the 2 get just barely warm. However, the moment I slowly turn on the upstairs ones, the downstairs rads gradually get back to the previous behavior.
Any advice from you guys will be greatly appreciated.
Many thanks.
Imran
I replaced my central heating with a Vaillant ecoTEC combi boiler that is feeding 4 radiators downstairs and 5 upstairs (3 norm. size bedrooms + 1 bath + 1 toilet). The problem is that the downstairs radiators don't work properly; two of them get only lukewarm while the other two are just cold. All the upstairs ones work perfectly well. I have done the bleeding of all the radiators and apparently there is no air in the system. The pressure on the boiler's pressure gauge is also fine + there are absolutely no problems with the hot water upstairs in the bath and downstairs in the kitchen.
The boiler is fitted in the kitchen downstairs and I believe the problem is the way the plumber (whom I can't seem to find now) has connected the FLOW pipe; the FLOW pipe comes out of the combi and then there is a T-junction that distributes the heated FLOW water for upstairs and downstairs radiators. However, the piping from the T-junction to the first downstairs radiator is at least 5 times longer as compared to the first radiator upstairs. I have tried turning off all upstairs radiators; this makes the 2 downstairs rads work fine (almost) but the rest of the 2 get just barely warm. However, the moment I slowly turn on the upstairs ones, the downstairs rads gradually get back to the previous behavior.
Any advice from you guys will be greatly appreciated.
Many thanks.
Imran